Datasheet > AIC1553CV

AIC1553CV

更新时间： 2024-01-09 16:43:42

品牌	Logo	应用领域
沛亨 - AIC		转换器
页数	文件大小	规格书
9页	391K
描述
Compact 500KHz PWM/PFM, Step-Down DC/DC Converters

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AIC1553CV 数据手册

AIC1553

Compact 500KHz PWM/PFM, Step-Down DC/DC

Converters

ꢀFEATURES

ꢀDESCRIPTION

Tiny 5-Lead SOT-23 package

ꢁ

The AIC1553 is a step-down, current mode,

Uses Tiny Capacitors and Inductor

High Frequency Operation: 500KHz

High Output Current: 500mA

DC/DC converter. It operates from 2.5V to 5.5V

input voltage range and switches at 500KHz,

allowing the use of tiny, low cost capacitors and

inductors. The output voltage is adjustable from

0.75V to 5V. A built-in 0.6Ω switch allows up to

0.5A of output current at high efficiency.

Low R_DS(ON)Internal Switch: 0.6Ω

High Efficiency: Up to 90%

ꢁ

Current Mode Operation for Excellent Line and

Load Transient Response

Short-Circuit Protected

Low Quiescent Current: 22µA

Low Dropout Operation: 100% Duty Cycle

ꢁ

The AIC1553 operates continuously to very low

load currents to provide low ripple at the

expense of light load efficiency. With no load,

the AIC1553 draws only 22µA. In shutdown

mode, it draws less than 1µA, making it ideal for

current sensitive applications.

Ultralow Shutdown Current: I_Q< 1µA

ꢁ

Peak Inductor Current Independent of Inductor

Value

Low Output Voltages: Down to 0.75V

ꢁ

The tiny 5-lead SOT-23 package makes it

easy to save the layout area.

ꢀAPPLICATIONS

Cellular Phones.

ꢁ

PDAs and Handy-Terminals.

ꢁ

CPU I/O Supplies.

ꢁ

Cordless Phones.

ꢁ

Notebook Chipset Supplies.

ꢁ

Handheld Equipment

ꢁ

TYPICAL APPLICATION CIRCUIT

ꢀ

V_OUT

6.8 H

GND

VFB

VIN

V_IN

2.5V

2.5V~5.5V

SS12

560K

10 F

22pF

4.7 F

47 F

240K

AIC1553

ON/OFF

2.5V/500mA Step-Down Converter

Analog Integrations Corporation

4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan

TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw

DS-1553-P2 061402

12 3 4 5 6 7...9

中文翻译

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