Rohm BAJ0CC0WFP Standard fixed output ldo regulator Datasheet

Standard LDO Regulators
Standard Fixed Output
LDO Regulators
BA□□DD0 Series, BA□□CC0 Series
Standard Fixed Output
LDO Regulators with Shutdown Switch
BA□□DD0W and,BA□□CC0W Series
No.11021ECT01
●Description
Standard Fixed Output LDO Regulators are low-saturation regulators, available for output s up to 2A / 1A. ROHM has a wide
output voltage range and package lineup with and without shutdown switches. This IC has a built-in over-current protection
circuit that prevents the destruction of the IC due to output short circuits, a thermal shut-down circuit that protects the IC from
damage due to overloading and an over-voltage protection circuit that protects the IC from surges generated in the power
supply line of the IC.
●Features
1) Maximum output current : 2A (BA□□DD0),1A(BA□□CC0)
2) ±1% highly accurate output voltage (BA□□DD0)
3) Low saturation with PNP output
4) Built-in over-current protection circuit that prevents the destruction of the IC due to output short circuits
5) Built-in thermal shutdown circuit for protecting the IC from damage due to overloading
6) Built-in over- voltage protection circuit that prevents the destruction of the IC due to power supply surges
7) TO220FP and HRP5 packaging (BA□□DD0) ,TO220FP and TO252 packaging(BA□□CC0)
●Applications
Used in DSP power supplies for DVD and CD players, FPDs, televisions, personal computers or any other consumer device
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© 2011 ROHM Co., Ltd. All rights reserved.
1/11
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
●Line up matrix
■1A BA□□CC0 Series
Part Number
Technical Note
3.0
3.3
5.0
6.0
7.0
8.0
9.0
10
12
15
BA□□CC0WT
○
○
○
-
○
○
○
○
○
-
TO220FP-5
BA□□CC0WFP
-
○
○
○
○
○
○
-
○
-
TO252-5
BA□□CC0T
○
○
○
○
○
○
○
○
○
○
TO220FP-3
○
○
○
○
○
○
○
○
○
○
TO252-3
1.5
1.8
2.5
3.0
3.3
5.0
9.0
12
16
BA□□DD0WT
○
○
○
○
○
○
○
○
○
TO220FP-5
BA□□DD0WHFP
○
○
○
○
○
○
○
○
○
HRP5
BA□□DD0T
○
○
○
○
○
○
○
○
○
TO220FP-3
BA□□CC0FP
■2A BA□□DD0 Series
品 名
Part Number: BA□□CC0□□
a
a
Details
□□
03
a
c
bc
Symbol
Details
Output Voltage Designation
Output Voltage
Output Voltage
□□
(V)
(V)
3.0V(Typ.)
8.0V(Typ.)
08
□□
15
a
Output Voltage Designation
Output Voltage
Output Voltage
□□
(V)
(V)
1.5V(Typ.)
50
5.0V(Typ.)
033
3.3V(Typ.)
09
9.0V(Typ.)
18
1.8V(Typ.)
90
9.0V(Typ.)
05
5.0V(Typ.)
J0
10.0V(Typ.)
25
2.5V(Typ.)
J2
12.0V(Typ.)
06
6.0V(Typ.)
J2
12.0V(Typ.)
30
3.0V(Typ.)
J6
16.0V(Typ.)
07
7.0V(Typ.)
J5
15.0V(Typ.)
33
3.3V(Typ.)
Switch:”With W”:Shutdown switch included
”Without W” :Shutdown switch not included
Package T : TO220FP-5,TO220FP-3
FP : TO252-5,TO252-3
b
パッケージ
Part Number: BA□□DD0□□
bc
Symbol
Package
b
c
Switch:”With W” :Shutdown switch included
”Without W”:Shutdown switch not included
Package T : TO220FP-5,TO220FP-3
HFP: HRP5
●Absolute Maximum Ratings(Ta=25℃)
Parameter
*1
Input Power Supply Voltage
Symbol
Ratings
Unit
VCC
-0.3~+35
V
2300(HRP5)
Power Dissipation*2
Pd
1300(TO252-5)
1200(TO252-3)
mW
2000(TO220FP-3,5)
Operating Temperature Range
Ambient Storage Temperature
Junction Temperature
*3
Output Control Terminal Voltage
Voltage Applied to the Tip
*4
Topr
-40~+125
℃
Tstg
-55~+150
℃
TjMAX.
