IREF

IREF

IREF

SET

V

R

K

I

u

Bank A

CH3/6/9

Bank B

CH4/7/10

Bank C

CH5/8/11

Independent

13

LP5009, LP5012

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SLVSEH2 – MAY 2019

Product Folder Links: LP5009 LP5012

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Copyright © 2019, Texas Instruments Incorporated

Feature Description (continued)

Table 1. Bank Number and LED Number Assignment

OUT NUMBER

BANK NUMBER

RGB LED MODULE NUMBER

OUT0

Bank A

LED0

OUT1

Bank B

OUT2

Bank C

OUT3

Bank A

LED1

OUT4

Bank B

OUT5

Bank C

OUT6

Bank A

LED2

OUT7

Bank B

OUT8

Bank C

OUT9 (LP5012 only)

Bank A

LED3

OUT10 (LP5012 only)

Bank B

OUT11 (LP5012 only)

Bank C

With the bank control configuration, the LP50xx device enables users to achieve smooth and live LED effects

globally with an ultrasimple software effort. Figure 7 shows an example using LED0 as an independent RGB

indicator and others with group breathing effect.

Figure 7. Bank PWM Control Example

8.3.3 Current Range Setting

can be calculated by Equation 1.

where:

•

•

(1)

With the IREF pin floating, the output current is close to zero. With the IREF pin shorted to GND, the LP50xx