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BD9845FV_11 PDF预览

BD9845FV_11

更新时间: 2024-11-13 08:51:55
品牌 Logo 应用领域
罗姆 - ROHM 稳压器开关控制器
页数 文件大小 规格书
16页 533K
描述
Single/Dual-output High-frequency Step-down Switching Regulator(Controller type)

BD9845FV_11 数据手册

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Large Current External FET Controller Type Switching Regulators  
Single/Dual-output  
High-frequency Step-down  
Switching Regulator(Controller type)  
No.11028EDT08  
BD9845FV  
Overview  
BD9845FV is an IC containing a circuit of switching regulator controller by pulse width modulation system.  
This circuit can be used for step-down DC/DC converter operation.  
In addition, the package is designed compact, and is optimum for compact power supply for many kinds of equipment.  
Feature  
1) High voltage resistance input (Vcc=35V)  
2) FET driver circuit is contained (step-down circuit 1 output).  
3) Error amplifier reference voltage (1.0V1%) and REG output circuit (2.5V) are contained.  
4) Overcurrent detection circuit is contained.  
5) Soft start and pause period can be adjusted.  
6) Three modes of standby, master, and slave can be switched. (iccs = 0 uA typ in standby mode.)  
7) ON/OFF control is enabled independently for each channel. (DT terminal)  
Application  
LCD, PDP, PC, AV, Printer, DVD, Projector TV, Fax, Copy machine, Measuring instrument, etc.  
Absolute maximum rating  
Item  
Symbol  
Rating  
Unit  
Supply voltage  
Vcc  
Pd  
36  
5001  
V
mW  
V
Permissible loss  
OUT terminal voltage resistance  
C5V terminal voltage resistance  
Operation temperature range  
Storage temperature range  
Joint temperature  
OUT  
C5V  
Topr  
Tstg  
Tjmax  
Vcc-7V to Vcc  
Vcc-7V to Vcc  
-40 to +85  
-55 to +150  
150  
V
°C  
°C  
°C  
*1 When glass epoxy board 70.0 mm 70.0 mm 1.6 mm is installed onboard. Reduced by 4.0 mW/C above Ta=25C.  
Operating condition (Ta=25C)  
Item  
Symbol  
Range  
Unit  
Supply voltage  
Vcc  
OUT  
3.6 to 35  
C5V – Vcc  
47 to 3000  
100 to 1500  
0 to Vcc  
V
V
Output terminal voltage  
Timing capacity  
CCT  
pF  
kHz  
V
Oscillation frequency  
STB input voltage  
SEL input voltage  
Fosc  
VSTB  
VSELTB  
0 to Vcc  
V
www.rohm.com  
© 2011 ROHM Co., Ltd. All rights reserved.  
2011.08 - Rev.D  
1/15  

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