+150
℃
Vctl
-0.3~+Vcc
V
VCC peak
+50
V
*1 Must not exceed Pd
*2 HRP5 : In cases in which Ta≧25℃ when a 70mm×70mm×1.6mm glass epoxy board is used, the power is reduced by 18.4 mW/℃.
TO252FP-3 : In cases in which Ta≧25℃ when a 70mm×70mm×1.6mm glass epoxy board is used, the power is reduced by 9.6 mW/℃.
TO252FP-5 : In cases in which Ta≧25℃ when a 70mm×70mm×1.6mm glass epoxy board is used, the power is reduced by 10.4 mW/℃.
TO220FP-5 : No heat sink. When Ta≧25℃, the power is reduced by 16 mW/℃.
*3 Only for models with shutdown switches.
*4 Applied voltage : 200msec or less (tr≥1msec)
tr≧1msec
50V
35V
0V
MAX200msec
(Voltage Supply more than 35V)
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© 2011 ROHM Co., Ltd. All rights reserved.
2/11
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
●Recommended Operating Range (Ta=25℃)
Parameter
Input
PowerSupply
Voltage
Output Current
BA□□CC0
BA□□DD0
BA□□CC0
BA□□DD0
Output Control Terminal Voltage
Symbol
VCC
Io
Vctl
Ratings
Unit
Min.
Typ.
Max.
4.0
―
25.0
V
3.0
―
25.0
V
―
―
1
A
―
―
2
A
0
―
VCC
V
●Electrical Characteristics(ABRIDGED)
*5
BA□□CC0 Series (unless specified otherwise, Ta=25℃, VCTL=5.0V(only with switch), Io=500mA,and Vcc= VccD )
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Output Voltage
Vo
Vo×0.98
Vo
Vo×1.02
V
Refer to the lineup for Vo
Circuit Current at Shutdown
Isd
-
0
10
µA
VCTL=0V
Minimum I/O Difference
ΔVd
-
0.3
0.5
V
Vcc= 0.95×Vo
Output Current Capacity
Io
1.0
-
-
A
Input Stability
Reg.I
-
20
100
mV
Vcc= (Vo+1)V → 25V
Load Stability
Reg.L
-
50
100
mV
Io=5mA→1A
Tcvo
-
±0.02
-
%/℃
Output Voltage
*6
Temperature Coefficient
Io=5mA ,Tj=0~125℃
*7
BA00DD0□□ series (unless specified otherwise, Ta=25℃, VCTL=3V(only with switch), Io=500mA,and Vcc=VccD )
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Output Voltage
Vo
Vo×0.99
Vo
Vo×1.01
V
Io=200mA
Circuit Current at Shutdown
Isd
-
0
10
µA
VCTL=0V
Minimum I/O Difference
ΔVd
-
0.45
0.7
V
Vcc= 0.95×Vo, Io=2A
Output Current Capacity
Io
2.0
-
-
A
Input Stability
Reg.I
-
15
50
mV
*7
Vcc= VccD →25V,
Io=200mA
Load Stability
Reg.L
-
50
200
mV
Io=5mA→2A
Tcvo
-
±0.02
-
%/℃
Output Voltage
*6
Temperature Coefficient
Io=5mA ,Tj=0~125℃
*5 Vo=3.0V : Vcc= 8.0V , Vo=3.3V : Vcc=8.3V , Vo=5.0V : Vcc=10.0V , Vo=6.0V : Vcc=11.0V , Vo=7.0V : Vcc=12.0V,
Vo=8.0V : Vcc= 13.0V , Vo=9.0V : Vcc=14.0V , Vo=10.0V : Vcc=15.0V , Vo=12.0V : Vcc=17.0V , Vo=15.0V : Vcc=20.0V
*6 Design guarantee (100% shipping inspection not performed)
*7 Vo=1.5V , 1.8V , 2.5V , 3.0V : Vcc=4.0V , Vo=3.3V , 5.0V : Vcc=7.0V , Vo=9.0V : Vcc=12.0V ,Vo=12V : Vcc=14V , Vo=16V : Vcc=18V
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© 2011 ROHM Co., Ltd. All rights reserved.
