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60V Low IQ Step-Down DC/DC Controller with 100% Duty Cycle Capability
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LTC3864
60V Low IQ Step-Down
DC/DC Controller with
100% Duty Cycle Capability
Description Features n n n n n n n n n n n n n n Wide Operating VIN Range: 3.5V to 60V
Wide VOUT Range: 0.8V to VIN
Low Operating IQ = 40µA
Very Low Dropout Operation: 100% Duty Cycle
Strong High Voltage MOSFET Gate Driver
Constant Frequency Current Mode Architecture
Verified FMEA for Adjacent Pin Open/Short
Selectable High Efficiency Burst Mode® Operation or
Pulse-Skipping Mode at Light Loads
Programmable Fixed Frequency: 50kHz to 850kHz
Phase-Lockable Frequency: 75kHz to 750kHz
Accurate Current Limit
Programmable Soft-Start or Voltage Tracking
Internal Soft-Start Guarantees Smooth Start-Up
Power Good Output Voltage Monitor
Low Shutdown IQ = 7µA
Available in Small 12-Pin Thermally Enhanced MSOP
and DFN Packages The LTC®3864 is a robust, high voltage step-down DC/DC
controller optimized for automotive and industrial applications. It drives a P-channel power MOSFET switch allowing …