LM2577 5V to 12V DC Converter step up Voltage Regulator

See Other projects in : DC Switching SupplyStep Up DC converters
 And: ,

  Posted by momename - September 18, 2007 at 8:42 am

If you are looking a ICs for a DC to DC converter job. I highly recommend of IC-LM1577/LM2577 supply all of the power and control functions for
step-up (boost), flyback, and forward converter switching regulators.

The output voltage typical : Wide input voltage 3.5Vdc to 40Vdc.
Component list
- 2.2k 1/4W resistor
- 0.1uF capacitor
- 0.33uF capacitor
- 680uF 50V electrolytic capacitor
- 1N5822 high speed schottky diode (3A)
- wire coil inductor, 100uH
- “for LM2577-adj IC” 20k multi-turn variable resistor, set to ratio to R2=2k, R1=18k for voltage output of 12Vdc before soldering
Part number:
- LM2577-12 (12Vdc output)
- LM2577-15 (15Vdc output)
- LM2577-ADJ (1.23Vdc to 37Vdc output)

Using a minimum number of external parts, these regulators are price reasonable good value., and made project easily.

Included on the chip is a 3 amp NPN switch and they have protection circuit, consisting of current and
thermal limiting, and undervoltage lockout.

Other detail within a 52 kHz stable-frequency oscillator that
no external components, a soft start mode to reduce running current during start-up, and current mode
control for rejection of input voltage and output load transients.

LM2577 5V to 12V DC Converter step up Voltage Regulator



If you cannot find any circuits, Please search in box by below.


Your Source For Electronic Components