MAX1692

更新时间： 2024-09-14 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		稳压器
页数	文件大小	规格书
12页	152K
描述
Low-Noise, 5.5V-Input, PWM Step-Down Regulator

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MAX1692 数据手册

19-1400; Rev 0; 11/98

Lo w -No is e , 5 .5 V-In p u t ,

P WM S t e p -Do w n Re g u la t o r

MAX1692

Ge n e ra l De s c rip t io n

Fe a t u re s

The MAX1692 is a low-noise, pulse-width-modulated

(PWM), DC-DC step-down converter. It powers logic

and transmitters in small wireless systems such as cellu-

lar phones, communicating PDAs, and handy-terminals.

The device features an internal synchronous rectifier for

high efficiency; it requires no external Schottky diode.

Excellent noise characteristics and fixed-frequency

operation provide easy post-filtering. The MAX1692 is

ideally suited for Li-Ion battery applications. It is also

useful for +3V or +5V fixed input applications.

♦ +2.7V to +5.5V Input Range

♦ Adjustable Output from 1.25V to V

♦ 600mA Guaranteed Output Current

♦ 95% Efficiency

♦ No Schottky Diode Required

♦ 85µA Quiescent Current

♦ 100% Duty Cycle in Dropout

♦ 750kHz Fixed-Frequency PWM Operation

♦ Synchronizable Switching Frequency

♦ Accurate Reference: 1.25V (±1.2%)

♦ Small 10-Pin µMAX Package

The device operates in one of four modes. Forced PWM

mode operates at a fixed frequency regardless of the

load. Synchronizable PWM mode allows an external

switching frequency to control and minimize harmonics.

Idle Mode™ (PWM/PFM) extends battery life by switch-

ing to a PFM pulse-skipping mode during light loads.

Shutdown mode places the device in standby, reduc-

ing quiescent supply current to under 0.1µA.

Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

PIN-PACKAGE

The MAX1692 can deliver over 600mA. The output volt-

MAX1692EUB

-40°C to +85°C

10 µMAX

age can be adjusted from 1.25V to V with the input

ra ng e of + 2.7V to + 5.5V. Othe r fe a ture s of the

MAX1692 include high efficiency, low dropout voltage,

and a 1.2%-accurate 1.25V reference. It is available in

a space-saving 10-pin µMAX package with a height of

only 1.11mm.

P in Co n fig u ra t io n

TOP VIEW

10 PGND

Ap p lic a t io n s

Cellular Phones

Cordless Phones

CPU I/O Supplies

MAX1692

GND

REF

SHDN

SYNC/PWM

LIM

Notebook Chipset Supplies

PDAs and Handy-Terminals Battery-Operated Devices

(1 Li-Ion or 3 NiMH/NiCd)

µMAX

Typ ic a l Op e ra t in g Circ u it

V = 2.7V TO 5.5V

= 1.25V TO V

OUT IN

SHDN

LIM

MAX1692

SYNC/PWM

PGND

REF

AGND

Idle Mode is a trademark of Maxim Integrated Products.

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

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

12 3 4 5 6 7...12

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与MAX1692相关器件

型号	品牌	获取价格	描述	数据表
MAX16920	MAXIM	获取价格	Automotive Power-Management IC with Three Step-Down Converters and Linear Regulator
MAX16920	ADI	获取价格	汽车应用电源管理IC，提供3路降压型转换器和线性稳压器
MAX16920A	MAXIM	获取价格	5.5V to 18V Input Range, Survives 45V Transients
MAX16920B	MAXIM	获取价格	5.5V to 18V Input Range, Survives 45V Transients
MAX16920BATJ/V+	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, 7 X 7 MM, ROHS COMPLIANT, TQF
MAX16920BEVKIT	MAXIM	获取价格	5.5V to 18V Input Range, Survives 45V Transients
MAX16922	MAXIM	获取价格	2.2MHz, Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET
MAX16922	ADI	获取价格	2.2MHz、双通道、降压型DC-DC转换器，带有两路LDO和/RESET功能
MAX16922_10	MAXIM	获取价格	2.2MHz, Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET
MAX16922_11	MAXIM	获取价格	2.2MHz, Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET

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