ON UC3842AN

PWM 控制器11 mA

Overview

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The UCx84xA family of control devices is a pin-for-pin compatible improved version of theUCx84x family. Providing the necessary features to control current-mode or switched-mode powersupplies, this family of devices has many improved features: startup current is less than 0.5 mA,oscillator discharge is trimmed to 8.3 mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2 V for VCC over 5V.

Features

? Under Voltage Lock Out With Hysteresis

? Short Shutdown Delay Time: typ.100ns

? High Current Totem-pole Output

? Output Swing Limiting: 22V

? Low Start Current 0.2mA (typ)

? Operating Range Up To 500KHz

? Cycle by Cycle Current Limiting

Applications

? Power Modules

? Industrial PSU

? Battery Operated PSU

? Switch Mode Power Supplies (SMPS)

? DC-DC Converters