JTMB8836 JTMB8836A high performance offline PWM Power switch for low power AC/DC charger and adapter applications. It operates in primary-side sensing and regulation. Consequently

目录

   1.产品概述           2.产品特点         3.应用范围         4.技术规格书下载（PDF文档）

    5.产品封装图        6.电路原理图      7.相关产品

一.产品概述  

         JTMB8836  JTMB8836A is a high performance offline PWM Power switch for low power AC/DC charger and adapter

applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could

 be eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in

 the figure below.

    Fig.1. Typical CC/CV Curve

      In CC control, the current and output power setting can be adjusted externally by the sense resistor Rs

at CS pin. In CV control, multi-mode operations are utilized to achieve high performance and high efficiency.

 In addition, good load regulation is achieved by the built-in cable drop compensation.Device operates in PFM

 in CC mode as well at large load condition and it operates in PWM with frequency reduction at light/medium load.

      JTMB8836  JTMB8836A offers power on soft start control and protection coverage with auto-recovery features

 including Cycle-by-Cycle current limiting, VDD OVP,VDD clamp and UVLO. High precision constant voltage (CV) 

and  constant current (CC) can be achieved by JTMB8836  JTMB8836A.

二.产品特点

 ■ ±5% Constant Voltage Regulation at Universal AC input

■ High Precision Constant Current Regulation at Universal AC input

■ Primary-side Sensing and Regulation Without TL431 and Opto-coupler

■ Programmable CV and CC Regulation

■ Adjustable Constant Current and Output Power Setting

■ Built-in Secondary Constant Current Control with Primary Side Feedback

■ Built-in Adaptive Current Peak Regulation

■ Built-in Primary winding inductance compensation

■ Programmable Cable drop Compensation

■ Power on Soft-start

■ Built-in Leading Edge Blanking (LEB)

■ Cycle-by-Cycle Current Limiting

■ VDD Under Voltage Lockout with Hysteresis(UVLO)

■ VDD OVP

■ VDD Clamp

三.应用范围    

 Low Power AC/DC offline SMPS for

■ Cell Phone Charger

■ Digital Cameras Charger

■ Small Power Adapter

■ Auxiliary Power for PC, TV etc.

■ Linear Regulator/RCC Replacement

JTMB8836 is offered in DIP8 package.

四.技术规格书（产品PDF)    

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五.产品封装图

六.电路原理图   

七.相关芯片选择指南