LM2574M-ADJ/NOPB Part Information

Details for LM2574M-ADJ/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

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 fixedfrequency 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.

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Part Features

  • 3.3-V, 5-V, 12-V, 15-V, and Adjustable Output Versions
  • 52-kHz Fixed-Frequency Internal Oscillator
  • Adjustable Version Output Voltage Range: 1.23 V to 37 V (57 V for HV version) u00b14% Maximum Over Line and Load Conditions
  • High Efficiency
  • Requires Only 4 External Components
  • Specified 0.5-A Output Current
  • TTL Shutdown Capability, Low-Power Standby Mode
  • Thermal Shutdown and Current-Limit Protection
  • Uses Readily Available Standard Inductors
  • Wide Input Voltage Range: 40 V, up to 60 V for HV Version

Part Specifications

Input Voltage Min 4V
Input Voltage Max 40V
No. of Outputs 1Outputs
DC / DC Converter IC Case SOIC
No. of Pins 14Pins
Output Current 500mA
Output Voltage Min 1.23V
Output Voltage Max 37V
RoHS Compliant

Alternative Part Descriptions

  • SIMPLE SWITCHER 0.5A Reg LM2574M-ADJ | RS Components
  • STEP-DOWN REGULATOR, SOIC-14; INPUT VOLT; MSL:MSL 3 - 168 hours; SVHC:No SVHC (15-Jan-2019) RoHS Compliant: Yes | Newark Electronics
  • PMIC; DC/DC converter; Uin: 4÷40V; Uout: 1.23÷37V; SO14-W; buck | Transfer Multisort Elektronik
  • Switch. Reg 0,5A 1,23-37V 45Vs SOL14 | Schukat Electronic
  • 8V to 40V, 500mA SIMPLE SWITCHER® buck converter with 4 external components | Texas Instruments
  • Switching Regulator [Texas Instruments] LM2574M-ADJ/NOPB Switching Regulator | Distrelec

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