MP1519DQL Ver la hoja de datos (PDF) - Monolithic Power Systems

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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

LEDC

Do not drive or force LEDC as it may be

shorted to ground or may be pumped down by

the controller in the MP1519L at any time.

Excessive capacitance on the LEDC node can

cause the internal controller to time out before

the charge pump can be ready. Missing the

timeouts will cause excessive pumping and a

loss of efficiency. The MP1519L requires C1

and C2 be of the same value and type.

TYPICAL APPLICATION CIRCUIT

BATT

MP1519L

5, 13

4

BATT C1A

ENABLE

12

EN

7

C1B

VDC

0V to 3V

GND

11

6

RADJ C2A

3, 10

GND

9

C2B

14

LED1

15

LED2

8

16

LEDC LED3

LED3 LED2 LED1

Figure 3—Analog Dimming Circuit

MP1519L Rev. 1.3

www.MonolithicPower.com

7

7/27/2006

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© 2006 MPS. All Rights Reserved.

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