ROHM BU32TD2WNVX

CMOS LDO Regulators for Portable Equipments
1ch 200mA
CMOS LDO Regulators
BU□□TD2WNVX series
No.11020ECT07
●Description
BUTD2WNVX series is high-performance FULL CMOS regulator with 200-mA output, which is mounted on micro
miniature package SSON004X1010 (1.0 mm  1.0 mm  0.6 mm). It has excellent noise characteristics and load
responsiveness characteristics despite its low circuit current consumption of 35µA. It is most appropriate for various
applications such as power supplies for logic IC, RF, and camera modules. Micro miniature SSON004X1010 with built-in
heatsink is adopted for the package, which contributes to the space-saving design of the set.
●Features
1) High-accuracy output voltage of 1% (25 mV on Vout<2.5V products)
2) High ripple rejection: 70 dB (Typ., 1 kHz,)
3) Compatible with small ceramic capacitor (CIN=Co=0.47 µF)
4) Low current consumption: 35 µA
5) ON/OFF control of output voltage
6) With built-in overcurrent protection circuit and thermal shutdown circuit
7) With built-in output discharge circuit
8) Adopting ultra-small package SSON004X1010
●Applications
Battery-powered portable equipment, etc.
●Line up
■200 mA BU□□TD2WNVX Series
Product Name
BU□□TD2WNVX
1.0
1.2
1.5
1.8
1.85
1.9
2.0
2.05
2.1
2.3
2.5
○
○
○
○
○
○
○
○
○
○
○
2.6
2.7
2.8
2.85
2.9
3.0
3.1
3.2
3.3
3.4
○
○
○
○
○
○
○
○
○
○
Package
SSON004X1010
Model name：BU□□TD2WNVX
a
Contents
Symbol
a
Specification of output voltage
□□
Output voltage
(V)
10
□□
Output voltage
(V)
□□
Output voltage
(V)
□□
Output voltage
(V)
1.0 V(Typ.)
20
2.0 V(Typ.)
27
2.7 V(Typ.)
32
3.2 V(Typ.)
12
1.2 V(Typ.)
2A
2.05 V(Typ.)
28
2.8 V(Typ.)
33
3.3 V(Typ.)
15
1.5 V(Typ.)
21
2.1 V(Typ.)
2J
2.85 V(Typ.)
34
3.4 V(Typ.)
18
1.8 V(Typ.)
23
2.3V(Typ.)
29
2.9 V(Typ.)
1J
1.85 V(Typ.)
25
2.5 V(Typ.)
30
3.0 V(Typ.)
19
1.9 V(Typ.)
26
2.6 V(Typ.)
31
3.1 V(Typ.)
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Absolute maximum ratings
Parameter
Symbol
Ratings
Unit
VMAX
-0.3 ~ +6.5
V
Pd
560(*1)
mW
Maximum junction temperature
TjMAX
+125
℃
Operational temperature range
Topr
-40 ~ +85
℃
Storage temperature range
Tstg
-55 ~ +125
℃
Maximum applied power voltage
Power dissipation
(*1)
When PCB (70 mm  70 mm, thickness 1.6-mm glass epoxy) a standard ROHM board is implemented.
Reduced to 5.6 mW/℃ when used at Ta=25℃ or higher.
●Recommended operating range (Do not exceed Pd.)
Parameter
Input power supply voltage
Maximum output current
Symbol
Ratings
Unit
VIN
1.7 ~ 5.5
V
IMAX
200
mA
●Recommended operating conditions
Parameter
Symbol
Ratings
Min.
Typ.
Max.
Unit
Conditions
Input capacitor
CIN
0.22(*2)
0.47
－
µF
A ceramic capacitor is recommended.
Output capacitor
CO
0.22(*2)
0.47
－
µF
A ceramic capacitor is recommended.
(*2)
Set the capacity value of the capacitor so that it does not fall below the minimum value, taking temperature characteristics,
DC device characteristics, and change with time into consideration.
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
2/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Electrical characteristics(Ta=25℃, VIN=VOUT+1.0V(*3), STBY=VIN, CIN=0.47μF, CO=0.47μF, unless otherwise noted.)
Parameter
Symbol
Limits
Min.
Unit
Conditions
Typ.
Max.
VOUT
×0.99
VOUT
-25mV
VOUT
VOUT
×1.01
VOUT
+25mV
V
IIN
-
35
60
µA
IOUT=0mA
ISTBY
-
-
1.0
µA
STBY=0V
RR
45
70
-
dB
VRR=-20dBv,fRR=1kHz,IOUT=10mA
-
280
540
mV
2.5V≦VOUT≦2.6V
(VIN=0.98*VOUT,IOUT=200mA)
-
260
500
mV
2.7V≦VOUT≦2.85V
(VIN=0.98*VOUT,IOUT=200mA)
-
240
460
mV
2.9V≦VOUT≦3.1V
(VIN=0.98*VOUT,IOUT=200mA)
-
220
420
mV
3.2V≦VOUT≦3.4V
(VIN=0.98*VOUT,IOUT=200mA)
Overall Device
Output Voltage
VOUT
Operating Current
Operating Current (STBY)
Ripple Rejection Ratio
Dropout Voltage
IOUT=10µA,VOUT≧2.5V
IOUT=10µA,VOUT＜2.5V
VSAT
(*4)
Line Regulation
VDL
-
2
20
mV
VIN=VOUT+1.0V to 5.5V
IOUT=10µA
Load Regulation
VDLO
-
10
80
mV
IOUT=0.01mA to 100mA
Limit Current
ILMAX
220
400
700
mA
Vo=VOUT*0.95
Short Current
ISHORT
20
70
150
mA
Vo=0V
RDSC
20
50
80
Ω
VIN=4.0V, STBY=0V, VOUT=4.0V
ISTB
0.1
0.6
2.0
µA
STBY=1.5V
ON
VSTBH
1.2
-
5.5
V
OFF
VSTBL
-0.3
-
0.3
V
Over-current Protection (OCP)
Standby Block
Discharge Resistor
STBY Pin Pull-down Current
STBY Control Voltage
* This product does not have radiation-proof design.
(*3) VIN=2.5V for VOUT≦1.5V
(*4) VIN=2.5V to 5.5V for VOUT≦1.5V
●Electrical characteristics of each Output Voltage
(Ta=25℃, STBY=VIN, CIN=0.47μF, Co=0.47μF, unless otherwise noted.)
Parameter
Symbol
Limits
Unit
Conditions
Min.
Typ.
Max.
80
160
-
VIN=1.7V
200
-
-
VIN=2.1V
60
120
-
1.2V
1.5V
Maximum
output current
VIN=1.8V
mA
200
-
-
VIN=2.2V
1.8V
200
-
-
VIN=2.4V
1.9V
200
-
-
VIN=2.5V
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
3/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Block diagram, recommended circuit diagram, and pin configuration diagram
BU□□TD2WNVX
VIN
VIN
4
VREF
Cin
VOUT VOUT
PIN No.
Symbol
1
VOUT
Voltage output
2
GND
Grounding
3
STBY
ON/OFF control of output voltage
(High: ON, Low: OFF)
4
VIN
1
GND
2
OCP
Co
TSD
VSTBY
STBY
3
STBY
Function
Discharge
Recommended ceramic capacitor for Cin & Co
Murata Manufacturing Co., Ltd.
GRM188B11A474KA61D
Power input
Fig.1 Recommended circuit diagram
●Input / Output terminal equivalent circuit schematic
1pin (VOUT)
2pin (GND)
Fig.2
3pin (STBY)
4pin (VIN)
Input/Output equivalent circuit
●About input/output capacitor
Capacity value of ceramic capacitor - DC bias characteristics
(Example)
10-V withstand voltage
B1characteristics
GRM188B11A105KA61D
10
0
-10
Capacitance Change [%]
It is recommended to place a capacitor as close as possible to
the pins between the input terminal and GND or between the
output terminal and GND.
The capacitor between the input terminal and GND becomes
valid when source impedance increases or when wiring is long.
The larger the capacity of the output capacitor between the
output terminal and GND is, the better the stability and
characteristics in output load fluctuation become.
However, please check the status of actual implementation.
Ceramic capacitors generally have variation, temperature
characteristics, and direct current bias characteristics and the
capacity value also decreases with time depending on the
usage conditions. It is recommended to select a ceramic
capacitor upon inquiring about detailed data of the related
manufacturer.
10-V withstand voltage
B characteristics
-20
6.3-V withstand voltage
B characteristics
-30
10-V withstand voltage
F characteristics
-40
-50
-60
4-V withstand voltage
X6S characteristics
10-V withstand voltage
F characteristics
-70
-80
-90
-100
0
0.5
1
1.5
2
2.5
3
3.5
4
DC Bias Voltage [V]
Fig.3 Capacity – bias characteristics
●About the equivalent series resistance (ESR) of a ceramic capacitor
Cout=0.47μF ,CIN=0.47μF ,Temp=+25℃
100
Unstable region
10
ESR [Ω]
ESR　[Ω]
Capacitors generally have ESR (equivalent series resistance)
and it operates stably in the ESR-IOUT area shown on the right.
Since ceramic capacitors, tantalum capacitors, electrolytic
capacitors, etc. generally have different ESR, please check the
ESR of the capacitor to be used and use it within the stability
area range shown in the right graph for evaluation of the actual
application.
1
Stable region
0.1
0.01
0
50
100
150
200
IOUT [mA]
Fig.4 Stability area characteristics (Example)
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
4/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU12TD2WNVX (Ta=25℃ unless otherwise specified.)
