LM2577T-ADJ 3A Step-Up Adjustable Regulator ICLM2577

The LM1577T/LM2577T are monolithic integrated circuits that provide all of the power and control functions for step-up (boost), fly back, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable.

Requiring a minimum number of external components, these regulators are cost effective, and simple to use. Listed in this data sheet are a family of standard inductors and fly back transformers designed to work with these switching regulators.

Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and thermal limiting, and under voltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no external components, a soft start mode to reduce in-rush current during start-up, and current mode control for improved rejection of input voltage and output load transients.

Datasheet: PDF

Features:

1. Requires Few External Components
2. NPN Output Switches 3.0A, can Stand off 65V
3. Wide Input Voltage Range: 3.5V to 40V
4. Current-mode Operation for Improved Transient Response, Line Regulation, and Current Limit
5. 52 kHz Internal Oscillator
6. Soft-start Function Reduces In-rush Current During Start-up
7. Output Switch Protected by Current Limit, Under-voltage Lockout, and Thermal Shutdown

Packing List:

1Pc * LM2577T-ADJ 3A Step-Up Adjustable Regulator IC