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| 型号： | PCA9553D/01,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 8-SOIC |
| 标准包装： | 2,500 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | LED 闪烁器 |
| 频率： | 400kHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | 935272825118 PCA9553D/01-T PCA9553D/01-T-ND |
PCA9553
4-bit I 2 C-bus LED driver with programmable blink rates
Rev. 06 — 29 December 2008
Product data sheet
1. General description
The PCA9553 LED blinker blinks LEDs in I 2 C-bus and SMBus applications where it is
necessary to limit bus traf?c or free up the I 2 C-bus master's (MCU, MPU, DSP, chip set,
etc.) timer. The uniqueness of this device is the internal oscillator with two programmable
blink rates. To blink LEDs using normal I/O expanders like the PCF8574 or PCA9554, the
bus master must send repeated commands to turn the LED on and off. This greatly
increases the amount of traf?c on the I 2 C-bus and uses up one of the master's timers. The
PCA9553 LED blinker instead requires only the initial set-up command to program
BLINK RATE 1 and BLINK RATE 2 (i.e., the frequency and duty cycle). From then on, only
one command from the bus master is required to turn each individual open-drain output
ON, OFF, or to cycle at BLINK RATE 1 or BLINK RATE 2. Maximum output sink current is
25 mA per bit and 100 mA per package.
Any bits not used for controlling the LEDs can be used for General Purpose Parallel
Input/Output (GPIO) expansion.
Power-On Reset (POR) initializes the registers to their default state, all zeroes, causing
the bits to be set HIGH (LED off).
Due to pin limitations, the PCA9553 is not featured with hardware address pins. The
PCA9553/01 and the PCA9553/02 have different ?xed I 2 C-bus addresses allowing
operation of both on the same bus.
2. Features
I 4 LED drivers (on, off, ?ashing at a programmable rate)
I 2 selectable, fully programmable blink rates (frequency and duty cycle) between
0.172 Hz and 44 Hz (5.82 seconds and 0.023 seconds)
I Input/outputs not used as LED drivers can be used as regular GPIOs
I Internal oscillator requires no external components
I I 2 C-bus interface logic compatible with SMBus
I Internal power-on reset
I Noise ?lter on SCL/SDA inputs
I 4 open-drain outputs directly drive LEDs to 25 mA
I Controlled edge rates to minimize ground bounce
I No glitch on power-up
I Supports hot insertion
I Low standby current
I Operating power supply voltage range of 2.3 V to 5.5 V
I 0 Hz to 400 kHz clock frequency
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9553D02 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates |
| PCA9553DP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates |
| PCA9553DP/01 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C-bus LED driver with programmable blink rates |
| PCA9553DP/01,118 | 功能描述:LED照明驱动器 4BIT I2C FM OD LED BLK 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 |
| PCA9553DP/01118 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
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