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LM43603-Q1

ACTIVO

Convertidor de tensión reductor síncrono de 3.5 V a 36 V y 3 A apto para automoción

Se encuentra disponible una versión más nueva de este producto

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Detalles del producto

Rating Automotive Topology Buck Iout (max) (A) 3 Vin (max) (V) 36 Vin (min) (V) 3.5 Vout (max) (V) 28 Vout (min) (V) 1 Features Adjustable soft start, Enable, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Synchronous rectification, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000027 Duty cycle (max) (%) 99
Rating Automotive Topology Buck Iout (max) (A) 3 Vin (max) (V) 36 Vin (min) (V) 3.5 Vout (max) (V) 28 Vout (min) (V) 1 Features Adjustable soft start, Enable, Frequency synchronization, Light-load efficiency, Overcurrent protection, Power good, Prebias startup, Synchronous rectification, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000027 Duty cycle (max) (%) 99
HTSSOP (PWP) 16 32 mm² (5 mm × 6.4 mm)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Operating Junction Temperature
  • 27-µA Quiescent Current in Regulation
  • High Efficiency at Light Load (DCM and PFM)
  • Meets EN55022/CISPR 22 EMI Standards
  • Integrated Synchronous Rectification
  • Adjustable Frequency Range: 200 kHz to 2.2 MHz (500 kHz default)
  • Frequency Synchronization to External Clock
  • Internal Compensation
  • Stable With Almost any Combination of Ceramic, Polymer, Tantalum, and Aluminum Capacitors
  • Power-Good Flag
  • Soft Start into a Pre-Biased Load
  • Internal Soft Start: 4.1 ms
  • Extendable Soft-Start Time by External Capacitor
  • Output Voltage Tracking Capability
  • Precision Enable to a Program System UVLO
  • Output Short Circuit Protection with Hiccup Mode
  • Overtemperature Thermal Shutdown Protection
  • Create a Custom Design Using the LM43603-Q1 With the WEBENCH® Power Designer
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Operating Junction Temperature
  • 27-µA Quiescent Current in Regulation
  • High Efficiency at Light Load (DCM and PFM)
  • Meets EN55022/CISPR 22 EMI Standards
  • Integrated Synchronous Rectification
  • Adjustable Frequency Range: 200 kHz to 2.2 MHz (500 kHz default)
  • Frequency Synchronization to External Clock
  • Internal Compensation
  • Stable With Almost any Combination of Ceramic, Polymer, Tantalum, and Aluminum Capacitors
  • Power-Good Flag
  • Soft Start into a Pre-Biased Load
  • Internal Soft Start: 4.1 ms
  • Extendable Soft-Start Time by External Capacitor
  • Output Voltage Tracking Capability
  • Precision Enable to a Program System UVLO
  • Output Short Circuit Protection with Hiccup Mode
  • Overtemperature Thermal Shutdown Protection
  • Create a Custom Design Using the LM43603-Q1 With the WEBENCH® Power Designer

The LM43603-Q1 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 3 A of load current from an input voltage ranging from 3.5 V to 36 V (42 V absolute maximum). The LM43603-Q1 provides exceptional efficiency, output accuracy, and dropout voltage in a very small solution size. An extended family is available in 0.5-A, 1-A, and 2-A load current options in pin-to-pin compatible packages. Peak current mode control is employed to achieve simple control loop compensation and cycle-by-cycle current limiting. Optional features such as programmable switching frequency, synchronization, power-good flag, precision enable, internal soft-start, extendable soft start, and tracking provide a flexible and easy to use platform for a wide range of applications. Discontinuous conduction and automatic frequency modulation at light loads improve light load efficiency. The family requires few external components and pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCC undervoltage lockout, cycle-by-cycle current limit, and output short circuit protection. The LM43603-Q1 device is available in the HTSSOP (PWP) 16-pin leaded package (6.6 mm × 5.1 mm × 1.2 mm). The LM43603A-Q1 version is optimized for PFM operation and recommended for new design. The device is pin-to-pin compatible with LM4360x and LM4600x family.

