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LP3944ISQ/NOPB PDF预览

LP3944ISQ/NOPB

更新时间： 2024-11-16 11:10:47
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
21页 762K
描述
RGB/白光/蓝光 8 LED 闪烁光驱动器 | RTW | 24 | -40 to 85

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中文翻译

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LP3944ISQ/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：8542.39.00.01风险等级：0.61
数据输入模式：SERIAL输入特性：STANDARD
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-PQCC-N24
JESD-609代码：e3长度：4 mm
湿度敏感等级：3复用显示功能：NO
功能数量：1区段数：8
端子数量：24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：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：5 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

LP3944ISQ/NOPB 数据手册

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LP3944  
www.ti.com  
SNVS264A –MAY 2004–REVISED APRIL 2013  
LP3944 RGB/White/Blue 8-LED Fun Light Driver  
Check for Samples: LP3944  
1
FEATURES  
DESCRIPTION  
LP3944 is an integrated device capable of  
independently driving 8 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  
LP3944 contains the ability to dim LEDs in  
SMBUS/I2C applications where it is required to cut  
down on bus traffic.  
2
•
•
•
•
Internal Power-on Reset  
Active Low Reset  
Internal Precision Oscillator  
Variable Dim Rates (from 6.25 ms to 1.6s; 160  
Hz–0.625 Hz)  
APPLICATIONS  
•
Customized Flashing LED Lights for Cellular  
Phones  
Traditionally, to dim LEDs using a serial shift register  
such as 74LS594/5 would require a large amount of  
traffic to be on the serial bus. LP3944 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 ON, OFF, 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.  
•
•
•
•
•
Portable Applications  
Digital Cameras  
Indicator Lamps  
General Purpose I/O Expander  
Toys  
KEY SPECIFICATIONS  
•
8 LED Driver (Multiple Programmable  
States—On, Off, Input, and Dimming at a  
Specified Rate)  
•
8 Open Drain Outputs Capable of Driving up to  
25 mA per LED  
Typical Application Circuit  
+5V  
R
G
B
5V  
SMBUS  
2
+5V  
/I C  
Blue LEDs  
V
DD  
LED7  
LED6  
LED5  
SDA  
SCL  
SDA  
SCL  
PORTx.D  
RESET  
A2  
LED4  
LED3  
LED2  
LED1  
LED0  
A1  
Cell Phone Baseband  
Controller/mController  
A0  
GND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2004–2013, Texas Instruments Incorporated  
 
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与LP3944ISQ/NOPB相关器件

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LP3944ISQX NSC

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 		RGB/White/Blue 8-LED Fun Light Driver
LP3944ISQX/NOPB TI

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 		RGB/白光/蓝光 8 LED 闪烁光驱动器 | RTW | 24 | -40 to 85
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 		Battery Charge Management System
LP3945LD TI

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 		IC,BATTERY MANAGEMENT,LLCC,14PIN,PLASTIC
LP3945LDX TI

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 		IC,BATTERY MANAGEMENT,LLCC,14PIN,PLASTIC
LP3945LDX NSC

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 		IC,BATTERY MANAGEMENT,LLCC,14PIN,PLASTIC
LP3946 NSC

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 		Battery Charge Management System
LP3946ILDX NSC

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 		Battery Charge Management System

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