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  6. LM2576-5.0WT

Microchip | LM2576-5.0WT

Manufacturer Part #

LM2576-5.0WT

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

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Mfr. Name: Microchip
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Product Variant Information section
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Product Specification Section
Microchip LM2576-5.0WT - Technical Attributes
Attributes Table
Topology: Buck
Input Voltage: 4V to 40V
Output Current-Max: 3A
Output Type: Fixed
Switching Frequency-Max: 52kHz
Operating Temp Range: -40°C to +125°C
Duty Cycle-Max: 93%
Efficiency: 82%
No. of Outputs: 1
Quiescent Current: 10mA
Storage Temperature Range: -65°C to +150°C
Package Style:  TO-220-5
Mounting Method: Flange Mount
Features & Applications
The LM2576-5.0WT series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3 V, 5 V, or 12 V fixed output. Adjustable versions have an output voltage range from 1.23 V to 37 V. Both versions are capable of driving a 3 A 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. 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:

  • 3.3 V, 5 V, 12 V, and adjustable output versions
  • Voltage over specified line and load conditions
  • Fixed version: ±3% max. output voltage
  • Adjustable version: ±2% max. feedback voltage
  • Guaranteed 3 A output current
  • Wide input voltage range 
  • Wide output voltage range 
  • Requires only 4 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 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:
    4 Weeks
    Minimum Order:
    750
    Multiple Of:
    50
    Total
    $930.00
    USD
    Quantity
    Unit Price
    50
    $1.27
    200
    $1.25
    500
    $1.24
    1,250
    $1.23
    2,000+
    $1.21
    Product Variant Information section
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