LM2574N-12/NOPB Part Information

Details for LM2574N-12/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

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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.

Part Downloads

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

Topology Buck (Step Down)
Input Voltage Min 4V
Input Voltage Max 40V
DC / DC Converter IC Case DIP
No. of Pins 8Pins
Output Current 500mA
Output Voltage Nom. 12V
Switching Frequency 52kHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
RoHS Compliant

Alternative Part Descriptions

  • Step down switching regulator,LM2574N-12 | RS Components
  • DC/DC CONV, BUCK, 52KHZ, DIP-8; Topology:Buck (Step Down); Input Voltage Min:4V; Input Voltage Max:40V; DC / DC Converter IC Case:DIP; No. of Pins:8Pins; Output Current:500mA; Output Voltage Nom.:12V; Switching Frequency:52kHz; RoHS Compliant: Yes | Newark Electronics
  • 8V to 40V, 500mA SIMPLE SWITCHER® buck converter with 4 external components | Texas Instruments
  • Switching controller IC [Texas Instruments] LM2574N-12/NOPB Switching controller IC | Distrelec
  • Texas Instruments LM2574N-12/NOPB Step-Down Anahtarlamalı Regülatör, 500mA, 8-Pinli MDIP, Buck Kontrolör | RS Components TR
  • Step down switching regulator,LM2574N-12 | RS Components IT

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