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BD9122GUL_09 PDF预览

BD9122GUL_09

更新时间: 2024-11-04 06:41:55
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罗姆 - ROHM 稳压器开关
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14页 426K
描述
Output 0.5A or Less High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

BD9122GUL_09 数据手册

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Single-chip Type with built-in FET Switching Regulator Series  
Output 0.5A or Less High Efficiency  
Step-down Switching Regulator  
with Built-in Power MOSFET  
BD9122GUL  
No.09027EAT31  
Description  
ROHM’s high efficiency step-down switching regulator (BD9122GUL) is a power supply designed to produce a low voltage  
including 1 volts from 5/3.3 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 WL-CSP : VCSP50L2  
Use  
Power supply for LSI including DSP, Micro computer and ASIC  
Absolute Maximum Ratings (Ta=25)  
Parameter  
Symbol  
VCC  
PVCC  
VEN  
VSW,VITH  
Pd  
Topr  
Limits  
-0.3+7  
-0.3+7  
Unit  
V
V
V
V
mW  
1
1
VCC Voltage  
PVCC Voltage  
EN Voltage  
-0.3+7  
-0.3+7  
SW,ITH Voltage  
Power Dissipation  
Operating temperature range  
Storage temperature range  
Maximum junction temperature  
2
660*  
-25+85  
-55+150  
Tstg  
Tjmax  
+150  
1  
Pd should not be exceeded.  
2  
Derating in done 5.28mW/for temperatures above Ta=25, Mounted on 50mm×58mm×1.6mm Glass Epoxy PCB.  
Operating Conditions (Ta=25)  
Limits  
Typ.  
3.3  
3.3  
Parameter  
Symbol  
Unit  
Min.  
2.5*4  
2.5*4  
0
Max.  
5.5  
5.5  
VCC  
0.3  
2.0  
*3  
VCC Voltage  
VCC  
PVCC  
V
V
V
A
V
*3  
PVCC Voltage  
EN Voltage  
EN  
-
-
-
SW average output  
Output voltage Setting Range  
Isw *3  
VOUT  
-
1.0  
3  
Pd should not be exceeded.  
4  
In case set output voltage 1.8V or more, VccMin = 2.7V.  
www.rohm.com  
2009.05 - Rev.A  
1/13  
© 2009 ROHM Co., Ltd. All rights reserved.  

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