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

LM27342-Q1

ACTIVO

Regulador reductor de amplio rango de entrada de 2 A con sincronización de frecuencia

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Detalles del producto

Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 1750 Switching frequency (max) (kHz) 2300 Features Light Load Efficiency Control mode current mode Vout (min) (V) 1 Vout (max) (V) 18 Iq (typ) (µA) 2400 Duty cycle (max) (%) 93
Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 1750 Switching frequency (max) (kHz) 2300 Features Light Load Efficiency Control mode current mode Vout (min) (V) 1 Vout (max) (V) 18 Iq (typ) (µA) 2400 Duty cycle (max) (%) 93
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9
  • Space-Saving, 3 mm × 3 mm 10-Pin WSON and MSOP-PowerPAD Packages
  • Wide Input Voltage Range: 3 V to 20 V
  • Wide Output Voltage Range: 1 V to 18 V
  • LM27341 Delivers 1.5-A Maximum Output Current
  • LM27342 Delivers 2-A Maximum Output Current
  • High Switching Frequency: 2 MHz
  • Frequency Synchronization:
    1 MHz < fSW < 2.35 MHz
  • 150-mΩ NMOS Switch With Internal Bootstrap Supply
  • 70-nA Shutdown Current
  • Internal Voltage Reference Accuracy of 1%
  • Peak Current-Mode, PWM Operation
  • Thermal Shutdown
  • LM27341-Q1 and LM27342-Q1 are AEC-Q100 Grade 1 Qualified and Manufactured on an Automotive Grade Flow
  • Space-Saving, 3 mm × 3 mm 10-Pin WSON and MSOP-PowerPAD Packages
  • Wide Input Voltage Range: 3 V to 20 V
  • Wide Output Voltage Range: 1 V to 18 V
  • LM27341 Delivers 1.5-A Maximum Output Current
  • LM27342 Delivers 2-A Maximum Output Current
  • High Switching Frequency: 2 MHz
  • Frequency Synchronization:
    1 MHz < fSW < 2.35 MHz
  • 150-mΩ NMOS Switch With Internal Bootstrap Supply
  • 70-nA Shutdown Current
  • Internal Voltage Reference Accuracy of 1%
  • Peak Current-Mode, PWM Operation
  • Thermal Shutdown
  • LM27341-Q1 and LM27342-Q1 are AEC-Q100 Grade 1 Qualified and Manufactured on an Automotive Grade Flow

The LM2734x and LM2734x-Q1 regulators are monolithic, high-frequency, PWM step-down DC-DC converters in 10-pin WSON and 10-pin MSOP-PowerPAD packages. They contain 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, the LM2734x and LM2734x-Q1 are easy to use. The ability to drive 1.5-A or 2-A loads respectively, with an internal 150-mΩ NMOS switch results in the best power density available. The world-class control circuitry allows for on-times as low as 65 ns, thus supporting exceptionally high frequency conversion. Switching frequency is internally set to 2 MHz and synchronizable from 1 to 2.35 MHz, which allows the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 90% are easy to achieve. External shutdown is included, which features an ultra-low shutdown current of 70 nA. The LM2734x and LM2734x-Q1 use peak 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 LM2734x and LM2734x-Q1 regulators are monolithic, high-frequency, PWM step-down DC-DC converters in 10-pin WSON and 10-pin MSOP-PowerPAD packages. They contain 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, the LM2734x and LM2734x-Q1 are easy to use. The ability to drive 1.5-A or 2-A loads respectively, with an internal 150-mΩ NMOS switch results in the best power density available. The world-class control circuitry allows for on-times as low as 65 ns, thus supporting exceptionally high frequency conversion. Switching frequency is internally set to 2 MHz and synchronizable from 1 to 2.35 MHz, which allows the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 90% are easy to achieve. External shutdown is included, which features an ultra-low shutdown current of 70 nA. The LM2734x and LM2734x-Q1 use peak 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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Tipo Título Fecha
* Data sheet LM2734x and LM2734x-Q1 2-MHz, 1.5-A or 2-A, Wide Input Range, Step-Down, DC-DC Regulator With Frequency Synchronization datasheet (Rev. F) PDF | HTML 12 sep 2016
User guide LM27341 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 17 dic 2021
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23 abr 2013
Application note AN-1973 Benefits and Challenges of High-Frequency Regulators (Rev. A) 23 abr 2013

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

LM27342MYEVAL — Regulador reductor de entrada amplia de 2 A y 2 MHz LM27342MY (eMSOP de 10 pines) con EVM de sincron

The LM27342 demonstration board is designed to provide the power supply design engineer with a fully functional regulator design which can be synchronized to an external clock between 1000 kHz and 2350 kHz. The evaluation board provides a 3.3V output with a 2A current capability. The wide input (...)

Guía del usuario: PDF | HTML
Modelo de simulación

LM27342 PSpice Transient Model

SNVM222.ZIP (166 KB) - PSpice Model
Modelo de simulación

LM27342 Unencrypted PSpice Transient Model

SNVMAV5.ZIP (2 KB) - PSpice Model
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HVSSOP (DGQ) 10 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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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.

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