PCA9532D: 16位I2C总线LED调光器

PCA9532是一款16位I²C总线和SMBus I/O扩展器,针对红/绿/蓝(RGB)色彩混合和背光应用中的独立256阶调光LED进行了优化。

PCA9532集成内部振荡器,具有两个用户可编程闪烁速率和占空比,并耦合至输出PWM信号。 通过将闪烁速率设为足够高(100 Hz以上,直到无法以肉眼看出闪烁),然后利用占空比改变LED开启时间,从而改变流经LED的平均电流,即可控制LED亮度。

初始建立序列编程为每个独立PWM设置两个闪烁速率/占空比。此后,仅需总线主机发出一条命令,便可对单个LED执行开启、关闭、闪烁速率1或闪烁速率2等操作。根据编程设置的频率和占空比,闪烁速率1和闪烁速率2将使LED表现为不同的亮度,或以最长为1.69 s的周期闪烁。开漏输出以每位25 mA以及每封装200 mA(每8位100 mA)的最大输出吸电流直接驱动LED。

若要以比1.69 s更长的周期闪烁LED,则总线主机(MCU、MPU、DSP、芯片组等)必须发送重复命令以开启和关闭LED,与使用一般I/O扩展器(如恩智浦PCF8575或PCA9555)所需完成的操作相同。所有未用来控制LED的位都可用作通用并行输入/输出(GPIO)扩展,当需要额外I/O作为ACPI电源开关、传感器、按钮、报警监控、风扇等功能时可提供简易解决方案。

低电平有效硬件复位针脚(RESET)和上电复位(POR)可将寄存器初始化为它们的默认状态(全零),使位变为高电平(LED关闭)。

PCA9532上的3个硬件地址针脚允许在一条总线上运行8个器件。

Outline 3d SOT137-1
数据手册 (1)
名称/描述Modified Date
16-bit I2C-bus LED dimmer (REV 4.1) PDF (311.0 kB) PCA9532 [English]22 Aug 2016
应用说明 (3)
名称/描述Modified Date
Level shifting techniques in I2C-bus design (REV 1.0) PDF (52.0 kB) AN10441 [English]20 Jun 2007
I2C manual (REV 1.0) PDF (4.2 MB) AN10216 [English]27 Mar 2003
I2C Devices for LED Display Control (REV 1.0) PDF (1.0 MB) AN264 [English]22 Jul 2002
用户指南 (5)
名称/描述Modified Date
PCA9532 demonstration board OM13528 (REV 1.0) PDF (405.0 kB) UM10988 [English]04 May 2016
I2C-bus specification and user manual (REV 6.0) PDF (1.4 MB) UM10204 [English]28 Apr 2014
I2C-bus specification and user manual (REV 5.0) PDF (1.6 MB) UM10204_JA [English]03 Apr 2013
PCA9633 demonstration board OM6282 (REV 1.0) PDF (337.0 kB) UM10317 [English]15 Dec 2008
I2C Demonstration Board 2005-1 Quick Start Guide (REV 1.0) PDF (261.0 kB) UM10206 [English]13 Jun 2006
手册 (4)
名称/描述Modified Date
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns (REV 1.0) PDF (3.5 MB) 75017540 [English]01 Aug 2014
LED controllers: Voltage-switch drivers, constant-current drivers, and Flash LED drivers (REV 1.0) PDF (2.7 MB) 75017588 [English]03 Jul 2014
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... (REV 1.0) PDF (1.1 MB) 75016543 [English]01 Jun 2008
LED dimming with GPIO expansion; NXP® 2/4/8/16-bit I2C/SMBus LED dimmers PCA9530/31/32/33 (REV 1.0) PDF (212.0 kB) 75016073 [English]01 Jun 2007
封装信息 (1)
名称/描述Modified Date
plastic small outline package; 24 leads; body width 7.5 mm (REV 1.0) PDF (379.0 kB) SOT137-1 [English]08 Feb 2016
包装 (1)
名称/描述Modified Date
SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 4.0) PDF (235.0 kB) SOT137-1_118 [English]12 Apr 2013
报告或演示文稿 (1)
名称/描述Modified Date
design_con_2003_tecforum_i2c_b_1 (REV 0.1) PDF (4.2 MB) DESIGN_CON_2003_TECFORUM_I2C_B_1 [English]27 Jan 2003
支持信息 (1)
名称/描述Modified Date
Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English]08 Oct 2009
IBIS
订购信息
型号状态Package version应用EnableOperating Temperature (Cel)PWMsI2C-bus interfaceReset input pinI2C-bus (kHz)Operating voltage (VDC)Max Sink Current per bit (mA)No of AddressesMax Sink Current, per package (mA)Number of bits
PCA9532DActiveSOT137-1-40~852 (160 Hz to 1.6 sec)yes4002.3~5.525820016
封装环保信息
产品编号封装说明Outline Version回流/波峰焊接包装产品状态部件编号订购码 (12NC)Marking化学成分RoHS / 无铅 / RHF无铅转换日期EFRIFR(FIT)MTBF(小时)MSLMSL LF
PCA9532DSOT137-1SO-SOJ-WAVEReel 13" Q1/T1ActivePCA9532D,118 (9352 728 38118)PCA9532DPCA9532Dweek 5, 20050.02.05E811
Bulk PackActivePCA9532D,112 (9352 728 38112)PCA9532DPCA9532Dweek 5, 20050.02.05E811
16-bit I2C-bus LED dimmer PCA9532
Level shifting techniques in I2C-bus design pca9685pw
I2C manual se98apw
I2C Devices for LED Display Control PCA9553
PCA9532 demonstration board OM13528 PCA9532
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
PCA9633 demonstration board OM6282 pca9685pw
I2C Demonstration Board 2005-1 Quick Start Guide pca9685pw
NXP® I2C-bus solutions 2014: Smart, simple solutions for the 12 most common design concerns pca9685pw
LED controllers: Voltage-switch drivers, constant-current drivers, and Flash LED drivers pca9685pw
Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
LED dimming with GPIO expansion; NXP® 2/4/8/16-bit I2C/SMBus LED dimmers PCA9530/31/32/33 PCA9551
design_con_2003_tecforum_i2c_b_1 lm75a
PCA9532 IBIS model PCA9532PW
plastic small outline package; 24 leads; body width 7.5 mm 74LVC4245A_Q100
Footprint for wave soldering NPIC6C596A_Q100
SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... 74LVC4245A_Q100
PCA9552