HTC LM2576DP-ADJ

Mfr. Part

LM2576DP-ADJ

Manufacturer

HTC. Y-IC is a quality distributor of HTC products and we will provide you with the best products and services, including fast delivery, reliable sourcing, and strong technical support.

Detailed Description

Adjustable 3 A step-down (buck) switching regulator from the proven LM2576 family

Input range typically 4.5 V to 40 V; adjustable output from about 1.23 V up to near input (allowing for duty-cycle limits)

Fixed 52 kHz switching frequency for simple filtering and predictable design

Integrated power switch, thermal shutdown, and current limiting reduce external parts count

Main Category: Integrated Circuits (ICs); Small Classification: Specialized ICs (switching regulator)

Current stock: 17,700 pcs; Date/Lot Code: 2146; Package/Case code: 1733 (see Packaging)

Key Features

3 A guaranteed output current

Wide 4.5–40 V input operating range

Adjustable output 1.23 V to ~37 V

Fixed 52 kHz frequency

High efficiency up to ~90% with proper inductor/diode selection

Internal thermal shutdown and current limit for protection

ON/OFF (enable) control pin for low-power standby

Simple design needs only an inductor, catch diode, and input/output capacitors

Compatible with standard inductors and Schottky diodes

Available in space-saving TO-263-5 (D2PAK) surface-mount package (DP suffix)

Key Advantages

Fast design-in with few external parts saves time and BOM cost

Wide input tolerance fits automotive and industrial supplies

Proven, robust topology with stable operation across loads

Built-in protections increase system reliability

Broad second-source ecosystem for supply chain flexibility

Cost-effective 3 A DC/DC solution without external MOSFETs

Straightforward PCB layout and thermal management

Packaging

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Key Features

3 A guaranteed output current

Wide 4.5–40 V input operating range

Adjustable output 1.23 V to ~37 V

Fixed 52 kHz frequency

High efficiency up to ~90% with proper inductor/diode selection

Internal thermal shutdown and current limit for protection

ON/OFF (enable) control pin for low-power standby

Simple design needs only an inductor, catch diode, and input/output capacitors

Compatible with standard inductors and Schottky diodes

Available in space-saving TO-263-5 (D2PAK) surface-mount package (DP suffix)

Key Advantages

Fast design-in with few external parts saves time and BOM cost

Wide input tolerance fits automotive and industrial supplies

Proven, robust topology with stable operation across loads

Built-in protections increase system reliability

Broad second-source ecosystem for supply chain flexibility

Cost-effective 3 A DC/DC solution without external MOSFETs

Straightforward PCB layout and thermal management

Packaging

Package type: TO-263-5 (D2PAK, surface-mount) for DP suffix; molded epoxy over copper leadframe

Package/case code: 1733 (per received stock)

Approximate body size: 10.1 mm × 9.7 mm; height ~4.8 mm (typical for D2PAK)

Leads: 5 pins plus large exposed tab for heat spreading

Typical pin order (verify with the HTC datasheet):

1 VIN (input)

2 OUTPUT (switch node)

3 GND

4 FEEDBACK (VFB)

5 ON/OFF (enable)

Tab Exposed pad, commonly tied to GND for thermal performance

Materials: RoHS-compliant epoxy molding compound and Sn-plated copper leads (see datasheet/CoC for lot specifics)

Thermal notes:

- Low junction-to-case thermal resistance through the tab

- Junction-to-ambient strongly depends on PCB copper area under the tab

- Integrated thermal shutdown protects against overheating

High-level electrical properties:

- Switching frequency ~52 kHz

- Reference voltage ~1.23 V

- Output current up to 3 A

- Operating junction range typically -40°C to +125°C

Shipment packing: Tape-and-Reel for TO-263-5; standard JEDEC reel specs (contact Y-IC for reel count/width)

Inventory detail: 17,700 pcs available; Date/Lot Code 2146

Lifecycle

Status: The LM2576 family is widely used and generally available. No broad end-of-life notice is commonly associated with this family, though status can vary by manufacturer and package. For the latest HTC-specific lifecycle and supply status, check with Y-IC sales.

Pin-to-pin or second-source equivalents (adjustable, 3 A buck; verify before drop-in):

- Texas Instruments LM2576S-ADJ (TO-263-5), LM2576T-ADJ (TO-220-5)

- onsemi LM2576S-ADJ

- Unisonic Technologies (UTC) LM2576S-ADJ / LM2576K-ADJ

- XL Semi XL2576-ADJ (D2PAK/TO-220 variants)

- HTC LM2576T-ADJ (TO-220-5 version)

Higher-frequency or enhanced alternatives (may need re-comp/design/layout changes):

- TI LM2596-ADJ (150 kHz, 3 A), TI LM2678-ADJ (260 kHz, 5 A)

- onsemi NCV2576-ADJ (automotive-grade)

- Microchip MIC4576-ADJ (200 kHz, up to 3 A)

- ST L5973/L4973 series (various ratings)

If you need exact pin-compatibility confirmation or more cross options, contact our sales team on the Y-IC website for tailored advice.

Key Application Areas

Automotive 12 V/24 V to 5 V/3.3 V/other logic rails

Industrial control, PLCs, sensors, HMIs, data loggers

Communications equipment, routers, gateways, set-top boxes

Consumer and embedded power rails

Lead-acid battery chargers and portable power adapters

LED drivers using buck topology with current-sense adaptations

Test and measurement equipment auxiliary supplies

Building automation, security, and access control systems

Motor control and gate driver auxiliary rails

Datasheet

Y-IC hosts the most authoritative datasheet for LM2576DP-ADJ on the current product page. Download it here to get the latest specifications, pinouts, thermal guidance, and application notes.

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