3/11
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
●Reference Data (Unless specified otherwise, Vcc=8.3V, Vo=3.3V, VCTL=5.0V, and Io=0mA)
BA□□CC0□□(BA33CC0WT)
[BA033CC0WT]
2.0
1.5
1.0
0.5
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.0
0
2
0
4 6 8 10 12 14 16 18 20
SUPPLY VOLTAGE : Vcc [V]
Fig.1 Circuit current
2.5
2
1.5
1
0.5
1.5
1.0
0.5
0
[BA033CC0WT]
2
400
300
200
100
200
400
600
800
OUTPUT CURRENT : IO [mA]
[BA033CC0WT]
60
50
40
30
20
10
1000
Fig.5 Input/Output Voltage Difference
IOUT(0V=1A)
Fig.4 Load Stability
70
0
0
2000
4 6 8 10 12 14 16 18 20
SUPPLY VOLTAGE : Vcc [V]
[BA033CC0WT]
80
0
4.5
2.0
Fig.3 Input Stability
(Io=500mA)
500
0
400
800
1200
1600
OUTPUT CURRENT : IO[mA]
2.5
RIPPLE REJECTION : R.R. [dB]
3
0
3.0
0.0
4 6 8 10 12 14 16 18 20
SUPPLY VOLTAGE : Vcc [V]
600
DROPOUT VOLTAGE : ΔVd [mV]
OUTPUT VOLTAGE : V OUT [V]
2
3.5
Fig.2 Input Stability
[BA033CC0WT]
3.5
[BA033CC0WFP]
4.0
OUTPUT VOLTAGE : VOUT [V]
2.5
[BA033CC0WFP]
4.0
OUTPUT VOLTAGE : VOUT [V]
CIRCUIT CURRENT : Icc [mA]
3.0
[BA033CC0WT]
200
10
100
1000
10000 100000 1000000
FREQUENCY : f [Hz]
Fig.6 Ripple Rejection Characteristics
(Io=100mA)
[BA033CC0WT]
1000
3.5
3
2.5
CIRCUIT CURRENT : Ictl [µA]
CIRCUIT CURRENT : Icc [mA]
OUTPUT VOLTAGE : VOUT [V]
900
4
150
100
50
800
700
600
500
400
300
200
100
0
0
-20
0
20
40
60
80 100
AMBIENT TEMPERATURE : Ta [℃]
Fig.7 Output Voltage
Temperature Characteristics
6
5
4
3
2
1
0
0 2 4 6 8 10 12 14 16 18 20 22 24
CONTROL VOLTAGE : Vctl [V]
Fig.10 CTL Voltage vs. Output Voltage
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© 2011 ROHM Co., Ltd. All rights reserved.
0
2
4 6 8 10 12 14 16 18 20
CONTROL VOLTAGE:Vctl(V)
Fig.9 CTL Voltage vs. CTL Current
[BA033CC0WFP]
4.0
OUTPUT VOLTAGE : VOUT [V]
OUTPUT VOLTAGE : VOUT [V]
7
0
1000
Fig.8 Circuit Current by load Level
(IOUT=0mA→1A)
[BA033CC0WFP]
8
200
400
600
800
OU TPUT CURRENT:Io(mA)
[BA033CC0WFP]
4.0
3.5
3.5
OUTPUT VOLTAGE : VOUT [V]
2
-40
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
5
10 15 20 25 30 35
SUPPLY VOLTAGE : Vcc [V]
40
Fig.11 Overvoltage Operating
Characteristics (Io=200mA)
4/11
130
140
150
160
170
180
190
AMBIENT TEMPERATURE : Ta [℃]
Fig.12 Thermal Shutdown
Circuit Characteristics
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
●Reference Data (Unless specified otherwise, Vcc=7.0V, Vo=5.0V, VCTL=3.0V, and Io=0mA)
BA□□DD0□□(BA50DD0WT)
[BA50DD0WT]
4
3
2
1
0
OUTPUT VOLTAGE : VOUT [V]
5
[BA50DD0WT]
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
OUTPUT VOLTAGE : VOUT [V]
CIRCUIT CURRENT : Icc [mA]
6
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE : Vcc [V]
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE : Vcc [V]
0 2 4 6 8 10 12 14 16 18 20 22 24
SUPPLY VOLTAGE : Vcc [V]
Fig.14 Input Stability
Fig.15 Input Stability (Io=2A)
[BA50DD0WT]
RIPPLE REJECTION : R.R. [dB]
600
500
400
300
200
100
40
30
20
10
0
Fig.17 Input/Output Voltage Difference
4.9
140
120
100
80
60
40
20
4.8
Fig.19 Temperature Characteristics
6
5
4
3
2
1
0 2 4 6 8 10 12 14 16 18 20 22 24
CONTROL VOLTAGE : VCTL [V]
Fig.22 CTL Voltage vs. Output Voltage
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© 2011 ROHM Co., Ltd. All rights reserved.
