UC2825A-Q1
www.ti.com SLUS781 – SEPTEMBER 2007 HIGH-SPEED PWM CONTROLLER
FEATURES 1 Qualified for Automotive Applications
Improved Version of the UC3825 PWM
Compatible With Voltage-Mode or
Current-Mode Control Methods
Practical Operation at Switching Frequencies
to 1 MHz
50-ns Propagation Delay to Output
High-Current Dual Totem-Pole Outputs:
2 A (Peak)
Trimmed Oscillator Discharge Current
Low 100-ОјA Startup Current
Pulse-by-Pulse Current-Limiting Comparator
Latched Overcurrent Comparator With
Full-Cycle Restart DESCRIPTION
The UC2825A pulse-width modulation (PWM)
controller is an improved versions of the standard
UC3825. Performance enhancements have been
made to several of the circuit blocks. Error amplifier
gain bandwidth product is 12 MHz, while input offset
voltage is 2 mV. Current limit threshold is specified to
a tolerance of 5%. Oscillator discharge current is …
