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

LM2734

ACTIVO

Convertidor reductor de 1 A con entrada de 3 V a 20 V y eficiencia de carga ligera

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Funcionalidad similar a la del dispositivo comparado
TPS62932 ACTIVO Convertidor reductor síncrono con entrada de 3.8 V a 30 V, 2 A, 200 kHz a 2.2 MHz y bajo IQ en encap Higher efficiency with lower IQ and wider VIN in a smaller package.

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) 400 Switching frequency (max) (kHz) 1900 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) 2100 Duty cycle (max) (%) 96
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) 400 Switching frequency (max) (kHz) 1900 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) 2100 Duty cycle (max) (%) 96
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • Thin SOT-6 Package
  • 3-V to 20-V Input Voltage Range
  • 0.8-V to 18-V Output Voltage Range
  • 1-A Output Current
  • 550-kHz (LM2734Y) and 1.6-MHz (LM2734X) Switching Frequencies
  • 300-mΩ NMOS Switch
  • 30-nA Shutdown Current
  • 0.8-V, 2% Internal Voltage Reference
  • Internal Soft Start
  • Current-Mode, PWM Operation
  • Thermal Shutdown
  • Create a Custom Design Using the LM2734 With WEBENCH® Power Designer
  • Thin SOT-6 Package
  • 3-V to 20-V Input Voltage Range
  • 0.8-V to 18-V Output Voltage Range
  • 1-A Output Current
  • 550-kHz (LM2734Y) and 1.6-MHz (LM2734X) Switching Frequencies
  • 300-mΩ NMOS Switch
  • 30-nA Shutdown Current
  • 0.8-V, 2% Internal Voltage Reference
  • Internal Soft Start
  • Current-Mode, PWM Operation
  • Thermal Shutdown
  • Create a Custom Design Using the LM2734 With WEBENCH® Power Designer

The LM2734 regulator is a monolithic, high-frequency, PWM step-down DC/DC converter in a 6-pin Thin SOT 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 LM2734 regulator 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 550 kHz (LM2734Y) or 1.6 MHz (LM2734X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA.

The LM2734 regulator 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 LM2734 regulator is a monolithic, high-frequency, PWM step-down DC/DC converter in a 6-pin Thin SOT 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 LM2734 regulator 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 550 kHz (LM2734Y) or 1.6 MHz (LM2734X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA.

The LM2734 regulator 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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LM2734Z ACTIVO Convertidor reductor de alta frecuencia de 1 A, entrada de 3 a 20 V con una ligera eficiencia de car Higher frequency 3 MHz with non sync

Documentación técnica

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Tipo Título Fecha
* Data sheet LM2734 Thin SOT 1-A Load Step-Down DC/DC Regulator datasheet (Rev. K) PDF | HTML 23 ago 2018
User guide LM2734 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 17 dic 2021
User guide High-IF Sub-sampling Receiver Subsystem User Guide 27 ene 2012
Application note Advanced Topics in Powering FPGAs 22 mar 2007
Application note Power Management Considerations for FPGAs and ASICs 22 mar 2007

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

LM2734X-EVAL — Módulo de evaluación de regulador CC-CC reductor de carga de 1 A en SOT23 delgado

LM2734 Thin SOT-23 1A Load Step-Down DC-DC Regulator

Guía del usuario: PDF | HTML
Modelo de simulación

LM2734X PSpice Average Model (Rev. A)

SNVM136A.ZIP (51 KB) - PSpice Model
Modelo de simulación

LM2734X PSpice Transient Model

SNVM149.ZIP (201 KB) - PSpice Model
Modelo de simulación

LM2734X Unencrypted PSpice Average Model

SNVM836.ZIP (1 KB) - PSpice Model
Modelo de simulación

LM2734X Unencrypted PSpice Transient Model

SNVM835.ZIP (2 KB) - PSpice Model
Modelo de simulación

LM2734Y PSpice Average Model (Rev. A)

SNVM098A.ZIP (51 KB) - PSpice Model
Modelo de simulación

LM2734Y PSpice Transient Model

SNVM100.ZIP (195 KB) - PSpice Model
Modelo de simulación

LM2734Y Unencrypted PSpice Average Model

SNVM834.ZIP (1 KB) - PSpice Model
Modelo de simulación

LM2734Y Unencrypted PSpice Transient Model

SNVM837.ZIP (2 KB) - PSpice Model
Símbolo CAD/CAE

High-IF Sub-sampling Receiver Subsystem CAD Files

SNAC012.ZIP (3259 KB)
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23-THN (DDC) 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

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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