400
300
200
100
0 2 4 6
2.0
Fig.21 CTL Voltage vs. CTL Current
8
7
6
5
4
3
2
1
0
5
10 15 20 25 30 35
SUPPLY VOLTAGE : Vcc [V]
40
Fig.23 Overvoltage Operating
5/11
8 10 12 14 16 18 20 22 24
CONTROL VOLYAGE:Vctl(V)
0
0
500
[BA50DD0WT]
8
OUTPUT VOLTAGE : VOUT[V]
7
0.5
1.0
1.5
OUTPUT CURRENT : IOUT [A]
Fig.20 Circuit Current by Load Level
[BA50DD0WT]
8
600
0
0
0.0
-20
0
20 40 60
80 100
AMBIENTTEMPERATURE [℃]
700
OUTPUT VOLTAGE : VOUT [V]
-40
1000 10000 100000 1000000
FREQUENCY : f [Hz]
[BA50DD0WT]
800
CONTROL CURRENT:ICTL(µA)
CIRCUIT CURRENT (mA)
5.0
160
100
Fig.18 Ripple Rejection Characteristics
[BA50DD0WT]
200
180
5.1
10
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
OUTPUT CURRENT : IOUT [A]
[BA50DD0WT]
5.2
OUTPUT VOLTAGE : VOUT [V]
50
0
Fig.16 Load Stability
[BA50DD0WT]
60
700
0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 4.4 4.8
OUTPUT CURRENT : IOUT [A]
OUTPUT VOLTAGE : VOUT [V]
[BA50DD0WT]
800
DROPOUT VOLTAGE : VDRP[mV]
OUTPUT VOLTAGE : V OUT [V]
Fig.13 Circuit Current
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
[BA50DD0WT]
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
[BA50DD0WT]
6
4
2
0
130
140
150
160
170
180
190
AMBIENT TEMPERATURE : Ta [℃]
Fig.24 Thermal Shutdown
Circuit Characteristics
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
●Block Diagrams
BA□□CC0WFP/ BA□□DD0WHFP/ BA□□CC0WT/ BA□□DD0WT
GND(TO252-5・HRP5)
Fin
TOP VIEW
Vcc
PIN No. Pin Name
FIN
1
Driver
Vref
2
R2
OVP
TSD
R1
OCP
1
2
3
4
5
CTL
Vcc
N.C.
OUT
N.C.
1 2 3 45
HRP5
1 2 3 45
TO252-5
3
TOP VIEW
Function
CTL
Output voltage ON/OFF control
Vcc
Power supply voltage input
N.C/GND Unconnected terminal/GND*1
4
OUT
Voltage output
5
N.C
Unconnected terminal
Fin
GND
GND
*2
*1 TO252-5=N.C.,TO220FP-5,HRP5=GND
*2 TO252-5,HRP5 only
(TO252-5)
GND
(TO220FP-5,HRP5)
1 2 3 45
TO220FP-5
Fig.25
BA□□CC0T/ BA□□CC0FP/ BA□□DD0T
GND(TO252-3)
Fin
Vcc
TOP VIEW
FIN
Driver
Vref
TOP VIEW
PIN No. Pin Name
1
2
R2
OVP
TSD
R1
OCP
1
2
3
TO252-3
1
2
3
Vcc
N.C.