1.4
Temp=25°C
1.24
1.0
0.8
Io=0uA
Io=100uA
Io=50mA
Io=200mA
0.6
0.4
0.2
VIN=STBY
VIN=STBY
1.22
1.21
1.20
1.19
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.18
1.17
1.16
0.0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
1.1
1.2
1.3
1.4
Input Voltage (V)
1.5
20
VIN=STBY
1.6
1.7
1.8
1.9
0
2
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Fig.7. Circuit Current IGND
1.25
100
Temp=85°C
1.0
0.8
0.6
0.4
Temp=25°C
Temp=-40°C
1.23
Temp=85°C
Output Voltage (V)
Gnd Current (uA)
1.2
80
60
40
Temp=-40°C
Temp=25°C
20
VIN=2.5V
STBY=1.5V
1.24
VIN=2.5V
STBY=1.5V
1.4
STBY Pin Current (uA)
40
Fig.6. Line Regulation
1.6
0.2
Temp=25°C
1.22
Temp=85°C
1.21
1.20
1.19
1.18
1.17
Temp=-40°C
1.16
0.0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
1.15
0
0.05
Input Voltage (V)
0.1
0.15
0.2
Fig.8. VSTBY - ISTBY
Output Voltage (V)
VIN=2.5V
VIN=5.5V
0.6
0.4
1.24
1.23
1.0
Temp=25°C
0.5
Temp=-40°C
Temp=85°C
0.2
0.0
0.0
0.3
0.4
0.5
0.2
VIN=2.5V
STBY=1.5V
Io=0.1mA
1.22
1.21
1.20
1.19
1.18
1.17
1.16
STBY=1.5V
0.2
0.15
1.25
VIN=2.5V
Io=0mA
1.0
0.1
Fig.10. Load Regulation
1.5
Temp=25°C
1.2
VIN=1.7V
0.05
Output Current (A)
Fig.9. IOUT - IGND
1.4
0.1
0
Output Current (A)
Output Voltage (V)
0
0
Temp=85°
Temp=25°C
Temp=-40°C
60
Input Voltage (V)
Fig.5. Output Voltage
0.8
80
0
1.15
0
Output Voltage (V)
Io=0uA
1.23
Gnd Current (uA)
Output Voltage (V)
Output Voltage (V)
100
1.25
Temp=25°C
1.2
0
0.6
0.5
1
1.5
STBY Voltage (V)
Output Current (A)
Fig.11. OCP Threshold
1.15
-40
-15
10
35
60
85
Temp (°C)
Fig.13. VOUT - Temp
Fig.12. STBY Threshold
60
1.0
VIN=2.5V
STBY=1.5V
Io=0mA
0.9
Gnd Current (uA)
Gnd Current (uA)
50
40
30
20
VIN=2.5V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
0.1
0
-40
0.0
-15
10
35
60
Temp (°C)
Fig.14. IGND vs Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
-40
-15
10
35
60
85
Temp (°C)
Fig.15. IGND - Temp (STBY)
5/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU12TD2WNVX (Ta=25 ℃unless otherwise specified.)
0
100
50
IOUT=50mA→0mA
1.30
Output Voltage (V)
Output Voltage (V)
1.25
1.20
1.15
1.10
1.25
1.20
1.15
Fig.17. Load Response
Fig.16. Load Response
0
100
50
IOUT=100mA→0mA
1.30
Output Voltage (V)
Output Voltage (V)
1.25
1.20
1.15
1.10
1.25
1.20
1.15
Fig.19. Load Response
Fig.18. Load Response
100
0
200
100
IOUT=200mA→0mA
0
Output Current (mA)
200
Output Current (mA)
IOUT=0mA→200mA
1.40
Output Voltage (V)
1.30
Output Voltage (V)
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
1.20
1.10
1.00
1.30
1.20
1.10
Fig.21. Load Response
Fig.20. Load Response
0
100
IOUT=100mA→50mA
50
0
1.25
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
1.25
Output Voltage (V)
Output Voltage (V)
0
Output Current (mA)
50
IOUT=0mA→50mA
Output Current (mA)
100
1.20
1.15
1.10
Fig.22. Load Response
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1.20
1.15
1.10
Fig.23. Load Response
6/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU12TD2WNVX (Ta=25℃ unless otherwise specified.)
1.0
0.0
2.0
1.0
0.0
Fig.24. Start Up Time
Iout=0mA
Fig.25. Start Up Time
Iout=200mA
0.0
2.0
1.0
0.0
2.0
1.0
0.0
Fig.26. Start Up Time
(VIN=STBY) Iout=0mA
Fig.27. Start Up Time
(VIN=STBY) Iout=200mA
3.5
2.5
2.0
1.21
Output Voltage (V)
Output Voltage (V)
0.0
4.5
VIN=2.5V→3.5V→2.5V
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=1.5→0V
2.0
VIN=STBY=0→2.5V
Output Voltage (V)
Output Voltage (V)
0.0
4.0
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→2.5V
1.0
0.0
2.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=0→1.5V
1.0
0.0
Fig.28. Discharge Time
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1.20
1.19
1.18
Fig.29. VIN Response
7/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU15TD2WNVX (Ta=25℃ unless otherwise specified.)
Output Voltage (V)
1.2
1.0
Io=0uA
Io=100uA
Io=50mA
Io=200mA
0.8
0.6
0.4
1.52
1.51
1.50
1.49
1.47
0.0
1.45
2
2.5
3
3.5
4
4.5
5
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.48
1.46
1.5
5.5
1.4
1.5
1.6
1.8
1.9
2
20
0
2.1
0.5
Temp=85°C
0.8
0.6
Temp=-40°C
80
1.5
2
2.5
3
3.5
4
4.5
5
60
40
Temp=-40°C
Temp=25°C
20
5.5
2.5
3
3.5
4
4.5
5
5.5
VIN=2.5V
STBY=1.5V
1.54
Temp=85°C
1.53
1.52
Temp=25°C
1.51
Temp=85°C
1.50
1.49
1.48
1.47
Temp=-40°C
1.46
1
2
1.55
VIN=2.5V
STBY=1.5V
1.45
0
0.5
1.5
Fig.32. Circuit Current IGND
0.2
0
1
Input Voltage (V)
Output Voltage (V)
Gnd Current (uA)
STBY Pin Current (uA)
1.2
0.0
0
0.05
Input Voltage (V)
0.1
0.15
0
0.2
0.05
0.1
0.15
0.2
Output Current (A)
Output Current (A)
Fig.33. VSTBY - ISTBY
Fig.35. Load Regulation
Fig.34. IOUT - IGND
1.55
2.0
2.0
Temp=25°C
1.8
1.6
1.4
VIN=2.0V
1.2
VIN=5.5V
1.0
0.8
0.6
0.4
0.2
1.5
1.0
Temp=25°C
Temp=-40°C
Temp=85°C
0.5
0.0
0.0
0.1
0.2
0.3
0.4
0.5
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
STBY=1.5V
0
VIN=2.5V
STBY=1.5V
Io=0.1mA
1.54
VIN=3.8V
Io=0mA
VIN=2.5V
Output Voltage (V)
Output Voltage (V)
1.7
100
1.4
Temp=25°C
Temp=25°C
40
Temp=-40°C
Fig.31. Line Regulation
1.6
0.4
Temp=85°C
60
Input Voltage (V)
Fig.30. Output Voltage
1.0
VIN=STBY
80
0
Input Voltage (V)
0.6
1.45
0
0.5
Output Current (A)
1
1.5
-40
-15
10
35
60
85
Temp (°C)
STBY Voltage (V)
Fig.37. STBY Threshold
Fig.36. OCP Threshold
Fig.38. VOUT - Temp
1.0
60
VIN=2.5V
STBY=1.5V
Io=0mA
0.9
Gnd Current (uA)
50
Gnd Current (uA)
IO=0uA
1.53
0.2
1
VIN=STBY
Output Voltage (V)
Output Voltage (V)
1.4
0.5
Temp=25°C
1.54
1.6
0
100
1.55
Temp=25°C
1.8
Gnd Current (uA)
2.0
40
30
20
10
VIN=2.5V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
-40
-15
10
35
60
Temp (°C)
Fig.39. IGND vs Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
-40
-15
10
35
60
85
Temp (°C)
Fig.40. IGND vs Temp (STBY)
8/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU15TD2WNVX (Ta=25℃ unless otherwise specified.)
5050
IOUT=50mA→0mA
1.45
1.40
1.55
1.25
1.50
1.20
1.45
1.15
Fig.42. Load Response
Fig.41. Load Response
0
100
50
IOUT=100mA→0mA
0
1.60
Output Voltage (V)
Output Voltage (V)
1.55
1.50
1.45
1.40
1.55
1.50
1.45
Fig.43. Load Response
Fig.44. Load Response
0
200
100
IOUT=200mA→0mA
1.60
0
Output Current (mA)
100
Output Current (mA)
200
IOUT=0mA→200mA
1.70
Output Voltage (V)
Output Voltage (V)
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
1.50
1.40
1.30
1.60
1.50
1.40
Fig.45. Load Response
Fig.46. Load Response
50
0
100
IOUT=100mA→50mA
50
0
1.55
Output Current (mA)
100
Output Current (mA)
IOUT=50mA→100mA
1.60
Output Voltage (V)
Output Voltage (V)
00
1.60
1.30
1.50
Output Voltage
Voltage (V)
(V)
Output
Output Voltage (V)
0
100
100
Output Current (mA)
Output Current (mA)
50
IOUT=0mA→50mA
1.55
Output Current (mA)
100
1.50
1.45
1.40
www.rohm.com
1.50
1.45
Fig.48. Load Response
Fig.47. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
1.55
9/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU15TD2WNVX (Ta=25℃ unless otherwise specified.)
