LTC7149

FEATURES n Wide VIN Range: 3.4V to 60V n Wide VOUT Range: 0V to –28V n Single Resistor VOUT Programming n Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs n Regulated IQ: 440µA, Shutdown IQ: 15µA n Board GND Referenced I/O Pins (RUN, PGOOD, MODE/SYNC) n Accurate Resistor Programmable Frequency (300kHz to 3MHz) with ±50% Frequency Sync Range n 92% Efficiency with 12 VIN and –5VOUT n ±0.8% Output Voltage Accuracy n Peak Current Mode Operation n Burst Mode® Operation, Forced Continuous Mode n Programmable Soft-Start n Overtemperature Protection n Available in 28-Lead (4mm x 5mm) QFN and TSSOP Packages APPLICATIONS n Industrial Applications n Telecom Power Supplies n Distributed Power Systems LTC7149 60V, 4A Synchronous Step-Down Regulator for Inverting Outputs DESCRIPTION The LTC®7149 is a high efficiency 60V, 4A synchronous monolithic step-down regulator for inverting output applications. The regulator features a single resistorprogrammable output voltage and h...