LT3724EFE#TRPBF Power Path Management IC Switching Voltage Regulators High Voltage Non-Synch Controller

FEATURES

n Wide Input Range: 4V to 60V
n Output Voltages up to 36V (Step-Down)
n Burst Mode® Operation: <100μA Supply Current n 10μA Shutdown Supply Current
n ±1.3% Reference Accuracy
n 200kHz Fixed Frequency
n Drives N-Channel MOSFET
n Programmable Soft-Start
n Programmable Undervoltage Lockout
n Internal High Voltage Regulator for Gate Drive
n Thermal Shutdown
n Current Limit Unaffected by Duty Cycle
n 16-Pin Thermally Enhanced TSSOP Package

APPLICATIONS

n Industrial Power Distribution
n 12V and 42V Automotive and Heavy Equipment n High Voltage Single Board Systems
n Distributed Power Systems
n Avionics
n Telecom Power

DESCRIPTION

The LT®3724 is a DC/DC controller used for medium power, low part count, low cost, high ef ciency supplies. It of- fers a wide 4V-60V input range (7.5V minimum startup voltage) and can implement step-down, step-up, inverting and SEPIC topologies.

The LT3724 includes Burst Mode operation, which re- duces quiescent current below 100μA and maintains high ef ciency at light loads. An internal high voltage bias regulator allows for simple biasing and can be back driven to increase ef ciency.

Additional features include xed frequency current mode control for fast line and load transient response; a gate driver capable of driving large N-channel MOSFETs; a precision undervoltage lockout function; 10μA shutdown current; short-circuit protection; and a programmable soft-start function that directly controls output voltage slew rates at startup which limits inrush current, minimizes overshoot and facilitates supply sequencing.