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LP55231SQ/NOPB

更新时间： 2024-01-27 22:12:32
品牌 Logo 应用领域
德州仪器 - TI 驱动接口集成电路
页数 文件大小 规格书
54页 781K
描述
LP55231 Programmable 9-Output LED Driver | LED Lighting 24-WQFN -40 to 85

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LP55231SQ/NOPB 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete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：5.69
数据输入模式：SERIAL接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：S-XQCC-N24长度：4 mm
复用显示功能：YES功能数量：1
区段数：9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：UNSPECIFIED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）：NOT SPECIFIED
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：INDUSTRIAL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
Base Number Matches：1

LP55231SQ/NOPB 数据手册

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LP55231  
www.ti.com  
SNOSCR5 –MARCH 2013  
LP55231 Programmable 9-Output LED Driver  
Check for Samples: LP55231  
1
FEATURES  
APPLICATIONS  
2
•
Three Independent Program Execution  
•
•
•
•
Fun Lights and Indicator Lights  
Engines, 9 Programmable Outputs With 25.5  
mA Full-scale Current, 8-bit Current Setting  
Resolution and 12-bit PWM Control Resolution  
LED Backlighting  
Haptic Feedback  
Programmable Current Source  
•
Adaptive High-efficiency 1x/1.5x Fractional  
Charge Pump - Efficiency up to 94%  
DESCRIPTION  
•
•
LED Drive Efficiency Up to 93%  
The LP55231 is a 9-channel LED driver designed to  
produce lighting effects for mobile devices. A high-  
efficiency charge pump enables LED driving over full  
Li-Ion battery voltage range. The device is equipped  
with an internal program memory, which allows  
operation without processor control.  
Charge Pump With Soft Start and Over-  
current/Short-circuit Protection  
•
•
•
Built-in LED Test  
200 nA Typical Standby Current  
Automatic Power Save Mode; IVDD = 10 µA  
(Typ.)  
Two-wire I2C-compatible Control Interface  
The LP55231 maintains excellent efficiency over a  
wide operating range by autonomously selecting the  
best charge pump gain based on LED forward  
voltage requirements. The device is able to  
automatically enter power-save mode when LED  
outputs are not active, thus lowering idle current  
consumption down to 10 µA (typ).  
•
•
•
•
•
•
Flexible Instruction Set  
Large SRAM Program Memory  
Small Application Circuit  
Source (High-side) Drivers  
Architecture Supports Color Control  
Typical Application  
C
1
C
1
C
2
C
2
0.47 mF  
0.47 mF  
0.47 mF  
0.47 mF  
C
OUT  
1 mF  
C
OUT  
1 mF  
C2+ C2-  
C1-  
C2+ C2-  
C1+  
C1+ C1-  
VDD  
VOUT  
VOUT  
V
IN  
= 2.7V TO 5.5V  
V
= 2.7V TO 5.5V  
IN  
VDD  
R
G
C
1 mF  
D1  
D2  
D3  
D4  
D5  
D6  
C
IN  
1 mF  
D7  
D1  
D2  
IN  
SCL  
SDA  
EN  
SCL  
SDA  
EN  
B
MCU  
MCU  
R
G
CLK  
CLK  
D8  
D3  
D4  
LP55231  
LP55231  
INT  
INT  
B
TRIG  
TRIG  
D7  
D8  
D9  
ASEL0  
ASEL1  
GND  
ASEL0  
ASEL1  
GND  
R
G
D9  
D5  
D6  
B
WLED APPLICATION  
NOTE: D7, D8 AND D9 POWERED  
RGB LED  
APPLICATION  
DIRECTLY FROM V  
IN  
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 © 2013, Texas Instruments Incorporated  
1234567...54

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