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LM2742

ACTIVO

Controlador reductor síncrono de modo de tensión de 2.2 V a 16 V con arranque suave ajustable

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TPS54KB20 ACTIVO Convertidor reductor síncrono de 4 V a 16 V y 25 A Higher power density integrated FET converter solution for up to 25A output current

LM2742

ACTIVO
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Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 16 Vin (min) (V) 2.2 Vout (max) (V) 13.5 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Power good, Synchronous rectification Duty cycle (max) (%) 90 Iq (typ) (A) 0.0015 Number of phases 1 Operating temperature range (°C) -40 to 125
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 16 Vin (min) (V) 2.2 Vout (max) (V) 13.5 Vout (min) (V) 0.6 Control mode Voltage mode Features Enable, Power good, Synchronous rectification Duty cycle (max) (%) 90 Iq (typ) (A) 0.0015 Number of phases 1 Operating temperature range (°C) -40 to 125
TSSOP (PW) 14 32 mm² (5 mm × 6.4 mm)
  • Input Power from 1V to 16V
  • Output Voltage Adjustable down to 0.6V
  • Power Good Flag, Adjustable Soft-start and Output Enable for Easy Power Sequencing
  • Reference Accuracy: 1.5% (0°C–125°C)
  • Current Limit Without Sense Resistor
  • Soft Start
  • Switching Frequency from 50 kHz to 2 MHz
  • 40ns Typical Minimum On-time
  • TSSOP-14 Package

All trademarks are the property of their respective owners.

  • Input Power from 1V to 16V
  • Output Voltage Adjustable down to 0.6V
  • Power Good Flag, Adjustable Soft-start and Output Enable for Easy Power Sequencing
  • Reference Accuracy: 1.5% (0°C–125°C)
  • Current Limit Without Sense Resistor
  • Soft Start
  • Switching Frequency from 50 kHz to 2 MHz
  • 40ns Typical Minimum On-time
  • TSSOP-14 Package

All trademarks are the property of their respective owners.

The LM2742 is a high-speed, synchronous, switching regulator controller. It is intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2742 operates from a low-current 5V bias and can convert from a 1V to 16V power rail. The part utilizes a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by setting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enables on-times on the order of 40ns, one of the best in the industry. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 1V to 16V and the output voltage is adjustable down to 0.6V.

The LM2742 is a high-speed, synchronous, switching regulator controller. It is intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2742 operates from a low-current 5V bias and can convert from a 1V to 16V power rail. The part utilizes a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by setting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enables on-times on the order of 40ns, one of the best in the industry. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 1V to 16V and the output voltage is adjustable down to 0.6V.
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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM2742 N-Chan FET Synch Buck Reg Cntrlr for Low Output Voltages datasheet (Rev. C) 28/03/2013
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 21/07/2016
Nota sobre la aplicación Automated Frequency Response Analyzer 9/10/2013
Nota sobre la aplicación AN-1603 LM274X Reference Designs (Rev. C) 1/05/2013
Nota sobre la aplicación Current Limit Foldback Improves Short Circuit Protection in LM274X Family (Rev. B) 23/04/2013
Nota sobre la aplicación Optmiz Pwr Cntrlr Dsigns thru Utiliz Freq & Sync, Ext Ref, Trking & Precis EN 24/04/2008
Nota sobre la aplicación Power Management Considerations for FPGAs and ASICs 22/03/2007

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