MAX1734EUK15+

更新时间： 2024-02-24 11:44:35

品牌	Logo	应用领域
美信 - MAXIM		转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管信息通信管理
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MAX1734EUK15+ 数据手册

19-1586; Rev 0; 7/00

Low-Voltage, Step-Down DC-DC Converters

in SOT23

General Description

Features

The MAX1733/MAX1734 step-down DC-DC converters

deliver over 250mA to outputs as low as 1.25V. These

converters use a unique proprietary current-limited con-

trol scheme that achieves over 90% efficiency. These

devices maintain extremely low quiescent supply cur-

rent (40µA), and their high 1.2MHz (max) operating fre-

quency permits small, low-cost external components.

This combination of features makes the MAX1733/

MAX1734 excellent high-efficiency alternatives to linear

regulators in space-constrained applications.

ꢀ 250mA Guaranteed Output Current

ꢀ Synchronous Rectifier for Over 90% Efficiency

ꢀ Tiny 5-Pin SOT23 Package

ꢀ 40µA Quiescent Supply Current

ꢀ 0.01µA Logic-Controlled Shutdown

ꢀ Up to 1.2MHz Switching Frequency

ꢀ Fixed 1.8V or 1.5V Outputs (MAX1734)

ꢀ Adjustable Output Voltage (MAX1733)

Internal synchronous rectification greatly improves effi-

ciency and eliminates the external Schottky diode

required in conventional step-down converters. Both

devices also include internal digital soft-start to limit

input current upon startup and reduce input capacitor

requirements.

ꢀ

1.5% ꢀnitial Accuracy

ꢀ 2.7V to 5.5V ꢀnput Range

ꢀ Soft-Start Limits Startup Current

The MAX1733 provides an adjustable output voltage

(1.25V to 2.0V). The MAX1734 provides factory-preset

output voltages (see Selector Guide). Both are avail-

able in space-saving 5-pin SOT23 packages.

Ordering Information

PART

TEMP. RANGE

-40°C to +85°C

PꢀN-PACKAGE

5 SOT23-5

MAX1733EUK-T

MAX1734EUK_ _-T

5 SOT23-5

Note: The MAX1734 offers two output voltages. See the Selector

Guide, then insert the proper designator into the blanks above to

complete the part number.

Applications

Cellular, PCS, and Cordless Telephones

PDAs, Palmtops, and Handy-Terminals

Battery-Powered Equipment

Selector Guide

PART

(V)

TOP MARK

ADKY

OUT

MAX1733EUK

MAX1734EUK18

MAX1734EUK15

Adjustable

1.8

ADKW

1.5

ADKX

Typical Operating Circuit

Pin Configuration

TOP VIEW

INPUT

+2.7V TO +5.5V

OUT

250mA

10µH

2.2µF

22µF

MAX1734

MAX1733

MAX1734

GND

SHDN

OUT

SHDN

OUT (FB)

GND

SOT23-5

( ) ARE FOR MAX1733 ONLY.

________________________________________________________________ Maxim Integrated Products

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7 8

中文翻译

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MAX1734EUK15+ 替代型号

型号	品牌	替代类型	描述	数据表
MAX1734EUK15-T	MAXIM	完全替代	Analog IC
MAX1734EUK15+T	MAXIM	类似代替	暂无描述
MAX1734EUK15	MAXIM	功能相似	Low-Voltage, Step-Down DC-DC Converters in SOT23

与MAX1734EUK15+相关器件

型号	品牌	获取价格	描述	数据表
MAX1734EUK15+T	MAXIM	获取价格	暂无描述
MAX1734EUK15-T	MAXIM	获取价格	Analog IC
MAX1734EUK18	MAXIM	获取价格	Low-Voltage, Step-Down DC-DC Converters in SOT23
MAX1734EUK18+	MAXIM	获取价格	Switching Regulator, 0.565A, 1200kHz Switching Freq-Max, BICMOS, PDSO5, LEAD FREE, SOT-23,
MAX1734EUK18-T	MAXIM	获取价格	Analog IC
MAX1734EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1733/MAX1734
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,

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