TM
MP1519L – 1X, 1.5X, 2X CHARGE PUMP 3 WHITE LED DRIVER
PIN FUNCTIONS
Pin #
1, 2
3, 10
4
5, 13
6
7
8
9
11
12
14
15
16
Name Description
NC No Connect.
GND Ground.
Charge Pump Capacitor #1 Positive Node. Connect the positive side of the #1 charge pump
C1A
capacitor to C1A. Typical applications require C1 to be 1µF.
Battery Power Input. Connect the 2.5V to 5.5V input source between BATT and GND. Bypass
BATT
BATT to GND with a 1µF or greater capacitor.
Charge Pump Capacitor #2 Positive Node. Connect the positive side of the #2 charge pump
C2A
capacitor to C2A. Typical applications require C2 to be 1µF.
Charge Pump Capacitor #1 Negative Node. Connect the negative side of the #1 charge pump
C1B
capacitor to C1B.
LED Common for the Cathodes. Connect the cathodes of the LEDs to LEDC and to a 4.7µF
LEDC bypass capacitor. Do not connect to any other ground, supply or pin.
Note: Exposed pad on backside is connected to this pin. Do Not Ground.
Charge Pump Capacitor #2 Negative Node. Connect the negative side of the #2 charge pump
C2B
capacitor to C2B.
LED Current Adjust Input. Connect a resistor between RADJ and GND to set the LED current.
RADJ
All of the LEDs regulate at the same current. See
Setting the LED Current.
Enable Input. Drive EN high to turn on the MP1519L, drive EN low to shutdown the MP1519L.
EN
To use burst-mode brightness control, drive EN with a PWM signal. See
Burst Mode Dimming.
#1 LED Driver. Connect the #1 LED between LED1 and LEDC, with the anode at LED1, and
LED1
the cathode at LEDC.
#2 LED Driver. Connect the #2 LED between LED2 and LEDC, with the anode at LED2, and
LED2
the cathode at LEDC.
#3 LED Driver. Connect the #3 LED between LED3 and LEDC, with the anode at LED3, and
LED3
the cathode at LEDC.
MP1519L Rev. 1.3
7/27/2006
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