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

LM20123

ACTIVO

Regulador reductor síncrono de modo de corriente de 3 A y 2.95-5.5 V con grado de automoción opciona

Se encuentra disponible una versión más nueva de este producto

open-in-new Comparar alternativas
Este producto sigue estando disponible para los clientes existentes. Los nuevos diseños deben considerar un producto alternativo.
Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
TPS62813-Q1 ACTIVO Convertidor reductor de 2.75 V a 6 V y 3 A con FSW fijo y SINCRONIZACIÓN en flancos mojables de 2 mm Improved performance: Fixed-frequency, spread-spectrum in smaller 2-mm x 3-mm QFN with wettable flanks.

Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 1500 Features Adjustable current limit, Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 5 Iq (typ) (µA) 3500 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 2.95 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 1500 Features Adjustable current limit, Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 5 Iq (typ) (µA) 3500 Duty cycle (max) (%) 85
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • LM20123Q is AEC-Q100 Qualified and Manufactured on an Automotive Grade Flow
  • Input Voltage Range 2.95V to 5.5V
  • Accurate Current Limit Minimizes Inductor Size
  • 96% Efficiency with 1.5 MHz Switching Frequency
  • 32 mΩ Integrated FET Switches
  • Starts up into Pre-Biased Loads
  • Output Voltage Tracking
  • Peak Current Mode Control
  • Adjustable Output Voltage Down to 0.8V
  • Adjustable Soft-Start with External Capacitor
  • Precision Enable Pin with Hysteresis
  • Integrated OVP, UVLO, Power Good and Thermal Shutdown
  • HTSSOP (16-Pins) Exposed Pad Package

All trademarks are the property of their respective owners.

  • LM20123Q is AEC-Q100 Qualified and Manufactured on an Automotive Grade Flow
  • Input Voltage Range 2.95V to 5.5V
  • Accurate Current Limit Minimizes Inductor Size
  • 96% Efficiency with 1.5 MHz Switching Frequency
  • 32 mΩ Integrated FET Switches
  • Starts up into Pre-Biased Loads
  • Output Voltage Tracking
  • Peak Current Mode Control
  • Adjustable Output Voltage Down to 0.8V
  • Adjustable Soft-Start with External Capacitor
  • Precision Enable Pin with Hysteresis
  • Integrated OVP, UVLO, Power Good and Thermal Shutdown
  • HTSSOP (16-Pins) Exposed Pad Package

All trademarks are the property of their respective owners.

The LM20123 is a full featured 1.5 MHz synchronous buck regulator capable of delivering up to 3A of continuous output current. The current mode control loop can be compensated to be stable with virtually any type of output capacitor. For most cases, compensating the device only requires two external components, providing maximum flexibility and ease of use. The device is optimized to work over the input voltage range of 2.95V to 5.5V making it suited for a wide variety of low voltage systems.

The device features internal over voltage protection (OVP) and over current protection (OCP) circuits for increased system reliability. A precision enable pin and integrated UVLO allows the turn on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable Soft-Start circuit. Fault detection and supply sequencing is possible with the integrated power good circuit.

The LM20123 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track a higher voltage rail using the SS/TRK pin. If the output of the LM20123 is pre-biased at startup it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin.

The LM20123 is offered in a 16-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heatsinks.

The LM20123 is a full featured 1.5 MHz synchronous buck regulator capable of delivering up to 3A of continuous output current. The current mode control loop can be compensated to be stable with virtually any type of output capacitor. For most cases, compensating the device only requires two external components, providing maximum flexibility and ease of use. The device is optimized to work over the input voltage range of 2.95V to 5.5V making it suited for a wide variety of low voltage systems.

The device features internal over voltage protection (OVP) and over current protection (OCP) circuits for increased system reliability. A precision enable pin and integrated UVLO allows the turn on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable Soft-Start circuit. Fault detection and supply sequencing is possible with the integrated power good circuit.

The LM20123 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track a higher voltage rail using the SS/TRK pin. If the output of the LM20123 is pre-biased at startup it will not sink current to pull the output low until the internal soft-start ramp exceeds the voltage at the feedback pin.

The LM20123 is offered in a 16-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heatsinks.

Descargar Ver vídeo con transcripción Video

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 5
Tipo Título Fecha
* Data sheet LM20123/LM20123Q 3A, 1.5MHz PowerWise ® Synchronous Buck Regulator datasheet (Rev. E) 27 mar 2013
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
EVM User's guide AN-1686 LM20123 Evaluation Board (Rev. B) 03 may 2013
Application note AN-1747 3A LM20k Reference Designs (Rev. A) 03 may 2013
Application note AN-2077 LM20k POL Module (Rev. A) 03 may 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.

Modelo de simulación

LM20123 PSpice Average Model

SNVM427.ZIP (57 KB) - PSpice Model
Modelo de simulación

LM20123 PSpice Transient Model

SNVM428.ZIP (189 KB) - PSpice Model
Modelo de simulación

LM20123 Unencrypted PSpice Average Model

SNVM799.ZIP (1 KB) - PSpice Model
Modelo de simulación

LM20123 Unencrypted PSpice Transient Model

SNVM800.ZIP (2 KB) - PSpice Model
Herramienta de cálculo

LM20123DESIGN-CALC — Hoja de cálculo de diseño LM20123

Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 16 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. ​​​​​​​​​​​​​​

Videos