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www.rohm.com
2010.04 - Rev.C
○
c
2010 ROHM Co., Ltd. All rights reserved.
Single-chip Type with Built-in FET Switching Regulator Series
Output 1.5A or Less High Efficiency
Step-down Switching Regulator
with Built-in Power MOSFET
BD9152MUV
●Description
ROHM’s high efficiency dual step-down switching regulator BD9152MUV is a power supply designed to produce a low
voltage including 3.3,0.8 volts from 5.5/4.5 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 (Pch/Nch FET)
and SLLM
TM
(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 Icc=0μA(Typ.)
7) Employs small surface mount package : VQFN020V4040
●Application
Power supply for LSI including DSP, Micro computer and ASIC
●Absolute Maximum Rating (Ta=25℃)
Paramete
S
mbol Limit Unit
Vcc Volta
e VCC -0.3～+7 *
1
V
EN Voltage
V
EN1
-0.3～+7 V
V
EN2
-0.3～+7 V
SW Voltage
V
SW1
-0.3～+7 V
V
SW2
-0.3～+7 V
Power Dissipation
Pd1 0.34*
2
W
Pd2 0.70 *
3
W
Pd3 1.21 *
4
W
Pd4 3.56*
5
W
Operating Temperature Range Topr -40～+85 ℃
Storage Temperature Range Tstg -55～+150 ℃
Maximum Junction Temperature Tjmax +150 ℃
*1 Pd should not be exceeded.
*2 IC only
*3 1-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm2
*4 4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm2 , in each layers
*5 4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 5505mm2, in each layers
●Operating Conditions (Ta=-40～+105℃)
Parameter Symbol
Limit
Unit
Min. T
p. Max.
Vcc Volta
e VCC 4.5 5.0 5.5 V
EN Voltage
V
EN1 0 - 5.5 V
VEN2 0 - 5.5 V
Output Voltage range VOUT2 0.8 - 2.5 V
SW Average Output Current
ISW1 - - 1.5*
6
A
ISW2 - - 1.5*
6
A
*6 Pd and ASO should not be exceeded.
No.10027ECT14
