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UC3843D - Fixed Frequency Current Mode PWM Controller

Download the UC3843D datasheet PDF. This datasheet also covers the UC3843 variant, as both devices belong to the same fixed frequency current mode pwm controller family and are provided as variant models within a single manufacturer datasheet.

General Description

UC3843 is a fixed frequency current-mode PWM controller.

It is specially designed for Off Line and DC-to-DC converter applications with minimal external component.

Key Features

  • a trimmed oscillator for precise duty cycle control, a temperature compensated reference, a high gain error amplifier, a current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. The device is protective features consisting of input and reference under-voltage lockouts each with hysteresis, cycle-by-cycle current limiting. PIN.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC3843-ChipsWinner.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number UC3843D
Manufacturer ChipsWinner
File Size 203.38 KB
Description Fixed Frequency Current Mode PWM Controller
Datasheet download datasheet UC3843D Datasheet

📁 Similar Datasheet

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UC3843 SMPS Controller Fairchild Semiconductor
UC3843 High Performance Current Mode Controller HOTCHIP
UC3843 PWM controller UMW

Other Datasheets by ChipsWinner

Part Number Description
UC3843 Fixed Frequency Current Mode PWM Controller
UC3843P Fixed Frequency Current Mode PWM Controller

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
UC3843 Fixed Frequency Current Mode PWM Controller DESCRIPTION UC3843 is a fixed frequency current-mode PWM controller. It is specially designed for Off Line and DC-to-DC converter applications with minimal external component. This integrated circuit features a trimmed oscillator for precise duty cycle control, a temperature compensated reference, a high gain error amplifier, a current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. The device is protective features consisting of input and reference under-voltage lockouts each with hysteresis, cycle-by-cycle current limiting.