BA3259HFP_09 Datasheet, PDF (1/10 Pages) Rohm – Dual-output Secondary Fixed/Variable Output LDO Regulators for Local Power Supplies

Secondary LDO Regulators for Local Power Supplies
Dual-output Secondary
Fixed/Variable Output LDO Regulators
for Local Power Supplies
BA3259HFP,BA30E00WHFP
No.09026EAT02
Description
The BA3259HFP and BA30E00WHFP are 2-output, low-saturation regulators. These units have both a 3.3 V fixed output as well
as a variable output with a voltage accuracy of ±2%, and incorporate an overcurrent protection circuit to prevent IC destruction due
to output shorting along with a TSD (Thermal Shut Down) circuit to protect the IC from thermal destruction caused by overloading.
Features
1) Output voltage accuracy: ± 2%.
2) Reference voltage accuracy: ± 2%
3) Output current capacity: 1 A (BA3259HFP), 0.6 A (BA30E00WHFP)
4) Ceramic capacitor can be used to prevent output oscillation (BA3259HFP)
6) Low dissipation with two voltage input supported (BA30E00WHFP)
7) Built-in thermal shutdown circuit
8) Built-in overcurrent protection circuit
Applications
Available to all commercial devices, such as FPD, TV, and PC sets besides DSP power supplies for DVD and CD sets.
Product Lineup
Part Number
BA3259HFP
BA30E00WHFP
Output voltage Vo1
3.3 V
3.3 V
Output voltage Vo2
0.8 V to 3.3 V
0.8 V to 3.3 V
Output Current Io1
1 A max
0.6 A max
Output Current Io2
1 A max
0.6 A max
Package
HRP5
HRP7
Absolute Maximum Ratings
BA3259HFP
BA30E00WHFP
Parameter
Symbol
Limit
Units
Parameter
Applied voltage
Vcc
15 ^*1
V
Applied voltage
Power dissipation
Pd
2300 ^*2
mW
Power dissipation
Operating temperature
range
Topr
0 to 85
°C
Operating temperature
range
Ambient storage
temperature range
Tstg −55 to 150 °C
Ambient storage
temperature range
Maximum junction
temperature
Tjmax
150
°C
Maximum junction
temperature
*1 Must not exceed Pd.
*2 Derated at 18.4 mW/°C at Ta>25°C when mounted on a glass epoxy board (70 mm  70 mm  1.6 mm).
Symbol
Vcc
Pd
Limit
18 ^*1
2300 ^*2
Units
V
mW
Topr −25 to 105 °C
Tstg −55 to 150 °C
Tjmax
150
°C
Recommended Operating Conditions
BA3259HFP
Parameter
Symbol Min. Typ. Max. Unit
Input power supply
voltage
Vcc 4.75 − 14.0 V
3.3 V output current
Io1
− − 1A
Variable output current Io2
− − 1A
BA30E00WHFP
Parameter
Input power supply
voltage 1
Input power supply
voltage 2
3.3 V output current
Variable output current
Symbol
Vcc1
Vcc2
Io1
Io2
Min. Typ. Max. Unit
4.1 − 16.0 V
2.8 − Vcc1 V
− − 0.6 A
− − 0.6 A
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/8
2009.04 - Rev.A