Microchip LM2576-3.3WU-TR
Manufacturer No:
LM2576-3.3WU-TR
Manufacturer:
Microchip
Package:
TO-263-6, D2Pak (5 Leads + Tab), TO-263BA
Description:
3A Step-Down SMPS Regulator
Quantity:
In Stock :2062
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Shipped from：HK Warehouse
Expected Shipping：Wed, Jun 3 - Thu, Jun 4, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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2. For in-stock parts, orders normally could be shipped out within 1-2days.
LM2576-3.3WU-TR Information
Microchip LM2576-3.3WU-TR technical specifications, attributes, parameters and parts with similar specifications to Microchip LM2576-3.3WU-TR.
- Type
- Parameter
- Max Duty Cycle (%)
- 98.0
- Input Voltage Range Max
- 40
- Input Voltage Range Min
- 4
- # of Outputs
- 1
- Output Current
- 3000
- Driver Type
- Buck
- Quiescent Current
- 30
- Synchronous Rectifier
- No
- Temp Range Max °C (degrees Celsius)
- 125
- Temp Range Min
- -40
- Type
- Parameter
- Vfb V (volt)
- 1.23
- Vout Min
- 1.23
- Vref (V)
- 0
Download datasheets and manufacturer documentation for Microchip LM2576-3.3WU-TR.
Data Sheets:
The LM2576 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.
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.
A standard series of inductors available from several different manufacturers are ideal for use with the LM2576 series. This feature greatly simplifies the design of switch-mode power supplies.
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.
- 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
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