PCA9635
16-bit Fm+ I 2 C-bus LED driver
Rev. 07 — 16 July 2009
Product data sheet
1. General description
The PCA9635 is an I 2 C-bus controlled 16-bit LED driver optimized for
Red/Green/Blue/Amber (RGBA) color mixing applications. Each LED output has its own
8-bit resolution (256 steps) ?xed frequency individual PWM controller that operates at
97 kHz with a duty cycle that is adjustable from 0 % to 99.6 % to allow the LED to be set
to a speci?c brightness value. An additional 8-bit resolution (256 steps) group PWM
controller has both a ?xed frequency of 190 Hz and an adjustable frequency between
24 Hz to once every 10.73 seconds with a duty cycle that is adjustable from 0 % to 99.6 %
that is used to either dim or blink all LEDs with the same value.
Each LED output can be off, on (no PWM control), set at its individual PWM controller
value or at both individual and group PWM controller values. The LED output driver is
programmed to be either open-drain with a 25 mA current sink capability at 5 V or
totem-pole with a 25 mA sink, 10 mA source capability at 5 V. The PCA9635 operates with
a supply voltage range of 2.3 V to 5.5 V and the outputs are 5.5 V tolerant. LEDs can be
directly connected to the LED output (up to 25 mA, 5.5 V) or controlled with external
drivers and a minimum amount of discrete components for larger current or higher voltage
LEDs.
The PCA9635 is one of the ?rst LED controller devices in a new Fast-mode Plus (Fm+)
family. Fm+ devices offer higher frequency (up to 1 MHz) and more densely populated bus
operation (up to 4000 pF).
The active LOW Output Enable input pin (OE) allows asynchronous control of the LED
outputs and can be used to set all the outputs to a de?ned I 2 C-bus programmable logic
state. The OE can also be used to externally PWM the outputs, which is useful when
multiple devices need to be dimmed or blinked together using software control.
Software programmable LED Group and three Sub Call I 2 C-bus addresses allow all or
de?ned groups of PCA9635 devices to respond to a common I 2 C-bus address, allowing
for example, all red LEDs to be turned on or off at the same time or marquee chasing
effect, thus minimizing I 2 C-bus commands. Seven hardware address pins allow up to
126 devices on the same bus.
The Software Reset (SWRST) Call allows the master to perform a reset of the PCA9635
through the I 2 C-bus, identical to the Power-On Reset (POR) that initializes the registers to
their default state causing the outputs to be set HIGH (LED off). This allows an easy and
quick way to recon?gure all device registers to the same condition.
相关PDF资料
PCA9685PW,118 IC LED DRIVER RGBA 28-TSSOP
PCA9922PW,118 IC LED DRIVER LINEAR 16-TSSOP
PCA9955TW,118 IC LED DRVR CONST CURR
PCF85102C-2P/03,11 IC EEPROM 2KBIT 100KHZ 8DIP
PCF85103C-2T/00,11 IC EEPROM 2KBIT 100KHZ 8SOIC
PCF8570T/F5,512 IC SRAM 2KBIT 100KHZ 8SOIC
PCF8582C-2T/03,118 IC EEPROM 2KBIT 100KHZ 8SOIC
PCF8594C-2T/02,118 IC EEPROM 4KBIT 100KHZ 8SOIC
相关代理商/技术参数
PCA9635PW/S911-T 功能描述:LED照明驱动器 8-BIT I2C FM+TP LED CON RST OE RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9635PW112 制造商:NXP Semiconductors 功能描述:IC LED DRVR TSSOP
PCA9635PW-T 功能描述:LED照明驱动器 8BIT I2C FM+ TP LED CON RST OE RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
PCA9641BSHP 功能描述:Buffer, Multiplexer 2 Channel 16-HVQFN (3x3) 制造商:nxp semiconductors 系列:- 包装:剪切带(CT) 零件状态:有效 类型:缓冲器,多路复用器 应用:I2C 输入:2 线式总线 输出:2 线式总线 数据速率(最大值):- 通道数:2 延迟时间:- 信号调节:- 电容 - 输入:6pF 电压 - 电源:2.3 V ~ 3.6 V 电流 - 电源:100mA 工作温度:-40°C ~ 85°C 封装/外壳:16-VFQFN 裸露焊盘 供应商器件封装:16-HVQFN(3x3) 标准包装:1
PCA9641PWJ 功能描述:Buffer, Multiplexer 2 Channel 16-TSSOP 制造商:nxp semiconductors 系列:- 包装:剪切带(CT) 零件状态:有效 类型:缓冲器,多路复用器 应用:I2C 输入:2 线式总线 输出:2 线式总线 数据速率(最大值):- 通道数:2 延迟时间:- 信号调节:- 电容 - 输入:6pF 电压 - 电源:2.3 V ~ 3.6 V 电流 - 电源:100mA 工作温度:-40°C ~ 85°C 封装/外壳:16-TSSOP(0.173",4.40mm 宽) 供应商器件封装:16-TSSOP 标准包装:1
PCA9646D,118 功能描述:数字总线开关 IC BUFFERED 4CH 2-WIRE BUS SW RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel
PCA9646PW,118 功能描述:数字总线开关 IC Buffered 4-Channel 2-Wire Bus Switch RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel
PCA9655EDTR2G 功能描述:接口-I/O扩展器 16-BIT I/O EXPANDER RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel