Datasheet > SG6859A_10

SG6859A_10

更新时间： 2024-10-28 06:11:23

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		转换器控制器
页数	文件大小	规格书
13页	502K
描述
Low-Cost, Green-Mode PWM Controller for Flyback Converters

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中文翻译

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数据手册

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SG6859A_10 数据手册

March 2010

SG6859A

Low-Cost, Green-Mode PWM Controller for Flyback Converters

Features

Description

This highly integrated PWM controller provides several

enhancements designed to meet the low standby-power

needs of low-power SMPS. To minimize standby power

consumption, the proprietary green-mode function

provides off-time modulation to linearly decrease the

switching frequency under light-load conditions. This

green-mode function enables the power supply to meet

even the strictest power conservation requirements.

Green-Mode PWM

Supports the “Blue Angel” Standard

Low Startup Current: 9μA

Low Operating Current: 3mA

300mA Driving Capability

Leading-Edge Blanking

The BiCMOS fabrication process enables reducing the

startup current to 9μA and the operating current to 3mA.

To further improve power conservation, a large startup

resistance can be used. Built-in synchronized slope

compensation ensures the stability of peak current

mode control. Proprietary internal compensation

provides a constant output power limit over a universal

AC input range (90V_ACto 264V_AC). Pulse-by-pulse current

limiting ensures safe operation during short-circuits.

Constant Output Power Limit

Universal Input

Built-in Synchronized Slope Compensation

Current-Mode Operation

Cycle-by-cycle Current Limiting

Under-Voltage Lockout (UVLO)

Programmable PWM Frequency with Frequency

To protect the external power MOSFET from damage by

supply over voltage, the SG6859A’s output driver is

clamped at 17V. SG6859A controllers can be used to

improve the performance and reduce the production

cost of power supplies. The best choice for replacing

linear and RCC-mode power adapters, the SG6859A is

available in 8-pin DIP and 6-pin SSOT-6 packages.

Hopping

V_DDOver-Voltage Protection (Auto Restart)

Gate Output Voltage Clamped at 17V

Low Cost

Few External Components Required

Small SSOT-6 Package

Applications

General-purpose switching mode power supplies and

flyback power converters, such as:

Battery chargers for cellular phones, cordless

phones, PDAs, digital cameras, and power tools

Power adapters for ink jet printers, video game

consoles, and portable audio players

Open-frame SMPS for TV/DVD standby and auxiliary

supplies, home appliances, and consumer electronics

Replacements for linear transformers and RCC SMPS

PC 5V standby power

SG6859A • Rev. 1.0.3

www.fairchildsemi.com

12 3 4 5 6 7...13

中文翻译

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与SG6859A_10相关器件

型号	品牌	获取价格	描述	数据表
SG6859ADY	FAIRCHILD	获取价格	Low-Cost, Green-Mode PWM Controller for Flyback Converters
SG6859ADZ	FAIRCHILD	获取价格	Low-Cost, Green-Mode PWM Controller for Flyback Converters
SG6859ATY	FAIRCHILD	获取价格	Low-Cost, Green-Mode PWM Controller for Flyback Converters
SG6859ATZ	FAIRCHILD	获取价格	Low-Cost, Green-Mode PWM Controller for Flyback Converters
SG6859DTY	ONSEMI	获取价格	Flyback & Forward PWM Controllers, SSOT 6L, 15000-TAPE REEL
SG6859DZ	FAIRCHILD	获取价格	Low Cost Green-Mode PWM Controller for Flyback Converters
SG6859TZ	FAIRCHILD	获取价格	Low Cost Green-Mode PWM Controller for Flyback Converters
SG6860	FAIRCHILD	获取价格	Low-Cost, Green-Mode PWM Controller for Flyback Converters
SG6860DZ	FAIRCHILD	获取价格	Low-Cost, Green-Mode PWM Controller for Flyback Converters
SG6860DZ	ROCHESTER	获取价格	SWITCHING CONTROLLER, 75kHz SWITCHING FREQ-MAX, PDIP8, LEAD FREE, DIP-8

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