LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5
Monolithic 3A, 1.25MHz Step-Down Switching Regulator
FEATURES
n 3A Sw...
LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5
Monolithic 3A, 1.25MHz Step-Down Switching
Regulator
FEATURES
n 3A Switch in a Thermally Enhanced 16-Lead TSSOP or 8-Lead SO Package
n Constant 1.25MHz Switching Frequency n Wide Operating Voltage Range: 3V to 25V n High Efficiency 0.09Ω Switch n 1.2V Feedback Reference Voltage n Uses Low Profile Surface Mount Components n Low Shutdown Current: 15μA n Synchronizable to 2MHz n Current Mode Loop Control n Constant Maximum Switch Current Rating at
All Duty Cycles* n Available in 8-Lead SO and 16-Lead Thermally
Enhanced TSSOP Packages
APPLICATIONS
n DSL Modems n Portable Computers n Regulated Wall Adapters n Battery-Powered Systems n Distributed Power
DESCRIPTION
The LT®1765 is a 1.25MHz monolithic buck switching
regulator. A high efficiency 3A, 0.09Ω switch is included on the die together with all the control circuitry required to construct a high frequency, current mode switching
regulator. Current mode control provides fast tran...