KA3844BDT&R

更新时间： 2024-11-23 13:09:07

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数	文件大小	规格书
10页	125K
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KA3844BDT&R 数据手册

www.fairchildsemi.com

KA3842B/KA3843B/KA3844B/

KA3845B

SMPS Controller

Features

Description

• Low Start up Current

• Maximum Duty Clamp

The KA3842B/KA3843B/KA3844B/KA3845B are fixed

frequency current-mode PWM controller. They are

• UVLO With Hysteresis

• Operating Frequency up to 500KHz

specially designed for Off - Line and DC-to-DC converter

applications with minimum external components. These

integrated circuits feature a trimmed oscillator for precise

duty cycle control, a temperature compensated reference,

high gain error amplifier, current sensing comparator and a

high current totempole output for driving a power MOSFET.

The KA3842B and KA3844B have UVLO thresholds of

16V (on) and 10V (off). The KA3843B and KA3845B are

8.5V (on) and 7.9V (off). The KA3842B and KA3843B can

operate within 100% duty cycle. The KA3844B and

KA3845B can operate with 50% duty cycle.

8-DIP

14-SOP

Internal Block Diagram

Rev. 1.0.2

12 3 4 5 6 7...10

中文翻译

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型号	品牌	获取价格	描述	数据表
KA3844BDTF	FAIRCHILD	获取价格	暂无描述
KA3845	FAIRCHILD	获取价格	SMPS Controller
KA3845	ESTEK	获取价格	fixed frequency current mode PWM controller
KA3845B	FAIRCHILD	获取价格	SMPS Controller
KA3845BD	FAIRCHILD	获取价格	SMPS Controller
KA3845BDTF	FAIRCHILD	获取价格	暂无描述
KA3846	FAIRCHILD	获取价格	SMPS Controller
KA384X	ESTEK	获取价格	Current Mode PWM Controller
KA386	SAMSUNG	获取价格	the ka386b/bd/bs is a power amplifier designed for use in low voltage consumer application
KA386B	SAMSUNG	获取价格	the ka386b/bd/bs is a power amplifier designed for use in low voltage consumer application