2.0
1.0
0.0
2.0
1.0
0.0
Fig.50. Start Up Time
Iout=200mA
Fig.49. Start Up Time
Iout=0mA
2.0
VIN=STBY=0→2.5V
0.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
2.0
1.0
0.0
2.0
1.0
0.0
Fig.51. Start Up Time
(VIN=STBY) Iout=0mA
Fig.52. Start Up Time
(VIN=STBY) Iout=200mA
3.5
2.5
1.51
2.0
Output Voltage (V)
Output Voltage (V)
0.0
4.5
VIN=2.5V→3.5V→2.5V
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=1.5→0V
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→2.5V
1.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=0→1.5V
1.0
0.0
Fig.53. Discharge Time
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1.50
1.49
1.48
Fig.54. VIN Response
10/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU18TD2WNVX (Ta=25℃ unless otherwise specified.)
1.85
Temp=25°C
100
Temp=25°C
1.84
1.6
Output Voltage (V)
1.4
1.2
1.0
Io=0uA
Io=100uA
Io=50mA
Io=200mA
0.8
0.6
0.4
VIN=STBY
0.2
VIN=STBY
1.82
1.81
1.80
1.79
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.78
1.77
1.76
0.0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
20
0
2.5
0.5
1
1.5
Gnd Current (uA)
Temp=85°C
0.8
0.6
3
3.5
4
4.5
5
5.5
1.85
VIN=2.8V
STBY=1.5V
80
VIN=2.8V
STBY=1.5V
1.84
Temp=85°C
60
40
Temp=-40°C
Temp=25°C
20
Temp=-40°C
2.5
Fig.57. Circuit Current IGND
100
1.4
1.2
2
Input Voltage (V)
Fig.56. Line Regulation
1.6
Temp=25°C
Temp=25°C
40
Input Voltage (V)
Fig.55. Output Voltage
0.4
Temp=85°C
60
0
Input Voltage (V)
1.0
VIN=STBY
80
Temp=-40°C
1.75
0
STBY Pin Current (uA)
Io=0uA
1.83
Output Voltage (V)
Output Voltage (V)
1.8
Gnd Current (uA)
2.0
0.2
1.83
Temp=25°C
1.82
Temp=85°C
1.81
1.80
1.79
1.78
1.77
Temp=-40°C
1.76
1.75
0
0.0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
5.5
0.05
0.1
0.15
0
0.2
0.05
Fig.58. VSTBY - ISTBY
0.1
0.15
0.2
Output Current (A)
Output Current (A)
Input Voltage (V)
Fig.60. Load Regulation
Fig.59. IOUT - IGND
1.85
2.0
2.0
VIN=5.5V
1.4
VIN=2.3V
1.2
1.0
0.8
0.6
0.4
Temp=25°C
0.2
STBY=1.5V
1.5
1.0
Temp=25°C
Temp=-40°C
Temp=85°C
0.5
0.0
0.1
0.2
0.3
0.4
0.5
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
0.0
0.0
1.75
0
0.6
0.5
1
1.5
60
-15
10
35
60
85
Fig.63. VOUT - Temp
Fig.62. STBY Threshold
Fig.61. OCP Threshold
-40
Temp (°C)
STBY Voltage (V)
Output Current (mA)
1.0
VIN=2.8V
STBY=1.5V
Io=0mA
0.9
Gnd Current (uA)
50
Gnd Current (uA)
Output Voltage (V)
1.6
Output Voltage (V)
Output Voltage (V)
VIN=2.8V
VIN=2.8V
STBY=1.5V
Io=0.1mA
1.84
VIN=3.8V
Io=0mA
1.8
40
30
20
VIN=2.8V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
0.1
0
0.0
-40
-15
10
35
60
Temp (°C)
Fig.64. IGND - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
-40
-15
10
35
60
85
Temp (°C)
Fig.65. IGND - Temp (STBY)
11/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU18TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
50
IOUT=50mA→0mA
Output Voltage (V)
Output Voltage (V)
1.80
1.75
1.70
1.85
1.80
Fig.67. Load Response
50
0
100
50
IOUT=100mA→0mA
1.85
0
1.90
Output Voltage (V)
Output Voltage (V)
Output Current (mA)
100
Output Current (mA)
IOUT=0mA→100mA
VIN=2.8V
STBY=1.5V
COUT=0.47uF
1.75
Fig.66. Load Response
1.80
1.75
1.70
1.85
1.80
VIN=2.8V
STBY=1.5V
COUT=0.47uF
1.75
Fig.69. Load Response
Fig.68. Load Response
0
200
100
IOUT=200mA→0mA
0
Output Current (mA)
100
Output Current (mA)
200
IOUT=0mA→200mA
2.00
Output Voltage (V)
1.90
Output Voltage (V)
0
1.90
1.85
1.80
1.70
1.60
1.90
1.80
VIN=2.8V
STBY=1.5V
COUT=0.47uF
1.70
Fig.71. Load Response
Fig.70. Load Response
0
100
IOUT=100mA→50mA
50
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
1.85
Output Voltage (V)
1.90
Output Voltage (V)
Output Current (mA)
50
IOUT=0mA→50mA
Output Current (mA)
100
1.80
1.70
1.60
Fig.72. Load Response
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1.80
1.75
1.70
VIN=2.8V
STBY=1.5V
COUT=0.47uF
Fig.73. Load Response
12/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU18TD2WNVX (Ta=25℃ unless otherwise specified.)
2.0
1.0
0.0
2.0
1.0
0.0
Fig.74. Start Up Time
Iout=0mA
Fig.75. Start Up Time
Iout=200mA
VIN=STBY=2.8→0V
Output Voltage (V)
2.0
1.0
0.0
2.0
1.0
0.0
Fig.77. Start Up Time
(VIN=STBY) Iout=200mA
Fig.76. Start Up Time
(VIN=STBY) Iout=0mA
Iout=0mA
3.8
2.8
1.81
2.0
Output Voltage (V)
Output Voltage (V)
0.0
4.8
VIN=2.8V→3.8V→2.8V
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=1.5→0V
2.0
0.0
Output Voltage (V)
0.0
4.0
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→2.8V
1.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=0→1.5V
1.0
0.0
www.rohm.com
1.79
1.78
Fig.79. VIN Response
Fig.78. Discharge Time
© 2011 ROHM Co., Ltd. All rights reserved.
1.80
13/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU19TD2WNVX (Ta=25℃ unless otherwise specified.)
1.95
2.0
Temp=25°C
100
Temp=25°C
1.94
1.2
1.0
0.8
0.6
0.4
0.2
1.92
1.91
1.90
1.89
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.88
1.87
1.86
0.0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
1.9
2
2.2
2.3
2.4
0
2.5
Temp=85°C
0.8
0.6
Temp=25°C
1.5
80
2.5
3
3.5
4
4.5
5
2.5
3
3.5
4
4.5
5
5.5
VIN=2.9V
STBY=1.5V
1.93
40
Temp=-40°C
Temp=25°C
1.92
Temp=25°C
1.91
1.90
1.89
1.88
Temp=-40°C
1.87
Temp=85°C
1.86
0
5.5
2
1.94
Temp=85°C
60
20
Temp=-40°C
2
1.5
1.95
VIN=3.9V
STBY=1.5V
0
1
1
Fig.82. Circuit Current IGND
0.2
0.5
0.5
Input Voltage (V)
Output Voltage (V)
Gnd Current (uA)
1.2
0
0.05
0.1
0.15
1.85
0.2
0
Output Current (A)
Input Voltage (V)
0.05
0.1
0.15
0.2
Output Current (A)
Fig.84. IOUT - IGND
Fig.83. VSTBY - ISTBY
Fig.85. Load Regulation
1.95
2.0
2.0
VIN=2.4V
1.4
1.2
1.0
0.8
0.6
0.4
Temp=25°C
0.2
STBY=1.5V
1.5
1.0
Temp=25°C
0
0.1
0.2
0.3
0.4
0.5
0.5
0.6
Output Current (A)
Fig.86. OCP Threshold
1.5
1.91
1.90
1.89
1.88
1.87
1.85
-40
-15
10
35
60
85
Temp (°C)
Fig.87. STBY Threshold
Fig.88. VOUT - Temp
1.0
VIN=2.9V
STBY=1.5V
Io=0µA
0.9
Gnd Current (uA)
50
1
STBY Voltage (V)
60
1.92
1.86
0.0
0.0
0
Temp=-40°C
Temp=85°C
0.5
VIN=2.9V
STBY=1.5V
Io=100µA
1.93
Output Voltage (V)
1.6
Output Voltage (V)
VIN=2.9V
VIN=5.5V
1.94
VIN=3.9V
Io=0mA
1.8
Output Voltage (V)
2.1
100
1.4
0.0
Gnd Current (uA)
Temp=-40°C
0
Fig.81. Line Regulation
1.6
0.4
Temp=25°C
40
Input Voltage (V)
Fig.80. Output Voltage
1.0
Temp=85°C
60
20
VIN=STBY
1.85
1.8
5.5
Input Voltage (V)
VIN=STBY
80
Gnd Current (uA)
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.4
STBY Pin Current (uA)
IO=0uA
1.93
1.6
Output Voltage (V)
Output Voltage (V)
1.8
40
30
20
VIN=2.9V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
0.1
0.0
0
-40
-40
-15
10
35
60
Temp (°C)
Fig.89. IGND - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
-15
10
35
60
85
Temp (°C)
Fig.90. IGND - Temp (STBY)
14/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU19TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
50
IOUT=50mA→0mA
2.00
Output Voltage (V)
Output Voltage (V)
1.95
1.90
1.85
1.80
1.95
1.90
1.85
Fig.91. Load Response
Fig.92. Load Response
0
100
50
IOUT=100mA→0mA
2.00
Output Voltage (V)
Output Voltage (V)
1.95
1.90
1.85
1.80
1.95
1.90
1.85
Fig.93. Load Response
Fig.94. Load Response
100
0
200
100
IOUT=200mA→0mA
0
Output Current (mA)
200
Output Current (mA)
IOUT=0mA→200mA
2.10
Output Voltage (V)
2.00
Output Voltage (V)
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
1.90
1.80
1.70
2.00
1.90
1.80
Fig.96. Load Response
Fig.95. Load Response
0
100
IOUT=100mA→50mA
50
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
2.00
Output Voltage (V)
1.95
Output Voltage (V)
0
Output Current (mA)
50
IOUT=0mA→50mA
Output Current (mA)
100
1.90
1.85
1.80
www.rohm.com
1.85
Fig.98. Load Response
Fig.97. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
1.95
1.90
15/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU19TD2WNVX (Ta=25℃ unless otherwise specified.)
