Diodes AP8802H Manual do Utilizador descarregar pdf (Página 4)

AP8802H

60V 1A LED STEP-DOWN CONVERTER

AP8802H

Document number: DS32227 Rev. 6 - 2

4 of 14

www.diodes.com

May 2012

PRELIMINARY

NEW PRODUCT

Typical Characteristics

INPUT VOLTAGE (V)

Figure. 2 Supply Current (not switching) vs. Input Voltage

06055510 15 20 25 30 35 40 5045

0.1

0.3

0.2

0.7

0.6

0.9

0.8

0.5

0.4

N-SWI

(mA)

AMBIENT TEMPERATURE (°C)

Figure. 3 V vs. Ambient Temperature

CTRL

-40 125-25 110-10 5 20 35 50 65 9580

1.244

1.252

1.250

1.256

1.254

1.248

1.246

L V

E (V)

AMBIENT TEMPERATURE (°C)

Figure. 4 R vs. Ambient Temperature

DS(ON)

-40 125-25 110-10 5 20 35 50 65 9580

0.8

0.6

1.0

0.4

0.2

L V

E (V)

0 0.5 1.0 1.5 2.0 2.5

R RESISTANCE ( )

SET

Figure. 5 LED Current vs. R

SET

1000

900

800

700

600

500

200

100

400

300

LED

(mA)

0 0.5 1.0 1.5 2.0 2.5

CTRL VOLTAGE (V)

Figure. 6 LED Current vs. V

CTRL

200

1000

1200

600

800

400

LED CURRENT (mA)

R = 0.2

SET

R = 0.3

SET

R = 0.68

SET

CTRL VOLTAGE (V)

Figure. 7 Switching Frequency vs. V

CTRL

02.50.5 1.0 1.5 2.0

500

400

800

700

100

SWI

300

600

200

1 2 3 4 5 6 7 8 9 ... 13 14

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