RICOH R1151N

R1151N_E.doc/2003/07/14
Boost type Voltage Regulator with Reset
R1151N SERIES
NO. EA-092-0307
OUTLINE
The R1151N Series are CMOS-based boost type voltage regulator ICs with high output voltage accuracy, low supply current, and high ripple rejection. Each of these voltage regulator controllers consists of a voltage reference unit,
an error amplifier, comparators, resistors for output and reset voltage setting, a current limit protection circuit, and a
chip enable circuit.
In addition to low consumption current by CMOS process, the chip enable function prolongs the battery life. Dynamic response and ripple rejection of the R1151N Series are excellent, further these are low noise type, plus maximum operating input voltage tolerance is up to 18.5V, thus these ICs are very suitable for the power supply for handheld equipment and other power management applications using AC adapter input voltage.
The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs is SOT-23-6
(Mini-mold) package, high density mounting of the ICs on boards is possible.
FEATURES
• Ultra-Low Supply Current ............................................... Typ. 70µA (IOUT=0mA)
• Standby Mode ................................................................... Typ. 0.1µA
• Low Dropout Voltage ....................................................... Typ. 0.1V (IOUT=100mA *Depends on External Transistor)
• High Ripple Rejection ...................................................... Typ. 60dB (f=1kHz)
• Low Temperature-Drift Coefficient of Output Voltage ....... Typ.±100ppm/°C
• High Output Voltage Accuracy ........................................ ±2.0%
• Excellent Dynamic Response
• Small Package .................................................................. SOT-23-6 (Mini-mold)
• Output Voltage.................................................................. Stepwise setting with a step of 0.1V in the range of 2.5V to 9.0V
• Built-in chip enable circuit (2 types; A: active low, B: active high)
• Output Capacitor .............................................................. Tantalum type recommendation (or Ceramic+Series Resistor)
• Built-in output voltage detector ...................................... with delay (C version)
• Detector Threshold Tolerance......................................... ±2.5%
• Detector Threshold Voltage ............................................ Stepwise setting with a step of 0.1V in the range of 1.7V to 8.0V
• Operating Input Voltage ................................................... Max. 18.5V
APPLICATIONS
• Power source for handheld equipment such as cameras and videos.
• Power source for home appliances.
• Power source for battery-powered equipment.
1
R1151N
BLOCK DIAGRAMS
R1151NxxxB
CE
4
1
EXT
VDD 6
3 VOUT
+
-
-
+
Vref
VDET 2
Vref
Current Limit
5 GND
R1151NxxxC
4
CD
1
EXT
VDD 6
3 VOUT
+
-
-
+
Vref
VDET 2
Vref
Current Limit
5 GND
SELECTION GUIDE
The output voltage, mask option code, and the taping type for the ICs can be selected at the user's request. The
selection can be made with designating the part number as shown below;
R1151Nxxxx-xx
←Part Number
↑↑ ↑
a b c
Code
a
b
Contents
Code Number for Voltage Setting
Setting mask option :
A: with CE (active at "L" type)
B: with CE (active at "H" type)
C: with the pin for external capacitor to set the output delay of voltage detector
c
2
Designation of Taping Type :
Ex. TR (Refer to Taping Specifications.)
R1151N
PIN CONFIGURATION
SOT-23-6
6
5
4
VDD
GND
CE/CD
(MARK SIDE)
EXT
VDET
VOUT
1
2
3
PIN DESCRIPTIONS
Pin No.
Symbol
Description
1
EXT
External Transistor Drive Pin
2
VDET
Voltage Detector Output Pin
3
VOUT
Voltage Regulator Output pin
4
CE or CE
Chip Enable Pin (A/B version)
4
CD
5
GND
6
VDD
Pin for External capacitor to set Output Delay of Voltage Detector (C version)
Ground Pin
Input Pin
ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
Item
Input Voltage
Rating
Unit
20
V
VCE/CD
Input Voltage (CE /CE/CD Pin)
-0.3 ∼ VIN+0.3
V
VOUT
Output Voltage (VOUT Pin)
-0.3 ∼ VIN+0.3
V
VEXT
Output Voltage (EXT Pin)
-0.3 ∼ VIN+0.3
V
VDET
Output Voltage (VDET Pin)
-0.3 ∼ VIN+0.3
V
IEXT
EXT Output Current
30
mA
PD
Power Dissipation
150
mW
Topt
Operating Temperature Range
-40 ~ 85
°C
Tstg
Storage Temperature Range
-55 ~ 125
°C
3
R1151N
ELECTRICAL CHARACTERISTICS
• R1151NxxxA/B
Topt=25°C
Symbol
Item
Conditions
VOUT
IOUT = 50mA
×0.98
×1.02
IOUT
Output Current
∆VOUT/∆IOUT
Load Regulation
VDIF
Dropout Voltage
IOUT = 100mA
ISS
Supply Current
Istandby
Supply Current (Standby)
IEXTleak
EXT Leakage Current
RR
Ripple Rejection
VIN
Input Voltage
∆VOUT/∆T
Max.
VOUT
Output Voltage
Line Regulation
Typ.
VIN = Set VOUT+1V
VOUT
∆VOUT/∆VIN
Min.