1.0
2.0
1.0
0.0
2.0
1.0
0.0
Fig.100. Start Up Time
Iout=200mA
Fig.99. Start Up Time
Iout=0mA
VIN=STBY=0→2.9V
1.0
0.0
2.0
1.0
0.0
Fig.102. Start Up Time
(VIN=STBY) Iout=200mA
Fig.101. Start Up Time
(VIN=STBY) Iout=0mA
3.9
2.9
1.91
2.0
Output Voltage (V)
Output Voltage (V)
0.0
4.9
VIN=2.9V→3.9V→2.9V
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=1.5→0V
2.0
0.0
2.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→2.9V
1.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
STBY=0→1.5V
STBY Voltage (V)
2.0
1.0
0.0
www.rohm.com
1.89
1.88
Fig.104. VIN Response
Fig.103. Discharge Time
© 2011 ROHM Co., Ltd. All rights reserved.
1.90
16/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU25TD2WNVX (Ta=25℃ unless otherwise specified.)
3.5
Temp=25°C
2.54
2.5
2.0
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.5
1.0
0.5
IO=0uA
Io=0uA
Io=100uA
Io=50mA
Io=200mA
2.53
2.52
2.51
2.50
2.49
2.48
2.47
0.0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
2.4
2.5
2.6
Input Voltage (V)
2.8
2.9
3
0
3.1
0.5
1
1.5
Temp=85°C
0.8
0.6
Temp=-40°C
2.5
3
3.5
4
4.5
5
5.5
Fig.107. Circuit Current IGND
2.55
VIN=3.5V
STBY=1.5V
80
VIN=3.5V
STBY=1.5V
2.54
Temp=85°C
60
40
Temp=-40°C
Temp=25°C
20
0.2
2
Input Voltage (V)
Output Voltage (V)
Gnd Current (uA)
2.53
2.52
Temp=25°C
2.51
2.50
2.49
2.48
Temp=-40°C
2.47
Temp=85°C
2.46
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
2.45
0
0.05
Input Voltage (V)
0.1
0.15
Fig.108. VSTBY - ISTBY
3.0
0.30
2.5
Output Voltage (V)
Temp=85°C
0.25
Temp=25°C
Temp=-40°C
0.10
0.1
0.15
2.5
2.0
VIN=3.0V
1.5
1.0
2.0
1.5
Temp=25°C
1.0
Temp=-40°C
Temp=85°C
0.5
0.0
0
0.2
0.1
0.2
0.3
0.4
0.5
0.6
0
0.5
Output Current (A)
2.55
1.0
VIN=3.5V
STBY=1.5V
Io=0mA
Gnd Current (uA)
50
2.52
2.51
2.50
2.49
2.48
2.47
1.5
Fig.113. STBY Threshold
60
VIN=3.5V
STBY=1.5V
Io=0.1mA
1
STBY Voltage (V)
Fig.112. OCP Threshold
Fig.111. Dropout Voltage
2.53
VIN=3.5V
Io=0mA
VIN=3.5V
VIN=5.5V
Output Current (A)
2.54
0.2
Fig.110. Load Regulation
0.0
0.05
0.15
STBY=1.5V
0.00
0
0.1
Output Current (A)
0.5
VIN = 0.98 x VOUT
STBY=1.5V
0.05
0.05
3.0
Temp=25°C
0.15
0
Fig.109. IOUT - IGND
0.35
0.20
0.2
Output Current (A)
Output Voltage (V)
0
0
0.9
Gnd Current (uA)
STBY Pin Current (uA)
1.2
0.0
Dropout Voltage (V)
2.7
100
1.4
Temp=25°C
20
Temp=-40°C
Fig.106. Line Regulation
1.6
0.4
Temp=25°C
40
Input Voltage (V)
Fig.105. Output Voltage
1.0
Temp=85°C
60
0
2.45
0
VIN=STBY
80
VIN=STBY
2.46
VIN=STBY
Output Voltage (V)
Gnd Current (uA)
Output Voltage (V)
Output Voltage (V)
100
2.55
Temp=25°C
3.0
40
30
20
VIN=3.5V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
2.46
0.1
2.45
0
-40
-15
10
35
60
Temp (°C)
Fig.114. VOUT - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
0.0
-40
-15
10
35
Temp (°C)
Fig.115. IGND - Temp
17/41
60
85
-40
-15
10
35
60
85
Temp (°C)
Fig.116. IGND - Temp (STBY)
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU25TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
50
IOUT=50mA→0mA
2.70
Output Voltage (V)
Output Voltage (V)
2.55
2.50
2.45
2.40
2.65
2.50
2.45
Fig.118. Load Response
Fig.117. Load Response
0
200
100
IOUT=100mA→0mA
2.50
2.45
2.40
2.55
2.50
2.45
Fig.119. Load Response
Fig.120. Load Response
0
200
100
IOUT=200mA→0mA
2.60
0
Output Current (mA)
100
Output Current (mA)
200
IOUT=0mA→200mA
2.70
Output Voltage (V)
Output Voltage (V)
0
2.60
Output Voltage (V)
Output Voltage (V)
2.55
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
2.50
2.40
2.30
2.60
2.50
2.40
Fig.121. Load Response
Fig.122. Load Response
0
100
IOUT=100mA→50mA
50
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
2.0
Output Voltage (V)
2.55
Output Voltage (V)
0
Output Current (mA)
50
IOUT=0mA→50mA
Output Current (mA)
100
2.50
2.45
2.40
www.rohm.com
2.50
2.45
Fig.124. Load Response
Fig.123. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
2.55
18/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU25TD2WNVX (Ta=25℃ unless otherwise specified.)
4.0
2.0
0.0
4.0
2.0
0.0
Fig.125. Start Up Time
Iout=0mA
Fig.126. Start Up Time
Iout=200mA
2.0
0.0
4.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
VIN=STBY=0→3.5V
2.0
0.0
4.0
2.0
0.0
Fig.128. Start Up Time
(VIN=STBY) Iout=200mA
Fig.127. Start Up Time
(VIN=STBY) Iout=0mA
0
5.5
VIN=3.5V→4.5V→3.5V
4.5
3.5
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
2.51
4.0
Output Voltage (V)
Output Voltage (V)
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→3.5V
STBY=1.5→0V
1.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=0→1.5V
2.0
0.0
Fig.129. Discharge Time
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
2.50
2.49
2.48
Fig.130. VIN Response
19/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU26TD2WNVX (Ta=25℃ unless otherwise specified.)
2.65
Temp=25°C
Output Voltage (V)
2.5
2.0
1.5
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.0
0.5
2.63
2.62
2.61
2.60
2.59
Io=0uA
Io=100uA
Io=50mA
Io=200mA
2.58
2.57
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
2.6
2.7
2.8
2.9
3
3.1
3.2
0
Gnd Current (uA)
1.2
Temp=85°C
0.8
0.6
80
60
40
Temp=-40°C
Temp=25°C
20
Temp=-40°C
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0.05
3.0
0.30
2.5
0.1
0.15
Temp=25°C
0.20
0.15
Temp=-40°C
0.10
VIN = 0.98 x VOUT
STBY=1.5V
0.05
2.59
2.58
2.57
Temp=-40°C
0.15
VIN=5.5V
1.5
1.0
0.1
0.15
0.2
2.0
1.5
Temp=25°C
1.0
Temp=-40°C
Temp=85°C
0.5
STBY=1.5V
0.2
0.0
0
0.1
0.2
0.3
0.4
0.5
0.6
0
0.5
Output Current (A)
2.65
1.0
VIN=3.6V
STBY=1.5V
Io=0mA
Gnd Current (uA)
50
2.62
2.61
2.60
2.59
2.58
2.57
1.5
Fig.139. STBY Threshold
60
VIN=3.6V
STBY=1.5V
Io=0.1mA
1
STBY Voltage (V)
Fig.138. OCP Threshold
Fig.137. Dropout Voltage
2.63
0.05
VIN=3.6V
Io=0mA
2.5
VIN=3.6V
2.0
Output Current (A)
2.64
Temp=85°C
3.0
VIN=3.1V
0.9
Gnd Current (uA)
0.1
5.5
Fig.136. Load Regulation
0.0
0.05
5
Output Current (A)
0.5
0.00
0
4.5
Temp=25°C
0
Output Voltage (V)
Output Voltage (V)
Dropout Voltage (V)
Temp=85°C
4
2.60
0.2
Temp=25°C
0.25
3.5
2.61
Fig.135. IOUT - IGND
Fig.134. VSTBY - ISTBY
Output Voltage (V)
2.62
Output Current (A)
Input Voltage (V)
0.35
3
2.55
0
5.5
2.5
2.63
2.56
0
0.0
2
VIN=3.6V
STBY=1.5V
2.64
Temp=85°C
0.2
0
1.5
2.65
VIN=3.6V
STBY=1.5V
1.4
Temp=25°C
1
Fig.133. Circuit Current IGND
100
1.6
0.4
0.5
Input Voltage (V)
Fig.132. Line Regulation
Fig.131. Output Voltage
STBY Pin Current (uA)
Temp=-40°C
Input Voltage (V)
Input Voltage (V)
1.0
Temp=25°C
40
0
2.5
5.5
Temp=85°C
60
20
2.55
0.0
VIN=STBY
80
2.56
VIN=STBY
IO=0uA
VIN=STBY
Output Voltage (V)
Output Voltage (V)
100
Temp=25°C
2.64
Gnd Current (uA)
3.0
40
30
20
VIN=3.6V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
2.56
0.1
2.55
0
-40
-15
10
35
60
Temp (°C)
Fig.140. VOUT - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
0.0
-40
-15
10
35
60
Temp (°C)
Fig.141. IGND - Temp
20/41
85
-40
-15
10
35
60
85
Temp (°C)
Fig.142. IGND - Temp (STBY)
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU26TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
50
IOUT=50mA→0mA
0
2.70
Output Voltage (V)
Output Voltage (V)
2.65
2.60
2.55
2.50
2.65
2.60
2.55
Fig.143. Load Response
Fig.144. Load Response
0
100
IOUT=100mA→0mA
50
0
2.70
Output Voltage (V)
Output Voltage (V)
2.65
2.60
2.55
2.50
2.65
2.60
2.55
Fig.146. Load Response
Fig.145. Load Response
0
200
100
IOUT=200mA→0mA
2.80
Output Voltage (V)
2.70
0
Output Current (mA)
100
Output Current (mA)
200
IOUT=0mA→200mA
Output Voltage (V)
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
2.60
2.50
2.40
2.70
2.60
2.50
Fig.147. Load Response
Fig.148. Load Response
0
100
IOUT=100mA→50mA
50
0
2.62
Output Voltage (V)
2.65
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
Output Voltage (V)
Output Current (mA)
IOUT=0mA→50mA
50
Output Current (mA)
100
2.60
2.55
2.50
www.rohm.com
2.60
2.59
Fig.150. Load Response
Fig.149. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
2.61
21/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU26TD2WNVX (Ta=25℃ unless otherwise specified.)
