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UC2844 - HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

Download the UC2844 datasheet PDF. This datasheet also covers the UC2845 variant, as both devices belong to the same high performance current mode pwm controllers family and are provided as variant models within a single manufacturer datasheet.

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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC2845-UnisonicTechnologies.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
UC2844 CURRENTMODE PWM CONTROLLER ST Microelectronics
UC2844 Current Mode PWM Controller Unitrode
UC2844 Current-Mode PWM Controllers Texas Instruments
UC2844 High Performance Current-Mode Controller ON Semiconductor
UC2844 fixed frequency current mode PWM controller UMW

Other Datasheets by Unisonic Technologies

Part Number Description
UC2843B HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
UC2845 HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC2306 MICROPOWER DC/DC CONVERTERS

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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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