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MC3845

Description
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS High performance current mode PWM controllers
CategoryPower management   
File Size525KB,5 Pages
ManufacturerGuangdong Huaguan Semiconductor Co., Ltd.
Websitehttp://www.hgsemi.net/
Guangdong Huaguan Semiconductor Co., Ltd. was established in 2011. It is a quasi-high-tech enterprise specializing in the research and development, packaging, testing and sales of semiconductor devices. The company has an internationally advanced level of semiconductor discrete devices and integrated circuit packaging and testing production lines, and a technical team with rich experience in the design, packaging and testing of semiconductor devices. It has established long-term strategic cooperative relations with first-class companies in the same industry, and has formed a professional technical development team to engage in the development of new products and new technologies. The company's R&D project products include power management, operational amplifiers, audio amplifiers, interfaces and drivers, logic devices, memory, time base and clock, data acquisition, MOSFT and special circuits, which are mainly used in automotive electronics, instrumentation, network communications, industrial automation, LED lighting, switching power supplies, smart home appliances, gold card projects, smart transportation and other fields. Huaguan products are positioned as high-end quality, and have been well received by users in recent years. It is currently a high-end quality brand in the industry; HGSEMI&HGC is Huaguan's own brand. The establishment of an independent brand is more conducive to our service to customers, promoting the development of the company, and becoming a leading manufacturer in China's semiconductor industry.
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MC3845 Overview

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS High performance current mode PWM controllers

Features

Product Name: HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS High performance current mode PWM controller


Product model: MC3845


Product Description:


The HG are high performance fixed frequency


current mode controllers that specifically designed for Off-Line and


DC to DC converter applications with minimal external parts count.


The differences between UC3844 and UC3845 are the maximum


duty cycle ranges and under-voltage lockout thresholds. The


UC3844 ideally suited to off-line applications with UVLO thresholds


of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of


8.5V(ON) and 7.6V(OFF) for lower voltage applications.



parameter:


Total Power Supply and Zener Current (ICC+Iz) 30 mA


Output Current, Source or Sink (Note 2) IOUT 1.0 A


Output Energy (Capacitive Load per cycle) W 5.0 μJ


Current Sense and Voltage feedback Inputs VIN -0.3 ~ +5.5 V


Error Amp Output Sink Current ISINK 10 mA


Power Dissipation PD SOP-8 862 mW


PD DIP-8 1250 mW


Junction Temperature TJ +150 °C


Operation Temperature Range TOPR 0 ~ 70 °C


Storage Temperature Range TSTG -65 ~ +150 °C


Package: DIP-8 SOP-8


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