Inicio Gestión de la energía AC/DC & DC/DC converters (integrated FET)
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Gestión de la energía
AC/DC & DC/DC converters (integrated FET)

LM26420

ACTIVO

Convertidor CC/CC síncrono doble de alta eficiencia de 2 A

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NUEVO TPS62442 ACTIVO Convertidor reductor doble de 2.75 V a 6 V de 2 A o 3 A y 1 A en encapsulado QFN Next generation dual buck with smaller size wand broader VIN range.

LM26420

ACTIVO
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Detalles del producto

Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 2200 Features Enable, Light Load Efficiency, Light load efficiency, Phase Interleaving, Power good, Pre-Bias Start-Up, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0009
Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 2200 Features Enable, Light Load Efficiency, Light load efficiency, Phase Interleaving, Power good, Pre-Bias Start-Up, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0009
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 WQFN (RUM) 16 16 mm² 4 x 4
  • Compliant with CISPR25 Class 5 Conducted Emissions
  • Input Voltage Range of 3 V to 5.5 V
  • Output Voltage Range of 0.8 V to 4.5 V
  • 2-A Output Current per Regulator
  • High Switching Frequency: 2.2 MHz (LM26420X)
        0.55 MHz (LM26420Y)
  • 0.8 V, 1.5% Internal Voltage Reference
  • Internal Soft Start
  • Independent Power Good and Precision Enable for Each Output
  • Current Mode, PWM Operation
  • Thermal Shutdown
  • Overvoltage Protection
  • Start-up into Prebiased Output Loads
  • Regulators are 180° Out of Phase
  • Create a Custom Design Using the LM26420 With the WEBENCH® Power Designer
  • Compliant with CISPR25 Class 5 Conducted Emissions
  • Input Voltage Range of 3 V to 5.5 V
  • Output Voltage Range of 0.8 V to 4.5 V
  • 2-A Output Current per Regulator
  • High Switching Frequency: 2.2 MHz (LM26420X)
        0.55 MHz (LM26420Y)
  • 0.8 V, 1.5% Internal Voltage Reference
  • Internal Soft Start
  • Independent Power Good and Precision Enable for Each Output
  • Current Mode, PWM Operation
  • Thermal Shutdown
  • Overvoltage Protection
  • Start-up into Prebiased Output Loads
  • Regulators are 180° Out of Phase
  • Create a Custom Design Using the LM26420 With the WEBENCH® Power Designer

The LM26420 regulator is a monolithic, high-efficiency dual PWM step-down DC/DC converter. This device has the ability to drive two 2-A loads with an internal 75-mΩ PMOS top switch and an internal 50-mΩ NMOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.8 V.

Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.

The LM26420 regulator is a monolithic, high-efficiency dual PWM step-down DC/DC converter. This device has the ability to drive two 2-A loads with an internal 75-mΩ PMOS top switch and an internal 50-mΩ NMOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 5.5-V input operating range down to the minimum output voltage of 0.8 V.

Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420 utilizes current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM26420 Dual 2-A, High-Efficiency Synchronous DC/DC Converter datasheet (Rev. L) PDF | HTML 13 abr 2018
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 abr 2021
Technical article Design an automotive cluster power supply PDF | HTML 16 oct 2015
Technical article How to overcome automotive front-end design challenges PDF | HTML 10 sep 2015
Technical article How to design a quiet and compact industrial power supply PDF | HTML 21 jul 2015
Technical article Spread Spectrum: Headache tablet or vitamin pill? PDF | HTML 18 may 2015
White paper Power Management IC (PMIC) Guide for Automotive (Rev. A) 29 oct 2014
EVM User's guide AN-1870 LM26420 Evaluation Board (Rev. B) 24 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

LM26420XMHEVAL — Placa de evaluación de reductor síncrono eTSSOP de 2.2 MHz LM26420

The LM26420 Evaluation board was designed to provide two 2A outputs, VOUT1 and VOUT2 . It is available in either the eTSSOP package option of the LM26420 for easier probing or the LLP version for evaluating the smaller package. The design emphasizes on the compactness of the LM26420 PCB layout and (...)

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

LM26420XSQEVAL — Placa de evaluación de reductor síncrono LLP de 2.2 MHz LM26420

The LM26420 Evaluation board was designed to provide two 2A outputs, VOUT1 and VOUT2 . It is available in either the eTSSOP package option of the LM26420 for easier probing or the LLP version for evaluating the smaller package. The design emphasizes on the compactness of the LM26420 PCB layout and (...)

Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LM26420X PSpice Transient Model

SNVMA16.ZIP (132 KB) - PSpice Model
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Modelo de simulación

LM26420X Unencrypted PSpice Transient Model

SNVMA15.ZIP (5 KB) - PSpice Model
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Modelo de simulación

LM26420Y PSpice Transient Model

SNVMA14.ZIP (140 KB) - PSpice Model
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Modelo de simulación

LM26420Y Unencrypted PSpice Transient Model

SNVMA13.ZIP (5 KB) - PSpice Model
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Diseños de referencia

PMP9458 — Diseño de referencia de fuente de alimentación de 14 W y salida múltiple Clase 5 de CISPR 25 para un

The PMP9458 reference design is a conducted EMI optimized 2-layer board power supply for automotive cluster units. The power supply has two buck regulators in cascaded connection: the first stage buck generates a 5V, 2A output using the LM26003, and the second stage generates two outputs of 2.8V, (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDM-HAHSCPTO — Diseño de referencia de contador de alta velocidad (HSC) y salida del tren de impulsos (TDF) de alta

This reference design provides firmware and test platform for two different industrial input/output functions related to motion control: high-speed counter (HSC) and pulse-train output (PTO). The design is based on a microcontroller platform that is suitable for use in industrial applications (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-01322 — Diseño de referencia de carril sin polarización, de caída baja (LDO) y corriente alta para aplicacio

This reference design demonstrates a low-noise, low-dropout (LDO), high-current power stage with no voltage-bias-rail requirement utilizing the LP5922 LDO linear regulator. The power stage demonstrated is ideal for industrial applications. Within industrial applications, low-noise power is (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

PMP9477 — Fuente de alimentación de salida múltiple Clase 5 de CISPR 25 con precarga para unidad de clúster de

The PMP9477 design is a conducted EMI optimized multi-output power supply for automotive cluster units.  The power supply has a pre-boost stage for cold crank and start-stop operation and two buck regulators.  The pre-boost stage features the LM3481 boost controller and will start to (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9492 — Diseño de referencia de fuente de alimentación de salida múltiple y Clase 5 de CISPR 25 para cámaras

PMP9492 is a conducted EMI optimized (CISPR 25 Class 5) 9 W Multi output Design for  Wide Range Vin automotive ADAS application that supports Cold –Cranking Conditions . The design uses an LM53603 regulator IC (used as Buck), LM26420 (used as dual Buck) and TPS60150 regulator IC (used as (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9462 — Diseño de referencia de convertidor reductor de salida triple, bajo ruido y VIN amplia

The reference design PMP9462 is a single input step-down converter with three low-noise outputs. The module uses LM43603, a synchronous step-down DC-DC converter capable of driving up to 3A of load current from an input voltage ranging 7V to 36V. The 5V output from LM43603 enables the LM26420 which (...)
Test report: PDF
Esquema: PDF
Paquete Pasadores Descargar
HTSSOP (PWP) 20 Ver opciones
WQFN (RUM) 16 Ver opciones
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

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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