LM2576T-005G DC-DC Power Conversion by ON Semiconductor

Buck Regulator, Switching, 3.0 A, 15 V

The LM2576 Buck Switching Regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step-down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version. The Buck Switching Regulator is designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2576 are offered by several different inductor manufacturers. Since the LM2576 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced dramatically. 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. The LM2576 features include a guaranteed +/-4% tolerance on output voltage within specified input voltages and output load conditions, and +/-10% on the oscillator frequency (+/-2% over 0C to 125C). External shutdown is included, featuring 80 uA (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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Prices starting from US$1.10

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3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions
Adjustable Version Output Voltage Range, 1.23 to 37 V +/-4% Maximum Over Line and Load Conditions
Guaranteed 3.0 A Output Current
Wide Input Voltage Range
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
Moisture Sensitivity Level (MSL) Equals 1
Pb-Free Packages are Available
Simple High-Efficiency Step-Down (Buck) Regulator
On-Card Switching Regulators
Negative Step-Up Converters
End Products
Efficient Pre-Regulator for Linear Regulators
Positive to Negative Converter (Buck-Boost)
Power Supply for Battery Chargers


Description LM2576, 3.0 A, 5.0 V, 52 kHz
Compliance Pb-free Halide free
Topology Step-Down
Control Mode Voltage Mode
VCC Min (V) 7
VCC Max (V) 40
VO Typ (V) 5
IO Typ (A) 3
Efficiency (%) 85
fSW Typ (kHz) 52
Package Type TO-220-5

Alternative Descriptions

LM2576 Series 40 V 3 A 52 kHz Step-Down Switching Regulator - TO-220-5 | Future Electronics
Step-Down Switching Regulator, 3A, Vin 4÷40V, Vout 5V, 52kHz | Micros
Dc/Dc Conv, Buck, 63Khz, To-220-5 | Newark Electronics
DC/DC CONV, BUCK, 63KHZ, TO-220-5 | element14
3A, 40Vin, Buck Sw Reg, LM2576T-005G | RS
Conv DC-DC Single Inv/Step Down 7V to 40V 5-Pin(5+Tab) TO-220 Rail | Avnet America
3A, 40Vin, Buck Sw Reg, LM2576T-005G | ON Semiconductor LM2576T-005G | RS Americas
Buck-Schaltr. 5V 3A 4,75-40Vi TO220-5 | Schukat Electronic

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LM2576T-005G?

Additional datasheets, footprints and schematics for LM2576T-005G are listed on our Part Details page. You can also find images and similar parts to LM2576T-005G on this page.

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What category does LM2576T-005G fall under?

The LM2576T-005G is listed under Power Management > DC-DC Power Conversion > Converters.

Can I view similar or alternative parts?

You can view similar parts to LM2576T-005G when available in the Converters range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the LM2576T-005G you can contact the distributor directly for product support, shipping queries etc.

Is the LM2576T-005G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for LM2576T-005G have stock available?

Authorised distributors including Future Electronics, Micros, Newark Electronics, element14 and Farnell have stock available or on a lead time for LM2576T-005G.

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