Unit
V
1Note
VIN - VOUT = 1.0V
VIN = Set VOUT+1V
A
Refer to the Load Regulation Table
1mA ≤ IOUT ≤ 100mA
0.1Note
0.2
V
VIN = Set VOUT+1V, IOUT = 0mA
70
100
µA
VIN = 18.5V
15
Set VOUT+0.5V ≤ VIN ≤ 18.5V
IOUT = 50mA
0.00
f = 1kHz, Ripple 0.5Vp-p
0.02
µA
0.5
µA
0.10
%/V
60
VIN = Set VOUT+1V
dB
18.5
Output Voltage
IOUT = 10mA
Temperature Coefficient
-40°C ≤ Topt ≤ 85°C
Base Current IB of PNP Tr.
ppm
±100
8
V
/°C
27
mA
Ilim
Current Limit
IRPT
Short Current Limit
RUD
CE /CE Pull-up/down Resistance
VCEH
CE /CE Input Voltage "H"
1.5
VIN
V
VCEL
CE /CE Input Voltage "L"
0.00
0.25
V
-VDET
Detector Threshold
VHYS
IOUT2
∆VDET/∆T
VIN - VOUT = 1.0V
Base Current IB of PNP Tr.
VOUT = 0V
0.7
mA
2
MΩ
-VDET
-VDET
×0.975
×1.025
Detector Threshold
-VDET
-VDET
-VDET
Hysteresis Range
×0.03
×0.05
×0.07
2.0
5.0
10.0
Output Current 2
Detector Threshold
Temperature Coefficient
tPLH
Output Delay Time
VDDL
Minimum Operating Voltage
VDD = 1.5V, VDS = 0.5V
-40°C ≤ Topt ≤ 85°C
V
mA
ppm
±100
0.9
V
/°C
0.1
ms
1.1
V
Note: This item depends on the capability of external PNP transistor. Use low saturation type transistor with
hFE value range of 100 to 300.
4
R1151N
• R1151NxxxC
Topt=25°C
Symbol
Item
Conditions
VOUT
VOUT
IOUT = 50mA
×1.02
IOUT
Output Current
∆VOUT/∆IOUT
Load Regulation
VDIF
Dropout Voltage
IOUT = 100mA
ISS
Supply Current
VIN = Set VOUT+1V, IOUT = 0mA
Line Regulation
RR
Ripple Rejection
VIN
Input Voltage
-VDET
Detector Threshold
0.00
0.02
V
100
µA
0.5
µA
0.10
%/V
60
dB
18.5
-40°C ≤ Topt ≤ 85°C
Short Current Limit
∆VDET/∆T
70
VIN = Set VOUT+1V
Temperature Coefficient
IRPT
A
0.1*Note1
f = 1kHz, Ripple 0.5Vp-p
IOUT = 10mA
Current Limit
IOUT2
IOUT = 50mA
Base Current IB of PNP Tr.
VIN - VOUT = 1.0V
8
Base Current IB of PNP Tr.
/°C
27
0.7
VOUT = 0V
-VDET
-VDET
×0.975
×1.025
-VDET
-VDET
-VDET
×0.03
×0.05
×0.07
2.0
5.0
10.0
Detector Threshold
Temperature Coefficient
tPLH
Output Delay Time
VDDL
Minimum Operating Voltage
-40°C ≤ Topt ≤ 85°C
*Note2
CD=220pF
V
V
mA
ppm
±100
0.9
mA
mA
Hysteresis Range
VDD = 1.5V, VDS = 0.5V
V
ppm
±100
Detector Threshold
Output Current 2
V
Refer to the Load Regulation Table
1mA ≤ IOUT ≤ 100mA
Output Voltage
Ilim
VHYS
VIN = Set VOUT+1V
Set VOUT+0.5V ≤ VIN ≤ 18.5V
Unit
1*Note1
VIN - VOUT = 1.0V
EXT Leakage Current
∆VOUT/∆VIN
Max.
×0.98
Output Voltage
∆VOUT/∆T
Typ.
VIN = Set VOUT+1V
VOUT
IEXTleak
Min.
/°C
1.6
2.7
ms
0.9
1.1
V
Note1:This item depends on the capability of external PNP transistor. Use low saturation type transistor with
hFE value range of 100 to 300.
Note2:VDET pin is pulled-up to VDD via 470kΩ resistance. The time is between the rising edge of VOUT level from
0.9V to (+VDET)+2.0V and the reaching point to ((+VDET)+2.0V)/2 of the VDET output voltage.
5
R1151N
• Load Regulation Table
Output Voltage
Load Regulation ∆VOUT/∆
∆IOUT (mV)
VOUT (V)
Typ.
Max.
2.5 to 3.3
20
60
3.4 to 5.0
30
90
5.1 to 7.0
40
130
7.1 to 9.0
50
160
OPERATION
In these ICs, fluctuation of Output Voltage, VOUT is detected by the feed-back registers, and the result is compared
with a reference voltage with the error amplifier and control the base current of an external PNP transistor so that a
constant voltage is output. The base current is monitored with the base current limit circuit. If the base current may
be too large, the protection circuit works, further, output voltage is monitored with the built-in voltage detector. If the
set detector threshold voltage is detected, reset signal will be output.
TECHNICAL NOTES
When using these ICs, consider the following points:
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, be sure to use as much as 10µF capacitor as CL with good frequency characteristics and ESR (Equivalent Series
Resistance).
The best suitable equivalent series resistor value (ESR) is approximately 1Ω.
If the ESR of the output capacitor is too large, output may be unstable, therefore fully evaluation is necessary.
