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UC2844N +BOM

Current Mode PWM Controller

UC2844N General Description

The UC2844N is a high-performance current-mode controller designed for use in switching power supplies. It features an internal oscillator with frequency up to 500kHz, allowing for efficient operation in a wide range of applications. The device also includes a precision reference voltage of 5V, adjustable soft start, and current-limiting function to protect against overcurrent conditions.The UC2844N offers a wide input voltage range of 8V to 35V, making it suitable for use in various power supply designs. It features a low output impedance and high gain error amplifier for accurate regulation of output voltage. The device can drive both power N-channel MOSFETs and bipolar power transistors, providing flexibility in design.

Key Features

  • High-performance integrated circuit for controlling flyback, boost, and SEPIC converters
  • Programmable PWM oscillator with adjustable dead time
  • Current limiting and soft-start function to protect against overloads
  • Precision voltage reference and error amplifier for reliable regulation
  • Wide input voltage range and high switching frequency capabilities
  • Application

  • The UC2844N is commonly used in switch mode power supplies, battery chargers, and motor control applications
  • It is also utilized in LED drivers, industrial control systems, and solar inverters
  • The device is versatile and offers high efficiency and reliability in various power management applications
  • Specifications

    Topology Boost, Buck, Flyback, Forward Control mode Peak current mode
    Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 500
    Features Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Multi-topology UVLO thresholds on/off (V) 16/10
    Operating temperature range (°C) -40 to 85 Rating Catalog
    Gate drive (typ) (A) 1 Vin (max) (V) 28

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    In Stock: 6,228

    Minimum Order: 1

    Qty. Unit Price Ext. Price
    1+ $3.639 $3.64
    200+ $1.409 $281.80
    500+ $1.359 $679.50
    1000+ $1.335 $1,335.00

    The prices below are for reference only.