LMR14020

ACTIVE

SIMPLE SWITCHER, 4-V to 40-V, 2-A 2.2-MHz step-down converter with Low IQ

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Same functionality with different pin-out to the compared device
LMR51420 ACTIVE SIMPLE SWITCHER® power converter 4.5V-to-36V, 2A, synchronous buck with 40µA IQ SOT-23 package, integrated compensation and synchronous rectification.
TLVM13620 ACTIVE 3.6-V to 36-V input, 1-V to 6-V output, 2-A step-down module in 4-mm x 6-mm x 1.8-mm package Smaller design with an integrated-inductor power module.

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2 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) 2 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
  • 2 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
  • 2 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 LMR14020 is a 40 V, 2 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 LMR14020 is a 40 V, 2 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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Design & development

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Evaluation board

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Evaluation board

DS90UH988-Q1MEVM — DS90UH988-Q1 FPD-Link IV to OpenLDI deserializer evaluation module

The DS90Ux988-Q1M evaluation module (EVM) is a functional board design for evaluating the DS90Ux988-Q1 FPD-Link IV to OLDI/RGB bridge device. The device partners with FPD-Link IV capable serializers such as the DS90Ux981-Q1 or DS90Ux983-Q1 serializers in FPD-Link IV mode, or FPD-Link III capable (...)
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User guide: PDF
Not available on TI.com
Simulation model

LMR14020S PSpice Average Model

SNVMB55.ZIP (30 KB) - PSpice Model
Simulation model

LMR14020S PSpice Transient Model

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Simulation model

LMR14020S Unencrypted PSpice Transient Model

SNVM818.ZIP (6 KB) - PSpice Model
Reference designs

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Design guide: PDF
Schematic: PDF
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HSOIC (DDA) 8 Ultra Librarian

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