PCA9634: 8位Fm+ I2C总线LED驱动器

PCA9634是一款I²C总线控制型8位LED驱动器,针对红/绿/蓝/黄(RGBA)色彩混合应用进行了优化。 每个LED输出都受控于自有的8位分辨率(256阶)固定频率独立PWM控制器,该控制器工作频率为97 kHz,占空比可在0 %至99.6 %范围内调节,允许将LED设为特定的亮度值。额外的8位分辨率(256阶)集群PWM控制器提供190 Hz的固定频率和范围从24 Hz到每10.73 s一次的可调节频率,占空比可调节范围为0 %至99.6 %,能以一个数值调光或闪烁全部LED。

每个LED输出均可关闭、开启(无PWM控制)、设为其各自的PWM控制器值或设为独立和集群PWM控制器值。LED输出驱动器编程设置为5 V时具有25 mA吸电流能力的开漏输出,或5 V时具有25 mA吸电流、10 mA源电流能力的图腾柱。PCA9634工作时的电源电压范围为2.3 V至5.5 V,输出具有5.5 V容差。 LED可直接连接LED输出(最高25 mA、5.5 V),而对于电流更大或电压更高的LED,也可采用外部驱动器配合极少量的分立式元件控制。

PCA9634是最新超快速模式(Fm+)系列首批LED控制器的其中一款产品。 Fm+器件具有更高的频率(高达1 MHz)和更密集的总线操作(高达4000 pF)。

低电平有效输出使能输入针脚(OE)允许异步控制LED输出,并且可用来将所有输出设为指定的I²C总线可编程逻辑状态。OE还可用作输出的外部PWM信号,这在需要通过软件控制对多个器件进行共同调光或闪烁时非常有用。

软件可编程LED集群和三个子集调用I²C总线地址允许全部或指定的PCA9634器件集群响应一般I²C总线地址,从而可实现诸如同时开启或关闭所有红灯LED的功能,或者滚动追逐效应(marquee chasing effect),最大程度减少I²C总线命令。 7个硬件地址针脚允许在一条总线上连接最多126个器件。

软件复位(SWRST)调用可让主机通过I²C总线复位PCA9634,与上电复位(POR)功能相同;后者可将寄存器初始化为它们的默认状态,将输出设为高电平(LED关闭)。 这便提供了方便而快捷的方法,将所有器件寄存器重新配置为相同条件。

PCA9634: 产品结构框图
sot662-1_3d
数据手册 (1)
名称/描述Modified Date
8-bit Fm+ I2C-bus LED driver (REV 7.0) PDF (290.0 kB) PCA9634 [English]13 Oct 2014
应用说明 (1)
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
用户指南 (5)
名称/描述Modified Date
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
PCA9634 demonstration board OM13327 (REV 1.0) PDF (956.0 kB) UM10537 [English]15 Mar 2012
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 (3)
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
封装信息 (3)
名称/描述Modified Date
plastic small outline package; 20 leads; body width 7.5 mm (REV 1.0) PDF (335.0 kB) SOT163-1 [English]08 Feb 2016
plastic thin shrink small outline package; 20 leads; body width 4.4 mm (REV 1.0) PDF (304.0 kB) SOT360-1 [English]08 Feb 2016
plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 x 5 x 0.85 mm (REV 1.0) PDF (209.0 kB) SOT662-1 [English]08 Feb 2016
包装 (3)
名称/描述Modified Date
HVQFN20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (266.0 kB) SOT662-1_118 [English]18 Apr 2013
SO20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 2.0) PDF (246.0 kB) SOT163-1_118 [English]15 Apr 2013
TSSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.0) PDF (225.0 kB) SOT360-1_118 [English]15 Apr 2013
支持信息 (3)
名称/描述Modified Date
Reflow Soldering Profile (REV 1.0) PDF (34.0 kB) REFLOW_SOLDERING_PROFILE [English]30 Sep 2013
Wave Soldering Profile (REV 1.0) PDF (20.0 kB) WAVE_SOLDERING_PROFILE [English]30 Sep 2013
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English]08 Oct 2009
IBIS
订购信息
型号状态Package versionOperating Temperature (Cel)PWMsI2C-bus interfaceI2C-bus (kHz)Operating voltage (VDC)Max Sink Current per bit (mA)No of AddressesMax Sink Current, per package (mA)Number of bits
PCA9634PWActiveSOT360-1-40~859 (8 x 97 kHz dim and 1 x 97 kHz dim or 24 Hz to 10.73 sec blink)Fast Mode Plus 30 mA SDA outputs for 4000 pF bus10002.3~5.5251262008
PCA9634DActiveSOT163-1-40~859 (8 x 97 kHz dim and 1 x 97 kHz dim or 24 Hz to 10.73 sec blink)Fast Mode Plus 30 mA SDA outputs for 4000 pF bus10002.3~5.5251262008
PCA9634BSActiveSOT662-1-40~859 (8 x 97 kHz dim and 1 x 97 kHz dim or 24 Hz to 10.73 sec blink)Fast Mode Plus 30 mA SDA outputs for 4000 pF bus10002.3~5.5251262008
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
PCA9634PWSOT360-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActivePCA9634PW,118 (9352 822 33118)PCA9634PCA9634PWAlways Pb-free0.02.05E811
Bulk PackActivePCA9634PW,112 (9352 822 33112)PCA9634PCA9634PWAlways Pb-free0.02.05E811
PCA9634BSSOT662-1Reel 13" Q1/T1ActivePCA9634BS,118 (9352 822 34118)9634PCA9634BSAlways Pb-free0.02.05E811
PCA9634DSOT163-1Reflow_Soldering_Profile Wave_Soldering_Profile
Reflow_Soldering_Profile Wave_Soldering_Profile
Reel 13" Q1/T1ActivePCA9634D,118 (9352 822 32118)PCA9634DPCA9634DAlways Pb-free0.02.05E811
Bulk PackActivePCA9634D,112 (9352 822 32112)PCA9634DPCA9634DAlways Pb-free0.02.05E811
8-bit Fm+ I2C-bus LED driver PCA9634
Level shifting techniques in I2C-bus design pca9685pw
I2C-bus specification and user manual pca9685pw
I2C-bus specification and user manual pca9685pw
PCA9634 demonstration board OM13327 PCA9634
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
PCA9634 IBIS model PCA9634PW
SOT360-1 LPC1112FDH20
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
Reel 13" Q1/T1 LPC824M201JDH20
plastic thermal enhanced very thin quad flat package; no leads; 20 terminals; body 5 x 5 x 0.85 mm bga3131
HVQFN20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... bga3131
SOT163-1 LPC1112FD20
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
Reel 13" Q1/T1 LPC812M101JD20
PCA9634
PCA9634
BGA3031
SA615