Make VDD and GND lines sufficient. When their impedance of these is high, noise pickup or unstable operation may be
the result. Connect a capacitor with a capacitance value of as much as 10µF between VDD and GND as close as possible
to these pins.
Set external components, especially output capacitor, as close as possible to the ICs.
Refer to the next equation to calculate the output delay time of C version and decide the capacitance value for the delay time.
tPLH =1.83×C/(300×10-9)
C: Capacitance value (F)
Recommended pull-up resistance (R1) value is 470kΩ. If the value is too small, released voltage may shift, therefore,
use 10kΩ or more value resistor.
6
R1151N
TEST CIRCUITS
PNP
PNP
1
1
VIN
IOUT
VIN
3
6
IOUT
3
6
R1151NxxC
R1
2
R1151NxxC
2
4
VDET
5
C2
C1
C2
4
5
C1
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
R1=470kΩ
Ω C1=220pF, C2=10µF
C1=220pF, C2=10µF
PNP
PNP
1
1
VIN
VIN
IOUT
IOUT
3
6
3
6
R1151NxxC
R1151NxxC
P.G.
P.G.
2
2
4
5
4
C2
C1
5
C1
C2
Fig.3 Ripple Rejection, Line Transient Response Test Circuit Fig.4 Load Transient Response Test Circuit
C1=220pF, C2=10µF
C1=220pF, C2=10µF
TYPICAL APPLICATION
OUT
PNP Tr
IN
+
+
VDD
CI
EXT
VOUT
CD R1151NxxxC
CL
R1
+
CD
VDET
RESET
GND
(External Components)
C1 10µF R1=470kΩ PNP Tr.: 2SA1441, 2SB940, 2SB703
CL 10µF
7
R1151N
TYPICAL CHARACTERISTICS
1)
Output Voltage vs. Output Current (Topt=25°C)
a.
External Tr.: 2SA1441
R1151N (VR=9.0V)
R1151N (VR=5.0V)
9.00
8.00
7.00
VIN=10V
VIN=11V
6.00
5.00
VIN=9.5V
VIN=9.3V
4.00
3.00
2.00
1.00
0.00
0
Output Voltage VROUT(V)
Output Voltage VROUT(V)
10.00
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
VIN=7V
VIN=6V
VIN=5.5V
VIN=5.3V
0
500 1000 1500 2000 2500 3000 3500 4000
Output Current IOUT(mA)
Output Current IOUT(mA)
R1151N (VR=2.5V)
3.00
VIN=5.3V
VIN=4.3V
VIN=3.8V
VIN=3.6V
Output Voltage VROUT(V)
Output Voltage VROUT(V)
R1151N (VR=3.3V)
3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.50
1.50
1.00
0.50
500 1000 1500 2000 2500 3000 3500 4000
0
Output Current IOUT(mA)
500 1000 1500 2000 2500 3000 3500 4000
Output Current IOUT(mA)
External Tr.:2SB940
R1151N (VR=9.0V)
R1151N (VR=5.0V)
6.00
9.00
8.00
7.00
6.00
5.00
4.00
VDD=11.0V
VDD=10.0V
VDD=9.5V
VDD=9.3V
3.00
2.00
1.00
0.00
Output Voltage VROUT(V)
Output Voltage VROUT(V)
10.00
5.00
4.00
VDD=7.0V
VDD=6.0V
3.00
VDD=5.3V
VDD=5.5V
2.00
1.00
0.00
0 100 200 300 400 500 600 700 800 900 1000 1100
Output Current IOUT(mA)
8
VDD=4.5V
VDD=3.5V
VDD=3.0V
VDD=2.8V
2.00
0.00
0
b.
500 1000 1500 2000 2500 3000 3500 4000
0 100 200 300 400 500 600 700 800 900 1000 1100
Output Current IOUT(mA)
R1151N
R1151N (VR=3.3V)
R1151N (VR=2.5V)
3.00
3.50
3.00
2.50
VDD=5.3V
VDD=4.3V
VDD=3.8V
2.00
1.50
VDD=3.6V
1.00
0.50
Output Voltage VROUT(V)
Output Voltage VROUT(V)
4.00
2.50
2.00
1.50
1.00
VDD=3.5V
VDD=3.0V
VDD=2.8V
0.50
0.00
0.00
0 100 200 300 400 500 600 700 800 900 1000 1100
0 100 200 300 400 500 600 700 800 900 1000 1100
Output Current IOUT(mA)
Output Current IOUT(mA)
External Tr.:2SB703
R1151N (VR=9.0V)
R1151N (VR=5.0V)
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
6.00
VIN=11.0V
VIN=10.0V
VIN=9.5V
VIN=9.3V
1.00
0.00
Output Voltage VROUT(V)
Output Voltage VROUT(V)
10.00
5.00
VIN=7.0V
4.00
3.00
0.00
0 100 200 300 400 500 600 700 800 900 1000 1100
Output Current IOUT(mA)
R1151N (VR=3.3V)
R1151N (VR=2.5V)
3.50
2.00
3.00
VIN=5.3V
VIN=4.3V
VIN=3.8V
VIN=3.6V
1.50
1.00
0.50
0.00
Output Voltage VROUT(V)
2.50
VIN=5.3V
1.00
Output Current IOUT(mA)
3.00
VIN=6.0V
VIN=5.5V
2.00
0 100 200 300 400 500 600 700 800 900 1000 1100
Output Voltage VROUT(V)
c.
