ROHM BAΟΟST, BAΟΟSFP Technical data
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BAΟΟST / BAΟΟSFP series
Regulator ICs
Regulator, low drop-out type with ON/OFF
switch
ΟΟ
ΟΟ
BA
The BAΟΟST and BAΟΟSFP series are variable, fixed output low drop-out type voltage regulators with an ON/OFF
switch.
These regulators are used to provide a stabilized output voltage from a fluctuating DC input voltage.
Fixed output voltages are 3.3V, 5V, 6V(SFP), 7V, 8V, 9V, 10V(ST), 12V(ST). The maximum current capacity is 1 A for
each of the above voltages.
!Application
Constant voltage power supply
ST / BA
ΟΟΟΟ
ΟΟ
ΟΟ
SFP series
ΟΟΟΟ
!!!!
Features
1) Built-in overvoltage protection circuit, overcurrent protection circuit and thermal shutdown circuit
2) TO220FP-5, TO252-5 standard packages can be accomodated in wide application.
3) 0µA (design value) circuit current when switch is off
4) Richly diverse lineup.
5) Low minimum I/O voltage differential.
!!!!
Product codes
Output voltage (V) Product No. Output voltage (V) Product No.
Variable
3.3 BA033ST / SFP
5.0 BA05ST / SFP
6.0 BA06SFP
7.0 BA07ST / SFP
!!!!Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit
Power supply voltage V
Power dissipation Pd
Operating temperature Topr -40~+85 ˚C
Storage temperature Tstg -55~+150 ˚C
Peak applied voltage Vsurge 50
*1 Reduced by 16mW for each increase in Ta of 1˚C over 25˚C.
*2 Reduced by 8mW for each increase in Ta of 1˚C over 25˚C.
*3 Voltage application time : 200 msec. or less
BA00AST / ASFP 8.0 BA08ST / SFP
9.0 BA09ST / SFP
10.0 BA10ST
12.0 BA12ST
CC
TO220FP-5
TO252-5
35 V
*1
2000
*2
1000
*3
mW
V
Regulator ICs
!!!!Block diagram
V
CTL
GND
BAΟΟST / BAΟΟSFP series
CC
2
1
3
REFERENCE
VOLTAGE
Variable output type (BA00AST / ASFP)
−
+
OUT
4
5
+
C
CC
V
CTL
GND
2
1
3
REFERENCE
VOLTAGE
!!!!Pin descriptions
Pin No. Function
1 CTL Output ON/OFF
2V
3 GND
4 OUT
5
Pin name
CC
C
N.C.
Power supply input
Ground
Output
Reference power supply pin for setting voltage with
BA00AST/ASFP.
the
In the BAOOST/SFP Series, these are NC pins,
except for the
BA00AST/ASFP.
Fixed output type
−
+
OUT
4
+
BAΟΟST / BAΟΟSFP series
Regulator ICs
!!!!Recommended operating conditions
BA00AST / ASFP BA08ST / SFP
Parameter Symbol Min.
V
Input voltage
Output current
CC
I
O
4
-1
BA033ST / SFP BA09ST / SFP
Parameter Symbol Min.
Input voltage
Output current
V
CC
4.3
I
O
-
BA05ST / SFP BA10ST
Parameter Symbol Min.
Input voltage
Output current
V
6
CC
-
I
O
BA06SFP BA12ST
Parameter Symbol Min.
Input voltage
Output current
V
CC
725
I
O
-
Max.
25
Max.
25 V
1
Max.
25
1
Max.
1
Unit
V
A
Unit
A
Unit
V
A
Unit
V
A
Parameter Symbol Min. Max.
Input voltage
Output current
Parameter Symbol Min.
Input voltage
Output current
Parameter Symbol Min. Max. Unit
Input voltage
Output current
Parameter Symbol Min.
Input voltage
Output current
Unit
CC
V
V
V
925
I
O
-1
10
CC
-
I
O
11
CC
-1A
I
O
Max.
25
1
25
V
A
Unit
V
A
V
Max. Unit
13
-
25 V
1A
CC
V
I
O
BA07ST / SFP
Parameter Symbol Min. Max.
V
Input voltage
Output current
!!!!
Electrical characteristics
CC
I
O
8
-
Unit
25
V
1A
BA00AST / ASFP (unless otherwise noted, Ta=25°C, Vcc=10V, Io=500mA)
Parameter Symbol Min. Typ. Max. Unit Conditions
Reference voltage
Power save current
Output voltage
Input stability
Ripple rejection ratio
Load regulation
Temperature coefficient of output voltage
Minimum I/O voltage differential
Bias current
Peak output current
Output short-circuit current
ON mode voltage
OFF mode voltage
Input high level current
V
ref
1.200 1.225 1.250 V
Ist - 0 10 µA
O
Reg.I - 20 100 mV Fig.1
R.R. 45 55 - dB
Reg.L - 50 150 mV I
CVO - ±0.01 - % / ˚CI
T
V
I
b
O-P
I
OS - 0.4 - A VCC=25V
I
Vth1 2.0 - - V Output Active mode, I
Vth2 - - 0.8 V Output OFF mode, I
IN 100 200 300 µA CTL=5V, IO=0mA Fig.6
I
- 5.0 - V
d
- 0.3 0.5 V Fig.3
- 2.5 5.0 mA IO=0mA Fig.4
1.0 1.5 - A Tj=25˚C Fig.1
Measurement
CC=6→25V
V
e
IN
=1Vrms, f=120Hz, IO=100mA Fig.2
=5mA→1A Fig.1
O
O
=5mA, Tj=0~125˚C Fig.1
CC=0.95V
V
O
O=0mA Fig.6
O=0mA Fig.6
circuit
Fig.1
Fig.4OFF mode
Fig.1V
Fig.5
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