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UC1525AJ +BOM

With a current capacity of 400mA and an operating frequency of 400kHz

UC1525AJ General Description

The UC1525A/1527A pulse width modulator ICs are a game-changer in the field of switching power supply design. With enhanced performance and reduced external parts, these integrated circuits offer a superior solution for various power supply applications. The precision 5.1-V reference voltage, with 1% accuracy, eliminates the need for external resistors in the error amplifier's common-mode range. Additionally, the sync input allows for synchronization with external clocks, enabling efficient system operation. The built-in soft-start circuitry requires only an external timing capacitor, simplifying the design process

Key Features

  • 8-V to 35-V Operation
  • 5.1-V Reference Trimmed to 1%
  • 100-Hz to 500-kHz Oscillator Range
  • Separate Oscillator Sync Terminal
  • Adjustable Dead-Time Control
  • Internal Soft Start
  • Pulse-by-Pulse Shutdown
  • Input Undervoltage Lockout With Hysteresis
  • Latching PWM to Prevent Multiple Pulses
  • Dual Source and Sink Output Drivers

Specifications

Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Control mode Voltage
Duty cycle (max) (%) 49 Switching frequency (max) (kHz) 500
Features Error amplifier, Multi-topology, Soft start, Synchronization pin UVLO thresholds on/off (V) 7/6.8
Operating temperature range (°C) -55 to 125 Rating Military
Gate drive (typ) (A) 0.5 Vin (max) (V) 35

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