DESCRIPTION
●The UC1525B pulse width modulator integrated circuit is designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip 5.1-V buried zener reference is trimmed to ±0.75%, and the input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors. A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock. A single resistor between the CT and the discharge terminals provide a wide range of dead-time adjustment.
●FEATURES
●• QML-V Qualified, SMD 5962-89511
●• Rad-Tolerant: 30 kRad (Si) TID (1)
●• 8-V to 35-V Operation
●• 5.1-V Buried Zener Reference Trimmed to ±0.75%
●• 100-Hz to 400-kHz Oscillator Range
●• Separate Oscillator Sync Terminal
●• Adjustable Deadtime Control
●• Internal Soft Start
●• Pulse-by-Pulse Shutdown
●• Input Undervoltage Lockout With Hysteresis
●• Latching PWM to Prevent Multiple Pulses
●• Dual Source/Sink Output Drivers
●• Low Cross Conduction Output Stage
●• Tighter Reference Specifications