Datasheet Texas Instruments UCC3882PWTR-1G4 — 数据表

UCC3882/-1
www.ti.com SLUS294C – MARCH 1999 – REVISED FEBRUARY 2010 AVERAGE CURRENT MODE SYNCHRONOUS
CONTROLLER WITH 5-BIT DAC
Check for Samples: UCC3882/-1 FEATURES 1 DESCRIPTION Combined DAC/Voltage Monitor and PWM With
Synchronous Rectification Functions
5-Bit Digital-to-Analog (DAC) Converter
1% DAC/Reference Combined Accuracy
Compatible with 5 V and 12 V Systems and 12
V-Only Systems
Low Offset Current Sense Amplifier
Programmable Oscillator Frequency Practical
to 700 kHz
Foldback Current Limiting
Overvoltage and Undervoltage Fault Windows
2-Ω Totem Pole Outputs with Programmable
Dead Times to Eliminate Cross-Conduction
Chip Disable Function The UCC3882 combines high precision reference and
voltage monitoring circuitry with average current
mode PWM synchronous rectification controller
circuitry to power high-end microprocessors with a
minimum of external components. The UCC3882
converts 5 V or 12 V to an adjustable output ranging
from 1.8VDC to 2.05VDC in 50 mV steps and …