The LM43603-Q1 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 3 A of load current from an input voltage ranging from 3.5 V to 36 V (42 V absolute maximum). The LM43603-Q1 provides exceptional efficiency, output accuracy, and dropout voltage in a very small solution size. An extended family is available in 0.5-A, 1-A, and 2-A load current options in pin-to-pin compatible packages. Peak current mode control is employed to achieve simple control loop compensation and cycle-by-cycle current limiting. Optional features such as programmable switching frequency, synchronization, power-good flag, precision enable, internal soft-start, extendable soft start, and tracking provide a flexible and easy to use platform for a wide range of applications. Discontinuous conduction and automatic frequency modulation at light loads improve light load efficiency. The family requires few external components and pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VCC undervoltage lockout, cycle-by-cycle current limit, and output short circuit protection. The LM43603-Q1 device is available in the HTSSOP (PWP) 16-pin leaded package (6.6 mm × 5.1 mm × 1.2 mm). The LM43603A-Q1 version is optimized for PFM operation and recommended for new design. The device is pin-to-pin compatible with LM4360x and LM4600x family.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM43603-Q1 3.5-V to 36-V, 3-A Synchronous Step-Down Voltage Converter datasheet (Rev. C) PDF | HTML 20/10/2017
Nota sobre la aplicación Differences Between LM4600x/LM4360x A and Non-A OPNs 27/03/2018
Artículo técnico A complete low-voltage backup battery solution for eCall systems PDF | HTML 5/03/2016
Artículo técnico Overcoming automotive cluster power supply design challenges PDF | HTML 13/11/2015
Nota sobre la aplicación Inverting Applications Made SIMPLE With LM4600x and LM4360x (Rev. B) 20/02/2015
Nota sobre la aplicación Thermal Design Made Simple With LM43603 and LM46002 15/09/2014
Nota sobre la aplicación Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 12/09/2014
Nota sobre la aplicación Compensation Made SIMPLE With LM4360x, LM4600x 29/07/2014
Nota sobre la aplicación Automotive Line Transient Protection Circuit 1/07/2014
Nota sobre la aplicación AN-1197 Selecting Inductors for Buck Converters (Rev. B) 23/04/2013

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

LM43603PWPEVM — Módulo de evaluación del convertidor reductor síncrono LM43603PWP

The LM43603PWPEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM43603PWP synchronous step-down converter. The EVM operates from an 3.5V to 36V input and provides a 3.3V output at 3A.

Guía del usuario: PDF
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Modelo de simulación

LM43603 Non-Inverting and Inverting PSpice Transient Model (Rev. A)

SNVM585A.ZIP (525 KB) - Modelo PSpice
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LM43603 Non-Inverting and Inverting Unencrypted PSpice Transient Model (Rev. A)

SNVM717A.ZIP (6 KB) - Modelo PSpice
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Modelo de simulación

LM43603 PSpice Average Model

SNVM572.ZIP (76 KB) - Modelo PSpice
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Modelo de simulación

LM43603 TINA-TI Transient Reference Design

SNVM609.TSC (88 KB) - Diseño de referencia TINA-TI
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Modelo de simulación

LM43603 TINA-TI Transient Spice Model

SNVM605.ZIP (52 KB) - Modelo TINA-TI Spice
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Modelo de simulación

LM43603 Unencrypted PSpice Average Model

SNVM724.ZIP (1 KB) - Modelo PSpice
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Diseño de referencia

PMP9769 — Diseño de referencia de fuente de alimentación eCall para automoción con baja tensión intermedia

Este diseño de referencia incluye una solución completa de administración de potencia para un sistema de llamada de emergencia (eCall) independiente en un entorno automotriz. El circuito se suministra directamente desde el carril de la batería del vehículo. También gestiona una batería de reserva (...)

Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 16 Ultra Librarian

Pedidos y calidad

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