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Date Posted: 5/05/14
Author: mm
Subject: LM2577 vs LM2596 converters

Difference between LM2577 and LM2596:

LM2577 is a step up converter
TI ref. www.ti.com/product/lm2577
ebay ref. www.ebay.com/itm/261096788682

Input voltage: 3V-30V
Output Voltage: 4-35V (Adjustable)
Output current: rated current 3A MAX ( Heat-sink Needed)
If you need its output power greater than 15W, please add with heat-sink
Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency)
Switching Frequency: 50KHz
Rectifier: Non-Synchronous Rectification
Short circuit protection: current limiting, since the recovery
Load regulation: ± 0.5%
Voltage regulation: ± 0.5%

XL6009 replace LM2577


LM2596 is a step down converter
TI ref. www.ti.com/product/lm2596
ebay ref. www.ebay.com/itm/251066005460

Input voltage 4V-35V
Output voltage 1.23V-30V
Input current 3A(maximum)
Conversion efficiency 92%( highest )
Switching frequency 150KHz
Output ripple 30mV( maximum )
Load regulation ±0.5%
Voltage regulation ± 2.5%
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