VDD=4.5V
2.50
VIN=4.5V
2.00
1.50
VIN=3.5V
VIN=3.0V
VIN=2.8V
1.00
0.50
0.00
0 100 200 300 400 500 600 700 800 900 1000 1100
Output Current IOUT(mA)
0 100 200 300 400 500 600 700 800 900 1000 1100
Output Current IOUT(mA)
9
R1151N
d.
Output Voltage vs. Base Current (Topt=25°C)
VR=9.0V
VR=5.0V
6.00
9.00
Output Voltage VROUT(V)
Output Voltage VROUT(V)
10.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
5.00
4.00
3.00
2.00
1.00
0.00
0
2
4
6
8
10 12 14 16 18
0
2
Base Current IEXT(mA)
4
Output Voltage VROUT(V)
Output Voltage VROUT(V)
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
4
6
8
10
12
14
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
16
0
Base Current IEXT(mA)
2)
10 12 14 16 18
VR=2.5V
4.00
2
8
Base Current IEXT(mA)
VR=3.3V
0
6
2
4
6
8
10 12 14 16 18
Base Current IEXT(mA)
Output Voltage vs. Input Voltage (Topt=25°C)
External Transistor: 2SA1441
R1151N (VR=5.0V)
R1151N (VR=3.3V)
5.00
4.00
IOUT=0mA
4.00
3.00
2.00
IOUT=500mA
1.00
10
Output Voltage VOUT(V)
Output Voltage VOUT(V)
6.00
3.50
IOUT=0mA
3.00
2.50
2.00
1.50
IOUT=500mA
1.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Input Voltage VIN(V)
Input Voltage VIN(V)
R1151N
R1151N (VR=2.5V)
Output Voltage VOUT(V)
3.00
IOUT=0mA
2.75
2.50
2.25
2.00
1.75
1.50
1.25
IOUT=500mA
1.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Input Voltage VIN(V)
Output Voltage vs. Temperature
R1151N (VR=5.0V)
R1151N (VR=3.3V)
VIN=6.0V
IOUT=80mA
VIN=4.3V
IOUT=80mA
3.375
Output Voltage VROUT(V)
Output Voltage VROUT(V)
5.125
5.075
5.025
4.975
4.925
4.875
-40
-15
10
35
60
85
Temperature Topt(°C)
3.355
3.335
3.315
3.295
3.275
3.255
3.235
3.215
-40
-15
10
35
60
85
Temperature Topt(°C)
R1151N (VR=2.5V)
VIN=3.5V
IOUT=80mA
Output Voltage VROUT(V)
3)
2.538
2.513
2.488
2.463
2.438
-40
-15
10
35
60
85
Temperature Topt(°C)
11
R1151N
4)
Supply Current vs. Input Voltage
External Tr.:2SA1441
R1151N (VR=9.0V, -VD=8.0V)
IOUT=0mA
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
Supply Current ISS(µA)
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
Supply Current ISS(µA)
R1151N (VR=5.0V, -VD=4.2V)
IOUT=0mA
0 1 2 3 4 5 6 7 8 9 10 1112 13 1415 16 17 18
0 1 2 3 4 5 6 7 8 9 10 1112 13 1415 16 17 18
Input Voltage VIN(V)
Input Voltage VIN(V)
R1151N (VR=3.3V, -VD=2.9V)
IOUT=0mA
Supply Current ISS(µA)
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0 1 2 3 4 5 6 7 8 9 10 1112 13 1415 16 17 18
Input Voltage VIN(V)
5)
Supply Current vs. Temperature
a.
External Tr.:2SA1441
R1151N (VR=9.0V)
R1151N (VR=5.0V)
VIN=10V
IOUT=0mA
100
VIN=6V
IOUT=0mA
100
90
Supply Current ISS(µA)
Supply Current ISS(µA)
90
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
Temperature Topt(°C)
12
85
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
Temperature Topt(°C)
85
R1151N
R1151N (VR=3.3V)
R1151N (VR=2.5V)
100
100
90
Supply Current ISS(µA)
Supply Current ISS(µA)
90
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
85
80
70
60
50
40
30
20
10
0
-40
Temperature Topt(°C)
10
35
60
85
Temperature Topt(°C)
External Tr.:2SB703
R1151N (VR=9.0V)
R1151N (VR=5.0V)
90
90
Supply Current ISS(µA)
100
Supply Current ISS(µA)
100
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
85
80
70
60
50
40
30
20
10
0
-40
Temperature Topt(°C)
R1151N (VR=3.3V)
10
35
60
85
R1151N (VR=2.5V)
100
90
Supply Current ISS(µA)
90
80
70
60
50
40
30
20
10
0
-40
-15
Temperature Topt(°C)
100
Supply Current ISS(µA)
b.
