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LM5140RGYR

Dual sync buck controller, 4.5-65V, 1MHz, VQFN-28

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LM5140RGYR

Paquete：

VQFN-28

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Descripción

Productos

The Texas Instruments LM5140RGYR is a Dual sync buck controller, 4.5-65V, 1MHz, VQFN-28. It drives external N-channel MOSFETs for high-efficiency synchronous buck conversion in telecom, industrial, and automotive power systems.

Especificaciones

Input Voltage 4.5-65V
Switching Frequency 1MHz
Paquete VQFN-28

Características

  • External MOSFET drive for design flexibility
  • Current mode control
  • Adjustable switching frequency
  • Power good and enable functions

Aplicaciones

  • Telecom base station power
  • Industrial 24V/48V systems
  • Automotive infotainment power
  • Server and storage power supplies

The LM5140RGYR from Texas Instruments is a synchronous buck controller operating from 4.5-65V input with 1MHz switching frequency in a VQFN-28 package. It drives external N-channel MOSFETs for high-efficiency power conversion in telecom, industrial, and automotive applications.

The controller uses peak current mode control. An error amplifier compares the output voltage feedback with an internal reference. The error signal controls the peak inductor current through a PWM comparator. The high-side gate driver turns on the external high-side MOSFET, and the low-side driver controls the synchronous MOSFET. Adaptive dead-time control prevents shoot-through current.

Pin Nombre Descripción
VIN Input voltage sense Analog input
SW Switch node Potencia
BOOT Bootstrap capacitor Supply
HG High-side gate drive Salida
LG Low-side gate drive Salida
FB Output voltage feedback Analog input
COMP Error amplifier output Analógico
SS Soft-start Analógico
  • 48V telecom to point-of-load conversion
  • Industrial 24V bus to 5V/3.3V regulation
  • Automotive 12V battery to logic power
  • Server VRM multi-phase controller
Modelo Marca Vin Notas
ISL6520CBZ Renesas 5-12V Single output
NCP51111DR2G onsemi 4.5-65V Automotive grade
BD9G341AEFJ-E2 ROHM 7-36V Integrated driver
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Contact Information

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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