Datasheet Linear Technology LTC7800HUDC#PBF — 数据表

LTC7800
Low IQ, 60V, High
Frequency Synchronous
Step-Down Controller
DESCRIPTION FEATURES n n n n n n n n n n n n n n Wide VIN Range: 4V to 60V (65V Abs Max)
Low Operating IQ: 50μA
Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
RSENSE or DCR Current Sensing
Phase-Lockable Frequency (320kHz to 2.25MHz)
Programmable Fixed Frequency (320kHz to
2.25MHz)
Selectable Continuous, Pulse-Skipping or Low Ripple
Burst Mode® Operation at Light Load
Selectable Current Limit
Very Low Dropout Operation: 98% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Power Good Output Voltage Monitor
Output Overvoltage Protection
Low Shutdown IQ: < 14μA
Internal LDO Powers Gate Drive from VIN or EXTVCC
No Current Foldback During Start-Up
Small 20-Pin 3mm × 4mm QFN Package APPLICATIONS The LTC®7800 is a high performance step-down switching
regulator DC/DC controller that drives an all N-channel …