RT9284APJ5 datasheet(7/14 Pages) RICHTEK

Part #	RT9284APJ5

Description	Tiny Package, High Performance, Constant Current Switching Regulator for White LED

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

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7 / 14 page

RT9284A/B

DS9284A/B-05 August 2007

www.richtek.com

Dimming Operation

Time (400

μs/Div)

IIN

ILED

(5V/Div)

(10mA/Div)

f = 1kHz, Duty = 50%

4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10

μH

(100mA/Div)

Switching Frequency vs. Temperature

1.05

1.1

1.15

1.2

1.25

1.3

1.35

1.4

1.45

1.5

-40 -30 -20 -10

1020 304050 6070 8090

Temperature (

°C)

Switching Current vs. Input Voltage

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

3.25 3.5 3.75

4.25 4.5 4.75

5.25 5.5

Input Voltage (V)

-45

°C

Dimming Operation

Time (2ms/Div)

IIN

ILED

(5V/Div)

(10mA/Div)

f = 100Hz, Duty = 50%

4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10

μH

(50mA/Div)

Dimming Operation

Time (40

μs/Div)

IIN

ILED

(5V/Div)

(10mA/Div)

f = 10kHz, Duty = 50%

4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10

μH

(100mA/Div)

Feedback Voltage vs. Temperature

250.6

250.8

251

251.2

251.4

251.6

251.8

252

252.2

-40 -30 -20 -10

10203040 506070 8090

Temperature (

°C)

RT9284APJ5 Datasheet(PDF) 7 Page - Richtek Technology Corporation

RT9284APJ5 Datasheet(HTML) 7 Page - Richtek Technology Corporation

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