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UC3842G - HIGH PERFORMANCE CURRENT MODE CONTROLLER

General Description

The UTC UC3842G of high performance current mode controller is specifically designed for off-line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components.

Key Features

  • Low startup and operating current.
  • User defined switching frequency(Norm is 52kHz).
  • Power-saving mode for low power.
  • Under voltage lockout with hysteresis.
  • Over voltage protection.
  • Latching PWM for Cycle-By-Cycle current limiting.
  • Internally trimmed reference with undervoltage lockout.

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UNISONIC TECHNOLOGIES CO., LTD UC3842G LINEAR INTEGRATED CIRCUIT HIGH PERFORMANCE CURRENT MODE CONTROLLER ■ DESCRIPTION The UTC UC3842G of high performance current mode controller is specifically designed for off-line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components. This integrated circuit features approximately 40μA start up current, a precision reference trimmed the error amplifier input. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, and so on.