SG6846LSZ

AC-DC Converters This particular part was found to be patent infringing and we are unable to sell this product.

Description

The highly integrated SG6846 series of PWM controllers provides several features to enhance the performance of flyback converters. To minimize standby-power consumption,a proprietary green-mode function provides off-time modulation to continuously decrease the switching frequency under light-load conditions. Under zero-load conditions, the power supply enters burst-mode. This completely shuts off PWM output.

Features

  Low Startup Current: 8µA

  Low Operating Current: 3.7mA

  Peak-Current Mode of Operation with Cycle-by Cycle Current Limiting

  PWM Frequency Continuously Decreasing with Burst Mode at Light Loads

  VDDOver-Voltage Protection OVP

  AC Input Brownout Protection with Hysteresis

  Constant Output-Power Limit Full AC Input Range

  Internal Latch Circuit for OVP, OTP, and OCP

  Two-level Over-Current Protection OCP with 96ms Delay Time

  Very Few External Components

  Programmable Over-Temperature Protection OTP

Applications

General-purpose switch-mode power supplies and flyback power converters, including:

Power Adapters

Open-Frame SMPS

SMPS with Surge-Current Output, such as for Printers, Scanners, Motor Drivers