-15
-15
10
35
60
Temperature Topt(°C)
85
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
85
Temperature Topt(°C)
13
R1151N
6)
Ripple Rejection vs. Ripple Frequency (Topt=25°C)
R1151N (VR=9.0V)
VIN=10Vdc+0.5Vp-p, Iout=50mA, CL=10µF
80
70
60
2SB703
50
2SA1441
2SB940
40
30
20
10
0
0.01
0.1
1
10
VIN=6Vdc+0.5Vp-p, Iout=50mA, CL=10µF
80
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
R1151N (VR=5.0V)
70
60
2SB703
50
2SA1441
2SB940
40
30
20
10
0
0.01
100
Ripple Frequency (kHz)
2SB703
2SA1441
2SB940
40
30
20
10
0
0.01
0.1
70
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
70
50
1
10
60
2SB703
50
2SA1441
2SB940
40
30
20
10
0
0.01
100
0.1
1
10
100
Ripple Frequency (kHz)
Ripple Rejection vs. Temperature
R1151N (VR=5.0V)
73
71
69
67
65
R1151N (VR=3.3V)
VIN=6Vdc+0.5Vp-p, Iout=50mA, CL=10µF
75
2SA1441
Ripple Rejection RR(dB)
Ripple Rejection RR(dB)
75
2SB940
2SB703
63
61
59
57
55
-40
-15
10
35
60
Temperature Topt(°C)
14
100
VIN=3.5Vdc+0.5Vp-p, Iout=50mA, CL=10µF
Ripple Frequency (kHz)
7)
10
R1151N (VR=2.5V)
VIN=4.3Vdc+0.5Vp-p, Iout=50mA, CL=10µF
60
1
Ripple Frequency (kHz)
R1151N (VR=3.3V)
80
0.1
85
VIN=4.3Vdc+0.5Vp-p, Iout=50mA, CL=10µF
73
71
69
2SB703
67
65
63
61
59
57
55
-40
2SA1441
-15
10
35
2SB940
60
Temperature Topt(°C)
85
R1151N
R1151N (VR=2.5V)
Ripple Rejection RR(dB)
70
VIN=3.5Vdc+0.5Vp-p, Iout=50mA, CL=10µF
2SB940
2SB703
65
60
2SA1441
55
50
45
-40
-15
10
35
60
85
Temperature Topt(°C)
Input Transient Response(Topt=25°C)
a.
External Tr.:2SA1441
R1151N (VR=5.0V)
7
5.020
Input Voltage
6
5
5.010
4
Output Voltage
3
2
5.000
1
4.990
0
IOUT=50mA
COUT=Ceramic 10µF
3.340
8
Input Voltage VIN(V)
Output Voltage VOUT(V)
5.030
R1151N (VR=3.3V)
0
25 50 75 100 125 150 175 200 225 250
Output Voltage VOUT(V)
IOUT=50mA
COUT=Ceramic 10µF
3.330
5
Input Voltage
3.320
4
3.310
3
Output Voltage
3.300
2
3.290
1
3.280
0
Time (µs)
6
Input Voltage VIN(V)
8)
0
25 50 75 100 125 150 175 200 225 250
Time (µs)
R1151N (VR=2.5V)
Output Voltage VOUT(V)
2.535
Input Voltage
2.525
2.515
5
4
3
Output Voltage
2.505
2.495
2
1
2.485
0
Input Voltage VIN(V)
IOUT=50mA
COUT=Ceramic 10µF
0
25 50 75 100 125 150 175 200 225 250
Time (µs)
15
R1151N
External Tr.: 2SB703
R1151N (VR=5.0V)
5.025
7
Input Voltage
5.020
5.015
6
5
5.010
4
Output Voltage
5.005
3
5.000
2
4.995
1
4.990
0
IOUT=50mA
COUT=Ceramic 10µF
3.340
8
Output Voltage VOUT(V)
Output Voltage VOUT(V)
5.030
R1151N (VR=3.3V)
Input Voltage VIN(V)
IOUT=50mA
COUT=Ceramic 10µF
0
25 50 75 100 125 150 175 200 225 250
3.330
Input Voltage
3.320
6
5
4
3.310
3
Output Voltage
3.300
2
3.290
1
3.280
0
Time (µs)
Input Voltage VIN(V)
b.
0
25 50 75 100 125 150 175 200 225 250
Time (µs)
R1151N (VR=2.5V)
Output Voltage VOUT(V)
2.535
2.525
Input Voltage
2.515
5
4
3
Output Voltage
2.505
2.495
2
1
2.485
0
Input Voltage VIN(V)
IOUT=50mA
COUT=Ceramic 10µF
0
25 50 75 100 125 150 175 200 225 250
Time (µs)
External Tr. : 2SB940
R1151N (VR=5.0V)
5.025
7
5.020
Input Voltage
5.015
5
5.010
4
Output Voltage
5.005
3
5.000
2
4.995
1
4.990
0
0
25 50 75 100 125 150 175 200 225 250
Time (µs)
16
6
IOUT=50mA
COUT=Ceramic 10µF
3.340
8
Output Voltage VOUT(V)
Output Voltage VOUT(V)
5.030
R1151N (VR=3.3V)
Input Voltage VIN(V)
IOUT=50mA
COUT=Ceramic 10µF
3.330
6
5
Input Voltage
3.320
4
3.310
3
Output Voltage
3.300
2
3.290
1
3.280
0
0
25 50 75 100 125 150 175 200 225 250
Time (µs)
Input Voltage VIN(V)
c.
