PCA9532BS数据手册恩XP中文资料规格书
PCA9532BS规格书详情
描述 Description
The PCA9532 is a 16-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 PCA9532 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 200 mA per package (100 mA per octal).
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 PCF8575 or PCA9555. 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, all zeroes, causing the bits to be set HIGH (LED off).
Three hardware address pins on the PCA9532 allow eight devices to operate on the same bus.
特性 Features
• 16 LED drivers (on, off, flashing at a programmable rate)
• Two selectable, fully programmable blink rates (frequency and duty cycle) between 0.591 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
• 16 open-drain outputs directly drive LEDs to 25 mA
• Controlled edge rates to minimize ground bounce
• 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: SO24, TSSOP24, HVQFN24
技术参数
- 型号:
PCA9532BS
- 功能描述:
LED照明驱动器 I2C LED DIMMER 16BIT
- RoHS:
否
- 制造商:
STMicroelectronics
- 输入电压:
11.5 V to 23 V
- 最大电源电流:
1.7 mA
- 安装风格:
SMD/SMT
- 封装/箱体:
SO-16N
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
恩XP |
23+ |
原厂封装 |
90000 |
一定原装深圳现货 |
询价 | ||
PHI |
24+ |
QFN |
40 |
询价 | |||
恩XP |
22+ |
24HVQFN |
9000 |
原厂渠道,现货配单 |
询价 | ||
恩XP |
24+ |
QFN |
80000 |
只做自己库存 全新原装进口正品假一赔百 可开13%增 |
询价 | ||
NA |
23+ |
NA |
26094 |
10年以上分销经验原装进口正品,做服务型企业 |
询价 | ||
恩XP |
22+ |
QFN |
10730 |
原装正品 |
询价 | ||
恩XP |
25+ |
原厂封装 |
10280 |
原厂授权一级代理,专注军工、汽车、医疗、工业、新能源、电力! |
询价 | ||
恩XP |
24+ |
HVQFN24 |
6000 |
只做全新原装正品,假一赔十 |
询价 | ||
恩XP |
24+ |
QFN-24 |
5000 |
十年沉淀唯有原装 |
询价 | ||
PHI |
22+ |
QFN |
3000 |
原装正品,支持实单 |
询价 |