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PCA9685 Datasheet(PDF) 36 Page - NXP Semiconductors

Part # PCA9685
Description  16-channel, 12-bit PWM Fm I2C-bus LED controller
PDF  50 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9685 Datasheet(HTML) 36 Page - NXP Semiconductors

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PCA9685_2
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 16 July 2009
36 of 50
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
I2C-bus address = 1010 101x.
Remark: Set INVRT = 0, OUTDRV = 1, OUTNE = 01 (MODE2 register bits) for this configuration.
(1) Resistor value should be chosen by referencing Section 7 of
UM10204, “I2C-bus specification and
user manual”.
(2) OE requires pull-up resistor if control signal from the master is open-drain.
Fig 27. LCD backlighting application
PCA9685
LED0
LED1
SDA
SCL
OE
VDD = 2.5 V, 3.3 V or 5.0 V
ASIC/MICRO
002aac828
SDA
SCL
(1)
OE
(1)
LED2
LED3
A0
A1
A2
VDD
A3
A4
A5
VSS
10 k
Ω(2)
LED4
LED5
LED6
LED7
LED8
LED9
LED10
LED11
LED12
LED13
LED14
LED15
CONSTANT
CURRENT
SWITCH MODE
REGULATOR
FB
OUT
VIN
Iconstant
LIGHT
SENSOR
LED supply
Rsense
LED
string
EXTCLK



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