Microchip SG3842DM

隔离10V ~ 30V

Overview

The SG1842/43 family of control IC's provides all the necessary features to implement off-line fixed frequency, current-mode switching power supplies with a minimum number of external components.Current-mode architecture demonstrates improved line regulation, improved load regulation, pulse-by-pulse current limiting and inherent protection of the power supply output switch. The band-gap reference is trimmed to ±1% over temperature.Oscillator discharge current is trimmed to less than ±10%. The SG1842/43 has under-voltage lockout, current limiting circuitry and start-up current of less than 1mA. The totem-pole output is optimized to drive the gate of a power MOSFET. The output is low in the off state to provide direct interface to an N-channel device. The SG1842/43 is specified for operation over the full military ambient temperature range of -55°C to 125°C. The SG2842/43 is specified for the industrial range of -25°C to 85°C, and the SG3842/43 is designed for the commercial range of 0°C to 70°C.

Features

Isolated Output Isolation
Packaged with 8-SOIC (0.154, 3.90mm Width)
Switching Frequency at 100Hz~500kHz
With 8 pins
Output Current at 200mA
Operating Supply Voltage at the range of 30V

Surface Mount Mounting Type

Applications

There are a lot of Microchip Technology
SG3842DM AC DC Converters applications.

• Linear Adapter Replacements
• Chargers for cell/cordless phones
• PDAs
• MP3
• Portable audio
• Adapters
• Networking
• Battery Chargers
• Power Adaptors
• Standby Power Supplies