Description
Features
Applications
HDD/DVD
Dimension (Unit : mm)
BA3257FP
BA3257HFP
TO252-5
HRP-5
6.5–0.2
1 2 3 54
0
.
8
0.5 1.27 0.5–0.1
1
.
5
2
.
5
9
.
5
–
0
.
5
2.3–0.2
0.5–0.15.1
+0.2
-0.1
2-C0.5
5
.
5
–
0
.
2
1.0–0.2
1
.
5
–
0
.
2
9.39–0.125
0.73–0.1
0.27
1.905–0.1
0
.
8
3
5
–
0
.
2
1
.
5
2
3
–
0
.
1
5
1
0
.
5
4
–
0
.
1
3
0
.
0
8
–
0
.
0
5
1.2575
1 2 3 4 5
1
.
0
1
7
–
0
.
2
8
.
0
–
0
.
1
3
(
7
.
4
9
)
(5.59)
8.82–0.1
S
S
D 0.08
1.72
+ 0.1
- 0.05
4.5
+ 5.5
- 4.5
BA3257FP/HFP
Dual Low Drop Out Regulator
Absolute Maximum Ratings (Ta=25˚C)
Power supply voltage VCC -4.75 14.0 V
Recommended Operating Conditions (Ta=25˚C)
Parameter Min. Max. UnitTyp.Symbol
BA3257FP/HFP is a power supply IC in which
2-output series regulators are incorporated into
a power package (TO252-5/HRP-5). 2-outputs
are 3.3V and a variable output.(Above 1.5V can
be set.) Each current is 1A. Ceramic capacitor
is available for output.
1) 3.3V/1A and Variable(1.25V standard)/1A
2) Output ceramic capacitor available
3) Output voltage accuracy :+/-2%
4) Built-in over-current and thermal protection circuit
5) TO252-5 package and HRP-5 package
*1 Derating : 18.4mW/˚C for operation above Ta=25˚C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting.
*2 Derating : 10.4mW/˚C for operation above Ta=25˚C PCB (70mmx70mm, t=1.6mm) glass epoxy mounting.
Power supply voltage
Power
dissipation
Operating temperature range
Storage temperature range
Parameter Symbol Limits Unit
VCC
Pd
HRP-5
TO252-5
Topr
Tstg
+85
+150
0
-55
~
~
mW
˚C
˚C
15
2300
V
*1
1300
*2
Ceramic Capacitor Available