SG6860SZ

更新时间： 2024-10-29 13:13:27

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
11页	549K
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数据手册

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SG6860SZ 数据手册

March 2008

SG6860

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

Green-Mode PWM

Supports the “Blue Angel” Eco Standard

Low Start-up Current: 9µA

consumption,

proprietary green-mode function

Low Operating Current: 3mA

Leading-Edge Blanking

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 strict power conservation requirements.

Constant Output Power Limit

Universal Input

The BiCMOS fabrication process enables reducing the

start-up current to 9µA and the operating current to

3mA. To further improve power conservation, a large

start-up 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 even during

short-circuits.

Built-in Synchronized Slope Compensation

Current Mode Operation

Cycle-by-cycle Current Limiting

Under-Voltage Lockout (UVLO)

Programmable PWM Frequency with Frequency

Hopping

V_DDOver-Voltage Protection (Latch off)

Gate Output Voltage Clamped at 17V

Low Cost

To protect the external power MOSFET from being

damaged by supply over voltage, the SG6860’s output

driver is clamped at 17V. SG6860 controllers can

improve the performance and reduce the production

cost of power supplies. The SG6860 can replace linear

and RCC-mode power adapters. It is available in 8-pin

DIP and 6-pin SOT-26 packages.

Few External Components Required

Small SOT-26 Package

Applications

Power Adaptors

Open-Frame SMPS

Ordering Information

Part Number

SG6860TZ

Operating Temperature Range

Package

Packing Method

Tape & Reel

Rail

-40°C to +85°C

Small SOT-26 Package

SG6860DZ

8-pin Dual in-line Package (DIP)

All packages are lead free per JEDEC: J-STD-020B standard.

SG6860 • Rev. 1.0.1

www.fairchildsemi.com

12 3 4 5 6 7...11

中文翻译

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