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SC624AULTRT

更新时间： 2024-11-09 03:33:23
品牌 Logo 应用领域
商升特 - SEMTECH 显示驱动器驱动程序和接口接口集成电路泵
页数 文件大小 规格书
23页 296K
描述
LED Light Management Unit Charge Pump, 4 LEDs, Dual LDOs, and I2C Interface

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中文翻译

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SC624AULTRT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFN
包装说明：3 X 3 MM, 0.60 MM HEIGHT, HALOGEN FREE AND ROHS COMPLIANT, MLPQ-20针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.81
Is Samacsys：N数据输入模式：SERIAL
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：S-XQCC-N20
JESD-609代码：e3长度：3 mm
复用显示功能：NO功能数量：1
区段数：4端子数量：20
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：LCC20,.11SQ,16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：3.3/5 V认证状态：Not Qualified
座面最大高度：0.6 mm子类别：Display Drivers
最大供电电压：4.2 V最小供电电压：3 V
标称供电电压：3.2 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：0.4 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
宽度：3 mm最小 fmax：0.44 MHz
Base Number Matches：1

SC624AULTRT 数据手册

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SC624A  
LED Light Management Unit  
Charge Pump, 4 LEDs, Dual LDOs,  
and I2C Interface  
POWER MANAGEMENT  
Features  
Description  
„
„
„
Input supply voltage range — 3.0V to 5.5V  
Charge pump modes — 1x, 1.5x and 2x  
Four programmable current sinks with 32 steps from  
0.5mA to 25mA  
The SC624A is a high efficiency charge pump LED driver  
using Semtech’s proprietary mAhXLifeTM technology.  
Performance is optimized for use in single-cell Li-ion  
battery applications.  
„
Two user-configurable 100mA low-noise LDO  
regulators  
The charge pump provides backlight current in  
conjunction with four matched current sinks. The load  
and supply conditions determine whether the charge  
pump operates in 1x, 1.5x, or 2x mode. An optional fading  
feature that gradually adjusts the backlight current is  
provided to simplify control software. The SC624A also  
provides two low-dropout, low-noise linear regulators for  
powering a camera module or other peripheral circuits.  
„
„
„
„
„
„
„
„
„
Charge pump frequency — 250kHz  
I2C compatible interface — up to 400kHz  
Backlight current accuracy 1.5ꢀ typical  
Backlight current matching 0.5ꢀ typical  
Programmable fade-in/fade-out for main backlight  
Automatic sleep mode (LEDs off) — IQ = 100μA  
Low shutdown current — 0.1μA (typical)  
Ultra-thin package — 3mm x 3mm x 0.6mm  
Fully WEEE and RoHS compliant  
The SC624A uses an I2C compatible serial interface. The  
interface controls all functions of the device, including  
backlight current and two LDO voltage outputs.  
Applications  
„
„
„
Cellular phone backlighting  
PDA backlighting  
Camera I/O and core power  
In sleep mode, the device reduces quiescent current to  
100μA while continuing to monitor the serial interface.  
The two LDOs can be enabled when the device is in sleep  
mode. Total current reduces to 0.1μA in shutdown.  
Typical Application Circuit  
MAIN BACKLIGHT  
VIN  
VOUT  
VBAT  
COUT  
2.2μF  
I2C Data  
I2C Clock  
SC624A  
SDA  
SCL  
CIN  
1μF  
BL  
BL  
BL  
BL  
1
2
3
4
Enable Control  
EN  
BYP  
CBYP  
22nF  
VLDO1 = 2.5V to 3.3V  
LDO2 = 1.5V to 1.8V  
LDO  
LDO  
1
2
AGND  
PGND  
V
C1+ C1- C2+ C2-  
CLDO1  
CLDO2  
1μF  
1μF  
C2  
1μF  
C1  
1μF  
US Patents: 6,504,422; 6,794,926  
1
June 27, 2007  
© 2007 Semtech Corporation  
1234567...23

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