參數(shù)資料
型號： PCA9552PW
廠商： NXP Semiconductors N.V.
元件分類： LED驅(qū)動(dòng)器
英文描述： 16-bit I2C-bus LED driver with programmable blink rates
封裝： PCA9552BS<SOT616-1 (HVQFN24)|<<http://www.nxp.com/packages/SOT616-1.html<1<Always Pb-free,;PCA9552D<SOT137-1 (SO24)|<<http://www.nxp.com/packages/SOT137-1.html<1<we
文件頁數(shù)： 5/28頁
文件大小： 159K
代理商： PCA9552PW
PCA9552_5
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 05 — 9 March 2006
13 of 28
Philips Semiconductors
PCA9552
16-bit I2C-bus LED driver with programmable blink rates
8.
Application design-in information
8.1 Minimizing IDD when the I/O is 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 15. 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 Istb 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
input/output 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
PCA9552
LED0
LED1
SDA
SCL
RESET
5 V
I2C-BUS/SMBus
MASTER
002aac188
SDA
SCL
VDD
A2
A1
A0
VSS
5 V
10 k
(3
×)
LED2
LED3
LED4
LED5
LED6
LED7
LED8
LED9
LED10
LED11
LED12
LED13
LED14
LED15
GPIOs
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9552PW,112 功能描述:LED照明驅(qū)動(dòng)器 I2C LED BLNKER 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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
PCA9552PW,118 功能描述:LED照明驅(qū)動(dòng)器 16-BIT I2C FM OD LED BLK 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
PCA9552PW118 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:
PCA9553 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates
PCA9553D 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates
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