Datasheet > LM2705

LM2705

更新时间： 2024-11-17 11:13:35

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
24页	1118K
描述
具有 150mA 峰值电流限制的微功耗升压直流/直流转换器

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LM2705

SNVS191F –NOVEMBER 2002–REVISED OCTOBER 2016

LM2705 Micropower Step-Up DC-DC Converter With 150-mA Peak Current Limit

1 Features

3 Description

The LM2705 is

converter in a small 5-pin SOT-23 package. A

current-limited, fixed-off-time control scheme

a micropower step-up DC-DC

•

2.2-V to 7-V Input Range

•

150-mA, 0.7-Ω Internal Switch

Adjustable Output Voltage up to 20 V

Input Undervoltage Lockout

conserves operating current, which results in high

efficiency over a wide range of load conditions. The

21-V switch allows for output voltages as high as

20 V. The low 400-ns off-time permits the use of tiny,

low-profile inductors and capacitors to minimize

footprint and cost in space-conscious portable

applications. The LM2705 is ideal for LCD panels

requiring low current and high efficiency as well as

white-LED applications for cellular phone back-

lighting. The LM2705 device can drive up to 3 white

LEDs from a single Li-Ion battery. The low peak-

inductor current of the LM2705 makes it ideal for USB

applications.

0.01-µA Shutdown Current

Uses Small Surface-Mount Components

Small 5-Pin SOT-23 Package

2 Applications

•

LCD Bias Supplies

White-LED Backlighting

Handheld Devices

Digital Cameras

Device Information⁽¹⁾

Portable Applications

PART NUMBER

LM2705

PACKAGE

BODY SIZE (NOM)

SOT-23 (5)

2.90 mm × 1.60 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

space

Typical 20-V Application

20 V

68 mH

6 mA

V_IN= Li-Ion

510 kΩ

VIN

C_IN

4.7 mF

LM2705

C_OUT

1 mF

SHDN

33 kΩ

GND

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...24

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LM2705 替代型号

型号	品牌	替代类型	描述	数据表
LM3508	TI	功能相似	同步磁性恒流白光 LED 驱动器
LM2703	TI	功能相似	具有 350mA 峰值电流限制的微功耗升压直流/直流转换器

与LM2705相关器件

型号	品牌	获取价格	描述	数据表
LM2705_07	NSC	获取价格	Micropower Step-up DC/DC Converter with 150mA Peak Current Limit
LM2705MF-ADJ	NSC	获取价格	Micropower Step-up DC/DC Converter with 150mA Peak Current Limit
LM2705MF-ADJ/NOPB	TI	获取价格	具有 150mA 峰值电流限制的微功耗升压直流/直流转换器 \| DBV \| 5 \| -40
LM2705MFX-ADJ	NSC	获取价格	Micropower Step-up DC/DC Converter with 150mA Peak Current Limit
LM2705MFX-ADJ/NOPB	TI	获取价格	具有 150mA 峰值电流限制的微功耗升压直流/直流转换器 \| DBV \| 5 \| -40
LM2706	NSC	获取价格	Miniature, Variable, Step-Down DC-DC Converter with Bypass for RF Power Amplifiers
LM2706TL	NSC	获取价格	Miniature, Variable, Step-Down DC-DC Converter with Bypass for RF Power Amplifiers
LM2706TLX	NSC	获取价格	Miniature, Variable, Step-Down DC-DC Converter with Bypass for RF Power Amplifiers
LM2707	NSC	获取价格	Inductive-Boost Series LED Driver with Programmable Oscillator Frequency
LM2707MF	NSC	获取价格	Inductive-Boost Series LED Driver with Programmable Oscillator Frequency

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