Datasheet Linear Technology LTC3777 — Datenblatt

LTC3777
150V VIN and VOUT Synchronous
4-Switch Buck-Boost Controller +
Switching Bias Supply
DESCRIPTION FEATURES 4-Switch Current Mode Single Inductor Architecture
Allows VIN Above, Below or Equal to VOUT
nn Wide V Range: 4.5V to 150V
IN
nn Wide Output Voltage Range: 1.2V ≤ V
OUT ≤ 150V
nn Synchronous Rectification: Up to 99% Efficiency
nn ±1% 1.2V Voltage Reference
nn Input or Output Average Current Limit
nn Integrated 12µA I , 150V, 85mA, Switching Bias
Q
for Optimal Thermal Performance
nn Programmable 6V to 10V DRV
CC Optimizes Efficiency
nn No Top FET Refresh Noise in Boost or Buck Mode
nn V
OUT Disconnected from VIN During Shutdown
nn Phase-Lockable Fixed Frequency (50kHz to 600kHz)
nn No Reverse Current During Start-Up …