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PCA9922N

更新时间： 2024-11-15 11:46:51
品牌 Logo 应用领域
恩智浦 - NXP 显示驱动器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
26页 136K
描述
8-channel constant current LED driver with output error detection

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PCA9922N 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：DIP包装说明：0.300 INCH, PLASTIC, SOT38-4, DIP-16
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.8Is Samacsys：N
数据输入模式：SERIAL显示模式：SEGMENT
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDIP-T16
长度：19.025 mm复用显示功能：NO
功能数量：1区段数：8
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP16,.3
封装形状：RECTANGULAR封装形式：IN-LINE
电源：5 V认证状态：Not Qualified
座面最大高度：4.2 mm子类别：Display Drivers
最大供电电压：5.5 V最小供电电压：3.3 V
标称供电电压：5 V表面贴装：NO
温度等级：INDUSTRIAL端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
宽度：7.62 mm最小 fmax：25 MHz
Base Number Matches：1

PCA9922N 数据手册

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PCA9922  
8-channel constant current LED driver with output error  
detection  
Rev. 01 — 15 January 2009  
Product data sheet  
1. General description  
The PCA9922 is an 8-channel constant current LED driver designed for LED signage and  
display applications. The output current is adjustable from 15 mA to 60 mA controlled by  
an external series resistor. The outputs are controlled via a serial interface with a  
maximum clock frequency of 25 MHz to allow for the system requirement of high volume  
data transmission. Each of the 8 channel outputs has edge rate control to limit the change  
in current when the outputs are enabled or disabled.  
The device has built-in circuitry for detecting LED open-circuit and output short to ground.  
After signaling the specified error detect sequence on the input control lines, error status  
can be read out of the device via the serial data out.  
The device is designed such that it may be cascaded with other similar devices. The SDO  
pin contains the output of the shift register which may be used for cascading to the SDI pin  
of the next device in the series. SDO changes state on the falling edge of CLK. SDI  
captures data on the rising edge of CLK.  
The PCA9922 is a pin-to-pin functionally equivalent 5 V alternative (exception: error data  
is inverted; see Section 7.2.1, Section 7.2.2 and Section 7.2.7) for the ST2221A and  
STP08CDC596.  
The PCA9922 is available in DIP16, TSSOP16 and HVQFN20 packages and is specified  
over the −40 °C to +85 °C industrial temperature range.  
2. Features  
I 25 MHz serial interface  
I 3.3 V to 5.5 V operation  
I 8 LED low side constant current outputs  
I Global control for the 8 LED outputs variable between 15 mA to 60 mA  
I 15 mA to 60 mA maximum current for all 8 output channels set by an external resistor  
I Constant current matching at 25 °C, VDD = 5.0 V  
I Bit-to-bit: ±6 %  
I Chip-to-chip: ±10 %  
I Gradual turn-on/turn-off output to limit EMI  
I Error detection mode for line open, output short to ground, LED open and LED short  
I −40 °C to +85 °C operation  
I ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per  
JESD22-A115, and 1000 V CDM per JESD22-C101  
I Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA  
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