Texas Instruments LM1577
The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable.| Part No. | LM1577 |
|---|---|
| Datasheet | LM1577 Download |
| Manufacturer |  Texas Instruments |
| Description | Step-Up Voltage Regulator |
| Buy | Stock & Price |
FEATURES
1●23 Requires Few External Components
● NPN Output Switches 3.0A, can Stand off 65V
● Wide Input Voltage Range: 3.5V to 40V
● Current-mode Operation for Improved Transient Response, Line Regulation, and Current Limit
● 52 kHz Internal Oscillator
● Soft-start Function Reduces In-rush Current During Start-up
● Output Switch Protected by Current Limit, Under-voltage Lockout, and Thermal Shutdown
TYPICAL APPLICATIONS
● Simple Boost Regulator● Flyback and Forward Regulators
● Multiple-output Regulator
DESCRIPTION
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 flyback 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 undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no ext...