R1151N
R1151N (VR=2.5V)
Output Voltage VOUT(V)
2.535
2.525
Input Voltage
2.515
5
4
3
Output Voltage
2.505
2.495
2
1
2.485
0
Input Voltage VIN(V)
IOUT=50mA
COUT=Ceramic 10µF
0
25 50 75 100 125 150 175 200 225 250
Time (µs)
Load Transient Response (Topt=25°C)
a:
External Tr.: 2SA1441
R1151N (VR=5.0V)
100
Output Current
5.03
80
5.02
60
5.01
Output Voltage
5.00
4.99
3.35
120
40
20
0
0 100 200 300 400 500 600 700 800 900 1000
Output Voltage VOUT(V)
5.04
R1151N (VR=3.3V)
Output Current IOUT(mA)
Output Voltage VOUT(V)
5.05
VIN=6.0V
CIN=Ceramic 4.7µF
COUT=Ceramic 10µF
3.34
120
100
Output Current
3.33
80
3.32
60
3.31
Output Voltage
3.30
3.29
Time (µs)
VIN=4.3V
CIN=Ceramic 4.7µF
COUT=Ceramic 10µF
Output Current IOUT(mA)
9)
40
20
0
0 100 200 300 400 500 600 700 800 900 1000
Time (µs)
R1151N (VR=2.5V)
2.54
120
100
Output Current
2.53
80
2.52
60
2.51
Output Voltage
2.50
2.49
Output Current IOUT(mA)
Output Voltage VOUT(V)
2.55
VIN=3.5V
CIN=Ceramic 4.7µF
COUT=Ceramic 10µF
40
20
0
0 100 200 300 400 500 600 700 800 900 1000
Time (µs)
17
R1151N
External Tr.: 2SB703
R1151N (VR=5.0V)
100
Output Current
5.03
80
5.02
60
Output Voltage
5.01
40
5.00
4.99
20
0
0 100 200 300 400 500 600 700 800 900 1000
Output Voltage VOUT(V)
5.04
VIN=4.3V
CIN=Ceramic 4.7µF
COUT=Ceramic 10µF
3.35
120
Output Current IOUT(mA)
5.05
Output Voltage VOUT(V)
R1151N (VR=3.3V)
VIN=6.0V
CIN=Ceramic 4.7µF
COUT=Ceramic 10µF
3.34
120
100
Output Current
3.33
80
3.32
60
3.31
40
Output Voltage
3.30
3.29
20
0
0 100 200 300 400 500 600 700 800 900 1000
Time (µs)
Time (µs)
R1151N (VR=2.5V)
Output Voltage VOUT(V)
2.55
2.54
120
100
Output Current
2.53
80
2.52
60
Output Voltage
2.51
40
2.50
20
2.49
Output Current IOUT(mA)
VIN=3.5V
CIN=Ceramic 4.7µF
COUT=Ceramic 10µF
0
0 100 200 300 400 500 600 700 800 900 1000
Time (µs)
10) Detector Threshold vs. Temperature
R1151N (-VDET=8.0V)
R1151N (-VDET=4.2V)
4.60
Detector Threshold VDET(V)
Detector Threshold VDET(V)
8.70
8.60
8.50
8.40
8.30
8.20
8.10
8.00
7.90
7.80
-40
-15
10
35
60
Temperature Topt(°C)
18
85
Output Current IOUT(mA)
b.
4.50
4.40
4.30
4.20
4.10
4.00
-40
-15
10
35
60
Temperature Topt(°C)
85
R1151N
R1151N (-VDET=2.9V)
R1151N (-VDET=1.7V)
1.85
Detector Threshold VDET(V)
Detector Threshold VDET(V)
3.10
3.05
3.00
2.95
2.90
2.85
2.80
-40
-15
10
35
60
1.80
1.75
1.70
1.65
1.60
-40
85
-15
Temperature Topt(°C)
10
35
60
85
Temperature Topt(°C)
11) VDET Output Voltage vs. Input Voltage
R1151N (-VDET=8.0V Pull-up to 5V)
9.0
VDET Output Voltage VDOUT(V)
VDET Output Voltage VDOUT(V)
R1151N (-VDET=8.0V Pull-up to VDD)
8.0
7.0
6.0
5.0
4.0
Topt=-40°C
3.0
Topt=25°C
Topt=85°C
2.0
1.0
0.0
0
1
2
3
4
5
6
7
8
6.00
5.00
4.00
3.00
1.00
0.00
9
0
Input Voltage VIN(V)
3.5
3.0
2.5
2.0
1.5
1.0
Topt=-40°C
Topt=25°C
Topt=85°C
0.5
0.0
2
3
4
5
6
7
8
9
R1151N (-VDET=4.2V Pull-up to 5V)
VDET Output Voltage VDOUT(V)
VDET Output Voltage VDOUT(V)
4.5
4.0
1
Input Voltage VIN(V)
R1151N (-VDET=4.2V Pull-up to VDD)
5.0
Topt=-40°C
Topt=25°C
Topt=85°C
2.00
6.0
5.0
4.0
3.0
2.0
1.0
Topt=-40°C
Topt=25°C
Topt=85°C
0.0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Input Voltage VIN(V)
Input Voltage VIN(V)
19
R1151N
R1151N (-VDET=2.9V Pull-up to 5V)
4.0
VDET Output Voltage VDOUT(V)
VDET Output Voltage VDOUT(V)
R1151N (-VDET=2.9V Pull-up to VDD)
3.5
3.0
2.5
2.0
Topt=-40°C
1.5
Topt=25°C
1.0
Topt=85°C
0.5
0.0
0
0.5
1
1.5
2
2.5
3
3.5
6.0
5.0
4.0
3.0
Topt=-40°C
2.0
Topt=25°C
Topt=85°C
1.0
0.0
4
