Datasheet > A7544MP8R

A7544MP8R

更新时间： 2024-11-24 01:11:31

品牌	Logo	应用领域
创瑞 - AITSEMI		功效 DC-DC转换器
页数	文件大小	规格书
14页	525K
描述
DC-DC CONVERTER BOOST HIGH EFFICIENCY 5A SYNCHRONOUS

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中文翻译

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A7544MP8R 数据手册

A7544

AiT Semiconductor Inc.

DC-DC CONVERTER BOOST (STEP-UP)

HIGH EFFICIENCY 5A SYNCHRONOUS

www.ait-ic.com

DESCRIPTION

FEATURES

The A7544 is a high current, high efficiency

Synchronous Boost Convertor with power

MOSFETs embedded and with output turn off true

shutdown function for single cell Li-Ion and

Li-polymer battery powered products. The A7544

only consumes a 70μA (typ) quiescent current at no

load, and operates in power save PFM mode under

light load, which make it very suitable for

Always-On applications. It operates in a 500 kHz

fixed-frequency PWM mode at 500 kHz under

medium to heavy load conditions. It features a

current mode control for fast transient response

with internal compensation. The A7544 includes

cycle-by-cycle current limit and over-temperature

protection circuit.



More than 93% Efficiency at I_OUT=2A V_OUT= 5V

from 3.6V input. Low 70μA Quiescent Current

Guaranteed 3.0A Output Current at V_OUT= 5V

from 3.3V Input



500 kHz PWM Switching Frequency

Synchronous and Embedded Power MOSFETs

No Schottky Diode Required

Internal Soft-Start to Limit Inrush Current

Adjustable Output

Output turn off true shutdown function

Current Mode Operation with Internal

Compensation



For Excellent Line and Load Transient

Response



Overload/Short-Circuit Protection

Shutdown Current <1μA

With the A7544, a simple and flexible system

design can be achieved, eliminating extra

components, saving PCB space, and reducing

BOM cost. The A7544 is suitable for iPad-like

computers, smart phones and portable handheld

devices

Thermal Shutdown

Available in PSOP8 Package

APPLICATION



Power Bank

Battery backup Units

The A7544 is available in PSOP8 package.

Battery Powered USB Hub

Battery Powered Products

Handheld devices Such as Smart Phone and

Tablet PC

ORDERING INFORMATION

Package Type

PSOP8

Part Number

A7544MP8R

A7544MP8VR

TYPICAL APPLICATION

MP8

V: Halogen free Package

R: Tape & Reel

Note

AiT provides all RoHS products

Suffix ꢀ V ꢀ means Halogen free Package

Figure 1 Typical Application Circuit

REV1.0

- JUN 2016 RELEASED -

- 1 -

12 3 4 5 6 7...14

中文翻译

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与A7544MP8R相关器件

型号	品牌	获取价格	描述	数据表
A7544MP8VR	AITSEMI	获取价格	DC-DC CONVERTER BOOST HIGH EFFICIENCY 5A SYNCHRONOUS
A7545	AITSEMI	获取价格	DC-DC CONVERTER/BOOST LOW-NOISE 4.5A STEP-UP CURRENT MODE PWM CONVERTER
A7545MP8R	AITSEMI	获取价格	DC-DC CONVERTER/BOOST LOW-NOISE 4.5A STEP-UP CURRENT MODE PWM CONVERTER
A7545MP8VR	AITSEMI	获取价格	DC-DC CONVERTER/BOOST LOW-NOISE 4.5A STEP-UP CURRENT MODE PWM CONVERTER
A-754JD	TE	获取价格	A-754JD SPST N.O., 150 Amps, 120 VDC
A755KS107M1DAAE020	KEMET	获取价格	Polymer Aluminum, 105C LowZ, A755, 100 uF, 20%, 20 V, -55/105C, Lead Spacing = 3.5mm
A755KS157M1DAAE020	KEMET	获取价格	Polymer Aluminum, 105C LowZ, A755, 150 uF, 20%, 20 V, -55/105C, Lead Spacing = 3.5mm
A755KS227M1EAAE025	KEMET	获取价格	Aluminum Electrolytic Capacitor, Aluminum (solid Polymer)
A755KS687M0EAAE014	KEMET	获取价格	Single-Ended Conductive Polymer Aluminum Solid Electrolytic Capacitors
A755KS687M0GAAE014	KEMET	获取价格	Single-Ended Conductive Polymer Aluminum Solid Electrolytic Capacitors

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