PDF, 1.4 Mb, Language: en, File uploaded: Feb 8, 2018, Pages: 38
Low IQ, 2.25MHz, Triple Output, Buck/Buck/Boost Synchronous Controller
Extract from the document
LTC7815
Low IQ, 2.25MHz,
Triple Output, Buck/Buck/Boost
Synchronous Controller
DESCRIPTION FEATURES Dual Buck Plus Single Boost Synchronous Controllers
n Wide Bias Input Voltage Range: 4.5V to 38V
n Outputs Remain in Regulation Through Cold Crank
Down to a 2.5V Input Supply Voltage
n Buck Output Voltage Range: 0.8V ≤ V
OUT ≤ 24V
n Boost Output Voltage Up to 60V
n Low Operating I : 28μA (One Channel On)
Q
n R
SENSE or DCR Current Sensing
n 100% Duty Cycle for Boost Synchronous MOSFET
Even in Burst Mode® Operatio Phase-Lockable Frequency (320kHz to 2.25MHz)
n Programmable Fixed Frequency (320kHz to 2.25MHz)
n Very Low Buck Dropout Operation: 98% Duty Cycle
n Small 38-Lead 5mm × 7mm QFN Package
n APPLICATIONS n n Automotive Always-On and Start-Stop Systems
Battery Operated Digital Devices
Distributed DC Power Systems …
