SG6858 Datasheet Green-Mode PWM Controller

Manufacturer: Fairchild (now onsemi)

SG6858 green-mode pwm controller by Fairchild (now onsemi) - Datasheet Preview

Datasheet Details

Part number	SG6858
Manufacturer	Fairchild (now onsemi)
File Size	860.71 KB
Description	Green-Mode PWM Controller
Download	SG6858 Download (PDF)

General Description

This highly integrated PWM controller provides several special enhancements designed to meet the low standby-power needs of low-power SMPS.

To minimize standby power consumption, the proprietary greenmode 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.

Overview

SG6858 — Low-Cost, Green-Mode, PWM Controller for Flyback Converters SG6858 Low-Cost, Green-Mode, PWM Controller for Flyback.

Key Features

Green-Mode PWM.
Supports the ”Blue Angel” Standard.
Low Startup Current: 10µA (Maximum).
Low Operating Current: 2.5mA.
Leading-Edge Blanking (LEB).
Constant Output Power Limit.
Built-in Synchronized Slope Compensation.
Current-Mode Operation.
Cycle-by-Cycle Current Limiting.
Under-Voltage Lockout (UVLO).
Programmable PWM Frequency.
VDD Over-Voltage Protection with Auto-Restart.
Gate Output Voltage Clamped at 17V.
Few External.

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