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LM2576T-12

3A step-down switching regulator, fixed 12V output, 150kHz, TO-220-5

11250

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Pieza del fabricante：

LM2576T-12

Paquete：

TO-220-5 (5-lead, 10.16 x 4.55 x 9.28 mm)

Marca：
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Compromiso de calidad
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Descripción

Productos

The LM2576T-12 from Texas Instruments is a SIMPLE SWITCHER step-down voltage regulator providing a fixed 12V output at up to 3A load current. It integrates all active functions including a 150kHz fixed-frequency oscillator, voltage reference, and power switch into a single TO-220-5 package. Requiring only four external components, it offers a simple and cost-effective buck converter solution.

Especificaciones

Output Voltage 12V (Fixed)
Corriente de salida 3A
Input Voltage Range 15V to 40V
Switching Frequency 150 kHz (fixed)
Efficiency Up to 88%
Standby Current 50uA typical
Temperatura de funcionamiento -40 to 125°C
Paquete TO-220-5

Características

  • 3A output current capability
  • Fixed 12V output with 2% tolerance
  • 150kHz fixed-frequency internal oscillator
  • Requires only 4 external components
  • Shutdown mode reduces quiescent current to 50uA
  • Built-in thermal shutdown and current limit protection
  • Wide input voltage range up to 40V

Aplicaciones

  • Simple buck (step-down) power converters
  • On-card switching regulators
  • Battery-powered voltage conversion
  • Automotive and industrial power supplies
  • Positive-to-negative converter circuits

The LM2576T-12 from TI is a SIMPLE SWITCHER step-down voltage regulator providing a fixed 12V output at up to 3A. It integrates a 150kHz oscillator, voltage reference, and power switch, requiring only four external components. Protection features include thermal shutdown, current limiting, and a shutdown pin that reduces quiescent current to 50uA.

The LM2576T-12 uses a fixed-frequency buck converter topology. The internal NPN Darlington power switch connects VIN to the output inductor at 150kHz. The error amplifier and PWM controller adjust the duty cycle to maintain 12V regulation. When the switch turns off, the catch diode provides a return path for inductor current. The shutdown pin disables the oscillator and power switch.

Pin Nombre Tipo Función
1 VIN Potencia Input supply voltage
2 Salida Salida Switch output to inductor
3 GND Suelo Ground (thermal tab)
4 Feedback Entrada Output voltage sense
5 ON/OFF Entrada Shutdown control (low=ON)
  • 12V power bus generation from 24V or 36V industrial supplies
  • Automotive 12V regulated output from battery
  • Simple step-down converters for industrial equipment
  • Battery-powered devices requiring efficient conversion
  • Positive-to-negative (inverting) buck-boost configurations
Fabricante Número de pieza Paquete Notas
TI LM2576T-12/NOPB TO-220-5 Pb-free version
TI LM2576HV-12 TO-220-5 High-voltage (60V input)
onsemi NCV2576D2T12G D2PAK-5 Automotive AEC-Q100
TI LM2676T-12 TO-220-7 260kHz, higher efficiency
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Servicio y embalaje

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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