Microchip Technology LM2576
The LM2576 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Both versions are capable of driving a 3A load with excellent line and load regulation. These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator.| Part No. | LM2576 |
|---|---|
| Datasheet | LM2576 Download |
| Manufacturer |  Microchip Technology |
| Description | 52kHz Simple 3A Buck Regulator |
| Buy | Stock & Price |
FEATURES
● 3.3V, 5V, 12V, and Adjustable Output Versions● Voltage over Specified Line and Load Conditions: - Fixed Version: ±3% Max. Output Voltage - Adjustable Version: ±2% Max. Feedback Voltage
● Specified 3A Output Current
● Wide Input Voltage Range of 4V to 40V
● Wide Output Voltage Range of 1.23V to 37V
● Requires Only Four External Components
● 52 kHz Fixed-Frequency Internal Oscillator
● Low Power Standby Mode IQ Typically <200 μA
● 80% Efficiency (Adjustable Version Typically >80%)
● Uses Readily Available Standard Inductors
● Thermal Shutdown and Current Limit Protection
● 100% Electrical Thermal Limit Built-In
APPLICATIONS
● Simple High-Efficiency Step-Down (Buck) Regulator● Efficient Pre-Regulator for Linear Regulators
● On-Card Switching Regulators
● Positive and Negative Converter (Inverting Buck-Boost)
● Isolated Flyback Converter using Minimum Number of External Components
● Negative Boost Converter Package Types GND LM2576 TO-220 (T) (Top View) 5- ON/OFF 4- FEEDBACK 3- GROUND 2- OUTPUT 1- VIN
GENERAL DESCRIPTION
Fixed versions are available with a 3.3V, 5V, or 12V fixed output.
