參數(shù)資料
型號： PCA9532D
廠商： NXP Semiconductors N.V.
元件分類： LED驅(qū)動器
英文描述： 16-bit I2C-bus LED dimmer
封裝： PCA9532BS<SOT616-1 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-1.html<1<Always Pb-free,;PCA9532D<SOT137-1 (SO24)|<<http://www.nxp.com/packages/SOT137-1.html<1<we
文件頁數(shù)： 5/29頁
文件大?。?/td> 164K
代理商： PCA9532D
PCA9532_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 17 March 2009
13 of 29
NXP Semiconductors
PCA9532
16-bit I2C-bus LED dimmer
8.
Application design-in information
8.1 Minimizing IDD when the I/Os are used to control LEDs
When the I/Os are used to control LEDs, they are normally connected to VDD through a
resistor as shown in Figure 14. Since the LED acts as a diode, when the LED is off the
I/O VI is about 1.2 V less than VDD. The supply current, IDD, increases as VI becomes
lower than VDD and is specied as IDD in Table 13 “Static characteristics”.
Designs needing to minimize current consumption, such as battery power applications,
should consider maintaining the I/O pins greater than or equal to VDD when the LED is off.
Figure 15 shows a high value resistor in parallel with the LED. Figure 16 shows VDD less
than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O VI
at or above VDD and prevents additional supply current consumption when the LED is off.
LED0 to LED12 are used as LED drivers.
LED13 to LED15 are used as regular GPIOs.
Fig 14. Typical application
PCA9532
LED0
LED1
SDA
SCL
RESET
5 V
I2C-BUS/SMBus
MASTER
002aae522
SDA
SCL
VDD
A2
A1
A0
VSS
5 V
10 k
LED2
LED3
LED4
LED5
LED14
LED15
GPIOs
10 k
10 k
LED6
LED7
LED8
LED9
LED10
LED11
LED12
LED13
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PDF描述
PCA9532PW 16-bit I2C-bus LED dimmer
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PCA9550DP 2-bit I2C-bus LED driver with programmable blink rates
相關代理商/技術參數(shù)
參數(shù)描述
PCA9532D,112 功能描述:LED照明驅(qū)動器 I2C LED DIMMER 16BIT 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N
PCA9532D,118 功能描述:LED照明驅(qū)動器 16-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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N
PCA9532D118 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:
PCA9532PW 功能描述:LED照明驅(qū)動器 I2C LED DIMMER 16BIT 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N
PCA9532PW,112 功能描述:LED照明驅(qū)動器 I2C LED DIMMER 16BIT 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: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N
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