PDF, 268 Kb, 语言: en, 文件上传: Sep 23, 2017, 页数: 20
Adjustable Frequency Current Mode Flyback DC/DC Controller
从文件中提取
LTC3805
Adjustable Frequency
Current Mode Flyback
DC/DC Controller
Description Features VIN and VOUT Limited Only by External Components
n Adjustable Slope Compensatio Adjustable Overcurrent Protection with Automatic
Restart
n Adjustable Operating Frequency (70kHz to 700kHz)
with One External Resistor
n Synchronizable to an External Clock
n ±1.5% Reference Accuracy
n Current Mode Operation for Excellent Line and Load
Transient Response
n RUN Pin with Precision Threshold and Adjustable
Hysteresis
n Programmable Soft-Start with One External Capacitor
n Low Quiescent Current: 360µA
n Small 10-Lead MSOP and 3mm × 3mm DFN
n Applications The LTC®3805 is a current mode controller for flyback
DC/DC converters designed to drive an N-channel MOSFET
in high input and output voltage converter applications.
Operating frequency and slope compensation can be
programmed by external resistors. Programmable overcurrent sensing protects the converter from short-circuits. …