LM2576T-ADJ/LF03 Part Information
Details for LM2576T-ADJ/LF03 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.
Part Downloads
Download PCB Footprint from Ultra Librarian
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 |
| No. of Outputs | 1Outputs |
| DC / DC Converter IC Case | TO-220 |
| No. of Pins | 5Pins |
| Output Current | 3A |
| Output Voltage Min | 1.23V |
| Output Voltage Max | 37V |
| Switching Frequency | 52kHz |
| Operating Temperature Max | 125°C |
| Product Range | - |
| Automotive Qualification Standard | - |
| RoHS Phthalates Compliant | Yes |
| MSL | - |
| SVHC | No SVHC (27-Jun-2018) |
| Adjustable Output Voltage Min | 1.23V |
| Frequency | 52kHz |
| Operating Temperature Min | -40°C |
| Output Voltage | 37V |
| Primary Input Voltage | 40V |
| Supply Voltage Min | 4V |
| Termination Type | Through Hole |
| Voltage Regulator Type | Step Down (Buck) |
Alternative Part Descriptions
- IC, DC/DC CONVERTOR, 52KHZ, TO220-5; Topology:Buck (Step Down); Input Voltage Min:4V; Input Voltage Max:40V; No. of Outputs:1Outputs; DC / DC Converter IC Case:TO-220; No. of Pins:5Pins; Output Current:3A; Output Voltage Min:1.23V; RoHS Compliant: Yes | Newark Electronics
- Conv DC-DC Single Inv/Step Down 4V to 40V 5-Pin(5+Tab) TO-220 Rail | Avnet America
- SIMPLE SWITCHER® 40V, 3A Low Component Count Step-Down Regulator | Texas Instruments
- Switching Regulator IC [Texas Instruments] LM2576T-ADJ/LF03 Switching Regulator IC | Distrelec