Micrel LM2576BT L3

降压降压7V40V3A

Overview

The LM2576BT series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, or 12V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 3A load with excellent line and load regulation.

The feedback voltage is guaranteed to ±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified input voltages and output load conditions. The oscillator frequency is guaranteed to±10%. External shutdown is included, featuring less than 200µA standby current. The output switch includes cycle-by-cycle current limiting and thermal shutdown for full protection under fault conditions.

Features

SIMPLE SWITCHER® Series
Bulk Package
Positive or Negative Output Configuration
Buck Topology
Adjustable Output Type
1 Number of Outputs
7V Voltage - Input (Min)
40V Voltage - Input (Max)
1.23V Voltage - Output (Min/Fixed)
37V Voltage - Output (Max)
3A Current - Output
52kHz Frequency - Switching
No Synchronous Rectifier
Through Hole Mounting Type