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LP3943ISQ/NOPB PDF预览

LP3943ISQ/NOPB

更新时间: 2024-11-16 11:11:43
品牌 Logo 应用领域
德州仪器 - TI 驱动接口集成电路驱动器
页数 文件大小 规格书
26页 1123K
描述
通过 SMBUS/I2C 独立控制灯串的 16 通道 RGB/白色 LED 驱动器 | RTW | 24 | -40 to 85

LP3943ISQ/NOPB 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active包装说明:HVQCCN, LCC24,.16SQ,20
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:1 week
风险等级:0.58数据输入模式:SERIAL
输入特性:STANDARD接口集成电路类型:LED DISPLAY DRIVER
JESD-30 代码:S-PQCC-N24JESD-609代码:e3
长度:4 mm湿度敏感等级:1
复用显示功能:NO功能数量:1
区段数:16端子数量:24
最高工作温度:85 °C最低工作温度:-40 °C
输出特性:OPEN-DRAIN封装主体材料:PLASTIC/EPOXY
封装代码:HVQCCN封装等效代码:LCC24,.16SQ,20
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):260电源:2.5/5 V
认证状态:Not Qualified座面最大高度:0.8 mm
子类别:Display Drivers最大压摆率:0.55 mA
最大供电电压:5.5 V最小供电电压:2.3 V
标称供电电压:3 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:NO LEAD端子节距:0.5 mm
端子位置:QUAD处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:4 mm最小 fmax:0.4 MHz
Base Number Matches:1

LP3943ISQ/NOPB 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
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Software  
Technical  
Documents  
LP3943  
SNVS256D NOVMEBER 2003REVISED NOVEMBER 2016  
LP3943 16-Channel RGB, White-LED Driver With Independent SMBUS/I2C String Control  
1 Features  
3 Description  
The LP3943 is an integrated device capable of  
independently driving 16 LEDs. This device also  
contains an internal precision oscillator that provides  
all the necessary timing required for driving each  
LED. Two prescaler registers, along with two PWM  
registers, provide a versatile duty-cycle control. The  
LP3943 contains the ability to dim LEDs in  
SMBUS/I2C applications where it is required, to cut  
down on bus traffic.  
1
Internal Power-On Reset  
Active Low Reset  
Internal Precision Oscillator  
Variable Dim Rates  
(From 6.25 ms to 1.6 s; 160 Hz to 0.625 Hz)  
16 LED Drivers (Multiple Programmable States:  
ON, OFF, Input, and Dimming at a Specified  
Rate)  
Traditionally, dimming LEDs using a serial shift  
register such as 74LS594/5 requires a large amount  
of traffic on the serial bus. The LP3943 instead  
requires only the setup of the frequency and duty  
cycle for each output pin; from then on, only a single  
command from the host is required to turn each  
individual open drain output to an ON or OFF state,  
or to cycle a programmed frequency and duty cycle.  
Maximum output sink current is 25 mA per pin and  
200 mA per package. Any ports not used for  
controlling the LEDs can be used for general purpose  
input/output expansion.  
16 Open-Drain Outputs Capable of Driving up to  
25 mA per LED  
2 Applications  
Customized Flashing LED Lights for Cellular  
Phones  
Portable Applications  
Digital Cameras  
Indicator Lamps  
General Purpose I/O Expander  
Toys  
Device Information(1)  
PART NUMBER  
LP3943  
PACKAGE  
BODY SIZE (NOM)  
WQFN (24)  
4.00 mm × 4.00 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Typical Application Circuit  
+5V  
R
G
B
5V  
2
SMBUS/I C  
+5V  
Blue LEDs  
V
DD  
LED15  
LED14  
LED13  
SDA  
SCL  
SDA  
SCL  
+5V  
White LEDs  
PORTx.D  
RESET  
LED12  
LED11  
LED10  
LED9  
Cell Phone Baseband  
Controller/PController  
LED8  
LED7  
LED6  
LED5  
LED4  
LED3  
LED2  
LED1  
LED0  
A2  
A1  
A0  
GND  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 

LP3943ISQ/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP3943ISQX/NOPB TI

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