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UC3844A-BW - Current Mode PWM Controller

Download the UC3844A-BW datasheet PDF. This datasheet also covers the UC3842A-BW variant, as both devices belong to the same current mode pwm controller family and are provided as variant models within a single manufacturer datasheet.

Description

The UC3842A-BW/43A-BW/44A-BW/45A-BW are fixed frequency current mode PWM controller.

Line and DC to DC converter applications with a minimal external components.

Features

  • Low Start-Up and Operating Current.
  • High Current Totem Pole Output.
  • Undervoltage Lockout With Hysteresis.
  • Operating Frequency Up To 500KHz BLOCK.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC3842A-BW-FCI.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number UC3844A-BW
Manufacturer FCI
File Size 917.76 KB
Description Current Mode PWM Controller
Datasheet download datasheet UC3844A-BW Datasheet

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Other Datasheets by FCI

Part Number Description
UC3842A-BW Current Mode PWM Controller
UC3843A-BW Current Mode PWM Controller
UC3845A-BW 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
UC384XA-BW Current Mode PWM Controller (UC3842A-BW/43A-BW/44A-BW/45A-BW) DESCRIPTION The UC3842A-BW/43A-BW/44A-BW/45A-BW are fixed frequency current mode PWM controller. They are specially designed for OFF−Line and DC to DC converter applications with a minimal external components. Internally implemented circuits include a trimmed PIN CONNECTION (TOP VIEW) oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totempole output ideally suited for driving a power MOSFET. Protection circuitry includes built undervoltage lockout and current limiting. The UC3842A-BW and UC3844A-BW have UVLO thresholds of 16 V (on) and 10 V (off).
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