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LP5521YQX/NOPB PDF预览

LP5521YQX/NOPB

更新时间： 2024-01-17 17:48:10
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器
页数 文件大小 规格书
14页 323K
描述
IC LED DISPLAY DRIVER, QCC24, 5 X 4 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, LLP-24, Display Driver

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LP5521YQX/NOPB 技术参数

是否Rohs认证：符合生命周期：Transferred
包装说明：HVQCCN, LCC24,.16X.2,20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.07Is Samacsys：N
数据输入模式：SERIAL接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：R-XQCC-N24JESD-609代码：e1
长度：5 mm湿度敏感等级：1
复用显示功能：YES功能数量：1
区段数：3端子数量：24
最高工作温度：85 °C最低工作温度：-30 °C
封装主体材料：UNSPECIFIED封装代码：HVQCCN
封装等效代码：LCC24,.16X.2,20封装形状：RECTANGULAR
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
电源：3/5 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Display Drivers
最大供电电压：5.5 V最小供电电压：2.7 V
标称供电电压：3.6 V表面贴装：YES
温度等级：COMMERCIAL EXTENDED端子面层：Tin/Silver/Copper (Sn/Ag/Cu)
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：40
宽度：4 mm最小 fmax：0.4 MHz
Base Number Matches：1

LP5521YQX/NOPB 数据手册

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June 2007  
LP5521  
Programmable Three Channel LED Driver  
General Description  
Features  
■
The LP5521 is a three channel LED driver designed to pro-  
duce variety of lighting effects for mobile devices. High effi-  
ciency charge pump enables LED driving over full Li-Ion  
battery voltage range. The device has a program memory for  
creating variety of lighting sequences. When program mem-  
ory has been loaded, LP5521 can operate independently  
without processor control.  
Adaptive charge pump with 1x and 1.5x gain provides up  
to 95% LED drive efficiency  
Charge pump with soft start and overcurrent/short circuit  
protection  
■
Low input ripple and EMI  
■
■
■
■
■
■
Very small solution size, no inductor or resistors required  
200 nA typical shutdown current  
Automatic power save mode  
LP5521 maintains excellent efficiency over a wide operating  
range by automatically selecting proper charge pump gain  
based on LED forward voltage requirements. LP5521 is able  
to automatically enter power-save mode, when LED outputs  
are not active and thus lowering current consumption.  
I2C compatible interface  
Independently programmable constant current outputs  
with 8-bit current setting and 8-bit PWM control  
Three independent LED channels have accurate pro-  
grammable current sources and PWM control. Each channel  
has program memory for creating desired lighting sequences  
with PWM control.  
Typical LED output saturation voltage 50 mV and current  
matching 1%  
Three program execution engines with flexible instruction  
set  
■
■
LP5521 has a flexible digital interface. Trigger I/O and 32 kHz  
clock input allow synchronization between multiple devices.  
Interrupt output can be used to notify processor, when LED  
sequence has ended. LP5521 has four pin selectable I2C ad-  
dresses. This allows connecting up to four parallel devices in  
one I2C bus. GPO and INT pins can be used as a digital con-  
trol pin for other devices.  
Autonomous operation without external control  
Large SRAM program memory  
■
■
■
■
■
Two general purpose digital outputs  
microSMD-20 package, 0.4 mm pitch  
Bumped LLP-24 package, 0.5 mm pitch  
LP5521 requires only four small and low cost ceramic capac-  
itors.  
Applications  
Fun / indicator lights  
■
■
■
LP5521 is available in tiny 2.1x1.7x0.6 mm microSMD-20  
package and in 4.0x5.0x0.8 mm bumped LLP-24 package.  
LCD sub-display backlighting  
Keypad RGB backlighting and phone cosmetics  
Comprehensive application tools are available, including  
command compiler for easy LED sequence programming.  
Vibra, speakers, waveform generator  
■
Typical Application  
20186270  
© 2007 National Semiconductor Corporation  
201862  
www.national.com  
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LP5521YQX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP5521YQX NSC

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