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BD9305AFVM

Part Number	BD9305AFVM
Manufacturer	Rohm
Description	4.2V to 18V Input 1ch Buck Controller
Published	Oct 20, 2014
Detailed Description	Datasheet 4.2V to 18V Input 1ch Buck Controller BD9305AFVM General Description BD9305AFVM is a 1-channel DC/DC converte...
Datasheet	BD9305AFVM PDF File

Overview

Datasheet 4.
2V to 18V Input 1ch Buck Controller BD9305AFVM General Description BD9305AFVM is a 1-channel DC/DC converter controller.
A Step-down DC/DC converter can be configured by BD9305AFVM.
In addition, it has a built-in master-slave function which improves synchronization.
Features  1ch PWM Controlled DC/DC Converter Controller  Built-in Soft Start Function  Built-in Master / Slave Function  Protection Circuits:  Under Voltage Lockout Protection Circuit  Thermal Shutdown Circuit  Short Protection Circuit of Timer Latch type Applications ・TV, Power Supply for the TFT-LCD Panels used for LCD TVs, Back Lights ・DSC, DVC, Printer, DVD ,DVD Recorder, General Consumer Equipment, etc.
Key Specifications  Power Supply Voltage Range: 4.
2V to 18V  Error Amplifier Feed Back Voltage: 1.
25±1.
6%  Oscillating Frequency Range: 100kHz to 800kHz  Standby Current: 0µA(Typ)  Operating Temperature Range: -40°C to +85°C Package W(Typ) x D(Typ) x H(Max) MSOP8 2.
90mm x 4.
00mm x 0.
90mm Typical Application Circuit FB 8 1.
25V Err OSC 1 RT 20kΩ 10000pF 5.
1kΩ COMP 7 GND 6 VCC 5 Soft Start Timer Latch Shut Down VREF UVLO TSD Shut Down PWM DRV VCC VCC 10µF 0.
5Ω (When Output Short, Protect Fall VCC) 47µH 20uF 30ｋΩ ENABLE 2 CT 200pF 3 ENB 10kΩ 4 GD VCC Figure 1.
Typical Application Circuit 10ｋΩ VOUT 1kΩ 470pF ○Product structure：Silicon monolithic integrated circuit www.
rohm.
com © 2014 ROHM Co.
, Ltd.
All rights reserved.
TSZ22111・14・001 ○This product has no designed protection against radioactive rays 1/19 TSZ02201-0323AAJ00560-1-2 09.
Sep.
2014 Rev.
001 BD9305AFVM Pin Configuration TOP VIEW Pin Descriptions Pin No 1 2 3 4 5 6 7 8 Block Diagram Pin Name RT CT ENB GD VCC GND COMP FB Function External timing resistor pin External timing capacitor pin Control pin Gate drive output pin Power supply pin Ground pin Error amp output pin Error amp inversion input pin FB 8 1.
25V Err COMP 7 GND 6 VCC 5 Soft Start Timer Latch Shut Down Vref U...

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BD9305AFVM 4.2V to 18V Input 1ch Buck Controller - Rohm

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