1.0
Output Voltage (V)
4.0
2.0
0.0
4.0
2.0
0.0
Fig.151. Start Up Time
Iout=0mA
Fig.152. Start Up Time
Iout=200mA
2.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
VIN=STBY=0→3.6V
4.0
2.0
0.0
4.0
2.0
0.0
Fig.153. Start Up Time
(VIN=STBY) Iout=0mA
Fig.154. Start Up Time
(VIN=STBY) Iout=200mA
4.0
2.0
0.0
Fig.155. Discharge Time
www.rohm.com
4.6
3.6
Output Voltage (V)
Output Voltage (V)
0.0
5.6
VIN=3.6V→4.6V→3.6V
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
© 2011 ROHM Co., Ltd. All rights reserved.
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→3.6V
STBY=1.5→0V
1.0
0.0
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
STBY=0→1.5V
STBY Voltage (V)
2.0
2.65
2.60
2.55
Fig.156. VIN Response
22/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU27TD2WNVX (Ta=25℃ unless otherwise specified.)
Temp=25°C
2.74
Output Voltage (V)
2.5
2.0
1.5
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.0
0.5
0.0
2.72
2.71
2.70
2.69
Io=0uA
Io=100uA
Io=50mA
Io=200mA
2.68
2.67
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
2.7
2.8
Input Voltage (V)
3.1
3.2
3.3
Temp=85°C
0.8
0.6
Temp=25°C
Temp=-40°C
0
0.5
1
1.5
2.5
3
3.5
4
4.5
5
5.5
Fig.159. Circuit Current IGND
2.75
VIN=3.7V
STBY=1.5V
80
VIN=3.7V
STBY=1.5V
2.74
Temp=85°C
60
40
Temp=-40°C
Temp=25°C
20
Temp=-40°C
2
Input Voltage (V)
Output Voltage (V)
Gnd Current (uA)
0.2
2.73
2.72
Temp=25°C
2.71
2.70
2.69
2.68
2.67
Temp=85°C
Temp=-40°C
2.66
0
1
1.5
2
2.5
3
3.5
4
4.5
5
2.65
0
5.5
0.05
0.2
0
0.35
3.0
0.30
2.5
Output Voltage (V)
Temp=85°C
0.25
Temp=25°C
0.20
Temp=-40°C
0.10
0.15
VIN=3.6V
2.0
1.5
1.0
Temp=25°C
2.0
1.5
Temp=25°C
1.0
Temp=-40°C
Temp=85°C
0.5
0
0.2
0.1
0.2
0.3
0.4
0.5
0.0
0.6
0
0.5
Output Current (A)
Fig.163. Dropout Voltage
1.0
VIN=3.7V
STBY=1.5V
Io=0.1mA
Gnd Current (uA)
50
2.72
2.71
2.70
2.69
2.68
2.67
1.5
Fig.165. STBY Threshold
60
VIN=3.7V
STBY=1.5V
Io=0.1mA
1
STBY Voltage (V)
Fig.164. OCP Threshold
2.75
2.73
VIN=3.7V
Io=0mA
2.5
VIN=5.5V
Output Current (A)
2.74
0.2
3.0
0.0
0.1
0.15
STBY=1.5V
0.00
0.05
0.1
Fig.162. Load Regulation
VIN=3.1V
0.5
VIN = 0.98 x VOUT
STBY=1.5V
0
0.05
Output Current (A)
Fig.161. IOUT - IGND
Fig.160. VSTBY - ISTBY
0.05
0.15
Output Current (A)
Input Voltage (V)
0.15
0.1
Output Voltage (V)
0.5
0.9
Gnd Current (uA)
STBY Pin Current (uA)
1.2
0
Dropout Voltage (V)
3
100
1.4
0.0
Output Voltage (V)
2.9
Fig.158. Line Regulation
1.6
0.4
Temp=25°C
Input Voltage (V)
Fig.157. Output Voltage
1.0
Temp=85°C
40
0
2.6
5.5
60
20
2.65
0
VIN=STBY
80
2.73
2.66
VIN=STBY
IO=0uA
VIN=STBY
Gnd Current (uA)
Temp=25°C
Output Voltage (V)
100
2.75
3.0
40
30
20
VIN=3.7V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
2.66
0.1
2.65
0
-40
-15
10
35
60
Temp (°C)
Fig.166. VOUT - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
0.0
-40
-15
10
35
Temp (°C)
Fig.167. IGND - Temp
23/41
60
85
-40
-15
10
35
60
85
Temp (°C)
Fig.168. IGND - Temp (STBY)
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU27TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
50
IOUT=50mA→0mA
2.80
Output Voltage (V)
Output Voltage (V)
2.75
2.70
2.65
2.60
2.75
2.70
2.65
Fig.170. Load Response
Fig.169. Load Response
0
100
50
IOUT=100mA→0mA
2.80
Output Voltage (V)
Output Voltage (V)
2.75
2.70
2.65
2.60
2.75
2.70
2.65
Fig.172. Load Response
Fig.171. Load Response
0
200
100
IOUT=200mA→0mA
0
2.80
Output Current (mA)
100
Output Current (mA)
200
IOUT=0mA→200mA
2.90
Output Voltage (V)
Output Voltage (V)
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
2.70
2.60
2.50
2.80
2.70
2.60
Fig.173. Load Response
Fig.174. Load Response
0
100
IOUT=100mA→50mA
50
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
2.80
Output Voltage (V)
2.75
Output Voltage (V)
0
Output Current (mA)
50
IOUT=0mA→50mA
Output Current (mA)
100
2.70
2.65
2.60
www.rohm.com
2.70
2.65
Fig.176. Load Response
Fig.175. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
2.75
24/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU27TD2WNVX (Ta=25℃ unless otherwise specified.)
1.0
0.0
4.0
2.0
0.0
4.0
2.0
0.0
Fig.178. Start Up Time
Iout=200mA
Fig.177. Start Up Time
Iout=0mA
2.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
VIN=STBY=0→3.7V
4.0
2.0
0.0
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→3.7V
4.0
2.0
0.0
Fig.180. Start Up Time
(VIN=STBY) Iout=200mA
Fig.179. Start Up Time
(VIN=STBY) Iout=0mA
0.0
5.7
4.7
3.7
Input Voltage (V)
1.0
STBY=1.5→0V
STBY Voltage (V)
2.0
2.71
4.0
Output Voltage (V)
Output Voltage (V)
1.0
STBY=0→1.5V
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY Voltage (V)
STBY=0→1.5V
STBY Voltage (V)
2.0
2.0
0.0
Fig.181. Discharge Time
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
2.70
2.69
2.68
Fig.182. VIN Response
25/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU28TD2WNVX (Ta=25℃ unless otherwise specified.)
