BD9141MUV Datasheet, PDF (1/19 Pages) Rohm – Output 2A or More High-efficiency Step-down Switching Regulator with Built-in Power MOSFET

Single-chip Type with Built-in FET Switching Regulator Series
Output 2A or More
High-efficiency Step-down
Switching Regulator
with Built-in Power MOSFET
BD9141MUV
No.09027EAT37
●Description
ROHM’s high efficiency step-down switching regulator BD9141MUV is a power supply designed to produce a low voltage
including 5.0/3.3 volts from 2 lithium cell 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 SLLM (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 : VQFN020V4040
●Applications
Power supply for LSI including DSP, Micro computer and ASIC
●Line up matrix
Parameter
VCC Voltage
PVCC Voltage
Symbol
VCC
PVCC
Limits
Unit
BD9141MUV
-0.3～+15 ^＊1
V
-0.3～+15 ^＊1
V
EN Voltage
VEN
-0.3～+15
V
SW,ITH Voltage,VREG
Power Dissipation 1
Power Dissipation 2
Power Dissipation 3
Power Dissipation 4
VSW,VITH, VREG
-0.3～+15
V
Pd1
0.34^＊2
W
Pd2
0.70^＊3
W
Pd3
2.21 *⁴
W
Pd4
3.56 *⁵
W
Operating temperature range
Topr
-40～+105
℃
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 board 74.2mm×74.2mm×1.6mm Glass-epoxy PCB (Copper foil area : 10.29mm²)
＊４ 4 layers, mounted on a board 74.2mm×74.2mm×1.6mm Glass-epoxy PCB
(1^st ,4^th Copper foil area : 10.29mm² 2^nd ,3^rd Copper foil area : 5505mm²) ,.
＊５ 4 layers, mounted on a board 74.2mm×74.2mm×1.6mm Glass-epoxy PCB (Copper foil area : 5505mm²) , copper foil in each layers.
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/18
2009.06 - Rev.A