OUT
1 2 3
TO220FP-3
Vcc
Function
Power supply voltage input
N.C/GND Unconnected terminal/GND*1
3
OUT
Voltage output
Fin
GND
GND
*2
*1 TO252-3=N.C.,TO-220FP3=GND
*2 TO252-3 only
(TO252-3)
GND
(TO220FP-3)
Fig.26
●Input / Output Equivalent Circuit Diagrams
< BA□□DD0 Series >
< BA□□CC0 Series >
Vcc
Vcc
10kΩ
Vcc
25kΩ
OUT
39kΩ
R2
2kΩ
CTL
CTL
OUT
25kΩ
10kΩ
R2
31kΩ
R1
R1
Fig.28
Fig.27
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© 2011 ROHM Co., Ltd. All rights reserved.
6/11
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
●Thermal Design
HRP-5
10
9
8
5
②5.5W
4
3
2
Power Dissipation:Pd(W)
③7.3W
6
15
10
0
0.0
0
25
0.8
(2)2.0
1
0
1.30
1.2
0.4
5
①2.3W
Mounted on a Rohm standard board
Board size : 70×70×1.6 ㎜
Copper foil area :7×7 ㎜
TO252-5θja=96.2(℃/W)
1.6
20
(1)20.0
7
TO252-5
2.0
When using a maximum heat sick : θj-c=6.25(℃/W)
When using an IC alone : θj-6=62.5(℃/W)
Power Dissipation:Pd(W)
Power Dissipation:Pd(W)
TO220FP-5
25
3
Board size : 70×70×1.6 ㎜ (board contains a thermal via)
2
Board front copper foil area : 10.5×10.5 ㎜
2
①2-layer board (back surface copper foil area :15×15 ㎜ )
2
②2-layer board (back surface copper foil area :70×70 ㎜ )
2
③4-layer board (back surface copper foil area :70×70 ㎜ )
Technical Note
50
75
100
Ambient temperature:Ta(℃)
125
150
0
25
50
75
100
Ambient temperature:Ta(℃)
Fig.29
125
150
0
25
Fig.30
50
75
100
125
Ambient temperature:Ta(℃)
150
Fig.31
When using at temperatures over Ta=25℃, please refer to the heat reducing characteristics shown in Fig.29 through 31. The
IC characteristics are closely related to the temperature at which the IC is used and if the temperature exceeds the maximum
junction temperature TjMAX., the elements may be damaged or destroyed. From the standpoints of instantaneous destruction
and long-term operating reliability, it is necessary give sufficient consideration to IC heat. In order to protect the IC from
thermal damage, it is necessary to operate it at temperatures lower than the maximum junction temperature TjMAX of the IC.
Fig.30 shows the acceptable loss and heat reducing characteristics of the TO220FP package The portion shown by the
diagonal line is the acceptable loss range that can be used with the IC alone. Even when the ambient temperature Ta is a
normal temperature (25℃), the chip (junction) temperature Tj may be quite high so please operate the IC at temperatures
less than the acceptable loss Pd.
The method of calculating the power consumption Pc(W) is as follows.
Pc = (Vcc-Vo) × Io + Vcc × Icca
Acceptable loss Pd≦Pc
Vcc:Input voltage
Vo:Output voltage
Io:Load current
Vcca:Circuit current
Solving this for load current IO in order to operate within the acceptable loss:
Io≦ Pd – Vcc×Icca
Vcc-Vo
(Please refer to Figs.8 and 20 for Icca.)
It is then possible to find the maximum load current IoMAX with respect to the applied voltage Vcc at the time of thermal design.
・Calculation Example
Example 1) When Ta=85℃, Vcc=8.3V, Vo=3.3V, BA33DD0WT
1.04-8.3×Icca
Io≦
5
Io≦200mA (Icca : 2mA)
With the IC alone : θja=62.5℃/W → -16mW/℃
25℃=2000mW → 85℃=1040mW
Please refer to the above information and keep thermal designs within the scope of acceptable loss for all operating
temperature ranges.
The power consumption Pc of the IC when there is a short circuit (short between Vo and GND) is :
Pc=Vcc×(Icca+Ishort)
*Ishort : Short circuit current
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7/11
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
●Peripheral Circuit Considerations
・Vcc Terminal
Please attach a capacitor (greater than 0.33µF) between the Vcc and GND.
The capacitance values will differ depending on the application, so please take this into account when configuring the terminal.
・GND Terminal
Please be sure to keep the set ground and IC ground at the same potential level so that a potential difference does not
arise between them.
