Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)

LM2734Z

ACTIVO

Convertidor reductor de alta frecuencia de 1 A, entrada de 3 a 20 V con una ligera eficiencia de car

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Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 2200 Switching frequency (max) (kHz) 3600 Features Enable, Light Load Efficiency, Pre-Bias Start-Up Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 18 Iq (typ) (µA) 1500 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 2200 Switching frequency (max) (kHz) 3600 Features Enable, Light Load Efficiency, Pre-Bias Start-Up Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 18 Iq (typ) (µA) 1500 Duty cycle (max) (%) 85
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8 WSON (NGG) 6 9 mm² 3 x 3
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 6-pin SOT Package, or 6-Pin WSON Package
  • 3.0-V to 20-V Input Voltage Range
  • 0.8-V to 18-V Output Voltage Range
  • 1-A Output Current
  • 3-MHz Switching Frequency
  • 300-mΩ NMOS Switch
  • 30-nA Shutdown Current
  • 0.8-V, 2% Internal Voltage Reference
  • Internal Soft-Start
  • Current-Mode, PWM Operation
  • Thermal Shutdown
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 6-pin SOT Package, or 6-Pin WSON Package
  • 3.0-V to 20-V Input Voltage Range
  • 0.8-V to 18-V Output Voltage Range
  • 1-A Output Current
  • 3-MHz Switching Frequency
  • 300-mΩ NMOS Switch
  • 30-nA Shutdown Current
  • 0.8-V, 2% Internal Voltage Reference
  • Internal Soft-Start
  • Current-Mode, PWM Operation
  • Thermal Shutdown

The LM2734Z regulator is a monolithic, high-frequency, PWM step-down DC–DC converter assembled in a thick 6-pin SOT and a WSON non-pullback package. The device provides all the active functions to provide local DC–DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components and online design support through WEBENCH™, the LM2734Z is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world class control circuitry allows for ON-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 85% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2734Z uses current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

The LM2734Z regulator is a monolithic, high-frequency, PWM step-down DC–DC converter assembled in a thick 6-pin SOT and a WSON non-pullback package. The device provides all the active functions to provide local DC–DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components and online design support through WEBENCH™, the LM2734Z is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world class control circuitry allows for ON-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 85% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2734Z uses current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

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Documentación técnica

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* Data sheet LM2734Z/-Q1 Thin SOT 1-A Load Step-Down DC-DC Regulator datasheet (Rev. F) PDF | HTML 06 ene 2016

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LM2734ZEVAL — Módulo de evaluación de regulador CC-CC reductor de carga de 1 A en SOT23 delgado

The LM2734 demo board is configured to convert 5V input to 1.8V output at 1A load current using the LM2734X 1.6MHz or the LM2734Y 550kHz step down DC-DC regulator. The tiny low profile thin SOT23 package allows the demo board to be manufactured using less than 1 square inch of a 4-layer printed (...)

Guía del usuario: PDF | HTML
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23-THN (DDC) 6 Ultra Librarian
WSON (NGG) 6 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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