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PCA9531D,112

  • 描述:种类: 线性的 输出电流 / 通道: 25毫安 最小电源电压: 5.5V 最大电源电压: 2.3伏 供应商设备包装: 16-SO 安装类别: 表面安装
  • 品牌: 恩智浦 (NXP)
  • 交期:5-7 工作日
渠道:
  • 自营
  • 得捷
  • 贸泽

起订量: 1

  • 库存: 0
  • 单价: ¥29.13094
  • 数量:
    - +
  • 总计: ¥29.13
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规格参数

  • 内部开关 Yes
  • 最小电源电压 5.5V
  • 输出电压 -
  • 工作温度 -40摄氏度~85摄氏度(TA)
  • 安装类别 表面安装
  • 部件状态 过时的
  • 最大电源电压 2.3伏
  • 频率 -
  • 应用及使用 背光
  • 种类 线性的
  • 拓扑结构 -
  • 制造厂商 恩智浦 (NXP)
  • 亮度控制 IOC
  • 输出电流 / 通道 25毫安
  • 输出数量 8
  • 包装/外壳 16-SOIC(0.154“,3.90毫米宽)
  • 供应商设备包装 16-SO

PCA9531D,112 产品详情

The PCA9531D,112 is an 8-bit I²C-bus and SMBus I/O expander optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and backlight applications.

The PCA9531D,112 contains an internal oscillator with two user programmable blink rates and duty cycles coupled to the output PWM. The LED brightness is controlled by setting the blink rate high enough (> 100 Hz) that the blinking cannot be seen and then using the duty cycle to vary the amount of time the LED is on and thus the average current through the LED.

The initial setup sequence programs the two blink rates/duty cycles for each individual PWM. From then on, only one command from the bus master is required to turn individual LEDs ON, OFF, BLINK RATE 1 or BLINK RATE 2. Based on the programmed frequency and duty cycle, BLINK RATE 1 and BLINK RATE 2 will cause the LEDs to appear at a different brightness or blink at periods up to 1.69 seconds. The open-drain outputs directly drive the LEDs with maximum output sink current of 25 mA per bit and 100 mA per package.

To blink LEDs at periods greater than 1.69 second the bus master (MCU, MPU, DSP, chipset, etc.) must send repeated commands to turn the LED on and off as is currently done when using normal I/O expanders like the NXP Semiconductors PCF8574 or PCA9554. Any bits not used for controlling the LEDs can be used for General Purpose parallel Input/Output (GPIO) expansion, which provides a simple solution when additional I/O is needed for ACPI power switches, sensors, push-buttons, alarm monitoring, fans, etc.

The active LOW hardware reset pin (RESET) and Power-On Reset (POR) initializes the registers to their default state causing the bits to be set HIGH (LED off).

Three hardware address pins on the PCA9531D,112 allow eight devices to operate on the same bus.

Feature

  • Eight LED drivers (on, off, flashing at a programmable rate)
  • Two selectable, fully programmable blink rates (frequency and duty cycle) between 0.59 Hz and 152 Hz (1.69 second and 6.58 milliseconds)
  • 256 brightness steps
  • Input/outputs not used as LED drivers can be used as regular GPIOs
  • Internal oscillator requires no external components
  • I²C-bus interface logic compatible with SMBus
  • Internal power-on reset
  • Noise filter on SCL/SDA inputs
  • Active LOW reset input
  • Eight open-drain outputs directly drive LEDs to 25 mA
  • Edge rate control on outputs
  • No glitch on power-up
  • Supports hot insertion
  • Low standby current
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • 0 Hz to 400 kHz clock frequency
  • ESD protection exceeds 2000 V HBM per JESD22-A114, 150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
  • Packages offered: SO16, TSSOP16, HVQFN16


PCA9531D,112所属分类:LED 驱动器,PCA9531D,112 由 恩智浦 (NXP) 设计生产,可通过久芯网进行购买。PCA9531D,112价格参考¥29.130944,你可以下载 PCA9531D,112中文资料、PDF数据手册、Datasheet数据手册功能说明书,可查询PCA9531D,112规格参数、现货库存、封装信息等信息!

恩智浦 (NXP)

恩智浦 (NXP)

NXP Semiconductors是一家领先的嵌入式控制器供应商,为汽车、无线连接等多个行业提供广泛的MCU产品组合,包括基于Arm的处理器和微控制器。他们继续推动创新,为工业和汽车应用提供强大的电源...

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