Datasheet > A7501K3VR-27

A7501K3VR-27

更新时间： 2024-11-20 00:54:35

品牌	Logo	应用领域
创瑞 - AITSEMI		DC-DC转换器开关
页数	文件大小	规格书
12页	386K
描述
DC-DC CONVERTER/BOOST STEP-UP SWITCHING REGULATOR

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A7501K3VR-27 数据手册

A7501

AiT Semiconductor Inc.

www.ait-ic.com

DC-DC CONVERTER/BOOST(STEP-UP)

SUPER-SMALL PACKAGE VFM CONTROL

STEP-UPSWITCHING REGULATOR

DESCRIPTION

FEATURES

The A7501 Series is a CMOS VFM-control step-up

switching regulator that mainly consists of a reference

voltage source, an oscillator, and a comparator.

Enabling products with a low ripple over a wide

range, high efficiency, and high output current.

Products with a fixed duty ratio of 75 %（Lower Output

Voltage）or 88%(Higher Output Voltage) are also

available. With the A7501 Series, a step-up switching

regulator can be configured by using an external coil,

capacitor, and diode. A protection circuit turns off the

built-in MOSFET when the voltage at the CONT pin

exceeds the limit to prevent it from being damaged.

This feature, along with the mini package and low

current consumption, makes the A7501 Series ideal

for applications such as the power supply unit of

portable equipment.



Low voltage operation: Start up at 0.9V min

(I_OUT=1mA) guaranteed

Low input current: During maximum operation:

18μA (V_OUT=3.3V, typ.)

Duty ratio: 77% Built-in fixed-type PFM

controller



External parts: Coil, capacitor, and diode

Output voltage: Settable to between

2.5V to 5.5V , accuracy of 2%



Available in SOT-89-3 and SOT-23 Packages

APPLICATION



Power supply for portable equipment such as

digital cameras, electronic notebooks, and PDA

Power supply for audio equipment such as

portable CD/MD players

Constant voltage power supply for cameras,

video equipment and communications

equipment

A7501 is available in SOT-89-3 and SOT-23

packages.



Power supply for microcomputers

TYPICAL APPLICATION CIRCUIT

ORDER INFORMATION

Package Type

SOT-89-3

Part Number

A7501K3R-XX

A7501K3VR-XX

A7501E3R-XX

A7501E3VR-XX

SOT-23

XX: Output Voltage,

27=2.7V, 30=3.0V,

Note

R: Tape & Reel

V: Halogen free Package

AiT provides all RoHS products

Suffix “ V “ means Halogen free Package

Components Normal Value: C1=10uF, C2=47uF,

L=22uH, D1 1N5818

REV1.3

- MAR 2009 RELEASED, JUN 2013 UPDATE-

- 1 -

12 3 4 5 6 7...12

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