ST L5991

隔离10V ~ 20V

Overview

This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control.

Based on a standard current mode PWM controller this device includes some features such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction when the converter is lightly loaded.

Features

Isolated Output Isolation
Packaged with 16-DIP (0.300, 7.62mm)
Switching Frequency at Up to 1MHz
With 16 pins
Output Current at 1.5A
Operating Supply Voltage at the range of 20V

Through Hole Mounting Type

Applications

There are a lot of STMicroelectronics
L5991 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