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| 型号： | PCA9685PW/Q900,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 28/51页 |
| 文件大小： | 0K |
| 描述： | IC PWM CTLR LED DVR 28TSSOP |
| 产品培训模块： | I²C Bus Fundamentals |
| 标准包装： | 1 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 16 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，LED 闪烁器 |
| 类型 - 次要： | RGBA |
| 频率： | 25MHz，50MHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 输出电压： | 5.5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | 568-5931-6 |
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NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I 2 C-bus LED controller
7.7 Using the PCA9685 with and without external drivers
The PCA9685 LED output drivers are 5.5 V only tolerant and can sink up to 25 mA at 5 V.
If the device needs to drive LEDs to a higher voltage and/or higher current, use of an
external driver is required.
? INVRT bit (MODE2 register) can be used to keep the LED PWM control firmware the
same independently of the type of external driver. This bit allows LED output polarity
inversion/non-inversion only when OE = 0.
? OUTDRV bit (MODE2 register) allows minimizing the amount of external components
required to control the external driver (N-type or P-type device).
Table 11.
Use of INVRT and OUTDRV based on connection to the LEDn outputs when OE = 0 [1]
INVRT OUTDRV Direct connection to LEDn
External N-type driver
External P-type driver
Firmware
External
Firmware
External
Firmware
External
pull-up
resistor
pull-up
resistor
pull-up
resistor
0
0
formulas and LED
output state values
LED current formulas and LED required
limiting R [2]
output state
formulas and LED
output state values
required
inverted
values inverted
apply
0
1
formulas and LED
output state values
LED current formulas and LED not
limiting R [2]
required [3]
output state
formulas and LED
output state values
not required
values apply
inverted
[3]
inverted
1
0
formulas and LED
output state values
LED current formulas and LED required
limiting R
output state
formulas and LED
output state values
required
apply [2]
values apply
inverted
1
1
formulas and LED
LED current formulas and LED not required formulas and LED
not
output state values
apply [2]
limiting R
output state
values inverted
output state values required [4]
apply [4]
[1]
[2]
[3]
[4]
When OE = 1, LED output state is controlled only by OUTNE[1:0] bits (MODE2 register).
Correct configuration when LEDs directly connected to the LEDn outputs (connection to V DD through current limiting resistor).
Optimum configuration when external N-type (NPN, NMOS) driver used.
Optimum configuration when external P-type (PNP, PMOS) driver used.
LED0
+5 V
LED0
+5 V
LED0
+V DD
002aad169
INVRT = 0
OUTDRV = 1
Fig 13. External N-type driver
PCA9685
Product data sheet
002aad170
INVRT = 1
OUTDRV = 1
Fig 14. External P-type driver
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 2 September 2010
002aad171
INVRT = 1
OUTDRV = 0
Fig 15. Direct LED connection
? NXP B.V. 2010. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9691BS/1 | 制造商:NXP Semiconductors 功能描述:IC ADC/DAC 8-BIT I2C 16-HVQFN 制造商:NXP Semiconductors 功能描述:IC, ADC/DAC, 8-BIT, I2C, 16-HVQFN |
| PCA9691BS/1,118 | 功能描述:I2C 接口集成电路 ADC/DAC 16-Pin HVQFN EP RoHS:否 制造商:NXP Semiconductors 电源电压-最大:5.5 V 电源电压-最小:2.3 V 最大工作频率:400 KHz 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-16 |
| PCA9691BS/1118 | 制造商:NXP Semiconductors 功能描述:PCA9691BS/HVQFN16/REEL13//1 |
| PCA9691T/1，112 | 制造商:NXP Semiconductors 功能描述: |
| PCA9691T/1，118 | 制造商:NXP Semiconductors 功能描述: |
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