Microchip LM2574-3.3YN

Manufacturer No:

LM2574-3.3YN

Manufacturer:

Microchip

Package:

8-DIP (0.300, 7.62mm)

Description:

0.5A Step-Down SMPS Regulator

Quantity:

Delivery:

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In Stock :Available

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LM2574-3.3YN information

Microchip LM2574-3.3YN technical specifications, attributes, parameters and parts with similar specifications to Microchip LM2574-3.3YN.

Type
Parameter

Max Duty Cycle (%)
98.0

Input Voltage Range Max V (volt)
40

Input Voltage Range Min V (volt)
4

# of Outputs
1

Output Current
500

Driver Type
Buck

Quiescent Current µA (microampere)
5

Synchronous Rectifier
No

Temp Range Max °C (degrees Celsius)
85

Temp Range Min °C (degrees Celsius)
-40

VOUT Max V (volt)
37.0

VFB V (volt)
1.23

VOUT Min V (volt)
1.23

Vref (V)
0

HyperLight Load®
No

Light Load Mode
No

Adjustable VOUT
Yes

Download datasheets and manufacturer documentation for Microchip LM2574-3.3YN.

Data Sheets:

1bf5f605d59e0a931c80728297e0d74a.pdf

The LM2574 family is a series of easy to use fixed and adjustable switching voltage regulators. The LM2574 contains all of the active circuitry necessary to construct a stepdown (buck) switching regulator and requires a minimum of external components.

The LM2574 is available in 3.3V, 5V, and 12V fixed output versions, or an adjustable version with an output voltage range of 1.23V to 37V. Output voltage is guaranteed to ±4% for specified input and load conditions.

The LM2574 can supply 0.5A while maintaining excellent line and load regulation. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

An external shutdown connection selects operating or standby modes. Standby current is less than 200µA.

Heat sinks are generally unnecessary due the regulator's high efficiency. Adequate heat transfer is usually provided by soldering all package pins to a printed circuit board.

The LM2574 includes internal frequency compensation and an internal 52kHz fixed frequency oscillator guaranteed to ±10% of the frequency.

Circuits constructed around the LM2574 use a standard series of inductors which are available from several different manufacturers.

3.3V, 5V, 12V, and adjustable output versions
Adjustable version output 1.23V to 37V ±4% Max. over Line and Load conditions.
Guaranteed 0.5A output current
Wide input voltage, up to 40V
Thermal shutdown and current limit protection
Requires only 4 external components.
Shutdown capability (standby mode)
Low power standby mode < 200µA typical
High efficiency
52kHz fixed frequency internal oscillator
Uses standard inductors

User Guide

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