LM2576S-12/NOPB Part Information

Details for LM2576S-12/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3-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 fault protection and a fixed-frequency oscillator. The LM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the LM2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a ±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 3-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 TO-263
No. of Pins 5Pins
Output Current 3A
Output Voltage Nom. 12V
Switching Frequency 52kHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
Accuracy % 4%
Base Number 2576
Frequency 52kHz
No. of Outputs 1Outputs
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +125°C
Output Voltage 37V
Output Voltage Max 12V
Primary Input Voltage 25V
Supply Voltage Max 40V
Supply Voltage Min 15V
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)
RoHS Compliant

Alternative Part Descriptions

  • Step-down switching regulator,LM2576S-12 | RS Components
  • STEP-DOWN VOLTAGE REGULATOR, TO-263; Topology:Buck (Step Down); Input Voltage Min:4V; Input Voltage Max:40V; DC / DC Converter IC Case:TO-263 (D2PAK); No. of Pins:5Pins; Output Current:3A; Switching Frequency:52kHz; Product Range:- RoHS Compliant: Yes | Newark Electronics
  • PMIC; DC/DC converter; Uin: 4÷40V; Uout: 12V; TO263-5; buck | Transfer Multisort Elektronik
  • SIMPLE SWITCHER® 40V, 3A Low Component Count Step-Down Regulator | Texas Instruments
  • Switching controller IC [Texas Instruments] LM2576S-12/NOPB Switching controller IC | Distrelec

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