pca9685 NXP Semiconductors, pca9685 Datasheet - Page 36

• Manufacturer Part Number: pca9685
• Description: 16-channel, 12-bit Pwm Fm+ I 2c-bus Led Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9685_1
Product data sheet
Fig 27. LCD backlighting application
(1) Resistor value should be chosen by referencing Section 7 of UM10204, “I
(2) OE requires pull-up resistor if control signal from the master is open-drain.
I
Remark: Set INVRT = 0, OUTDRV = 1, OUTNE = 01 (MODE2 register bits) for this configuration.
user manual” .
2
C-bus address = 1010 101x.
ASIC/MICRO
V
DD
= 2.5 V, 3.3 V or 5.0 V
SDA
SCL
OE
Rev. 01 — 24 July 2008
(1)
LED supply
(1)
16-channel, 12-bit PWM Fm+ I
10 k (2)
V
IN
SDA
SCL
OE
EXTCLK
A0
A1
A2
A3
A4
A5
V
SWITCH MODE
SS
REGULATOR
CONSTANT
CURRENT
PCA9685
V
DD
002aac828
LED10
LED11
LED12
LED13
LED14
LED15
LED0
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
LED9
SENSOR
LIGHT
FB
OUT
2
C-bus LED controller
2
C-bus specification and
PCA9685
© NXP B.V. 2008. All rights reserved.
R sense
I
constant
LED
string
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