参数资料
型号: PCA9530D,118
厂商: NXP Semiconductors
文件页数: 11/24页
文件大小: 0K
描述: IC LED DRIVER RGB 8-SOIC
产品培训模块: LED Controllers
I²C Bus Fundamentals
标准包装: 1
拓扑: 开路漏极,PWM
输出数: 2
内部驱动器:
类型 - 主要: 背光,LED 闪烁器
类型 - 次要: RGB
频率: 400kHz
电源电压: 2.3 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SO
包装: 标准包装
工作温度: -40°C ~ 85°C
产品目录页面: 825 (CN2011-ZH PDF)
其它名称: 568-1830-6
NXP Semiconductors
PCA9530
2-bit I 2 C-bus LED dimmer
8.2 Programming example
The following example will show how to set LED0 to blink at 1 Hz at a 50 % duty cycle.
LED1 will be set to be dimmed at 25 % of their maximum brightness (duty cycle = 25 %).
Table 10.
Programming PCA9530
Program sequence
START
PCA9530 address with A0 = LOW
PSC0 subaddress + Auto-Increment
Set prescaler PSC0 to achieve a period of 1 second:
PSC0 + 1
Blink period = 1 = ------------------------
152
PSC0 = 151
Set PWM0 duty cycle to 50 %:
PWM0
----------------- = 0.5
256
PWM0 = 128
Set prescaler PCS1 to dim at maximum frequency:
Blink period = max
PSC1 = 0
Set PWM1 output duty cycle to 25 %:
PWM1
----------------- = 0.25
256
PWM1 = 64
Set LED0 to PWM0, and set LED1 to blink at PWM1
STOP
9. Limiting values
Table 11. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
I 2 C-bus
S
C0h
11h
97h
80h
00h
40h
0Eh
P
Symbol
V DD
V I/O
I O(LEDn)
I SS
P tot
T stg
T amb
Parameter
supply voltage
voltage on an input/output pin
output current on pin LEDn
ground supply current
total power dissipation
storage temperature
ambient temperature
Conditions
operating
Min
? 0.5
V SS ? 0.5
-
-
-
? 65
? 40
Max
+6.0
5.5
+25
50
400
+150
+85
Unit
V
V
mA
mA
mW
° C
° C
PCA9530_3
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 26 February 2009
11 of 24
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