数据手册DataSheet 下载PCA9532D 16位I2C总线LED调光器.pdf

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。

产品特点
  • 16个LED驱动器(开、关、闪光速率可编程)
  • 2个可选、完全可编程闪烁速率(频率和占空比)范围为0.591 Hz至152 Hz(1.69 s和6.58 ms)
  • 256阶亮度
  • 未用作LED驱动器的输入/输出可用作常规GPIO
  • 集成内部振荡器,无需外部元件
  • I²C总线接口逻辑兼容SMBus
  • 内部上电复位
  • SCL/SDA输入端提供噪音滤波器
  • 低电平有效复位输入
  • 16个开漏输出直接驱动LED至25 mA
  • 受控边沿速率可最大程度降低接地反弹
  • 上电时无干扰
  • 支持热插拔
  • 低待机电流
  • 电源电压工作范围:2.3 V至5.5 V
  • 时钟频率:0 Hz至400 kHz
  • ESD保护:超过2000 V HBM(符合JESD22-A114标准),超过150 V MM(符合JESD22-A115标准)以及超过1000 V CDM(符合JESD22-C101标准)
  • 已完成JEDEC标准JESD78闩锁测试(超过100 mA)
  • 封装类型:SO24、TSSOP24、HVQFN24
订购型号
订购型号封装Outline versionReflow-/Wave soldering包装产品状态标示订购器件的编号
PCA9532DSO24 (SOT137-1)sot137-1_posot137-1_fr
SO-SOJ-WAVE
Reel Pack, SMD, 13" Q1/T1激活PCA9532DPCA9532D,118( 9352 728 38118 )
品质、可靠性及RoHS化学成分
订购型号订购器件的编号RoHS / RHF无铅开始日期EFRIFR (FIT)MTBF(小时)潮湿敏感度等级MSL LF
PCA9532DPCA9532D,118week 5, 20050.02.05E811
PCA9532DPCA9532D,112week 5, 20050.02.05E811
产品技术资料
文档标题类型分类格式更新日期
PCA9532 (中文):16-bit I2C-bus LED dimmerData sheetpdf2009-03-17
AN10441:Level shifting techniques in I2C-bus designApplication notepdf2007-06-20
AN10216:I2C manualApplication notepdf2003-03-27
AN264:I2C Devices for LED Display ControlApplication notepdf2002-07-22
75016543:Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliancesBrochurepdf2008-06-01
75017588:LED controllers: Voltage-switch drivers, constant-current drivers, and Flash LED driversBrochurepdf2014-07-03
75016073:LED dimming with GPIO expansion; NXP 2/4/8/16-bit I2C/SMBus LED dimmers PCA9530/31/32/33Leafletpdf2007-06-01
75017424:NXP I2C-bus solutions 2013: Smart, simple solutions for the 12 most common design concernsLeafletpdf2013-05-23
design_con_2003_tecforum_i2c_bus_overview:DesignCon 2003 TecForum I 2 C Bus OverviewOther typepdf2003-01-27
UM10204:I2C-bus specification and user manualUser manualpdf2014-04-28
UM10206:I2C Demonstration Board 2005-1 Quick Start GuideUser manualpdf2006-06-12
UM10317:PCA9633 demonstration board OM6282User manualpdf2008-12-15
UM10204_JA:I2C-bus specification and user manualUser manualpdf2013-04-03
SOT137-1_118:SO24; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packingpdf2013-04-12
SO-SOJ-WAVE:Footprint for wave solderingWave solderingpdf2009-10-08
sot137-1_po:plastic small outline package; 24 leads; body width 7.5 mmOutline drawingpdf2009-10-08
sot137-1_fr:Footprint for reflow soldering SOT137-1Reflow solderingpdf2010-01-15
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