Datasheet > ACT4513_12

ACT4513_12

更新时间： 2022-05-26 01:15:10

品牌	Logo	应用领域
技领 - ACTIVE-SEMI		转换器传感器
页数	文件大小	规格书
15页	673K
描述
Wide-Input Sensorless CC/CV Step-Down DC/DC Converter

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ACT4513_12 数据手册

ACT4513

Rev 7, 14-Nov-12

Wide-Input Sensorless CC/CV Step-Down DC/DC Converter

FEATURES

APPLICATIONS

• Up to 40V Input Voltage

• Up to 2A output current

• Output Voltage up to 12V

• Car Charger/ Adaptor

• Rechargeable Portable Devices

• General-Purpose CC/CV Supply

• Patent Pending Active CC Sensorless Constant

Current Control

GENERAL DESCRIPTION

− Integrated Current Control Improves

Efficiency, Lowers Cost, and Reduces

Component Count

ACT4513 is a wide input voltage, high efficiency

Active CC step-down DC/DC converter that

operates in either CV (Constant Output Voltage)

mode or CC (Constant Output Current) mode.

ACT4513 provides up to 2A output current at

210kHz switching frequency.

• Resistor Programmable

− Current Limit from 750mA to 2A

− Patented Cable Compensation from 0Ω to

Active CC is a patent-pending control scheme to

achieve highest accuracy sensorless constant

current control. Active CC eliminates the expensive,

high accuracy current sense resistor, making it ideal

for battery charging applications and adaptors with

accurate current limit. The ACT4513 achieves

higher efficiency than traditional constant current

switching regulators by eliminating its associated

power loss.

0.5Ω

• ±7.5% CC Accuracy

− Compensation of Input /Output Voltage Change

− Temperature Compensation

− Independent of inductance and Inductor DCR

• 2% Feedback Voltage Accuracy

• Up to 93% Efficiency

• 210kHz Switching Frequency Eases EMI Design

• Advanced Feature Set

Protection features include cycle-by-cycle current

limit, thermal shutdown, and frequency foldback at

short circuit. The devices are available in a SOP-

8EP package and require very few external devices

for operation.

− Integrated Soft Start

− Thermal Shutdown

− Secondary Cycle-by-Cycle Current Limit

− Protection Against Shorted ISET Pin

• SOP-8EP Package

CC/CV Curve

6.0

V_IN= 24V

5.0

4.0

V_IN= 12V

3.0

2.0

1.0

0.0

0.3

0.6

0.9

1.2

1.5

1.8

2.1

2.4

2.7

Output Current (A)

Innovative Power^TM

- 1 -

www.active-semi.com

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