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BD9151MUV

更新时间： 2024-02-25 02:42:50
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罗姆 - ROHM 稳压器开关
页数 文件大小 规格书
17页 528K
描述
Output 1.5A or Less High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

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BD9151MUV 数据手册

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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  
BD9151MUV  
No.09027EAT11  
●Description  
ROHM’s high efficiency dual step-down switching regulator BD9151MUV is a power supply designed to produce a low  
voltage including 1.8 volts or 1.2 volts from 2.8 volts to 5.0 volts power supply line. Reset circuits of input power supply  
voltage and external Pch MOSFET gate controller are incorporated. 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 SLLMTM (Simple Light Load Mode)  
3) Incorporates soft-start function.  
4) Incorporates Thermal / ULVO protection functions.  
5) Incorporates thermal protection and short-current protection circuit with timer latch function. .  
6) Incorporates shutdown function Icc=0µA(Typ.)  
7) Incorporates reset function  
8) Incorporates Pch MOSFET gate controller  
9) Employs small surface mount package : VQFN020V4040  
●Applications  
Power supply for LSI including DSP, Micro computer and ASIC  
●Absolute maximum ratings (Ta=25℃)  
Parameter  
Symbol  
AVCC  
PVcc  
VEN  
Limit  
-0.3～+7*1  
-0.3～+7*1  
-0.3～+7  
-0.3～+7  
-0.3～+7  
0.34*2  
Unit  
V
Vcc Voltage  
EN Voltage  
SW Voltage  
V
V
VSW1  
VSW2  
Pd1  
V
V
W
W
W
W
℃
℃
℃
Pd2  
0.70*3  
Power Dissipation  
Pd3  
2.21*4  
3.56*5  
Pd4  
Operating Temperature Range  
Storage Temperature Range  
Maximum Junction Temperature  
Topr  
-40～+85  
-55～+150  
+150  
Tstg  
Tjmax  
*1  
*2  
*3  
*4  
*5  
Pd, ASO and Tj=150℃ should not be exceeded.  
IC only  
1-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm2  
4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm2 , 2-3 layers 5505 mm2  
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～+85℃)  
Parameter  
Vcc Voltage  
Symbol  
AVCC、PVCC  
VEN  
Min.  
Typ.  
Max.  
5.5  
Unit  
V
2.8  
3.3  
EN Voltage  
0
-
-
-
-
5.5  
V
ISW1  
0.4*6  
0.8*6  
A
SW Average Output Current  
ISW2  
-
A
*6 Pd and ASO should not be exceeded.  
www.rohm.com  
2009.08 - Rev.A  
1/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
1234567...17

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