2.85
Temp=25°C
Output Voltage (V)
2.5
2.0
1.5
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.0
0.5
VIN=STBY
2.83
2.82
2.81
2.80
2.79
2.78
2.77
Temp=-40°C
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
0
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
0
Temp=85°C
0.8
0.6
Temp=-40°C
80
60
40
Temp=-40°C
Temp=25°C
20
2.82
1
1.5
2
2.5
3
3.5
4
4.5
5
0.05
Input Voltage (V)
Fig.186. VSTBY - ISTBY
3.0
2.5
2.78
2.77
0.1
0.15
0.20
Temp=25°C
0.15
Temp=-40°C
0.10
VIN = 0.98 x VOUT
STBY=1.5V
0.05
0.05
0.1
0.15
VIN=3.8V
2.0
1.5
1.0
Temp=25°C
0.5
0.1
0.3
0.4
0.5
1.5
Temp=25°C
1.0
0.0
0.6
0
0.5
Gnd Current (uA)
2.80
2.79
2.78
2.77
1.5
Fig.191. STBY Threshold
1.0
VIN=3.8V
STBY=1.5V
Io=0mA
50
2.81
1
STBY Voltage (V)
60
2.82
Temp=-40°C
Temp=85°C
0.5
Fig.190. OCP Threshold
VIN=3.8V
STBY=1.5V
Io=0.1mA
2.83
0.2
2.0
Output Current (A)
Fig.189. Dropout Voltage
2.84
0.2
VIN=3.8V
Io=0mA
2.5
VIN=5.5V
Output Current (A)
2.85
0.15
3.0
0
0.2
0.1
Fig.188. Load Regulation
0.0
0
0.05
Output Current (A)
STBY=1.5V
0.00
Temp=85°C
Temp=-40°C
0
0.2
Output Voltage (V)
Output Voltage (V)
0.25
5.5
2.79
VIN=3.3V
Temp=85°C
5
2.80
Fig.187. IOUT - IGND
0.30
4.5
Temp=25°C
Output Current (A)
0.35
4
2.75
0
5.5
3.5
2.81
2.76
0.5
3
2.83
0
0
2.5
VIN=3.8V
STBY=1.5V
2.84
Temp=85°C
0.2
0.0
2
2.85
VIN=3.8V
STBY=1.5V
Output Voltage (V)
Gnd Current (uA)
1.2
Temp=25°C
1.5
Fig.185. Circuit Current IGND
100
1.4
0.4
1
Input Voltage (V)
Fig.184. Line Regulation
1.6
1.0
0.5
Input Voltage (V)
Fig.183. Output Voltage
STBY Pin Current (uA)
Temp=25°C
40
20
Input Voltage (V)
Dropout Voltage (V)
Temp=85°C
60
2.75
0
VIN=STBY
Io=0uA
80
2.76
0.0
Output Voltage (V)
VIN=STBY
Io=0uA
Io=100uA
Io=50mA
Io=200mA
VIN=3.8V
STBY=0V
0.9
Gnd Current (uA)
Output Voltage (V)
100
Temp=25°C
2.84
Gnd Current (uA)
3.0
40
30
20
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
2.76
0.1
2.75
0
-40
-15
10
35
60
85
Temp (°C)
Fig.192. VOUT - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
0.0
-40
-15
10
35
Temp (°C)
Fig.193. IGND - Temp
26/41
60
85
-40
-15
10
35
60
85
Temp (°C)
Fig.194. IGND - Temp (STBY)
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU28TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
50
0
2.90
Output Voltage (V)
Output Voltage (V)
2.85
2.80
2.75
2.70
2.85
2.80
2.75
Fig.196. Load Response
Fig.195. Load Response
0
100
50
IOUT=100mA→0mA
2.90
Output Voltage (V)
Output Voltage (V)
2.85
2.80
2.75
2.70
2.85
2.80
2.75
Fig.198. Load Response
Fig.197. Load Response
0
200
100
IOUT=200mA→0mA
0
Output Current (mA)
100
Output Current (mA)
200
IOUT=0mA→200mA
3.00
Output Voltage (V)
2.90
Output Voltage (V)
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
2.80
2.70
2.60
2.90
2.80
2.70
Fig.200. Load Response
Fig.199. Load Response
0
100
IOUT=100mA→50mA
50
0
2.85
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
2.90
Output Voltage (V)
Output Voltage (V)
Output Current (mA)
50
IOUT=0mA→50mA
Output Current (mA)
100
2.80
2.75
2.70
www.rohm.com
2.80
2.75
Fig.202. Load Response
Fig.201. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
2.85
27/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU28TD2WNVX (Ta=25℃ unless otherwise specified.)
4.0
2.0
0.0
4.0
2.0
0.0
Fig.203. Start Up Time
Iout=0mA
Fig.204. Start Up Time
Iout=200mA
4.0
2.0
0.0
4.0
2.0
0.0
Fig.206. Start Up Time
(VIN=STBY) Iout=200mA
Fig.205. Start Up Time
(VIN=STBY) Iout=0mA
4.8
3.8
2.81
4.0
Output Voltage (V)
Output Voltage (V)
0.0
5.8
VIN=3.8→4.8V→3.8V
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=1.5→0V
2.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
VIN=STBY=0→3.8V
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→3.8V
1.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=0→1.5V
2.0
0.0
www.rohm.com
2.79
2.78
Fig.208. VIN Response
Fig.207. Discharge Time
© 2011 ROHM Co., Ltd. All rights reserved.
2.80
28/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU30TD2WNVX (Ta=25℃ unless otherwise specified.)
3.05
Temp=25°C
Output Voltage (V)
2.0
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.5
1.0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
3.01
3.00
2.99
Io=0uA
Io=100uA
Io=50mA
Io=200mA
2.98
2.97
2.95
2.9
0.0
5.5
3
3.1
3.3
3.4
3.5
3.6
0
0.5
1.2
Temp=85°C
0.8
0.6
Temp=-40°C
1.5
2
2.5
3
3.5
4
4.5
60
40
Temp=-40°C
Temp=25°C
20
5
5.5
0
0.05
0.1
0.15
Temp=-40°C
0.10
VIN = 0.98 x VOUT
STBY=1.5V
0.05
2.98
2.97
Temp=-40°C
0.05
0.1
0.15
VIN=3.5V
2.0
1.5
1.0
Temp=25°C
2.0
1.5
Temp=25°C
1.0
0.1
0.2
0.3
0.4
0.5
0.6
0.5
3.00
2.99
2.98
2.97
1.5
Fig.217. STBY Threshold
1.0
VIN=4.0V
STBY=1.5V
Io=0mA
50
3.01
1
STBY Voltage (V)
60
3.02
Temp=-40°C
Temp=85°C
0
Fig.216. OCP Threshold
Gnd Current (uA)
3.03
2.5
Output Current (A)
VIN=4.0V
STBY=1.5V
Io=0.1mA
0.2
0.0
Fig.215. Dropout Voltage
3.04
0.15
0.5
STBY=1.5V
0
0.2
0.1
VIN=4.0V
Io=0mA
3.0
VIN=4.0V
VIN=5.5V
2.5
Output Current (A)
3.05
0.05
Fig.214. Load Regulation
0.0
0
Temp=85°C
3.5
0.5
0.00
5.5
Output Current (A)
Output Voltage (V)
Output Voltage (V)
0.15
5
2.99
0
3.0
Temp=25°C
4.5
3.00
0.2
3.5
0.20
4
Temp=25°C
3.01
Fig.213. IOUT - IGND
Temp=85°C
3.5
3.02
Output Current (A)
Fig.212. VSTBY - ISTBY
0.25
3
2.95
Input Voltage (V)
0.30
2.5
3.03
2.96
1
2
VIN=4.0V
STBY=1.5V
3.04
Temp=85°C
0
0.5
1.5
Fig.211. Circuit Current IGND
0.2
0
1
Input Voltage (V)
Output Voltage (V)
Gnd Current (uA)
STBY Pin Current (uA)
20
3.05
VIN=4.0V
STBY=1.5V
80
0.0
Dropout Voltage (V)
3.2
100
1.4
Temp=25°C
Temp=25°C
40
Temp=-40°C
Fig.210. Line Regulation
1.6
0.4
Temp=85°C
60
Input Voltage (V)
Fig.209. Output Voltage
1.0
VIN=STBY
80
0
Input Voltage (V)
Output Voltage (V)
Io=0uA
3.02
2.96
VIN=STBY
0.5
VIN=STBY
3.03
VIN=4.0V
STBY=0V
0.9
Gnd Current (uA)
Output Voltage (V)
2.5
0
100
Temp=25°C
3.04
3.0
Gnd Current (uA)
3.5
40
30
20
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
0.1
2.96
2.95
0.0
0
-40
-15
10
35
60
Temp (°C)
Fig.218. VOUT - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
-40
-15
10
35
Temp (°C)
Fig.219. IGND - Temp
29/41
60
85
-40
-15
10
35
60
85
Temp (°C)
Fig.220. IGND - Temp (STBY)
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU30TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
IOUT=50mA→0mA
0
3.10
Output Voltage (V)
Output Voltage (V)
3.05
3.00
2.95
2.90
3.05
3.00
2.95
Fig.221. Load Response
Fig.222. Load Response
0
100
50
IOUT=100mA→0mA
0
3.10
Output Voltage (V)
Output Voltage (V)
3.05
3.00
2.95
2.90
3.05
3.00
2.95
Fig.223. Load Response
Fig.224. Load Response
100
0
200
100
IOUT=200mA→0mA
0
3.10
Output Current (mA)
200
Output Current (mA)
IOUT=0mA→200mA
3.20
Output Voltage (V)
Output Voltage (V)
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
3.00
2.90
2.80
3.10
3.00
2.90
Fig.225. Load Response
Fig.226. Load Response
0
100
IOUT=100mA→50mA
50
0
3.05
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
3.10
Output Voltage (V)
Output Voltage (V)
50
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→50mA
3.00
2.95
2.90
Fig.227. Load Response
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
3.05
3.00
2.95
Fig.228. Load Response
30/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU30TD2WNVX (Ta=25℃ unless otherwise specified.)
0.0
4.0
2.0
0.0
4.0
2.0
0.0
Fig.230. Start Up Time
Iout=200mA
Fig.229. Start Up Time
Iout=0mA
4.0
2.0
0.0
4.0
2.0
0.0
Fig.232. Start Up Time
(VIN=STBY) Iout=200mA
Fig.231. Start Up Time
(VIN=STBY) Iout=0mA
5.0
VIN=4.0→5.0V→4.0V
4.0
4.0
3.01
Output Voltage (V)
Output Voltage (V)
0.0
6.0
Input Voltage (V)
2.0
STBY Voltage (V)
4.0
STBY=1.5→0V
2.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
VIN=STBY=0→4.0V
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→4.0V
1.0
STBY=0→1.5V
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY Voltage (V)
1.0
STBY=0→1.5V
STBY Voltage (V)
2.0
2.0
0.0
Fig.233. Discharge Time
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
3.00
2.99
2.98
Fig.234. VIN Response
31/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU31TD2WNVX (Ta=25℃ unless otherwise specified.)
