LTC3786
Low IQ Synchronous
Boost Controller
DESCRIPTION FEATURES
n n Synchronous Operation For Highest Efficiency and
Reduced Heat Dissipation
Wide VIN Range: 4.5V to 38V (40V Abs Max) and
Operates Down to 2.5V After Start-Up
Output Voltages Up to 60V
±1% 1.2V Reference Voltage
RSENSE or Inductor DCR Current Sensing
100% Duty Cycle Capability for Synchronous MOSFET
Low Quiescent Current: 55µA
Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Adjustable Output Voltage Soft-Start
Power Good Output Voltage Monitor
Low Shutdown Current IQ: 8V .100µA
PGOOD, PLLIN/MODE . –0.3V to 6V
INTVCC, (BOOST – SW) . –0.3V to 6V SENSE+, SENSE– . –0.3V to 40V
SENSE+ – SENSE– . –0.3V to 0.3V
SS, ITH, FREQ, VFB. –0.3V to INTVCC
Operating Junction Temperature Range (Notes 2, 3) …