LMR61428

Name: LMR61428
Brand: TI
SKU: LMR61428
Price: 0.79 USD

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Regulador elevador de voltaje de 1,2 V a 14 V, 2,85 A y 2 MHz

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Hoja de datos

document-pdfAcrobat LMR61428 Low Input Voltage, Step-Up DC-DC Converter datasheet (Rev. A) (Inglés)

LMR61428

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Hoja de datos

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Detalles del producto

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Boost

Type

Converter

Vin (min) (V)

1.2

Vin (max) (V)

14

Switching frequency (min) (kHz)

300

Switching frequency (max) (kHz)

2000

Features

Enable, Nonsynchronous rectification

Vout (min) (V)

1.24

Vout (max) (V)

14

Iq (typ) (µA)

100

Duty cycle (max) (%)

70

Switch current limit (typ) (A)

2.85

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Topology

Boost

Type

Converter

Vin (min) (V)

1.2

Vin (max) (V)

14

Switching frequency (min) (kHz)

300

Switching frequency (max) (kHz)

2000

Features

Enable, Nonsynchronous rectification

Vout (min) (V)

1.24

Vout (max) (V)

14

Iq (typ) (µA)

100

Duty cycle (max) (%)

70

Switch current limit (typ) (A)

2.85

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

1.2V to 14V Input Voltage
Adjustable Output Voltage up to 14V
Switch Current up to 2.85A
Up to 2 MHz Switching Frequency
Low Shutdown Iq, <1µA
Cycle-by-Cycle Current Limiting
VSSOP Packaging (3.0 x 5.0 x 1.09mm)
WEBENCH Enabled

Performance Benefits

Extremely Easy to Use
Tiny Overall Solution Reduces System Cost

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

1.2V to 14V Input Voltage
Adjustable Output Voltage up to 14V
Switch Current up to 2.85A
Up to 2 MHz Switching Frequency
Low Shutdown Iq, <1µA
Cycle-by-Cycle Current Limiting
VSSOP Packaging (3.0 x 5.0 x 1.09mm)
WEBENCH Enabled

Performance Benefits

Extremely Easy to Use
Tiny Overall Solution Reduces System Cost

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

The LMR61428 is a step-up DC-DC switching regulator for battery-powered and low input voltage systems that can achieve efficiencies up to 90%. It has a wide input voltage range from 1.2V to 14V and a possible regulated output voltage range of 1.24V to 14V. It has an internal 0.17Ω N-Channel MOSFET power switch.

The high switching frequency of up to 2MHz of the LMR61428 allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5µA. The LMR61428 is available in a VSSOP-8 package.

The LMR61428 is a step-up DC-DC switching regulator for battery-powered and low input voltage systems that can achieve efficiencies up to 90%. It has a wide input voltage range from 1.2V to 14V and a possible regulated output voltage range of 1.24V to 14V. It has an internal 0.17Ω N-Channel MOSFET power switch.

The high switching frequency of up to 2MHz of the LMR61428 allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5µA. The LMR61428 is available in a VSSOP-8 package.

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Documentación técnica

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	Tipo	Título		Fecha
*	Data sheet	LMR61428 Low Input Voltage, Step-Up DC-DC Converter datasheet (Rev. A)		04 abr 2013
	Application note	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25 mar 2024
	Application note	Basic Calculation of a Boost Converter's Power Stage (Rev. D)	PDF \| HTML	28 oct 2022
	Application note	Working With Boost Converters		15 jun 2015
	User guide	AN-2281 LMR61428 Evaluation Module (Rev. A)		26 abr 2013
	Application note	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		24 abr 2013
	Application note	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		23 abr 2013
	Application note	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		23 abr 2013
	Application note	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		23 abr 2013
	Application note	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		23 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
	Application note	Input and Output Capacitor Selection		19 sep 2005
	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
	Application note	Understanding Boost Power Stages In Switchmode Power Supplies		04 mar 1999

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

LMR61428XMMEVM — Módulo de evaluación LMR61428

IntroductionThe LMR61428 evaluation module is designed to provide the power supply design engineer with a fully functional regulatordesign. The evaluation module takes the input from a single Li-Ion battery and boosts the voltage up to 5V at a constant loadcapability of 500mA. The switching (...)

Guía del usuario: PDF