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UC1843B-D - HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

Download the UC1843B-D datasheet PDF. This datasheet also covers the UC1842B-D variant, as both devices belong to the same high performance current mode pwm controller family and are provided as variant models within a single manufacturer datasheet.

Description

The UTC UC1842B-D/1843B-D 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 UC1842B-D and UC1843B-D are the under-voltage lockout thresholds.

Features

  • S.
  • Operation output switching frequency up to 500 kHz.
  • 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC1842B-D-UTC.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
UC1843B-SP PWM Controller Texas Instruments
UC1843 Current-Mode PWM Controllers Texas Instruments
UC1843-HIREL current-mode PWM controller Texas Instruments
UC1843-SP current-mode PWM controller Texas Instruments
UC1843A Current Mode PWM Controller Unitrode

Other Datasheets by Unisonic Technologies

Part Number Description
UC1842B-D HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

Full PDF Text Transcription

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UNISONIC TECHNOLOGIES CO., LTD UC1842B/43B-D HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS LINEAR INTEGRATED CIRCUIT  DESCRIPTION The UTC UC1842B-D/1843B-D 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 UC1842B-D and UC1843B-D are the under-voltage lockout thresholds. The UC1842B-D ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC1843B-D has UVLO thresholds of 8.4V(ON) and 7.6V(OFF) for lower voltage applications.
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