Datasheet > BD8621EFV_09

BD8621EFV_09

更新时间： 2024-11-04 08:51:47

品牌	Logo	应用领域
罗姆 - ROHM		控制器
页数	文件大小	规格书
15页	451K
描述
FET Controller Type 3ch System Power Supply ICs

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BD8621EFV_09 数据手册

System Power Supply for TV Series

FET Controller Type

3ch System Power Supply ICs

BD8621EFV

No.09034EAT03

●Description

BD8621EFV has realized the high performance and reliability required as a power supply for thin-screen TV.

With built-in FET 1ch current mode control, the DC/DC Converter series has the advantage of high-speed load response

and wide phase margin.

Due to the high-speed load response, it is most suitable for TV-purpose processors with increasingly high performance, and

due to the wide phase margin it leaves a good margin for board pattern & constant setting and so facilitates its application

design.

As a high-reliability design, it has various built-in protection circuits (overcurrent protection, output voltage abnormal

protection, thermal protection, and off-latch function at the time of abnormality etc.), therefore as an advantage it does not

easily damage in every possible abnormal condition such as all-pin short circuit test etc. and hence most suitable for

thin-screen TV which requires the high reliability.

●Features

1) 3A output current

2) Low RDS(ON) internal switches (PchMOS:75mΩ，NchMOS:55mΩ)

3) ±1% reference voltage accuracy

4) Programmable frequency : 250kHz-1MHz

5) (Frequency in programmable by adjusting RT resistance or synchronizing with SYNCLK terminal.)

6) Terminal RT OPEN/SHORT detecting function

7) Over current protection function

8) Output over voltage/low voltage protection function (over : FB > VREF +60mV , low : FB < VREF -60mV)

9) Timer off latch function in abnormal circumstances

10) Thermal shutdown function

11) Under voltage protection

12) Soft start/start delay circuit

13) Soft start time out function

14) Protecting BUS function with terminal PDET

15) HTSSOP-B20 package

www.rohm.com

2009.05 - Rev.A

1/14

12 3 4 5 6 7...15

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