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參數(shù)資料
| 型號： | PCA9530 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 2-bit I2C LED dimmer |
| 中文描述： | 2位I2C LED調(diào)光 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 123K |
| 代理商： | PCA9530 |
Philips Semiconductors
Preliminary data
PCA9530
2-bit I
2
C LED dimmer
2
2002 Dec 12
FEATURES
2 LED drivers (on, off, flashing at a programmable rate)
2 selectable, fully programmable blink rates (frequency and duty
cycle) between 0.625 and 160 Hz (1.6 seconds and
6.25 milliseconds)
256 brightness steps
Input/output not used as LED drivers can be used as regular
GPIOs
Internal oscillator requires no external components
I
2
C interface logic compatible with SMBus
Internal power-on reset
Noise filter on SCL/SDA inputs
Active low reset input
2 open drain outputs directly drive LEDs to 25 mA
Edge rate control on outputs
No glitch on power-up
Supports hot insertion
Low stand-by current
Operating power supply voltage range of 2.3 V to 5.5 V
0 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 JESDEC Standard JESD78 which
exceeds 100 mA
Package offer: SO8, TSSOP8, VSSOP8
DESCRIPTION
The PCA9530 is a 2-bit I C and SMBus I/O expander optimized for
dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB)
color mixing and back light applications.
The PCA9530 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 can not 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 1.6
second. The open drain outputs directly drive the LEDs with
maximum output sink current of 25 mA per bit and 50 mA per
package.
To blink LEDs at periods greater than 1.6 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 Philips 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,
pushbuttons, alarm monitoring, fans, etc.
The active low hardware reset pin (RESET) and Power On Reset
(POR) initialize the registers to their default state causing the bits to
be set high (LED off).
One hardware address pin on the PCA9530 allows two devices to
operate on the same bus.
1
2
3
4
5
6
7
8
A0
LED0
LED1
V
SS
V
DD
SDA
SCL
RESET
SW00926
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
NUMBER
1
SYMBOL
FUNCTION
A0
Address input 0
2
LED0
LED driver 0
3
LED1
LED driver 1
4
V
SS
RESET
Supply ground
5
Active low reset input
6
SCL
Serial clock line
7
SDA
Serial data line
8
V
DD
Supply voltage
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
ORDER CODE
TOPSIDE MARK
DRAWING NUMBER
8-Pin Plastic SO
-40 to +85
°
C
-40 to +85
°
C
PCA9530D
PCA9530
SOT96-1
8-Pin Plastic TSSOP
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
I
2
C is a trademark of Philips Semiconductors Corporation.
PCA9530DP
9530
SOT505-1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9530D | 功能描述:LED照明驅(qū)動器 2-BIT I2C FM OD LED DIM RST RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9530D,112 | 功能描述:LED照明驅(qū)動器 2-BIT I2C FM OD LED RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9530D,118 | 功能描述:LED照明驅(qū)動器 2-BIT I2C FM OD LED RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| PCA9530D,118-CUT TAPE | 制造商:NXP 功能描述:PCA9530 Series 2-Bit I2C-Bus and SMBus I/O Expander LED Dimmer - SOIC - 8 |
| PCA9530DP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-bit I2C LED dimmer |
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