3.14
Output Voltage (V)
3.0
2.5
2.0
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.5
1.0
0.5
Temp=25°C
3.13
3.12
3.11
3.10
3.09
Io=0uA
Io=100uA
Io=50mA
Io=200mA
3.08
3.07
3.06
VIN=STBY
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
3
5.5
3.1
3.2
3.4
3.5
3.6
0
3.7
0.5
1
1.5
Temp=85°C
0.8
0.6
Temp=-40°C
2
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Fig.237. Circuit Current IGND
3.15
VIN=4.1V
STBY=1.5V
80
VIN=4.1V
STBY=1.5V
Temp=85°C
60
40
Temp=-40°C
Temp=25°C
20
3.13
Output Voltage (V)
Gnd Current (uA)
Temp=25°C
3.11
3.09
Temp=85°C
Temp=-40°C
3.07
0.2
3.05
0
1
1.5
2
2.5
3
3.5
4
4.5
5
0
5.5
0.05
Input Voltage (V)
0
0.2
0.25
3.0
Output Voltage (V)
3.5
Temp=85°C
0.20
Temp=25°C
0.15
Temp=-40°C
VIN = 0.98 x VOUT
STBY=1.5V
0.1
0.15
2.5
VIN=5.5V
1.5
1.0
Temp=25°C
2.0
1.5
Temp=25°C
1.0
Temp=-40°C
Temp=85°C
0.5
0.0
0
0.2
0.1
0.2
0.3
0.4
0.5
0
0.6
0.5
Output Current (A)
1.0
VIN=4.1V
STBY=1.5V
Io=0mA
Gnd Current (uA)
50
3.11
3.10
3.09
3.08
3.07
1.5
Fig.243. STBY Threshold
60
VIN=4.1V
STBY=1.5V
Io=0.1mA
1
STBY Voltage (V)
Fig.242. OCP Threshold
3.15
3.12
2.5
STBY=1.5V
Fig.241. Dropout Voltage
3.13
0.2
VIN=4.1V
Io=0mA
3.0
2.0
Output Current (A)
3.14
0.15
3.5
VIN=3.6V
0.0
0.05
0.1
Fig.240. Load Regulation
VIN=4.1V
0.5
0.00
0
0.05
Output Current (A)
Fig.239. IOUT - IGND
0.30
0.05
0.15
Output Current (A)
Fig.238. VSTBY - ISTBY
0.10
0.1
Output Voltage (V)
0.5
VIN=4.1V
STBY=0V
0.9
Gnd Current (uA)
STBY Pin Current (uA)
1.2
0
Dropout Voltage (V)
3.3
100
1.4
0.0
Output Voltage (V)
20
Temp=-40°C
Fig.236. Line Regulation
1.6
Temp=25°C
Temp=25°
40
Input Voltage (V)
Fig.235. Output Voltage
0.4
Temp=85°
60
0
Input Voltage (V)
1.0
VIN=STBY
80
3.05
0.0
0
IO=0uA
VIN=STBY
Gnd Current (uA)
Temp=25°C
Output Voltage (V)
100
3.15
3.5
40
30
20
0.8
0.7
0.6
0.5
0.4
0.3
0.2
10
3.06
0.1
0
3.05
-40
-15
10
35
60
Temp (°C)
Fig.244. VOUT - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
-40
-15
10
35
Temp (°C)
Fig.245. IGND - Temp
32/41
60
85
0.0
-40
-15
10
35
60
85
Temp (°C)
Fig.246. IGND - Temp (STBY)
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU31TD2WNVX (Ta=25℃ unless otherwise specified.)
0
100
50
IOUT=50mA→0mA
3.20
Output Voltage (V)
Output Voltage (V)
3.15
3.10
3.05
3.00
3.15
3.10
3.05
Fig.248. Load Response
Fig.247. Load Response
0
100
50
IOUT=100mA→0mA
3.20
Output Voltage (V)
Output Voltage (V)
3.15
3.10
3.05
3.00
3.15
3.10
3.05
Fig.250. Load Response
Fig.249. Load Response
0
200
100
IOUT=200mA→0mA
0
Output Current (mA)
100
Output Current (mA)
200
IOUT=0mA→200mA
3.30
Output Voltage (V)
3.20
Output Voltage (V)
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=0mA→100mA
3.10
3.00
2.90
3.20
3.10
3.00
Fig.252. Load Response
Fig.251. Load Response
0
100
IOUT=100mA→50mA
50
0
3.15
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
3.20
Output Voltage (V)
Output Voltage (V)
0
Output Current (mA)
50
IOUT=0mA→50mA
Output Current (mA)
100
3.10
3.05
3.00
www.rohm.com
3.10
3.05
Fig.254. Load Response
Fig.253. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
3.15
33/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU31TD2WNVX (Ta=25℃ unless otherwise specified.)
4.0
2.0
0.0
4.0
2.0
0.0
Fig.255. Start Up Time
Iout=0mA
Fig.256. Start Up Time
Iout=200mA
2.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
VIN=STBY=0→4.1V
4.0
2.0
0.0
4.0
2.0
0.0
Fig.258. Start Up Time
(VIN=STBY) Iout=200mA
Fig.257. Start Up Time
(VIN=STBY) Iout=0mA
0.0
6.1
VIN=4.1V→5.1V→4.1V
5.1
4.1
4.0
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
3.11
Output Voltage (V)
Output Voltage (V)
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→4.1V
STBY=1.5→0V
1.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=0→1.5V
2.0
0.0
Fig.259. Discharge Time
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
3.10
3.09
3.08
Fig.260. VIN Response
34/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU33TD2WNVX (Ta=25℃ unless otherwise specified.)
3.5
Temp=25°C
3.34
2.5
2.0
Io=0uA
Io=100uA
Io=50mA
Io=200mA
1.5
1.0
0.5
VIN=STBY
VIN=STBY
3.32
3.31
3.30
3.29
3.28
3.27
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
3.2
3.3
3.4
Input Voltage (V)
3.6
3.7
3.8
0
3.9
1.2
Temp=85°C
0.8
0.6
Temp=-40°C
1.5
2
2.5
3
3.5
4
4.5
5
60
40
Temp=-40°C
Temp=25°C
20
0.05
Input Voltage (V)
3.32
0.1
0.15
0.15
Temp=-40°C
0.10
VIN = 0.98 x VOUT
STBY=1.5V
0.05
3.28
3.27
0.05
0.1
0.15
VIN=5.5V
2.00
1.50
1.00
Temp=25°C
0.50
STBY=1.5V
Fig.267. Dropout Voltage
1.5
Temp=25°C
1.0
0.1
0.2
0.3
0.4
0.5
0.6
0
0.5
3.31
3.30
3.29
3.28
3.27
1
1.5
STBY Voltage (V)
Fig.269. STBY Threshold
1.0
VIN=4.3V
STBY=1.5V
Io=0mA
50
3.32
Temp=-40°C
Temp=85°C
0.5
60
Gnd Current (uA)
3.33
0.2
2.0
Fig.268. OCP Threshold
VIN=4.3V
STBY=1.5V
Io=0.1mA
0.15
2.5
Output Current (A)
3.35
0.1
0.0
0
0.2
Temp=85°C
0.05
VIN=4.3V
Io=0mA
3.0
VIN=4.3V
2.50
Output Current (A)
3.34
Temp=-40°C
3.5
0.9
Gnd Current (uA)
0
5.5
Fig.266. Load Regulation
0.00
0.00
5
Output Current (A)
Output Voltage (V)
Output Voltage (V)
Temp=25°C
4.5
3.29
0
VIN=3.8V
3.00
0.20
4
3.30
0.2
3.50
Temp=85°C
3.5
Temp=25°C
Fig.265. IOUT - IGND
Fig.264. VSTBY - ISTBY
0.25
3
3.31
Output Current (A)
0.30
2.5
3.25
0
5.5
2
3.33
3.26
1
1.5
VIN=4.3V
STBY=1.5V
3.34
Temp=85°C
0
0.5
1
Fig.263. Circuit Current IGND
0.2
0
0.5
Input Voltage (V)
Output Voltage (V)
Gnd Current (uA)
STBY Pin Current (uA)
Temp=-40°C
3.35
VIN=4.3V
STBY=1.5V
80
0.0
Dropout Voltage (V)
3.5
100
1.4
Temp=25°C
20
Fig.262. Line Regulation
1.6
0.4
Temp=25°C
40
Input Voltage (V)
Fig.261. Output Voltage
1.0
Temp=85°C
60
0
3.25
0
VIN=STBY
80
3.26
0.0
Output Voltage (V)
Io=0uA
Io=0uA
Io=100uA
Io=50mA
Io=200mA
3.33
Gnd Current (uA)
Output Voltage (V)
Output Voltage (V)
100
3.35
Temp=25°C
3.0
40
30
20
10
VIN=4.3V
STBY=0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
3.26
0
3.25
-40
-15
10
35
60
Temp (°C)
Fig.270. VOUT - Temp
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
85
0.0
-40
-15
10
35
60
Temp (°C)
Fig.271. IGND - Temp
35/41
85
-40
-15
10
35
60
85
Temp (°C)
Fig.272. IGND - Temp (STBY)
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU33TD2WNVX (Ta=25℃ unless otherwise specified.)
