Secondary LDO Regulator Series for Local Power Supplies
1.5A Secondary LDO Regulators
for Local Power Supplies
BA□□JC5 Series,BA00JC5W Series
No.09024EAT03
Description
The BA□□JC5 are low-saturation regulators with an output current of 1.5 A and a voltage accuracy of
1%.
A broad output
voltage range is offered, from 1.5V to 12V, and built-in overcurrent protection and thermal shutdown (TSD) circuits prevent
damage due to short-circuiting and overloading, respectively.
Features
1) Output current: 1.5A (min.)
2) Output voltage accuracy:
1%
3) Broad output voltage range available: 1.5V -12V (BA□□JC5 series)
4) Low saturation-voltage type with PNP output
5) Built-in overcurrent protection circuit
6) Built-in thermal shutdown circuit
7) Integrated shutdown switch (BA□□JC5WT)
8) Operating temperature range:
−40℃
to +105℃
Applications
All electronic devices that use microcontrollers and logic circuits
Product
Lineup
Part Number
BA□□JC5T
BA□□JC5WT
1.5
-
1.8
-
2.5
-
3.0
-
3.3
-
5.0
-
6.0
-
7.0
-
8.0
-
9.0
-
12.0
-
Variable
-
Package
TO220FP-3
TO220FP-5 (V5)
Part Number: BA□□JC5□
□
a
b c
Symbol
Description
Output voltage specification
□□
Output voltage (V)
□□
15
1.5 V typ
60
18
1.8 V typ
70
25
2.5 V typ
80
30
3.0 V typ
90
33
3.3 V typ
J2
50
5.0 V typ
00
Existence of switch With W: A shutdown switch is provided.
Without W: No shutdown switch is provided.
Package T:
TO20FP-5, TO220FP-5V5, TO220FP-3
a
Output voltage (V)
6.0 V typ
7.0 V typ
8.0 V typ
9.0 V typ
12.0 V typ
Variable
b
c
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© 2009 ROHM Co., Ltd. All rights reserved.
1/9
2009.04 - Rev.A
BA□□JC5 Series,BA00JC5W Series
Absolute
Maximum Ratings (Ta = 25℃)
Parameter
Power supply voltage
Power dissipation
Operating temperature range
Ambient storage temperature
Maximum junction temperature
*1 Must not exceed Pd
*2 Derated at 16mW/℃ at Ta>25℃
Technical Note
Symbol
V
CC
TO220FP-3
TO220FP-5
TO220FP-5V5
P
d
T
opr
T
stg
T
jmax
Limits
18
*1
2000
*2
2000
*2
2000
*2
−40
to +105
−55
to +150
150
Unit
V
mW
℃
℃
℃
Recommended
Operating Conditions
Parameter
Input power supply voltage
Input power supply voltage
Output current
Variable output voltage setting value
*3 When output voltage is 1.5 V, 1.8 V, or 2.5 V.
*4 When output voltage is 3.0 V or higher.
Symbol
V
CC*3
Vc
C*4
I
o
V
o
Min.
3.0
V
o
+ 1.0
-
1.5
Max.
16.0
16.0
1.5
12
Unit
V
V
A
V
Electrical
Characteristics
BA□□JC5T(Unless otherwise specified, Ta = 25℃; Vcc = V
CCDC*5
)
Parameter
Symbol
Min.
Typ.
Vo (T)
Output voltage
Vo
Vo (T)
0.99
Minimum I/O voltage difference
*6
∆Vd
-
0.3
Output current capacity
Io
1.5
-
Input stability
*7
Load stability
Temperature coefficient of output voltage
*8
Reg.I
Reg.L
Tcvo
-
-
-
5
5
0.02
Max.
Vo (T)
1.01
0.5
-
60
60
-
Unit
V
V
A
mV
mV
%/℃
Conditions
Io = 200 mA
Io = 200 mA, Vcc = 0.95
Vo
Vcc = Vo + 1.0 V→16 V,
Io = 200 mA
Io = 5 mA→1.5 A
Io = 5 mA, Tj = 0℃ to 125℃
Vo (T): Set output voltage
*5
Vo = 1.5 V, 1.8 V, 2.5 V : Vcc = 3.3 V, Vo = 3.0 V, 3.3 V : Vcc = 5 V,
Vo = 5.0 V : Vcc : 8 V, Vo = 6.0 V, 6.3 V : Vcc = 9.0 V, Vo = 8.0 V : Vcc = 11 V,
Vo = 9.0 V : Vcc = 12 V, Vo = 12 V : Vcc = 15 V
*6
Vo
≥
3.3 V
*7
Change Vcc from 3.0 V to 16 V if 1.5 V
≤
Vo
≤
2.5 V.
*8
Operation guaranteed
BA00JC5WT (−V5)(Unless otherwise specified, Ta = 25℃, Vcc = 3.3 V, V
CTL
= 3 V, R1 = 30 k, R2 = 30 k
*9
)
Parameter
Symbol Min.
