PCA9551D: 8位I2C总线LED驱动器，具有可编程闪烁速率
PCA9551 LED闪烁器可在I²C总线和SMBus应用中闪烁LED，而在这些应用中有必要限制总线流量或释放I²C总线主机（MCU、MPU、DSP、芯片组等）定时器。该器件的独特之处是集成内部振荡器，提供两种可编程闪烁速率。若要使用普通的I/O扩展器（如PCF8574或PCA9554）闪烁LED，则总线主机必须发送重复命令，开启和关闭LED。这可极大地增加I²C总线上的流量，并耗尽主机的其中一个定时器。而PCA9551 LED闪烁器仅需初始设置命令便可编程闪烁速率1和闪烁速率2（如频率和占空比），用于各独立输出。在此之后，只需总线主机发出一条命令，便可开启或关闭各开漏输出，或者在闪烁速率1或闪烁速率2之间循环切换。最大输出吸电流为每位25 mA，以及每封装100 mA。
任何未用于控制LED的位都可用作通用并行输入/输出(GPIO)扩展。
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）。
PCA9551上的3个硬件地址针脚允许在一条总线上运行8个器件。
较新的超快速模式(Fm+) PCA9634 8位LED控制器为每个通道提供独立的PWM调光控制，以获得更佳的色彩混合能力；而全局PWM用于同时对所有通道进行调光或闪烁。共有126种可能的地址组合，并且最大输出吸电流为每位25 mA、每封装200 mA。
PCA9551D: 产品结构框图
sot109-1_3d
数据手册 (1)
| 名称/描述 | Modified Date |
|---|---|
| 8-bit I2C-bus LED driver with programmable blink rates (REV 8.0) PDF (156.0 kB) PCA9551 [English] | 31 Jul 2008 |
应用说明 (4)
| 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 2002-1A Evaluation Board (REV 2.0) PDF (2.2 MB) AN10146 [English] | 26 Feb 2003 |
| I2C Devices for LED Display Control (REV 1.0) PDF (1.0 MB) AN264 [English] | 22 Jul 2002 |
用户指南 (4)
| 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 |
| 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 (6)
| 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 |
| Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 (REV 1.0) PDF (1.8 MB) 75016531 [English] | 01 Jul 2008 |
| 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 blinking with GPIO expansion; NXP® 2/4/8/16-bit I2C/SMBus LED blinkers PCA9550/51/52/53 (REV 1.0) PDF (219.0 kB) 75016021 [English] | 01 Jun 2007 |
| 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; 16 leads; body width 3.9 mm (REV 1.0) PDF (192.0 kB) SOT109-1 [English] | 08 Feb 2016 |
包装 (1)
| 名称/描述 | Modified Date |
|---|---|
| SO16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 4.0) PDF (210.0 kB) SOT109-1_118 [English] | 24 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 (2)
| 名称/描述 | Modified Date |
|---|---|
| Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English] | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English] | 08 Oct 2009 |
IBIS
- PCA9551 IBIS model (REV 1.0) ibs PCA9551_1 9/2/2014
订购信息
| 型号 | 状态 | Package version | 应用 | Enable | Operating Temperature (Cel) | PWMs | I2C-bus interface | Reset input pin | I2C-bus (kHz) | Operating voltage (VDC) | Max Sink Current per bit (mA) | No of Addresses | Max Sink Current, per package (mA) | Number of bits |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9551D | Active | SOT109-1 | -40~85 | 2 (40 Hz to 6.4 sec) | yes | 400 | 2.3~5.5 | 25 | 8 | 100 | 8 |
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 | EFR | IFR(FIT) | MTBF（小时） | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9551D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 | Active | PCA9551D,118 (9352 716 95118) | PCA9551D | PCA9551D |    | week 6, 2004 | 0.0 | 2.0 | 5E8 | 1 | 1 |
| Bulk Pack | Active | PCA9551D,112 (9352 716 95112) | PCA9551D | PCA9551D | | week 6, 2004 | 0.0 | 2.0 | 5E8 | 1 | 1 |
- Level shifting techniques in I2C-bus design pca9685pw
- I2C manual se98apw
- I2C 2002-1A Evaluation Board lm75a
- I2C Devices for LED Display Control PCA9553
- 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
- Evaluate the I2C-bus with a comprehensive kit; NXP® I2C 2002-1A evaluation board kits OM6285 and OM6278 lm75a
- Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for... PMEG6010CE_AUTOMOTIVE
- LED blinking with GPIO expansion; NXP® 2/4/8/16-bit I2C/SMBus LED blinkers PCA9550/51/52/53 PCA9553
- 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
- PCA9551 IBIS model PCA9551PW
- plastic small outline package; 16 leads; body width 3.9 mm NPIC6C596A_Q100
- Footprint for reflow soldering NPIC6C596A_Q100
- Footprint for wave soldering NPIC6C596A_Q100
- SO16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... NPIC6C596A_Q100
- PCA9551
- SA614A
