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MP1519DQL

1x, 1.5x, 2x High Efficiency Charge Pump 3 White LED Driver

Monolithic Power Systems 

TM

MP1519L – 1X, 1.5X, 2X CHARGE PUMP 3 WHITE LED DRIVER

TYPICAL PERFORMANCE CHARACTERISTICS

Voltage Ripple

in 1.5x Mode

3 x 10mA LEDs

VBATT

20mV/div.

VLEDC

20mV/div.

Startup in 1.5x Mode

3 x 10mA LEDs

VEN

2V/div.

VLEDC

1V/div.

IBATT

100mA/div.

Analog Dimming

Circuit of Figure 3, VBATT = 3.6V

16

14

12

10

8

6

4

2

0

0

1

2

3

DC VOLTAGE (V)

Startup in 1x Mode

3 x 10mA LEDs

VEN

2V/div.

VLEDC

1V/div.

IBATT

100mA/div.

LED Current Matching

12

LED3

11

10

9

LED2

LED1

8

7

6

2.5 3.0 3.5 4.0 4.5

SUPPLY VOLTAGE (V)

MP1519L Rev. 1.3

www.MonolithicPower.com

3

7/27/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

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