LMR61428

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

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1.2V 至 14V、2.85A 2MHz 升压稳压器

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数据表

document-pdfAcrobat LMR61428 Low Input Voltage, Step-Up DC-DC Converter 数据表 (Rev. A) (英语)

LMR61428

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数据表

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产品详情

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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	类型	标题		下载最新的英语版本		日期
*	数据表	LMR61428 Low Input Voltage, Step-Up DC-DC Converter 数据表 (Rev. A)				2013年 4月 4日
	应用手册	半导体和 IC 封装热指标 (Rev. D)	PDF \| HTML	英语版 (Rev.D)	PDF \| HTML	2024年 4月 24日
	应用手册	Basic Calculation of a Boost Converter's Power Stage... (Rev. D)	PDF \| HTML			2022年 11月 21日
	应用手册	升压转换器功率级的基本计算 (Rev. D)	PDF \| HTML	英语版 (Rev.D)	PDF \| HTML	2022年 11月 11日
	应用手册	Working With Boost Converters				2015年 6月 15日
	用户指南	AN-2281 LMR61428 Evaluation Module (Rev. A)				2013年 4月 26日
	应用手册	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)				2013年 4月 24日
	应用手册	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)				2013年 4月 23日
	应用手册	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)				2013年 4月 23日
	应用手册	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)				2013年 4月 23日
	应用手册	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)				2013年 4月 23日
	应用手册	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)				2013年 4月 23日
	应用手册	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)				2013年 4月 23日
	应用手册	Input and Output Capacitor Selection				2005年 9月 19日
	更多文献资料	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations				2005年 7月 12日
	应用手册	AN-643 EMI/RFI Board Design (Rev. B)				2004年 5月 3日
	应用手册	了解开关模式电源中的升压功率级				1999年 3月 4日

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评估板

LMR61428XMMEVM — LMR61428 评估模块

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 (...)

用户指南: PDF