Datasheet Analog Devices LTC7149EFE#PBF — Datenblatt

LTC7149
60V, 4A Synchronous
Step-Down Regulator for
Inverting Outputs
DESCRIPTION FEATURES n n Wide VIN Range: 3.4V to 60V
Wide VOUT Range: 0V to –28V
Single Resistor VOUT Programming
Integrated 110mΩ Top N-Channel/50mΩ Bottom
N-Channel MOSFETs
Regulated IQ: 440µA, Shutdown IQ: 15µA
Board GND Referenced I/O Pins (RUN, PGOOD,
MODE/SYNC)
Accurate Resistor Programmable
Frequency (300kHz to 3MHz) with ±50%
Frequency Sync Range
92% Efficiency with 12 VIN and –5VOUT
±0.8% Output Voltage Accuracy
Peak Current Mode Operation
Burst Mode® Operation, Forced Continuous Mode
Programmable Soft-Start
Overtemperature Protection
Available in 28-Lead (4mm x 5mm) QFN and
TSSOP Packages APPLICATIONS n Industrial Applications …