Single-chip built-in FET type Switching Regulator Series
Output 1.5A or Less High Efficiency
Step-down Switching Regulators
with Built-in Power MOSFET
BD9102FVM, BD9104FVM, BD9106FVM
No.09027EAT34
●Description
ROHM’s high efficiency step-down switching regulator (BD9102FVM, BD9104FVM, BD9106FVM) is a power supply
designed to produce a low voltage including 1.24 volts from 5 volts power supply line. Offers high efficiency with our
original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster
transient response to sudden change in load.
●Features
1) Offers fast transient response with current mode PWM control system.
2) Offers highly efficiency for all load range with synchronous rectifier (Nch/Pch FET)
and SLLMTM (Simple Light Load Mode)
3) Incorporates soft-start function.
4) Incorporates thermal protection and ULVO functions.
5) Incorporates short-current protection circuit with time delay function.
6) Incorporates shutdown function
7) Employs small surface mount package MSOP8
●Use
Power supply for HDD, power supply for portable electronic devices like PDA, and power supply for LSI including CPU and
ASIC
●Lineup
Parameter
BD9102FVM
4.0~5.5V
1.24V±2%
0.8A Max.
2.7V Typ.
built-in
BD9104FVM
4.5~5.5V
3.30V±2%
0.9A Max.
4.1V Typ.
built-in
BD9106FVM
4.0~5.5V
Adjustable(1.0~2.5V)
0.8A Max.
3.4V Typ.
Vcc voltage
Output voltage
Output current
UVLO Threshold voltage
Short-current protection with time delay function
Soft start function
built-in
built-in
built-in
built-in
Standby current
Operating temperature range
Package
0μA Typ.
-25~+85℃
MSOP8
0μA Typ.
-25~+85℃
MSOP8
0μA Typ.
-25~+85℃
MSOP8
●Absolute Maximum Rating (Ta=25℃)
Parameter
Symbol
VCC
PVCC
EN
SW,ITH
Pd1
Pd2
Topr
Tstg
Tjmax
Limits
-0.3~+7 *1
-0.3~+7 *1
-0.3~+7
-0.3~+7
387.5*2
Unit
V
V
V
V
mW
mW
℃
℃
℃
VCC voltage
PVCC voltage
EN voltage
SW,ITH voltage
Power dissipation 1
Power dissipation 2
Operating temperature range
Storage temperature range
Maximum junction temperature
587.4*3
-25~+85
-55~+150
+150
*1
*2
*3
Pd should not be exceeded.
Derating in done 3.1mW/℃ for temperatures above Ta=25℃.
Derating in done 4.7mW/℃ for temperatures above Ta=25℃,Mounted on 70mm×70mm×1.6mm Glass Epoxy PCB
www.rohm.com
2009.05 - Rev.A
1/17
© 2009 ROHM Co., Ltd. All rights reserved.