SC654 datasheet(7/22 Pages) SEMTECH

Part #	SC654

Description	Light Management Unit for 6 LEDs with SemPulseTM Interface

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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7

Typical Characteristics (continued)

SC654

1ms/div

Output Short Circuit Current Limit

V

OUT

(1V/div)

I

OUT

(50mA/div)

Backlight Accuracy (6 LEDs) — 12mA Each

-8

-6

-4

-2

0

2

4

6

8

2.7

3

3.3

3.6

3.9

4.2

ACC Max %

ACC Min %

VIN (V)

Ripple — 2x Mode

20μs/div

V

IN

(100mV/div)

V

OUT

(100mV/div)

I

BL

(10mA/div)

C

IN

= C

OUT

= 4.7μF, V

IN

= 2.9V, 6 LEDs — 15mA each

Ripple — 1x Mode

20μs/div

V

IN

(100mV/div)

V

OUT

(100mV/div)

I

BL

(10mA/div)

C

IN

= C

OUT

= 4.7μF, 6 LEDs, — 15mA each

Ripple — 1.5x Mode

20μs/div

V

IN

(100mV/div)

V

OUT

(100mV/div)

I

BL

(10mA/div)

Output Open Circuit Protection

20μs/div

V

BL

(500mV/div)

V

OUT

(1V/div)

I

BL

(10mA/div)

0

C

IN

= C

OUT

= 4.7μF, V

IN

= 2.9V, 6 LEDs, — 15mA each

0

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