參數(shù)資料
型號： PCA9531D
廠商： NXP Semiconductors N.V.
元件分類： LED驅(qū)動器
英文描述： 8-bit I2C-bus LED dimmer
封裝： PCA9531BS<SOT629-1 (HVQFN16)|<<http://www.nxp.com/packages/SOT629-1.html<1<Always Pb-free,;PCA9531D<SOT109-1 (SO16)|<<http://www.nxp.com/packages/SOT109-1.html<1<we
文件頁數(shù)： 5/27頁
文件大?。?/td> 156K
代理商： PCA9531D
PCA9531_6
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 06 — 19 February 2009
13 of 27
NXP Semiconductors
PCA9531
8-bit I2C-bus LED dimmer
8.2 Programming example
The following example will show how to set LED0 to LED3 on. It will then set LED4 and
LED5 to blink at 1 Hz at a 50 % duty cycle. LED6 and LED7 will be set to be dimmed at
25 % of their maximum brightness (duty cycle = 25 %).
9.
Limiting values
Table 10.
Programming PCA9531
Program sequence
I2C-bus
START
S
PCA9531 address with A0 to A2 = LOW
C0h
PSC0 subaddress + Auto-Increment
11h
Set prescaler PSC0 to achieve a period of 1 second:
PSC0 = 151
97h
Set PWM0 duty cycle to 50 %:
PWM0 = 128
80h
Set prescaler PCS1 to dim at maximum frequency:
PSC1 = 0
00h
Set PWM1 output duty cycle to 25 %:
PWM1 = 64
40h
Set LED0 to LED3 on
55h
Set LED4 and LED5 to PWM0, and LED6 or LED7 to PWM1
FAh
STOP
P
Blink period
1
PSC0
1
+
152
------------------------
==
PWM 0
256
-----------------
0.5
=
Blink period
max
=
PWM 1
256
-----------------
0.25
=
Table 11.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
VDD
supply voltage
0.5
+6.0
V
VI/O
voltage on an input/output pin
VSS 0.5
5.5
V
IO(LEDn)
output current on pin LEDn
-
±25
mA
ISS
ground supply current
-
200
mA
Ptot
total power dissipation
-
400
mW
Tstg
storage temperature
65
+150
°C
Tamb
ambient temperature
operating
40
+85
°C
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9531D,112 功能描述:LED照明驅(qū)動器 8-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
PCA9531D,118 功能描述:LED照明驅(qū)動器 8-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
PCA9531D112 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:
PCA9531PW 功能描述:LED照明驅(qū)動器 8-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
PCA9531PW,112 功能描述:LED照明驅(qū)動器 8-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
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