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Número de pieza BH31FB1WG
Descripción Standard CMOS LDO Regulators
Fabricantes ROHM Semiconductor 
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CMOS LDO Regulator Series for Portable Equipments
Standard CMOS LDO Regulators
BH ŜŜ FB1WG series, BHŜŜ FB1WHFV series,
BH ŜŜ LB1WG series, BHŜŜ LB1WHFV series
Large Current 300mA
CMOS LDO Regulators
BH ŜŜ MA3WHFV Series
No.10020ECT02
Description
The BHŜŜFB1W, BHŜŜLB1W and BHŜŜMA3W series are low dropout CMOS regulators with 150 mA and 300 mA
output that have ±1% high accuracy output voltage.
The BHŜŜFB1W series combines 40µA low current consumption and a 70 dB high ripple rejection ratio by utilizing output
level CMOS technology. The components can be easily mounted into the small standard SSOP5 and the ultra-small
HVSOF5/HVSOF6 packages.
Features
1) High accuracy output voltage: ±1%
2) High ripple rejection ratio: 70 dB (BHŜŜFB1WHFV/WG, BHŜŜLB1WHFV/WG)
3) Low dropout voltage: 60 mV (when current is 100 mA) (BHŜŜMA3WHFV)
4) Stable with ceramic output capacitors
5) Low Bias current : 40µA (IO = 50 mA) (BHŜŜFB1WHFV/WG)
6) Output voltage ON/OFF control
7) Built-in over-current protection and thermal shutdown circuits
8) Ultra-small power package: HVSOF5 (BHŜŜFB1WHFV, BHŜŜLB1WHFV)
9) Ultra-small power package: HVSOF6 (BHŜŜMA3WHFV)
Applications
Battery-driven portable devices and etc.
Line up
150mA BHŜŜFB1W and BHŜŜLB1W Series
Part Number
1.5 1.8 1.85 2.5 2.8 2.9 3.0 3.1 3.3 Package
BHŜŜFB1WG
---
SSOP5
BHŜŜFB1WHFV - - -
HVSOF5
BHŜŜLB1WG
- - - - - - - SSOP5
BHŜŜLB1WHFV
- - - - - - HVSOF5
300mA BHŜŜMA3WHFV series
Part Number
1.5 1.8 2.5 2.8 2.9 3.0 3.1 3.3
Package
BHŜŜMA3WHFV
HVSOF6
Part Number: B H ŜŜ F B 1 W Ŝ , B H ŜŜ L B 1 W Ŝ
a ba b
Part Number: B H ŜŜ M A 3 W Ŝ
ab
Symbol
Details
Output Voltage Designation
ŜŜ Output Voltage (V) ŜŜ Output Voltage (V)
15 1.5V (Typ.) 29 2.9V (Typ.)
a 18 1.8V (Typ.) 30 3.0V (Typ.)
1J 1.85V (Typ.) 31
3.1V (Typ.)
25 2.5V (Typ.) 33 3.3V (Typ.)
28 2.8V (Typ.)
b Package: G : SSOP5 HFV : HVSOF5
Symbol
Details
Output Voltage Designation
ŜŜ Output Voltage (V) ŜŜ Output Voltage (V)
15 1.5V (Typ.) 29
2.9V (Typ.)
a
18 1.8V (Typ.) 30
3.0V (Typ.)
25 2.5V (Typ.) 31
3.1V (Typ.)
28 2.8V (Typ.) 33
3.3V (Typ.)
b Package: HFV : HVSOF6
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/8
2010.07 - Rev. C

1 page




BH31FB1WG pdf
BH FB1WG series, BH FB1WHFV series,
BH LB1WG series, BH LB1WHFV series, BH MA3WHFV series
Block diagrams
Technical Note
Power supply input
Ground
Output voltage ON/OFF control
(High: ON, Low: OFF)
NO CONNECT
Voltage output
Output voltage ON/OFF control
(High: ON, Low: OFF)
Ground
Power supply input
Voltage output
NO CONNECT
Terminal No. Terminal Name
Function
Power supply input
Voltage output
Voltage output
Noise reducing capacitor
ground terminal
Ground
Output voltage ON/OFF control
(High: ON, Low: OFF)
Power dissipation Pd
1. Power dissipation
Power dissipation calculation include estimates of power dissipation characteristics and internal IC power consumption
and should be treated as guidelines. In the event that the IC is used in an environment where this power dissipation is
exceeded, the attendant rise in the junction temperature will trigger the thermal shutdown circuit, reducing the current
capacity and otherwise degrading the IC's design performance. Allow for sufficient margins so that this power dissipation
is not exceeded during IC operation.
Calculating the maximum internal IC power consumption (PMAX)
2. Power dissipation characteristics (Pd)
Input voltage
Output voltage
Output current
Board: 70 mm X 70 mm X 1.6 mm
Material: Glass epoxy PCB
Board: 70 mm X 70 mm X 1.6 mm
Material: Glass epoxy PCB
Board: 70 mm X 70 mm X 1.6 mm
Material: Glass epoxy PCB
°
Fig. 26: HVSOF6
Power Dissipation/
Power Dissipation Reduction (Example)
°
Fig. 27: HVSOF5
Power Dissipation/
Power Dissipation Reduction (Example)
°
Fig. 28: SSOP5
Power Dissipation/
Power Dissipation Reduction (Example)
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/8
2010.07 - Rev. C

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