LP3943 datasheet(15/24 Pages) TI2

Numer części	LP3943

Szczegółowy opis	LP3943 16-Channel RGB, White-LED Driver with Independent SMBUS/I2C String Control

PDF	24 Pages

Scroll/Zoom	100%

Producent	TI2 [Texas Instruments]

Strona internetowa	https://www.ti.com

Logo

15 / 24 page

Programming Example:

• Dim LEDs 0 to 7 at 1Hz at 25% duty cycle

• Dim LEDs 8 to 12 at 5Hz at 50% duty cycle

• Set LEDs 13, 14 and 15 off

• Step 1: Set PSC0 to achieve DIM0 of 1 s

• Step 2: Set PWM0 duty cycle to 25%

• Step 3: Set PSC1 to achieve DIM1 of 0.2 s

• Step 4: Set PWM1 duty cycle to 50%

• Step 5: Set LEDs 13, 14 and 15 off by loading the data into LS3 register

• Step 6: Set LEDs 0 to 7 to point to DIM0

• Step 7: Set LEDs 8 to 12 to point to DIM1

Table 6-13. Programming Details

STEP

DESCRIPTION

SET TO (HEX)

Set DIM0 = 1 s

1 = (PSC0 + 1)/160

PSC0 = 159

PSC0

0x09F

Set duty cycle to 25%

Duty Cycle = PWM0/256

PWM0 = 64

PWM0

0x40

Set DIM1 = 0.2s

0.2 = (PSC1 + 1)/160

PSC1 = 31

PSC1

0x1F

Set duty cycle to 50%

Duty Cycle = PWM1/256

PWM1 = 128

PWM1

0x80

LEDs 13, 14 and 15 off

Output = HIGH

LS3

0x03

LEDs 0 to 7

Output = DIM0

LS0, LS1

LS0 = 0xAA

LS1 = 0xAA

LEDs 8 to 12

Output = DIM1

LS2, LS3

LS2 = 0xFF

LS3 = 0x03

www.ti.com

LP3943

SNVS256E – NOVEMBER 2003 – REVISED OCTOBER 2024

Submit Document Feedback

Product Folder Links: LP3943

LP3943 Arkusz danych(PDF) 15 Page - Texas Instruments

LP3943 Arkusz danych(HTML) 15 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Arkusz danych Pobierz

Link URL