Rainbow Electronics BA33C25FP-HFP User Manual
2-output LDO series regulator
BA33C25FP/HFP
Description
BA33C25FP/HFP is a 2-output LDO series regulator IC.
Dimension (Unit : mm)
BA33C25FP
Output current is 1A at maximum and output voltage
accuracy is +/-2%. This IC incorporates over-current
protection and thermal protection circuits.
Features
1) 3.3V/1A, 2.5V/1A
2) Output voltage accuracy: +/-2%
3) PNP output and LDO voltage type
4) Built-in output current limit circuit protects the IC
BA33C25HFP
from destruction by short
5) Built-in temperature protection circuit protects the IC
from thermal destruction by overload state
6) TO252-5 package, HRP-5 package
Applications
DVD-ROM, DVD-RW, HDD
Absolute Maximum Ratings (Ta=25˚C)
Parameter Symbol
Applied voltage
Power dissipation
Operating temperature range
Storage temperature range
∗1 Derating : 18.4mW/˚C for operation above Ta ≥ 25˚C
PCB (70mmx70mm, t=1.6mm) glass epoxy mounting. (Thermal via on the board.)
(Board surface copper foil area: 10.5mmX10.5mm)
(2 layer board (Back copper foil area: 15mmX15mm)
Recommended Operating Conditions (Ta=25˚C)
Parameter Min. Max. UnitTyp.Symbol
Input supply voltage
3.3V output current
2.5V output voltage
VCC
Pd
Topr
Tstg
VCC
Io1
Io2
4.1 16.0
Limits
2300
-
40
-
55
- -
- -
18
~
~
-
+105
+150
1
1
+0.2
−0.1
2-C0.5
0.8
1.27
TO252-5
0.73±0.1
HRP-5
2.3±0.2
0.5±0.1
9.5±0.5
1.5
2.5
0.5±0.1
1.0±0.2
1.905±0.1
(7.49)
10.54±0.13
0.835±0.2
1.523±0.15
+ 5.5°
4.5°
− 4.5°
+ 0.1
0.27
− 0.05
SSD 0.08
1.017±0.28.0±0.13
1.2575
0.08±0.05
6.5±0.2
5.1
1.5±0.2
5.5±0.2
123 54
0.5
9.39±0.125
8.82±0.1
(5.59)
1 2 3 4 5
1.72
Unit
V
∗1
mW
˚C
˚C
V
A
A
Electrical characteristics (Unless otherwise noted; Ta=25˚C, Vcc=5V)
Parameter Symbol Min. Typ. Max. Unit Conditions
Bias current
<3.3V output>
Output voltage 1
Min. I/O voltage difference 1
Output current capacity 1
Ripple rejection 1
Input stability 1
Load stability 1
Output voltage temperature
coefficient 1
Output short current 1
<2.5V output>
Output voltage 2
Output current capacity 2
Ripple rejection 2
Input stability 2
Load stability 2
Output voltage temperature
coefficient 2
Output short current 2
∗This product is not designed for protection against radioactive rays.
∗2 Design guaranteed (All total inspection is not performed.)
∗2
∗2
Ib
Vo1
∆Vd1
Io1
R.R. 1
Reg.I1
Reg.L1
Tcvo1
IOS1
Vo2
Io2
R.R. 2
Reg.I2
Reg.L2
Tcvo2
IOS2
-
3.234
-
1.0
50
-
-
-
-
2.450
1.0
50
-
-
-
-
0.8
3.3
0.25
-
58
5
30
±0.01
300
2.5
-
58
5
30
±0.01
270
1.5
3.366
0.50
30
75
2.550
30
75
mA
Io=0mA, Io2=0mA
V
Io1=500mA
V
Io1=500mA, Vcc=3.135V
dB
mV
mV
% /
mA
dB
mV
mV
% /
mA
A
f=120Hz, ein=1Vrms, Io1=200mA
Vcc=4.1 → 16V, Io1=500mA
Io1=0mA → 1A
Io1=5mA, Tj=0~125˚C
˚C
Vcc=16V
Io2=500mA
V
A
f=120Hz, ein=1Vrms, Io2=200mA
Vcc=4.1 → 16V, Io2=500mA
Io2=0mA → 1A
Io1=5mA, Tj=0~125˚C
˚C
Vcc=16V
-
-
-
-
-
-
-
-
Block Diagram
BA33C25FP/HFP
Reference
Voltage
Thermal
Shut Down
Vcc Vo2GND(FIN) Vo1N.C.
Vcc Vcc
Current
Limit
Vcc Vcc
Current
Limit
Sat.
Prevention
Sat.
Prevention
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