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UC2845 - HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

Description

The UTC UC2844/2845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count.

Features

  • S.
  • Operation output switching frequency up to 500 kHz.
  • Output deadtime adjustable from 50% to 70%.
  • Automatic feed forward compensation.
  • Latching PWM for cycle-by-cycle current limiting.
  • High current totem pole output.
  • Internally trimmed reference with under voltage lockout.
  • UVLO with hysteresis.
  • Low startup and operating current.

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Datasheet preview – UC2845

Datasheet Details

Part number UC2845
Manufacturer Unisonic Technologies
File Size 285.95 KB
Description HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
Datasheet download datasheet UC2845 Datasheet
Additional preview pages of the UC2845 datasheet.

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Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD UC2844/45 LINEAR INTEGRATED CIRCUIT HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS „ DESCRIPTION The UTC UC2844/2845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count. The differences between UC2844 and UC2845 are the maximum duty cycle ranges and under-voltage lockout thresholds. The UC2844 ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC2845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for lower voltage applications.
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