PCA9552: 16位I2C总线LED驱动器，具有可编程闪烁速率

PCA9552 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PCA9552 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（即频率和占空比），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200 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）。

PCA9552上的3个硬件地址针脚允许在一条总线上运行8个器件。

PCA9552: 产品结构框图

Outline 3d SOT616-1

数据手册 (1)

名称/描述	Modified Date
16-bit I2C-bus LED driver with programmable blink rates (REV 5.0) PDF (159.0 kB) PCA9552 [English]	09 Mar 2006

应用说明 (2)

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 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 (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 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

封装信息 (3)

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
plastic thin shrink small outline package; 24 leads; body width 4.4 mm (REV 1.0) PDF (353.0 kB) SOT355-1 [English]	08 Feb 2016
plastic thermal enhanced very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.85 mm (REV 1.0) PDF (202.0 kB) SOT616-1 [English]	08 Feb 2016

包装 (3)

名称/描述	Modified Date
HVQFN24; reel pack; standard product orientation; 12NC ending 118 (REV 1.0) PDF (196.0 kB) SOT616-1_118 [English]	16 Jan 2014
TSSOP24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.1) PDF (227.0 kB) SOT355-1_118 [English]	15 Apr 2013
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 (2)

名称/描述	Modified Date
Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English]	08 Oct 2009
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English]	08 Oct 2009

IBIS

PCA9552 IBIS model (REV 1.0) ibs PCA9552_1 9/2/2014

订购信息

型号	状态	Package version	Operating Temperature (Cel)	PWMs	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
PCA9552PW	Active	SOT355-1	-40~85	2 (40 Hz to 6.4 sec)	yes	400	2.3~5.5	25	8	200	16
PCA9552D	Active	SOT137-1	-40~85	2 (40 Hz to 6.4 sec)	yes	400	2.3~5.5	25	8	200	16
PCA9552BS	Active	SOT616-1	-40~85	2 (40 Hz to 6.4 sec)	yes	400	2.3~5.5	25	8	200	16

封装环保信息

产品编号	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	无铅转换日期	IFR(FIT)	MTBF（小时）	MSL	MSL LF
PCA9552D	SOT137-1	SO-SOJ-WAVE	Reel 13" Q1/T1	Active	PCA9552D,118 (9352 723 95118)	PCA9552D	PCA9552D	week 5, 2005	2.0	5E8	1	1
PCA9552D	SOT137-1	SO-SOJ-WAVE	Bulk Pack	Active	PCA9552D,112 (9352 723 95112)	PCA9552D	PCA9552D	week 5, 2005	2.0	5E8	1	1
PCA9552PW	SOT355-1	SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	PCA9552PW,118 (9352 723 94118)	PCA9552	PCA9552PW	week 12, 2005	2.0	5E8	1	1
PCA9552PW	SOT355-1	SSOP-TSSOP-VSO-WAVE	Bulk Pack	Active	PCA9552PW,112 (9352 723 94112)	PCA9552	PCA9552PW	week 12, 2005	2.0	5E8	1	1
PCA9552BS	SOT616-1		Reel 13" Q1/T1	Active	PCA9552BS,118 (9352 723 96118)	9552	PCA9552BS	Always Pb-free	2.0	5E8	1	1