UC3525ADWTR

The UC3525ADWTR is a pulse width modulator integrated circuit that is part of the UC1525A/1527A series, designed to optimize performance and reduce the number of external parts required for various switching power supply designs. Its on-chip 5.1-V reference is precision trimmed to 1%, ensuring accurate voltage regulation, while the error amplifier's input common-mode range includes the reference voltage, eliminating the need for external resistors. The sync input to the oscillator allows for multiple units to be synchronized or a single unit to be synchronized to an external system clock, enhancing its versatility. With a wide range of dead-time adjustment through a single resistor and built-in soft-start circuitry that only requires an external timing capacitor, the UC3525ADWTR offers exceptional flexibility and ease of use. Furthermore, its integrated shutdown terminal controls the soft-start circuitry and the output stages, allowing for instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft-start recycle with longer shutdown commands, providing enhanced functionality and control capabilities

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