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Input Voltage VIN(V)
R1151N (-VDET=1.7V Pull-up to VDD)
R1151N (-VDET=1.7V Pull-up to 5V)
2.5
6.0
VDET Output Voltage VDOUT(V)
VDET Output Voltage VDOUT(V)
Input Voltage VIN(V)
2.3
2.0
1.8
1.5
1.3
1.0
0.8
0.5
Topt=-40°C
Topt=25°C
Topt=85°C
0.3
0.0
5.0
4.0
3.0
2.0
Topt=-40°C
Topt=25°C
1.0
Topt=85°C
0.0
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
Input Voltage VIN(V)
Input Voltage VIN(V)
12) Nch Driver Output Current vs. VDS (Topt=25°C)
R1151N (-VDET=8.0V)
VDD=7.5V
120
VDD=7.0V
VDD=6.5V
VDD=6.0V
VDD=5.5V
VDD=5.0V
VDD=4.5V
VDD=4.0V
VDD=3.5V
VDD=3.0V
VDD=2.0V
VDD=2.5V
VDD=1.5V
VDD=1.0V
100
80
60
40
20
0
0
1
2
3
4
5
6
VDS(V)
20
R1151N (-VDET=4.2V)
60
7
8
9 10
VDD=4.0V
Output Current IOUT(mA)
Output Current IOUT(mA)
140
50
VDD=3.5V
40
VDD=3.0V
30
VDD=2.5V
20
VDD=2.0V
10
VDD=1.5V
VDD=1.0V
0
0
1
2
3
VDS(V)
4
5
6
R1151N
R1151N (-VDET=2.9V)
R1151N (-VDET=1.7V)
8
VDD=2.5V
25
Output Current IOUT(mA)
Output Current IOUT(mA)
30
20
15
VDD=2.0V
10
VDD=1.5V
5
VDD=1.0V
0
0
0.5
1
1.5
VDD=1.5V
7
6
5
4
VDD=1.25V
3
2
VDD=1.0V
1
0
2
2.5
3
0
0.5
1
VDS(V)
1.5
2
VDS(V)
13) Nch Driver Output Current vs. Input Voltage
R1151N (-VDET=8.0V)
R1151N (-VDET=4.2V)
40
Topt=85°C
35
Output Current IOUT(mA)
Output Current IOUT(mA)
40
Topt=25°C
30
Topt=-40°C
25
20
15
10
5
0
35
30
Topt=85°C
25
Topt=25°C
20
Topt=-40°C
15
10
5
0
0
2
4
6
8
10
0
1
Input Voltage VIN(V)
35
35
30
Topt=85°C
Topt=25°C
20
Topt=-40°C
15
3
4
5
2
2.5
R1151N (-VDET=1.7V)
40
Output Current IOUT(mA)
Output Current IOUT(mA)
R1151N (-VDET=2.9V)
40
25
2
Input Voltage VIN(V)
10
5
0
30
Topt=85°C
25
Topt=25°C
20
15
Topt=-40°C
10
5
0
0
1
2
3
Input Voltage VIN(V)
4
0
0.5
1
1.5
Input Voltage VIN(V)
21
R1151N
14) CD pin Threshold Voltage vs. Temperature
R1151N (-VDET=1.7V)
CD pin Threshold Voltage Vtcd(V)
CD pin Threshold Voltage Vtcd(V)
R1151N (-VDET=8.0V)
3.0
2.8
2.6
2.4
2.2
L→H
2.0
1.8
1.6
H→L
1.4
1.2
1.0
-40
-15
10
35
60
85
3.0
2.8
2.6
2.4
2.2
L→H
2.0
1.8
1.6
H→L
1.4
1.2
1.0
-40
Temperature Topt(°C)
-15
10
35
60
85
Temperature Topt(°C)
15) CD Pin Output Current vs. Input Voltage
R1151N (-VDET=4.2V)
0.40
0.35
0.30
Topt=-40°C
Topt=25°C
0.25
Topt=85°C
0.20
0.15
0.10
0.05
0.00
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
CD pin Output Current IOUT(mA)
CD pin Output Current IOUT(mA)
R1151N (-VDET=8.0V)
0.45
0.45
0.40
0.35
0.30
0.20
0.15
0.10
0.05
0.00
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0.40
0.35
Topt=-40°C
Topt=25°C
0.20
0.15
Topt=85°C
0.05
0.00
0.0
0.5
1.0
1.5
2.0
2.5
Input Voltage VIN(V)
22
R1151N (-VDET=1.7V)
CD pin Output Current IOUT(mA)
CD pin Output Current IOUT(mA)
R1151N (-VDET=2.9V)
0.10
Topt=85°C
Input Voltage VIN(V)
0.45
0.25
Topt=25°C
0.25
Input Voltage VIN(V)
0.30
Topt=-40°C
3.0
3.5
0.45
0.40
0.35
0.30
0.25
0.20
0.15
Topt=85°C
Topt=-40°C
Topt=25°C
0.10
0.05
0.00
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Input Voltage VIN(V)
R1151N
16) CD Pin Output Current vs. VDS (Topt=25°C)
R1151N (-VDET=4.2V)
CD pin Output Current IOUT(mA)
CD pin Output Current IOUT(mA)
R1151N (-VDET=8.0V)
6
VDD=7.5V
5
VDD=7.0V
VDD=6.5V
VDD=6.0V
VDD=5.5V
VDD=5.0V
VDD=4.5V
VDD=4.0V
VDD=3.5V
VDD=3.0V
VDD=2.5V
VDD=2.0V VDD=1.5V
4
3
2
1
0
0
1
2
3
4
5
6
7
8
2.5
VDD=4.0V
2.0
VDD=3.5V
1.5
VDD=3.0V
1.0
VDD=2.5V
0.5
VDD=2.0V
VDD=1.5V
0
9
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
VDS(V)
VDS(V)
R1151N (-VDET=1.7V)
0.90
0.80
0.70
0.60
0.50
CD pin Output Current IOUT(mA)
