ACT4533 datasheet(1/16 Pages) ACTIVE-SEMI

Numer części	ACT4533

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

PDF	16 Pages

Scroll/Zoom	100%

Producent	ACTIVE-SEMI [Active-Semi, Inc]

Strona internetowa	http://www.active-semi.com

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Innovative Power

TM

- 1 -

www.active-semi.com

FEATURES

• 40V Input Voltage Surge

• 32V Steady State Operation

• Up to 3A Output Current

• Constant Current Output with Input up to 32V

• Output Voltage up to 12V

• 125kHz Switching Frequency Eases EMI Design

• Good EMI Performance to Pass EN55022

Radiation Regulation without adding EMI

Components

• Patent Pending Active CC Sensorless Constant

Current Control

− Integrated Current Control Improves

Efficiency, Lowers Cost, and Reduces

Component Count

• Resistor Programmable

− Current Limit from 1.5A to 3A

− Patented Cable Compensation from 0 to 0.3Ω

• ±7.5% CC Accuracy

− Compensation of Input /Output Voltage Change

− Temperature Compensation

− Independent of inductance and Inductor DCR

• 2% Feedback Voltage Accuracy

• Up to 92% Efficiency

• Advanced Feature Set

− Integrated Soft Start

− Thermal Shutdown

− Secondary Cycle-by-Cycle Current Limit

− Protection Against Shorted ISET Pin

• SOP-8EP Package

APPLICATIONS

• Car Charger/ Adaptor

• Rechargeable Portable Devices

• General-Purpose CC/CV Supply

GENERAL DESCRIPTION

ACT4533 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.

ACT4533 provides up to 3A output current at

125kHz switching frequency.

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 ACT4533 achieves

higher efficiency than traditional constant current

switching regulators by eliminating its associated

power loss.

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.

ACT4533

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

Output Current (mA)

0

400

800

1200

1600

2000

2400

2800

6.0

5.0

4.0

3.0

2.0

1.0

0.0

CC/CV Curve

VIN = 24V

VIN = 18V

Rev 1, 25-Feb-13

VIN = 12V

Podobny numer części - ACT4533

Producent	Numer części	Arkusz danych	Szczegółowy opis
Active-Semi, Inc	ACT4533A	452Kb / 18P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 14-Aug-13
Qorvo, Inc	ACT4533AB	3Mb / 19P	Wide Input Sensorless CC/CV Step-Down DC/DC Converter Rev. B, January 2025
Active-Semi, Inc	ACT4533AYH-T	452Kb / 18P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 14-Aug-13
	ACT4533AYH-T	452Kb / 17P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 14-Aug-13
	ACT4533AYH-T	452Kb / 17P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 14-Aug-13

More results

Podobny opis - ACT4533

Producent	Numer części	Arkusz danych	Szczegółowy opis
Active-Semi, Inc	ACT4513	664Kb / 15P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 6, 29-Jul-11
	ACT4514	472Kb / 16P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 1, 21-Jul-11
	ACT4513	673Kb / 15P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 7, 14-Nov-12
	ACT4515	463Kb / 16P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 6, 14-Nov-12
	ACT4513	678Kb / 16P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 7, 14-Nov-12
	ACT4515	462Kb / 17P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 6, 14-Nov-12
	ACT4533A	452Kb / 18P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 14-Aug-13
	ACT4523A	400Kb / 15P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 25-Jul-13
	EA4533AYH	452Kb / 17P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 14-Aug-13
	EA4533BYH	452Kb / 17P	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter Rev 0, 14-Aug-13

More results

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