Datasheet > MAX1684

MAX1684

更新时间： 2024-11-10 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
16页	235K
描述
Low-Noise, 14V Input, 1A, PWM Step-Down Converters

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MAX1684 数据手册

19-1454; Rev 0; 4/99

Lo w -No is e , 1 4 V In p u t , 1 A, P WM

S t e p -Do w n Co n ve rt e rs

4/MAX1685

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

Fe a t u re s

The MAX1684/MAX1685 are high-efficiency, internal-

switch, PWM step-down switching regulators intended to

p owe r c e llula r p hone s , c ommunic a ting PDAs , a nd

handy-terminals. These devices deliver a guaranteed 1A

output current from two Li-Ion batteries. Their wide input

voltage range of 2.7V to 14V gives design flexibility and

allows batteries to charge from a wall cube, since the ICs

operate at the higher voltages that occur when the bat-

tery is removed. The output voltage is preset to 3.3V or

♦ Up to 96% Efficiency

♦ 1A Guaranteed Output Current

♦ 100% Duty Cycle in Dropout

♦ 2.7V to 14V Input Range (15V absolute max)

♦ ±1% Accurate Reference Output

♦ 0.24Ω P-Channel On-Resistance

can be externally adjusted from 1.25V to V .

♦ Synchronizable Switching Frequency

The low-on-resistance power switch and built-in synchro-

nous rectifier provide high efficiencies of up to 96%.

There are four modes of operation: fixed-frequency

mode, normal mode, low-power mode, and shutdown

mode. The fixed-frequency PWM mode of operation

offers excellent noise characteristics. The normal mode

maintains high efficiency at all loads. The low-power

mode is used to conserve power in standby or when full

load is not required. The shutdown mode is used to

power down the device for minimal current draw.

♦ Fixed-Frequency PWM Operation

300kHz (MAX1684)

600kHz (MAX1685)

♦ 150µA Normal Mode Quiescent Current

♦ 25µA Low-Power Mode Quiescent Current

♦ 2µA Shutdown Current

♦ Dual Mode™ Fixed 3.3V (±1%) Output or

Adjustable Output (1.25V to V )

The MAX1684 runs a t 300kHz for a p p lic a tions tha t

re q uire hig he s t e ffic ie nc y. The MAX1685 runs a t

600kHz to allow use of smaller external components.

These devices can also be synchronized to an external

clock. Other features include a 100% duty cycle for

low-dropout applications, an auxiliary 3V/5mA output,

and a 1% accurate reference.

♦ Small 16-QSOP Package

♦ Auxiliary Output (CVL): 3V/5mA

Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

-40°C to +85°C

PIN-PACKAGE

16 QSOP

Both devices are available in a space-saving 16-QSOP

package. An evaluation kit is also available to help

speed designs. For a similar device in a 10-pin µMAX

package with lower input voltage requirements (5.5V

max), see the MAX1692 data sheet.

MAX1684EEE

MAX1685EEE

16 QSOP

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

Ap p lic a t io n s

Cellular Phones

OUTPUT

3.3V AT 1A

INPUT

2.7V TO 14V

2-Way Radios and Walkie-Talkies

Computer Peripherals

AIN

SHDN

MAX1684

MAX1685

Personal Communicators

GND

PDAs and Handy-Terminals

CVH

CVL

BOOT

STBY

SYNC/PWM

Pin Configuration appears at end of data sheet.

REF

Dual 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...16

中文翻译

下载PDF

与MAX1684相关器件

型号	品牌	获取价格	描述	数据表
MAX16840	MAXIM	获取价格	LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps
MAX16840	ADI	获取价格	MR16及其它12V交流输入LED灯驱动器，内置MOSFET
MAX16840_1108	MAXIM	获取价格	LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps
MAX16840ATB	MAXIM	获取价格	LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps
MAX16840ATB+	MAXIM	获取价格	LED Driver with Integrated MOSFET for MR16 and Other 12V AC Input Lamps
MAX16840ATB+T	MAXIM	获取价格	LED Driver,
MAX16840ATE+	MAXIM	获取价格	LED Driver
MAX16841	MAXIM	获取价格	Controller IC for Dimmable Offline LED Lamps
MAX16841_13	MAXIM	获取价格	Controller IC for Dimmable Offline LED Lamps
MAX16841ASA+	MAXIM	获取价格	LED Driver, 1-Segment, BICMOS, PDSO8, ROHS COMPLIANT, SOP-8

与MAX1684相关文章

国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

23
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

7
AMD宣布全球裁员约1000人，调整战略聚焦增长
2024-11-14

8
英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

31

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX1684

MAX1684 数据手册

与MAX1684相关器件

与MAX1684相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MAX1684

MAX1684 数据手册

与MAX1684相关器件

与MAX1684相关文章

您还可以找

您在本页遇到什么问题？