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TI LM2574MX-3.3/NOPB product image
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TI LM2574MX-3.3/NOPBRoHS

Manufacturer
TI
MPN
LM2574MX-3.3/NOPB
LCSC Part #
C140238
Packaging
SOIC-14-300mil
Customer #
Key Attributes
0.5A Buck Voltage Regulator
Datasheetpdf iconTI LM2574MX-3.3/NOPB
In-Stock: 645
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QtyUnit PriceTotal Amount
1+$ 1.9597$ 1.96
10+$ 1.7875$ 17.88
30+$ 1.6786$ 50.36
100+$ 1.5665$ 156.65
500+$ 1.5161$ 758.05
1,000+$ 1.495$ 1495.00
Standard Packaging1000/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerTI
PackagingSOIC-14-300mil
Operating Temperature-40℃~+125℃@(TJ)
Frequency - Switching52kHz
FunctionStep-down type
Number of Outputs1
FeaturesOvercurrent Protection;Cycle-by-cycle current limiting
Output TypeFixed
TopologyBuck
Operating Voltage4V~40V
Switch tube (built-in/external)Built-in
Output Voltage3.3V
Output Current500mA
Quiescent Current5mA
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Introduction

AI Translation

The LM2574xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed - frequency oscillator. The LM2574xx series offers a high - efficiency replacement for popular three - terminal linear regulators. Because of its high efficiency, the copper traces on the printed - circuit board (PCB) are normally the only heat sinking needed. A standard series of inductors optimized for use with the LM2574 are available from several different manufacturers. This feature greatly simplifies the design of switch - mode power supplies. Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 - μA (typical) standby current. The output switch includes cycle - by - cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Features

AI Translation
  • 3.3 - V, 5 - V, 12 - V, 15 - V, and Adjustable Output Versions
  • Adjustable Version Output Voltage Range: 1.23 V to 37 V (57 V for HV version) ±4% Maximum Over Line and Load Conditions
  • Specified 0.5 - A Output Current
  • Wide Input Voltage Range: 40 V, up to 60 V for HV Version
  • Requires Only 4 External Components
  • 52 - kHz Fixed - Frequency Internal Oscillator
  • TTL Shutdown Capability, Low - Power Standby Mode
  • High Efficiency
  • Uses Readily Available Standard Inductors
  • Thermal Shutdown and Current - Limit Protection

Applications

AI Translation
  • Simple High - Efficiency Step - Down (Buck) Regulator
  • Efficient Preregulator for Linear Regulators
  • On - Card Switching Regulators
  • Positive - to - Negative Converter (Buck - Boost)