CD pin Output Current IOUT(mA)
R1151N (-VDET=2.9V)
1.00
VDD=2.4V
VDD=2.0V
0.40
0.30
VDD=1.5V
0.20
0.10
0.00
0
0.5
1
1.5
2
2.5
0.20
VDD=1.5V
0.18
0.16
0.14
0.12
0.10
0.08
0.06
VDD=1.2V
0.04
0.02
0.00
3
0
0.25 0.5 0.75
VDS(V)
1
1.25 1.5 1.75
VDS(V)
17) Output Delay Time of Release vs. Temperature
R1151N (-VDET=1.7V)
External Capacitance=220pF
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
-40
-15
10
35
60
Temperature Topt(°C)
85
Output Delay Time of Release tPLH(ms)
Output Delay Time of Release tPLH(ms)
R1151N (-VDET=8.0V)
External Capacitance=220pF
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
-40
-15
10
35
60
85
Temperature Topt(°C)
23
R1151N
18) Output Delay Time of Release vs. External Capacitance for CD pin (Topt=25°C)
R1151N (-VDET=1.7V)
10
1
0.1
10
100
1000
Output Delay Time of Release tPLH(ms)
Output Delay Time of Release tPLH(ms)
R1151N (-VDET=8.0V)
100
100
10
1
0.1
10
External Capacitance for CD pin CD(pF)
100
1000
External Capacitance for CD pin CD(pF)
19) Output Delay Time of Detect vs. External Capacitance for CD pin (Topt=25°C)
R1151N (-VDET=4.2V)
Output Delay Time of Detect tPHL(µs)
Output Delay Time of Detect tPHL(µs)
R1151N (-VDET=8.0V)
10
1
10
100
10
1
1000
10
External Capacitance for CD pin CD(pF)
1
100
1000
External Capacitance for CD pin CD(pF)
24
1000
R1151N (-VDET=1.7V)
Output Delay Time of Detect tPHL(µs)
Output Delay Time of Detect tPHL(µs)
R1151N (-VDET=2.9V)
10
10
100
External Capacitance for CD pin CD(pF)
10
1
10
100
1000
External Capacitance for CD pin CD(pF)
R1151N
Calculation of Output Delay Time of Release
tPLH(s)=1.83×C/(300×10-9)
Released Delay Time tPLH(ms)
tPHL vs. Capacitance
30
25
20
15
10
Measured value
Calculated value
5
0
0
1000
2000
3000
4000
5000
External Capacitance for CD pin (pF)
For Stable Operation
Phase Compensation
In these ICs, phase compensation is externally made for securing stable operation even if the load current is varied.
For this purpose, be sure to use a capacitor for the output pin with good frequency characteristics and ESR (Equivalent
Series Resistance) of which is in the range described as follows:
VDET
CD
EXT
VIN
VIN
Ceramic
Capacitor
4.7µF
R1151NxxxxC
VOUT
GND
Ceramic
Capacitance
10µF
Spectrum
Analyser
S.A.
ESR
IOUT
Measuring Circuit for white noise; R1151NxxxC
The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below. The conditions when the
white noise level is under 40µV (Avg.) are marked as the hatched area in the graph.
<Measurement conditions>
(1) VIN=VOUT+1V
(2) Frequency band: 10Hz to 1MHz
(3) Temperature: 25°C
(4) COUT: Ceramic 10µF; ESR=0.075Ω (10kHz)
25
R1151N
VR=9.0V (2SA1441)
Equivalent Series Resistance ESR (Ω)
Equivalent Series Resistance ESR (Ω)
VR=2.5V (2SA1441)
100
10
1
0.1
0.01
0
100
10
1
0.1
0.01
50 100 150 200 250 300 350 400 450 500
0
Output Current IOUT(mA)
Output Current IOUT(mA)
VR=9.0V (2SB703)
Equivalent Series Resistance ESR (Ω)
Equivalent Series Resistance ESR (Ω)
VR=2.5V (2SB703)
100
10
1
0.1
0.01
0
100
10
1
0.1
0.01
50 100 150 200 250 300 350 400 450 500
0
Output Current IOUT(mA)
1
0.1
0.01
0
50 100 150 200 250 300 350 400 450 500
Output Current IOUT(mA)
26
VR=9.0V (2SB940)
Equivalent Series Resistance ESR (Ω)
Equivalent Series Resistance ESR (Ω)
10
50 100 150 200 250 300 350 400 450 500
Output Current IOUT(mA)
VR=2.5V (2SB940)
100
50 100 150 200 250 300 350 400 450 500
100
10
1
0.1
0.01
0
50 100 150 200 250 300 350 400 450 500
Output Current IOUT(mA)