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LM2576HVT-ADJ/NOPB

Mfr. #:
LM2576HVT-ADJ/NOPB
Mfr.:
Texas Instruments
Product Type:
Buck Converter
Series:
LM2576HV
Package / Case:
5-TO-220
Description:
60 V input, 3 A adjustable buck switching regulator

Product Attributes

AttributeValue
TopologyAsynchronous step-down (buck); integrated switch with external catch diode and inductor
Input VoltageUp to 60 V for HV version; minimum depends on the output voltage and headroom (8 V at 5 V output in specified test circuit)
Output Voltage1.23 to 57 V adjustable; requires adequate input headroom
Output Current3 A
Output Accuracy+/-4% maximum over line and load
Switching Frequency52 kHz typical; 42 to 63 kHz over full operating temperature range
Efficiency77% typical at VIN = 12 V, VOUT = 5 V, IOUT = 3 A using specified reference circuit
Quiescent Current5 mA typical, 10 mA maximum; 50 µA typical / 200 µA maximum in shutdown with ON/OFF = 5 V
ProtectionCycle-by-cycle switch current limiting and thermal shutdown
Operating Temperature−40 to +125°C recommended junction temperature
ShutdownTTL-compatible input
Package DetailsTO-220-5, KC; 10.16 x 8.51 mm nominal body

Product Description

The HV adjustable option supports output settings from 1.23 V to 57 V using an external feedback divider, subject to input headroom. Its 60 V input rating distinguishes the high-voltage member from the 40 V standard family.

The internal switching element uses a 52 kHz oscillator and requires an external inductor and catch diode. At the documented 12 V input, 5 V output and 3 A test point, the reference circuit reaches 77% typical efficiency; thermal design and component selection affect practical performance.

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