ACT4533 datasheet(13/16 Pages) ACTIVE-SEMI

部件名	ACT4533

功能描述	Wide-Input Sensorless CC/CV Step-Down DC/DC Converter

PDF	16 Pages

Scroll/Zoom	100%

制造商	ACTIVE-SEMI [Active-Semi, Inc]

网页	http://www.active-semi.com

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13 / 16 page

ACT4533

Rev 1, 25-Feb-13

Innovative Power

- 13 -

www.active-semi.com

SW vs. Output Voltage Ripple

TYPICAL PERFORMANCE CHARACTERISTICS CONT’D

Start up with EN

Load transient (80mA-1A-80mA)

Short Circuit

VIN = 24V

VOUT = 5V

IOUT = 2.1A

CH1

CH2

CH1: SW, 10V/div

CH2: VOUT Ripple, 50mV/div

TIME: 4µs/div

VIN = 12V

VOUT = 5V

IOUT = 2.1A

CH1

CH2

CH1: EN, 2V/div

CH2: VOUT, 2V/div

TIME: 400µs//div

Start up with EN

CH1

CH2

CH1: EN, 2V/div

CH2: VOUT, 2V/div

TIME: 400µs//div

VIN = 12V

VOUT = 5V

IISET = 2.1A

CH1

CH2

CH1: VOUT, 100mV/div

CH2: IOUT, 1A/div

TIME: 400µs/div

Load Transient (1A-2.1A-1A)

CH1

CH2

CH1: VOUT, 100mV/div

CH2: IOUT, 1A/div

TIME: 400µs/div

VIN = 12V

VOUT = 5V

IISET = 2.1A

CH1

CH2

CH1: VOUT, 2V/div

CH2: IOUT, 1A/div

TIME: 100µs/div

VIN = 24V

VOUT = 5V

IISET = 2.1A

VIN = 12V

VOUT = 5V

IISET = 2.1A

(L = 47µH, CIN = 10µF, COUT = 47µF, Ta = 25°C, RCOMP = 2.2k, CCOMP1 = 4.7nF, CCOMP2 = 47pF)

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