参数资料
型号: PCA9531D,112
厂商: NXP Semiconductors
文件页数: 5/27页
文件大小: 0K
描述: IC LED DRIVER RGB 16-SOIC
产品培训模块: LED Controllers
I²C Bus Fundamentals
标准包装: 50
拓扑: 开路漏极,PWM
输出数: 8
内部驱动器:
类型 - 主要: 背光,LED 闪烁器
类型 - 次要: RGB
频率: 400kHz
电源电压: 2.3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SO
包装: 管件
工作温度: -40°C ~ 85°C
产品目录页面: 825 (CN2011-ZH PDF)
配用: 568-4003-ND - DEMO BOARD LED DIMMER
568-3615-ND - DEMO BOARD I2C
其它名称: 568-3369-5
935274731112
PCA9531D
NXP Semiconductors
Table 2.
Pin description …continued
PCA9531
8-bit I 2 C-bus LED dimmer
Symbol
Pin
SO16,
TSSOP16
HVQFN16
Description
V SS
LED4
LED5
LED6
LED7
RESET
SCL
SDA
V DD
8
9
10
11
12
13
14
15
16
6 [1]
7
8
9
10
11
12
13
14
supply ground
LED driver 4
LED driver 5
LED driver 6
LED driver 7
reset input (active LOW)
serial clock line
serial data line
supply voltage
[1]
HVQFN16 package die supply ground is connected to both V SS pin and exposed center pad. V SS pin must
be connected to supply ground for proper device operation. For enhanced thermal, electrical, and board
level performance, the exposed pad needs to be soldered to the board using a corresponding thermal pad
on the board and for proper heat conduction through the board, thermal vias need to be incorporated in the
PCB in the thermal pad region.
6. Functional description
Refer to Figure 1 “Block diagram of PCA9531” .
6.1 Device address
Following a START condition, the bus master must output the address of the slave it is
accessing. The address of the PCA9531 is shown in Figure 5 . To conserve power, no
internal pull-up resistors are incorporated on the hardware selectable address pins and
they must be pulled HIGH or LOW.
slave address
1
1
0
0
A2
A1
A0 R/W
fixed
hardware
selectable
002aac505
Fig 5.
PCA9531 slave address
The last bit of the address byte de?nes the operation to be performed. When set to logic 1
a read is selected, while a logic 0 selects a write operation.
PCA9531_6
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 06 — 19 February 2009
5 of 27
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