ACT4065ASH-T 查看數據表（PDF） - Unspecified

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ACT4065ASH-T

High Input 2A Step Down Converter

Unspecified 

®

FEATURES

• 2A Output Current

• Up to 95% Efficiency

• 6.0V to 30V Input Range

• 210kHz Switching Frequency

• Adjustable Output Voltage

• Cycle-by-Cycle Current Limit Protection

• Thermal Shutdown Protection

• Frequency Foldback at Short Circuit

• Stability with Wide Range of Capacitors,

Including Low ESR Ceramic Capacitors

• SOP-8 Package

APPLICATIONS

• TFT LCD Monitors

• Portable DVDs

• Car-Powered or Battery-Powered Equip-

ments

• Set-Top Boxes

• Telecom Power Supplies

• DSL and Cable Modems and Routers

• Termination Supplies

ACT4065A

Rev 0, 23-Apr-12

High Input 2A Step Down Converter

GENERAL DESCRIPTION

The ACT4065A is a current-mode step-down

DC/DC converter that generates up to 2A output

current at 210kHz switching frequency.

The ACT4065A is highly efficient with peak effi-

ciency at 95% when in operation. Protection fea-

tures include cycle-by-cycle current limit, thermal

shutdown, and frequency foldback at short circuit.

The ACT4065A is available in SOP-8 package and

requires very few external devices for operation.

Note: ACT4065A is the drop-in replacement for

ACT4065 with feedback resistance value change.

Innovative PowerTM

Efficiency vs. Load current

95

VIN = 12V

90

85

VIN = 24V

80

75

70

10

VOUT = 5V

100

1000

Load Current (mA)

10000

-1-

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Copyright © 2012 Active-Semi, Inc.

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