General Description

The AP3842C/3C/4C/5C are high performance fixed frequency current-mode PWM controller series.

Features

• Low Start-up Current: 50µA

• Robust VREF Line/Load Regulation

Low Line Regulation : 4mV

Low Load Regulation : 4mV

• High Stability of Reference Voltage over a Full

Temperature Range: 0.2mV/ oC

• Operating Frequency up to 500KHz

• High PWM Frequency Stability over a Full Temperature Range: 2.5

• High PWM Frequency Stability under a Full Supply Voltage Range: 0.2

• Accurate Over-temperature Protection with Hysteresis

• UVLO with Hysteresis

Applications

• Off-line Converter

• DC-DC Converter

• Voltage Adapter

• CRT Monitor Power Supply

• Desktop Power Supply

• DVD/STB Power Supply