text.skipToContent text.skipToNavigation

warning.svgOrders shipping outside of United States will be on hold while the company evaluates tariff impacts.
Please contact your salesperson for assistance.

Truck-Icon.svgFree shipping within the continental US over $50. Conditions apply

  1. home
  2. Semiconductors
  3. Analog
  4. Regulators & References
  5. Switching Regulators
  6. LM2576-3.3WT

Microchip | LM2576-3.3WT

Manufacturer Part #

LM2576-3.3WT

LM2576 Series 40 V 52 kHz 3 A Simple Step-Down Buck Regulator - TO-220-5

ECAD Model:
Mfr. Name: Microchip
Standard Pkg:
Product Variant Information section
Date Code:
Product Specification Section
Microchip LM2576-3.3WT - Technical Attributes
Attributes Table
Topology: Buck
Input Voltage: 4V to 40V
Output Current-Max: 3A
Switching Frequency-Max: 52kHz
Package Style:  TO-220-5
Mounting Method: Flange Mount
Features & Applications
The LM2576-3.3WT is a step down switching regulator with monolithic integrated circuits, available in adjustable versions of output voltage ranging from 1.23 V to 37 V.

The LM2576 series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink and in many cases no heat sink is required.

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
  • Guaranteed 3A output current
  • Wide input voltage range: 4V to 40V
  • Wide output voltage range: 1.23V to 37V
  • Requires only 4 external components
  • 52kHz fixed frequency internal oscillator
  • Low power standby mode IQ typically < 200µA
  • 80% efficiency (adjustable version typically > 80%)
  • Uses readily available standard inductors
  • Thermal shutdown and current limit protection
  • 100% electrical thermal limit burn-in

Applications:

  • Simple high-efficiency step-down (buck) regulator
  • Efficient pre-regulator for linear regulators
  • On-card switching regulators
  • Positive to negative converter (inverting buck-boost)
  • Isolated flyback converter using minimum number of external components
  • Negative boost converter
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
8 Weeks
Minimum Order:
750
Multiple Of:
50
Total
$967.50
USD
Quantity
Unit Price
50
$1.33
200
$1.31
500
$1.29
1,250
$1.28
2,000+
$1.26
Product Variant Information section