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

LMR14030

ACTIVO

Regulador reductor SIMPLE SWITCHER® de 40 V, 3,5 A, 2,2 MHz con IQ de 40 uA

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LMR33630 ACTIVO Convertidor buck síncrono SIMPLE SWITCHER® de 3,8 V a 36 V, 3 A con EMI ultrabaja Smaller footprint, higher efficiency, lower IQ and lower EMI.

LMR14030

ACTIVO
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Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 4 Vin (max) (V) 40 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 36 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3.5 Vin (min) (V) 4 Vin (max) (V) 40 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 1 Vout (max) (V) 36 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 4 V to 40 V Input Range
  • 3.5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package
  • 4 V to 40 V Input Range
  • 3.5 A Continuous Output Current
  • Ultra-low 40 µA Operating Quiescent Current
  • 90 mΩ High-Side MOSFET
  • Minimum Switch-On Time: 75 ns
  • Current Mode Control
  • Adjustable Switching Frequency from 200 kHz to
    2.5 MHz
  • Frequency Synchronization to External Clock
  • Internal Compensation for Ease of Use
  • High Duty Cycle Operation Supported
  • Precision Enable Input
  • 1 µA Shutdown Current
  • External Soft-start
  • Thermal, Overvoltage and Short Protection
  • 8-Pin HSOIC with PowerPAD™ Package

The LMR14030 is a 40 V, 3.5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.

The LMR14030 is a 40 V, 3.5 A step down regulator with an integrated high-side MOSFET. With a wide input range from 4 V to 40 V, it’s suitable for various applications from industrial to automotive for power conditioning from unregulated sources. The regulator’s quiescent current is 40 µA in Sleep-mode, which is suitable for battery powered systems. An ultra-low 1 µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.
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LMR33640 ACTIVO Convertidor reductor SIMPLE SWITCHER® de 3,8 V a 36 V, 4 A en paquete SOIC 8 Next-generation 3.8-V to 36-V, 4-A step-down converter in SOIC-8 package.
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Documentación técnica

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* Data sheet LMR14030 SIMPLE SWITCHER® 40 V 3.5 A, 2.2 MHz Step-Down Converter with 40 µA IQ datasheet (Rev. A) PDF | HTML 09 abr 2015
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 abr 2024
Application note Simple Solution for EMI Filter Stability Issue in DC/DC Converters (Rev. A) 25 abr 2019
Application note How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) 29 mar 2019
Application note How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters 27 abr 2018
Application note Design Feedforward Capacitor for LMR14020 20 dic 2017
Application note How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter 20 sep 2017
Application note Extending Buck Regulator to Positive Buck-Boost Configuration 02 sep 2017
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24 abr 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 abr 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23 abr 2013
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 may 2004

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

LMR14030SEVM — Módulo de evaluación del convertidor reductor LMR14030S

The LMR14030SEVM is a fully assembled and tested circuit for evaluating the LMR14030S Step-Down Converter. The LMR14030SEVM operates from 7V to 36V input (12V nominal) and provides a 5.0V or 3.3V output at 3.5A. The board also has jumper connectors to enable or disable the converter operation, (...)

Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

TPS254900AQ1EVM — Módulo de evaluación TPS254900A-Q1 con regulador de bajada de 3.5 A LMR14030

The TPS254900AQ1 evaluation module (TPS254900AQ1EVM) contains evaluation and reference circuitry for the TPS254900AQ1, which is a USB charging controller and power switch, integrated VBUS and D+/D- short to battery protection, cable compensation, current monitor (IMON) and IEC ESD protection, which (...)
Guía del usuario: PDF
No disponible en TI.com
Placa de evaluación

TPS254900Q1EVM-817 — TPS254900Q1 con módulo de evaluación de regulador de bajada de 3.5 A LMR14030

The TPS254900-Q1 evaluation module (TPS254900Q1EVM-817) contains evaluation and reference circuitry for the TPS254900-Q1, which is a USB charging controller and power switch, integrated VBUS and D+/D- short to battery protection, cable compensation, current monitor (IMON) and IEC ESD protection, (...)
Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LMR14030S PSPICE Transient Model

SNVM707.ZIP (61 KB) - PSpice Model
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Modelo de simulación

LMR14030S PSpice Average Model

SNVMBD5.ZIP (72 KB) - PSpice Model
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Modelo de simulación

LMR14030S Unencrypted PSpice Transient Model

SNVM922.ZIP (6 KB) - PSpice Model
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Diseños de referencia

PMP11594 — Diseño de referencia de cargador USB tipo C™ DFP 5V3A

The PMP11594 is a low cost 5V3A charger reference design which provides Type C DFP feature and is compliant with BC1.2 device.  The design includes a non-synchronous step-down regulator LMR14030 and highly integrated USB type-C controller TPS25810. The PMP11594 demonstrates high efficiency, (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-00845 — Diseño de referencia de hub USB 2.0 de calidad automotriz de dos puertos con protección contra corto

TIDA-00845 is a dual-port USB 2.0 hub with the ability to withstand a short of up to 18-V DC on both downstream ports, as well as Level 4 IEC 61000-4-2 ESD protection, overcurrent conditions, and shorts to ground. This protection is provided by an integrated protection device - the (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-03026 — Diseño de referencia de indicación de estado con LED y retroalimentación de audio

The TIDA-03026 reference design functionality emulates status indication subsystems in various end equipments. By putting multiple LED drivers in parallel, an array of RGB LEDs can be synchronized to blink, pulse, and breathe - enhancing customer experience. Audio feedback is also integrated (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-00376 — Diseño de referencia de notificación con luz estroboscópica de altavoz piezoeléctrico

TIDA-00376 uses our industrial piezo driver, flash LED driver and the ultra-low-power FRAM microcontroller (MCU) to demonstrate the implementation of both audible and visual notification subsystems primarily intended for fire alert end-equipment systems. This reference design demonstrates (...)
Guía del usuario: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HSOIC (DDA) 8 Ultra Librarian
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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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