If a potential difference arises between the set ground and the IC ground, the preset voltage will not be outputted, causing
the system to become unstable. Therefore, please reduce the impedance by making the ground patterns as wide as
possible and by reducing the distance between the set ground and the IC ground as much as possible.
・CTL Terminal
The CTL terminal is turned ON at 2.0V and higher and OFF at 0.8V and lower within the operating power supply voltage range.
The power supply and the CTL terminal may be started up and shut down in any order without problems.
●Vo Terminal
100
IC
22μF
Unstable operating region
10
Stable operating region
1
Unstable operating region
0.1
0
Fig.32 Output Equivalent Circuit
EFFECTIVE SERIES RESISTANCE:ESR [Ω]
OUT
EFFECTIVE SERIES RESISTANCE:ESR [Ω]
100
200
800
600
400
OUTPUT CURRENT:lo(mA)
1000
Fig.33 ESR-Io Characteristics
(BA□□CC0)
Unstable operating region
10
Stable operating region
1
0.1
Unstable operating region
1
1
100
10
OUTPUT
1000
10000
CURRENT:lo(mA)
Fig.34 ESR vs Io Characteristics
(B A□□DD0)
Please attach an anti-oscillation capacitor between Vcc and GND. The capacitance of the capacitor may significantly change
due to factors such as temperature changes, making it impossible to completely stop oscillations. Please use a tantalum
capacitor or aluminum electrolysis capacitor with favorable characteristics and small internal series resistance (ESR) even at
low temperatures. The output fluctuates regardless of whether the ESR is large or small. Please use the IC within the stable
operating region while referring to the ESR characteristics reference data shown in Figs.32 through 34. In applications where
there are sudden load fluctuations, the use of a capacitor with large capacitance is recommended.
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8/11
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
●Other Points of Caution
1) Protection Circuits
Over-current Protection Circuit
A built-in over-current protection circuit corresponding to the current capacity prevents the destruction of the IC when there
are load shorts. This protection circuit is a “7”-shaped current control circuit that is designed such that the current is restricted
and does not latch even when a large current momentarily flows through the system with a high-capacitance capacitor.
However, while this protection circuit is effective for the prevention of destruction due to unexpected accidents, it is not
suitable for continuous operation or transient use. Please be aware when creating thermal designs that the overcurrent
protection circuit has negative current capacity characteristics with regard to temperature (Refer to Figs.4 and 16).
Thermal Shutdown Circuit (Thermal Protection)
This system has a built-in temperature protection circuit for the purpose of protecting the IC from thermal damage.
As shown above, this must be used within the range of acceptable loss, but if the acceptable loss happens to be
continuously exceeded, the chip temperature Tj increases, causing the temperature protection circuit to operate.
When the thermal shutdown circuit operates, the operation of the circuit is suspended. The circuit resumes operation
immediately after the chip temperature Tj decreases, so the output repeats the ON and OFF states (Please refer to
Figs.12 and 24 for the temperatures at which the temperature protection circuit operates).
There are cases in which the IC is destroyed due to thermal runaway when it is left in the overloaded state. Be sure to
avoid leaving the IC in the overloaded state.
Reverse Current
In order to prevent the destruction of the IC when a reverse current flows through the IC, it is recommended that a diode
be placed between the Vcc and Vo and a pathway be created so that the current can escape (Refer to Fig.35).
Reverse current
Vcc
OUT
CTL
GND
Fig. 36:Bypass diode
2) This IC is bipolar IC that has a P-board (substrate) and P+ isolation layer between each devise, as shown in Fig.36. A P-N
junction is formed between this P-layer and the N-layer of each device, and the P-N junction operates as a parasitic diode
when the electric potential relationship is GND> Terminal A, GND> Terminal B, while it operates as a parasitic transistor
when the electric potential relationship is Terminal B GND> Terminal A. Parasitic devices are structurally inevitable in the
IC. The operation of parasitic devices induces mutual interference between circuits, causing malfunctions and eventually
the destruction of the IC. It is necessary to be careful not to use the IC in ways that would cause parasitic elements to
operate. For example, applying a voltage that is lower than the GND (P-board) to the input terminal.
