Datasheet > MAX1734EVKIT

MAX1734EVKIT

更新时间： 2024-09-25 23:45:51

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
3页	94K
描述
Evaluation Kit for the MAX1733/MAX1734

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中文翻译

获取价格

数据手册

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MAX1734EVKIT 数据手册

19-1793; Rev 0; 8/00

MAX1734 Evaluation Kit

General Description

Features

ꢀ +2.7V to +5.5V Battery Input Voltage

ꢀ +1.8V Output Voltage

The MAX1734 evaluation kit (EV kit) is a fully assembled

and tested surface-mount PC board that contains a

switching-regulator circuit configured for a +1.8V output.

At up to 250mA, it accepts inputs from a +2.7VDC to

+5.5VDC source or a 1-cell lithium-ion (Li+) or 2- to

3-cell battery.

ꢀ 250mA Output Current

ꢀ Efficiency >85% from 2mA to 250mA

The MAX1734 features an internal P-channel MOSFET

switch, a synchronous rectifier, logic-controlled

shutdown, and digital soft-start to limit startup current.

The MAX1734 EV kit provides low quiescent current

and efficiency up to 93%, providing maximum battery

life. High-frequency operation up to 1.2MHz with a max-

imum duty cycle of 100% allows the use of tiny surface-

mount components. The EV kit can also evaluate the

MAX1733 after modifications.

ꢀ Internal P-Channel Switch and Synchronous

Rectifier

ꢀ 0.01µA (typ) IC Shutdown Current

ꢀ 50µA Quiescent Supply Current

ꢀ Up to 1.2MHz (max) Switching Frequency

ꢀ Surface-Mount Components

ꢀ Fully Assembled and Tested

Component List

DESCRIPTION

Ordering Information

DESIGNATION QTY

2.2µF, 10V X5R ceramic capacitor

Taiyo Yuden LMK325BJ106MN or

Taiyo Yuden LMK212BJ225MG

PART

TEMP. RANGE

IC PACKAGE

MAX1734EVKIT

5 SOT23

0°C to +70°C

22µF, 6.3V tantalum capacitor

AVX TAJA226M006R

JU1

Quick Start

3-pin header

The MAX1734 EV kit is fully assembled and tested.

Follow these steps to verify board operation. Do not

turn on the power supply until all connections are

completed:

10µH inductor

Sumida CR43-100MC

R1, R2

Not installed

MAX1734EUK18 (5-pin SOT23, top

mark ADKW)

1) Connect a +2.7V (for guaranteed startup) to +5.5V

supply to the VIN pad. Connect the supply ground to

the GND pad.

None

Shunt

2) Connect a voltmeter to the VOUT pad.

MAX1734 PC board

MAX1734 data sheet

MAX1734 EV kit manual

3) Verify that the shunt is across pins 1 and 2 on JU1,

thus enabling the MAX1734.

4) Turn on the power supply and verify that the output is

at +1.8V.

For instructions on selecting the feedback resistors for

other output voltages, see Evaluating Other Output

Voltages.

Component Suppliers

SUPPLIER

PHONE

FAX

Detailed Description

AVX

803-946-0690

847-956-0666

408-573-4150

803-626-3123

847-956-0702

408-573-4159

The MAX1734 EV kit contains a highly efficient switching-

regulator circuit. The circuit provides a +1.8V output at

250mA from a +2.7V to +5.5V input voltage range.

Digital soft-start limits current during startup.

Sumida USA

Taiyo Yuden

Note: Please indicate that you are using the MAX1734 when

contacting these component suppliers.

________________________________________________________________ Maxim Integrated Products

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3

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与MAX1734EVKIT相关器件

型号	品牌	获取价格	描述	数据表
MAX1735	MAXIM	获取价格	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23
MAX1735	ADI	获取价格	200mA、负输出、低压差线性稳压器，SOT23封装
MAX1735EUK	MAXIM	获取价格	PLASTIC ENCAPSULATED DEVICES
MAX1735EUK25	MAXIM	获取价格	Fixed/Adjustable Negative LDO Regulator,
MAX1735EUK25+T	MAXIM	获取价格	Fixed/Adjustable Negative LDO Regulator, 2.5V, 0.24V Dropout, CMOS, PDSO5, SOT-23, 5 PIN
MAX1735EUK25-T	MAXIM	获取价格	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23
MAX1735EUK30	MAXIM	获取价格	Fixed/Adjustable Negative LDO Regulator, 3V, 0.24V Dropout, PDSO5, SOT-25, 5 PIN
MAX1735EUK30+	MAXIM	获取价格	暂无描述
MAX1735EUK30+T	MAXIM	获取价格	Fixed/Adjustable Negative LDO Regulator, 3V, 0.24V Dropout, CMOS, PDSO5, SOT-23, 5 PIN
MAX1735EUK30-T	MAXIM	获取价格	200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23

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