Typ.
Max.
Unit
Conditions
Reference voltage
Vo
1.2375 1.250 1.2625
V
Io = 50 mA
Shutdown circuit current
Isd
-
0
10
A
V
CTL
= 0 V while in OFF mode
Minimum I/O voltage difference
∆Vd
-
0.3
0.5
V
Io = 500 mA, Vcc = 2.5 V
Output current capacity
Io
1.5
-
-
A
Input stability
Reg.I
-
5
60
mV Vcc = 4.5 V→16 V, Io = 200 mA
Load stability
Reg.L
-
5
60
mV Io = 5 mA
→1.5
A
*10
Temperature coefficient of output voltage
Tcvo
-
0.02
-
%/℃ Io = 5 mA, Tj = 0℃ to 125℃
*9
*10
VOUT = Vc
(R1 + R2) / R1 (V)
Design guarantee (No total shipment inspection is made.)
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© 2009 ROHM Co., Ltd. All rights reserved.
2/9
2009.04 - Rev.A
BA□□JC5 Series,BA00JC5W Series
Technical Note
Electrical
Characteristics Curves
(Unless otherwise specified, Ta = 25℃; Vcc = 8 V; V
CTL
= 3 V; I
O
= 0 mA)
0.6
CI RCUI T
Ｃ
URRENT
：
Icc [mA]
0.5
6
6
[BA50JC5T]
[BA50JC5T]
0.4
0.3
0.2
0.1
0
0
2
4
6
8
10 12
14
SUPPLY VOLTAGE
：
Vcc [V]
16
[BA50JC5T]
OUTPUT VOLTAGE
：
V
OUT
[V]
5
4
3
2
1
0
OUTPUT VOLTAGE
：
V
OUT
[V]
5
4
3
2
1
0
0
2
4
6
8
10
12
14
SUPPLY VOLTAGE
：
Vc c [V]
16
0
2
4
6
8
10
12
14
SUPPLY VOLTAGE
：
Vc c [V]
16
Fig.1 Circuit Current
6
0.6
Fig.2 Input Stability(Io=0mA)
80
RIPPLE REJECTION
：
R.R. [dB]
70
60
50
40
30
20
10
0
10
.3 Input Stability
(Io = 1.5 A)
[BA50JC5T]
DROPOUT VO LTAGE
：
ΔVd
[mV]
[BA50JC5T]
OUTPUT VOLTAGE
：
V
OUT
[ V]
5
4
3
2
1
0
0
0.5
1
1.5
2
OUTPUT CURRENT
：
I
OUT
[A]
2.5
[BA50JC5T]
0.5
0.4
0.3
0.2
0.1
0
0
500
1000
OUTPUT CURRENT
：
I
OUT
[ mA]
15 00
100
1000
10000
100000
1000000
FREQUENCY
：
f [Hz]
Fig.4 Load Stability
10
9
OUTPUT VOLTAGE
：
V
OUT
[ V]
8
7
6
5
4
3
2
1
0
-40
-20
0
20
40
60
80
TEMPERATURE
：
Ta [℃]
100
Fig.5 I/O Voltage Difference
1
90
CIRCUI T
Ｃ
URRENT
：
Icc [mA]
Fig.6 Ripple Rejection
[BA50JC5T]
CIRCUI T
Ｃ
URRENT
：
Icc [mA]
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-40
-20
[BA50JC5T]
80
70
60
50
40
30
20
10
0
[BA50JC5T]
0
20
40
60
80
TEMPERATURE
：
Ta [℃]
100
0
500
1 000
OUTPUT CURRENT
：
I
OUT
[ A]
150 0
Fig.7 Output Voltage vs
Temperature
6
OUTPUT VOLTAGE
：
V
OUT
[V]
5
CO NTRO L
Ｃ
URRENT
：
I
CTL
[μA]
0.6
Fig.8 Circuit Current
Temperature
Fig.9 Circuit Current Classified
by Load
8
[BA50JC5T]
O UTPUT VOLTAG E
：
V
OUT
[V]
0.5
0.4
0.3
0.2
0.1
0
7
6
5
4
3
2
1
0
100
[BA50JC5T]
[BA50JC5T]
4
3
2
1
0
0
2
4
6
8
CONTROL VOLTAGE
：
V
CTL
[V]
10
0
2
4
6
8 10 12 14 16
CONTROL VOLTAG E
：
V
CTL
[V]
18
120
140
160
1 80
TEMPERATURE
：
Ta [℃ ]
200
Fig.10 CTL Voltage vs
Output Voltage
Fig.11 CTL Voltage vs
CTL Current
Fig.12 Thermal Shutdown Circuit
(Io = 5 mA)
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© 2009 ROHM Co., Ltd. All rights reserved.
