Datasheet > A7442

A7442

更新时间： 2024-11-27 01:13:11

品牌	Logo	应用领域
创瑞 - AITSEMI		DC-DC转换器
页数	文件大小	规格书
20页	705K
描述
DC-DC CONVERTER/ BUCK HIGH PERFORMANCE CV/CC QUICK CHARGER SYNCHRONOUS

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A7442 数据手册

A7442

DC-DC CONVERTER/ BUCK (STEP-DOWN)

AiT Semiconductor Inc.

www.ait-ic.com

40V, 4.2A HIGH PERFORMANCE CV/CC QUICK CHARGER SYNCHRONOUS

DESCRIPTION

FEATURES

AP7442 is a High Efficiency Synchronous DC-DC

Buck Converters with CV / CC modes, which can

output up to 4.2 A in a wide input range from 6 V to

36 V. The A7442 operates either in CV (Constant

Voltage) mode or CC (Constant Current) mode.

With the CV / CC mode, adjustable current limit and

output voltage, the A7442 is particularly suitable for

QC 2.0 / 3.0 (12V / 1.5A, 9V / 2A and 5V / 3A),

Type-C PD (5 V / 3 A) and Apple portable device

(5V / 2.4A) applications. The output voltage and CC

limit can be programed through the FB, CSP and

CSN pins respectively.

In order to achieve better EMI performance and

comply with Apple’s MFi standard, the switching

frequency was fixed at 130kHz. A7442 is capable to

operate in CC mode down to 3V output voltage to

protect the soft-short condition that is from the over

current of the portable device

A discharge circuitry is integrated to quickly and

reliably discharge output capacitors to avoid the

faulty voltage delivery in case of output over voltage

and ensure safe operation for QC 2.0 / 3.0

application. The hiccup mode output Under Voltage

Protection(UVP) can reduce the average input

current to 50mA. Features such as output cord

voltage drop compensation and low voltage drop

operation is especially suitable for car charger.



Wide Input Supply Voltage Range of 6V ~ 40V

Up to 4.2 A Output Current

Up to 95 % Efficiency

130kHz Fixed Switching Frequency

Internal Soft-start Circuitry

Compensation for Output Cord Voltage Drop

Input Under Voltage Lockout

Input Over Voltage Protection

Adjustable Constant Current Limit

Output Over Voltage Protection

Output Auto Discharge

Cycle by Cycle Peak Current Limit

Hiccup Mode Output UVP for Soft-short ≤ 3V

Thermal Shutdown

Available in PSOP8 Package

APPLICATION



Car Charger

Portable Charging Devices

CV / CC regulation DC / DC converter

TYPICAL APPLICATION

The A7442 is available in PSOP8 package.

ORDERING INFORMATION

Package Type

Part Number

A7442MP8R

A7442MP8VR

PSOP8

MP8

SPQ: 4,000pcs/Reel

V: Halogen free Package

R: Tape & Reel

Note

AiT provides all RoHS products

REV1.0

- JUL 2017 RELEASED -

- 1 -

12 3 4 5 6 7...20

中文翻译

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与A7442相关器件

型号	品牌	获取价格	描述	数据表
A7442MP8R	AITSEMI	获取价格	DC-DC CONVERTER/ BUCK HIGH PERFORMANCE CV/CC QUICK CHARGER SYNCHRONOUS
A7442MP8VR	AITSEMI	获取价格	DC-DC CONVERTER/ BUCK HIGH PERFORMANCE CV/CC QUICK CHARGER SYNCHRONOUS
A-7478-02A102	MOLEX	获取价格	2.54mm (.100) Pitch KK® Solid Header, Right A
A-7478-02A222	MOLEX	获取价格	KKÂ® 254 Solid Header, Right Angle, with Fric
A-7478-02A241	MOLEX	获取价格	KKÂ® 254 Solid Header, Right Angle, with Fric
A-7478-02A501	MOLEX	获取价格	2.54mm (.100) Pitch KK® Solid Header, Right A
A-7478-03A102	MOLEX	获取价格	2.54mm (.100) Pitch KK® Solid Header, Right A
A-7478-03A222	MOLEX	获取价格	KKÂ® 254 Solid Header, Right Angle, with Fric
A-7478-03A501	MOLEX	获取价格	2.54mm (.100) Pitch KK® Solid Header, Right A
A-7478-04A102	MOLEX	获取价格	2.54mm (.100) Pitch KK® Solid Header, Right A

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