IOUT=0mA→50mA
0
100
50
IOUT=50mA→0mA
0
3.40
Output Voltage (V)
Output Voltage (V)
3.35
3.30
3.25
3.20
3.35
3.30
3.25
Fig.273. Load Response
Fig.274. Load Response
IOUT=0mA→100mA
0
100
50
IOUT=100mA→0mA
0
3.40
Output Voltage (V)
Output Voltage (V)
3.35
3.30
3.25
3.20
3.35
3.30
3.25
Fig.275. Load Response
Fig.276. Load Response
0
200
100
IOUT=200mA→0mA
0
3.40
Output Current (mA)
100
IOUT=0mA→200mA
Output Current (mA)
200
3.50
Output Voltage (V)
Output Voltage (V)
Output Current (mA)
50
Output Current (mA)
100
3.30
3.20
3.10
3.40
3.30
3.20
Fig.277. Load Response
Fig.278. Load Response
0
100
IOUT=100mA→50mA
50
0
Output Current (mA)
50
Output Current (mA)
100
IOUT=50mA→100mA
3.40
Output Voltage (V)
3.35
Output Voltage (V)
Output Current (mA)
50
Output Current (mA)
100
3.30
3.25
3.20
www.rohm.com
3.30
3.25
Fig.280. Load Response
Fig.279. Load Response
© 2011 ROHM Co., Ltd. All rights reserved.
3.35
36/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Reference data BU33TD2WNVX (Ta=25℃ unless otherwise specified.)
4.0
2.0
0.0
4.0
2.0
0.0
Fig.281. Start Up Time
Iout=0mA
Fig.282. Start Up Time
Iout=200mA
4.0
2.0
0.0
4.0
2.0
0.0
Fig.284. Start Up Time
(VIN=STBY) Iout=200mA
Fig.283. Start Up Time
(VIN=STBY) Iout=0mA
5.3
4.3
4.0
3.31
Output Voltage (V)
Output Voltage (V)
0.0
6.3
VIN=4.3V→5.3V→5.3V
Input Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=1.5→0V
2.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
4.0
VIN=STBY=0→4.3V
STBY Voltage (V)
2.0
STBY Voltage (V)
4.0
VIN=STBY=0→4.3 V
1.0
0.0
Output Voltage (V)
Output Voltage (V)
0.0
2.0
STBY=0→1.5V
STBY Voltage (V)
1.0
STBY Voltage (V)
2.0
STBY=0→1.5V
2.0
0.0
Fig.285. Discharge Time
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
3.30
3.29
3.28
Fig.286. VIN Response
37/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
 About power dissipation (Pd)
As for power dissipation, an approximate estimate of the heat reduction characteristics and internal power consumption of
IC are shown, so please use these for reference. Since power dissipation changes substantially depending on the
implementation conditions (board size, board thickness, metal wiring rate, number of layers and through holes, etc.), it is
recommended to measure Pd on a set board. Exceeding the power dissipation of IC may lead to deterioration of the original
IC performance, such as causing operation of the thermal shutdown circuit or reduction in current capability. Therefore, be
sure to prepare sufficient margin within power dissipation for usage.
Calculation of the maximum internal power consumption of IC (PMAX)
PMAX=(VIN-VOUT)×IOUT(MAX.) (VIN: Input voltage VOUT: Output voltage IOUT(MAX): Maximum output current)
○Measurement conditions
Standard ROHM Board
Evaluation Board 1
Top Layer (Top View)
Top Layer (Top View)
Bottom Layer (Top View)
Bottom Layer (Top View)
Measurement State
With board implemented (Wind speed 0 m/s)
With board implemented (Wind speed 0 m/s)
Board Material
Glass epoxy resin (Double-side board)
Glass epoxy resin (Double-side board)
Board Size
70 mm x 70 mm x 1.6 mm
40 mm x 40 mm x 1.6 mm
Top layer
Metal (GND) wiring rate: Approx. 0%
Metal (GND) wiring rate: Approx. 50%
Bottom layer
Metal (GND) wiring rate: Approx. 50%
Metal (GND) wiring rate: Approx. 50%
Diameter 0.5mm x 6 holes
Diameter 0.5mm x 25 holes
Layout of Board for
Measurement
IC Implementation
Position
Wiring
Rate
Through Hole
0.56W
0.39W
θja=178.6°C/W
θja=256.4℃/W
Power Dissipation
Thermal Resistance
0.6
0.56W
0.5
Standard ROHM Board
Pd [W]
0.4
0.39W
0.3
Evaluation Board 1
0.2
* Please design the margin so that PMAX
becomes is than Pd (PMAXPd) within the
usage temperature range.
0.1
0
0
25
50
75
85
100
125
Ta [℃]
Figure 287. SSON004X1010 Power dissipation heat reduction characteristics (Reference)
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
38/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Device Name and Marking
Device Name：
BU□□TD2WNVX
a
Symbol
a
Lot No.
Description
□□
Output
Voltage
Marking
10
1.0V typ.
A
12
1.2V typ.
B
15
1.5V typ.
C
18
1.8V typ.
D
1J
1.85V typ.
E
19
1.9V typ.
F
20
2.0V typ.
G
2A
2.05V typ.
r
21
2.1V typ.
0
23
2.3V typ.
1
25
2.5V typ.
H
26
2.6V typ.
J
27
2.7V typ.
K
28
2.8V typ.
L
2J
2.85V typ.
M
29
2.9V typ.
N
30
3.0V typ.
P
31
3.1V typ.
Q
32
3.2V typ.
R
33
3.3V typ.
U
34
3.4V typ.
Y
4 VIN
1 VOUT
3 STBY
2 GND
Marking
Heatshink is
connected to GND
Fig.288. Package dimension and Marking
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
39/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Notes for use
1) About absolute maximum rating
Breakage may occur when absolute maximum ratings such as applied voltage and operating temperature range are
exceeded. Short mode or open mode cannot be specified at occurrence of a break, so please prepare physical safety
measures (e.g., fuse) if such special mode in which the absolute maximum rating is exceeded can be assumed.
2) About GND potential
Please be sure that the potential of the GND terminal is the lowest in any operating condition.
3) About thermal design
Please provide thermal design with sufficient margin, taking power dissipation (Pd) in actual usage conditions into
consideration.
4) About short between pins and misattachment
Please be careful regarding the IC direction and misalignment at attachment onto a printed circuit board. Misattachment
may cause a break of IC. Short caused by foreign matter between outputs, output and power supply, or GNDs may also
lead to a break.
5) About operation in a strong electromagnetic field
Please note that usage in a strong electromagnetic field may cause malfunction.
6) About common impedance
Please give due consideration to wiring of the power source and GND by reducing common-mode ripple or making ripple
as small as possible (e.g., making the wiring as thick and short as possible, or reducing ripple by LC), etc.
7) About STBY terminal voltage
Set STBY terminal voltage to 0.3 V or less to put each channel into a standby state and to 1.2 V or more to put each
channel into an operating state. Do not fix STBY terminal voltage to 0.3 V or more and 1.2 V or less or do not lengthen
the transition time. This may cause malfunction or failure.
When shorting the VIN terminal and STBY terminal for usage, the status will be “STBY=VIN=LOW” at turning the power
OFF, and discharge of the VOUT terminal cannot operate, which means voltage may remain for a certain time in the
VOUT terminal. Since turning the power ON again in this state may cause overshoot, turn the power ON for use after the
VOUT terminal is completely discharged.
8) About overcurrent protection circuit
Output has a built-in overcurrent protection circuit, which prevents IC break at load short. Note that this protection circuit
is effective for prevention of breaks due to unexpected accidents. Please avoid usage by which the protection circuit
operates continuously.
9) About thermal shutdown
Output is OFF when the thermal circuit operates since a temperature protection circuit is built in to prevent thermal
breakdown. However, it recovers when the temperature returns to a certain temperature. The thermal circuit operates at
emergency such as overheating of IC. Since it is prepared to prevent IC breakdown, please do not use it in a state in
which protection works.
Reverse current
 About reverse current
For applications on which reverse current is assumed to flow into IC,
it is recommended to prepare a path to let the current out
putting a bypass diode between the VIN-VOUT terminals.
VIN
STBY
OUT
by
GND
Fig. 289. Example of bypass diode connection
 About testing on a set board
When connecting a capacitor to a terminal with low impedance for testing on a set board, please be sure to discharge for
each process since IC may be stressed. As a countermeasure against static electricity, prepare grounding in the assembly
process and take sufficient care in transportation and storage. In addition, when connecting a capacitor to a jig in a testing
process, please do so after turning the power OFF and remove it after turning the power OFF.
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
40/41
2011.07 - Rev.C
Technical Note
BU□□TD2WNVX series
●Ordering part number
B
U
1
Part No.
2
T
Output Voltage
D
2
W
N
Line up
10 : 1.0V
12 : 1.2V
15 : 1.5V
18 : 1.8V
1J : 1.85V
19 : 1.9V
20 : 2.0V
2A: 2.05V
21 : 2.1V
23 : 2.3V
25 : 2.5V
26 : 2.6V
27 : 2.7V
28 : 2.8V
2J : 2.85V
29 : 2.9V
30 : 3.0V
31 : 3.1V
32 : 3.2V
33 : 3.3V
34 : 3.4V
V
X
-
T
L
Package
Packaging and forming specification
NVX : SSON004X1010
TL: Embossed tape and reel
SSON004X1010
<Tape and Reel information>
1.0±0.1
0.6MAX
1.0±0.1
1PIN MARK
0.32±0.1
1
2
(0.12)
+0.03
0.02 −0.02
5
.0 0.65±0.05
±0
48
0.
Embossed carrier tape
Quantity
5000pcs
Direction
of feed
S
0.05
Tape
TL
The direction is the 1pin of product is at the lower left when you hold
( reel on the left hand and you pull out the tape on the left hand
)
3-C0.18
R0.05
45º
0.07±0.1
0.25±0.05
3
0.25±0.1
5
.0
±0
48
0.
4
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1pin
Reel
(Unit : mm)
41/41
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2011.07 - Rev.C
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
R1120A