LP5520 datasheet(30/46 Pages) TI1

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LP5520

SNVS440B – MAY 2007 – REVISED MARCH 2016

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current_control_B (03H) – Blue LED Current Control Register

cc_b[7]

cc_b[6]

cc_b[5]

cc_b[4]

cc_b[3]

cc_b[2]

cc_b[1]

cc_b[0]

rw-0

rw-1

rw-0

rw-1

rw-0

rw-1

rw-0

rw-1

pwm_brightness (04H) – Brightness Control Register

brc_off

bri[2]

bri[1]

bri[0]

r-0

rw-0

r-0

rw-0

brc_off

bri[2:0]

Bit 4

Bits 2-0

brc_off = 0 - stand-alone mode,

brightness is defined with external BRC signal

brc_off = 1 - brightness is defined with bri[2:0]

Control

Multiplier

Intensity %

0.008

0.8

0.016

1.6

0.031

3.1

0.063

6.3

100

0.125

12.5

101

0.250

110

0.500

111

1.000

100

boost_output (05H) – Boost Output Voltage Control Register

vprog[4]

vprog[3]

vprog[2]

vprog[1]

vprog[0]

r-0

rw-0

vprog[4:0]

Bits 4 - 0

Adjustment

vprog[4:0]

Typical boost output voltage (V)

00101

5.0

00110

6.0

00111

7.0

01000

8.0

01001

9.0

01010

10.0

01011

11.0

01100

12.0

01101

13.0

01110

14.0

01111

15.0

10000

16.0

10001

17.0

10010

18.0

10011

19.0

10100

20.0

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