3/9
2009.04 - Rev.A
BA□□JC5 Series,BA00JC5W Series
Block Diagrams / Standard Example Application Circuits
[BA□□JC5T]
Technical Note
Vref
TOP VW
Driver
Pin No.
1
2
3
Pin name
Vcc
GND
OUT
Function
Power supply voltage input
GND
Voltage output
TSD
1
Vcc
2
OCP
3
Vcc
GND
OUT
1 2 3
0.33μF
22μF
PIN
Vcc (1 Pin）
OUT (3 Pin)
External capacit setting range
Approximately 0.33
F
22
F
to 1000
F
TO220FP-3
Fig.13
[BA00JC5WT]
Vcc
Vref
Driver
TOP VIEW
Pin No.
1
2
3
4
5
Pin name
CTL
Vcc
GND
OUT
C
Function
Output voltage on/off control
Power supply voltage input
GND
Voltage output
ADJ pin
TSD
OCP
1
CTL
2
Vcc
3
GND
4
OUT
R2
5
C
R1
PIN
Vcc (2 Pin)
OUT (4 Pin)
12345
12345
External capacit setting range
Approximately 0.33
F
22
F
to 1000
F
Vcc
0.33μF
22μF
TO220FP-5 TO220FP-5 (V5)
Fig.14
Input / Output Equivalent Circuits
Vcc
Vcc
* For the BA00JC5WT, connect R1 and R2
externally between the ADJ and GND pins
and between the OUT and ADJ pins.
OUT
CTL
27kΩ
2kΩ
31kΩ
R2
R1
Equation: VOUT = Vc
(R1 + R2) / R1
(Vc = 1.25 V (Typ.))
The recommended R1 value is approximately
30 k to 150 k.
Fig.15
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4/9
2009.04 - Rev.A
BA□□JC5 Series,BA00JC5W Series
Thermal
Derating Curve
TO220FP-3/TO220FP-5/TO220FP-5 (V5）
25
POWER DISSIPATION：Pd [W]
(1)20.0
20
15
10
5
0
(1) When using an infinite heat sink.
j-c
= 6.25 (°C/W)
(2) During IC without heat sink operation.
j-a
= 62.5 (°C/W)
Technical Note
(2)2.0
0
25
50
75
100
125
150
AMBIENT TEMPERATURE：Ta [
°C
]
Fig.17
The characteristics of the IC are greatly influenced by the operating temperature. If the temperature exceeds the maximum
junction temperature T
jmax
, deterioration or damage may occur. Implement proper thermal designs to ensure that power
dissipation is within the permissible range in order to prevent instantaneous damage resulting from heat and maintain the
reliability of the IC for long-term operation.
The following method is used to calculate the power consumption Pc (W):
Pc = (Vcc – Vo)
Io + Vcc
Icca
Power dissipation Pd
≥
Pc
The load current Io is calculated:
Io
≤
Pd
−
Vcc
Icca
Vcc
−
Vo
Vcc
Vo
I
O
Icca
: Input voltage
: Output current
: Load current
: Circuit current
Calculation Example:
Vcc = 6.0V and Vo = 5.0V at Ta = 85℃
1.040
−
6.0
Icca
6.0
−
5.0
Io
≤
860mA (Icca
30mA)
Refer to the above and implement proper thermal designs so that the IC will not be used under excessive power dissipation
conditions under the entire operating temperature range.
The power consumption Pc of the IC in the event of shorting (i.e. the Vo and GND pins are shorted) can be obtained from the
following equation: Pc = Vcc
(Icca + Ishort) (Ishort: short current)
ja
= 62.5°C/W
−16.0mW/°C
25°C = 2000mW
85°C = 1040mW
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5/9
2009.04 - Rev.A
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