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Details for LM2576WU by Microchip Technology
LM2576
LM2576WU
Buy Directly from Microchip Technology Inc (4400 in stock) $1.9900
3A Step-Down SMPS Regulator
LM2576WU image

LM2576WU by Microchip Technology

3A Step-Down SMPS Regulator
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
Description

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.

Specifications
Regulator Type:
Step Down (Buck)
Switching Frequency (kHz):
52
Input Voltage Range Min:
4
Input Voltage Range Max:
40
Output Current:
3000
Temp Range Min:
-40
Temp Range Max:
125
Vout Min (V):
1.23
Quiescent Current (mA) typ:
30
SHUTDOWN Current (µA) (Typ):
50
# of Outputs:
1
Vfb (V):
1.23
Duty Cycle Max (%):
0.98
Temperature Range:
-40C to +85C
Alternate Descriptions
3A STEP-DOWN SMPS REGULATOR 5 DDPAK TUBE Newark Electronics
3A STEP-DOWN SMPS REGULATOR Avnet America
PMIC; DC/DC converter; Uoper:4÷40V; Uout:1.23÷37V; TO263-5; buck Transfer Multisort Elektronik
3A Step-Down SMPS Regulator Microchip Technology Inc
3A STEP-DOWN SMPS REGULATOR Avnet Europe
LM2576 Series 40 V 52 kHz 3 A Simple Step-Down Buck Regulator - TO-263-5 Future Electronics
Details for LM2576WU by Microchip Technology
LM2576
LM2576WU
Buy Directly from Microchip Technology Inc (4400 in stock) $1.9900
DC/DC CONV BUCK 52KHZ-TO-263-5
LM2576WU image

LM2576WU by Microchip Technology

DC/DC CONV BUCK 52KHZ-TO-263-5
Features
52kHz fixed frequency internal oscillator
80% efficiency (adjustable version typically > 80%)
Guaranteed 3A output current
Low power standby mode IQ typically < 200u00b5A
Requires only 4 external components
Thermal shutdown and current limit pro
Uses readily available standard inductors
Voltage over specified line and load conditions: Fixed version: u00b13% max. output voltage Adjustable version: u00b12% max. feedback voltage
Wide input voltage range: 4V to 40V
Wide output voltage range 1.23V to 37V
Part Information
LM2576WU image
RoHS Compliant
Description
The LM2576 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator.Fixedversionsareavailablewitha3.3V,5V,or12V 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 minimumnumberofexternalcomponentsandincludeinternal 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. Astandardseriesofinductorsavailablefromseveraldifferent 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 outputloadconditions.Theoscillatorfrequencyisguaranteed 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.
Specifications
Topology:
Buck (Step Down)
Input Voltage Min:
4V
Input Voltage Max:
40V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
TO-263
No. of Pins:
5Pins
Output Current:
3A
Output Voltage Min:
1.23V
Output Voltage Max:
37V
Switching Frequency:
52kHz
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Alternate Descriptions
3A STEP-DOWN SMPS REGULATOR 5 DDPAK TUBE Newark Electronics
3A STEP-DOWN SMPS REGULATOR Avnet America
PMIC; DC/DC converter; Uoper:4÷40V; Uout:1.23÷37V; TO263-5; buck Transfer Multisort Elektronik
3A Step-Down SMPS Regulator Microchip Technology Inc
3A STEP-DOWN SMPS REGULATOR Avnet Europe
LM2576 Series 40 V 52 kHz 3 A Simple Step-Down Buck Regulator - TO-263-5 Future Electronics