Transistor (NPN)
(Pin B)
C
B
Resistor
(Pin B)
(Pin A)
E
B
GND
P+
N
N
N
P+
P+
P
N
GND
N
Parasitic element
or transistor
N
N
P
P
Parasitic element
or transistor
E
P+
P
C
Parasitic element
(Pin A)
GND
GND
Parasitic element
GND
Fig. 37: Example of the basic structure of a bipolar IC
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9/11
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
●Ordering part number
B
A
3
Part No.
3
C
Output voltage
C
Series
CC0 : 1A
DD0 : 2A
0
W
H
Shutdown
switch
W : Includes
switch
F
P
Package
HFP :HRP5
FP :TO252-3
TO252-5
T
:TO220FP-3
TO220FP-5
-
T
R
Packaging and forming specification
TR: Embossed tape and reel
(HRP5)
E2: Embossed tape and reel
(TO252-3, TO252-5)
None : Container Tube
V5 :Foaming(V5 only)
HRP5
<Tape and Reel information>
8.82 ± 0.1
(6.5)
0.08±0.05
1.2575
1
2
3
4
0.835±0.2
1.523±0.15
8.0±0.13
(7.49)
1.905±0.1
10.54±0.13
1.017±0.2
9.395±0.125
(MAX 9.745 include BURR)
Tape
Embossed carrier tape
Quantity
2000pcs
Direction
of feed
TR
direction is the 1pin of product is at the upper right when you hold
( The
)
reel on the left hand and you pull out the tape on the right hand
1pin
5
+5.5°
4.5°−4.5°
+0.1
0.27 −0.05
S
0.73±0.1
0.08 S
1.72
Direction of feed
Reel
(Unit : mm)
∗ Order quantity needs to be multiple of the minimum quantity.
TO252-3
<Tape and Reel information>
6.5±0.2
C0.5
1.5±0.2
+0.2
5.1 -0.1
Tape
Embossed carrier tape
Quantity
2000pcs
2.3±0.2
0.5±0.1
Direction
of feed
1.5
2
3
0.8
1
0.65
E2
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 right hand
)
2.5
9.5±0.5
5.5±0.2
FIN
0.65
0.5±0.1
0.75
2.3±0.2
1.0±0.2
2.3±0.2
1pin
Reel
(Unit : mm)
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
TO252-5
<Tape and Reel information>
2.3±0.2
6.5±0.2
C0.5
1.5±0.2
+0.2
5.1 -0.1
0.5±0.1
Tape
Embossed carrier tape
Quantity
2000pcs
Direction
of feed
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 right hand
)
1.5
4 5
0.8
1 2 3
2.5
9.5±0.5
5.5±0.2
FIN
E2
0.5±0.1
0.5
1.27
1.0±0.2
1pin
Reel
(Unit : mm)
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10/11
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2011.03 - Rev.C
BA□□DD0T Series,BA□□CC0T Series,BA□□CC0FP Series
BA□□DD0WT Series,BA□□DD0HFP Series,BA□□CC0WT Series,BA□□CC0WFP Series
Technical Note
TO220FP-3
+0.2
2.8 −0.1
φ3.2±0.1
Container
Tube
Quantity
500pcs
Direction of feed
Direction of products is fixed in a container tube
8.0±0.2
12.0±0.2
<Tape and Reel information>
+0.3
4.5 −0.1
7.0 +0.3
−0.1
5.0±0.2
13.5Min.
+0.4
17.0 −0.2
1.8±0.2
+0.3
10.0 −0.1
1.3
0.8
2.54±0.5
2.54±0.5
1 2
0.55 +0.1
−0.05
2.6±0.5
3
∗ Order quantity needs to be multiple of the minimum quantity.
(Unit : mm)
<Tape and Reel information>
+0.3
4.5 −0.1
+0.2
2.8 −0.1
φ3.2±0.1
Container
Tube
Quantity
500pcs
Direction of feed
Direction of products is fixed in a container tube
8.0±0.2
0.7
+0.4
17.0 −0.2
+0.3
10.0−0.1
+0.3
7.0 −0.1
13.5Min.
12.0±0.2
1.8±0.2
TO220FP-5
1.2
0.8
1.778
0.5±0.1
2.85
1 2 3 4 5
∗ Order quantity needs to be multiple of the minimum quantity.
(Unit : mm)
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11/11
2011.03 - 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.
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More detail product informations and catalogs are available, please contact us.
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R1120A
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