LM2576HVSX-5.0 Switching Voltage Regulators Power Management ICs

Features
• Newer products available:
– LMR33630 36-V, 3-A, 400-kHz synchronous
converter
– LM76003 60-V, 3.5-A, 2.2-MHz synchronous
converter
• 3.3-V, 5-V, 12-V, 15-V, and adjustable output
versions
• Adjustable version output voltage range,1.23 V to
37 V (57 V for HV version) ±4% maximum over line
and load conditions
• Specified 3-A output current
• Wide input voltage range: 40 V Up to 60 V for HV
version
• Requires only four external components
• 52-kHz fixed-frequency internal oscillator
• TTL-shutdown capability, low-power standby mode
• High efficiency
• Uses readily available standard inductors
• Create a custom design using the LMR33630 or
LM76003 with the WEBENCH Power Designer

Applications
• Motor drives
• Merchant network and server PSU
• Appliances
• Test and measurement equipment

Description
The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version.

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