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SC627ULTRT

更新时间： 2024-09-17 03:09:47
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 363K
描述
LED Light Management Unit Charge Pump, 4 LEDs, 700mA Flash LED, Dual LDOs, and SemWireTM Interface

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中文翻译

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SC627ULTRT 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active零件包装代码：QFN
包装说明：HVQCCN, LCC20,.11SQ,16针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.71
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：5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：5.5 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
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 mmBase Number Matches：1

SC627ULTRT 数据手册

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SC627  
LED Light Management Unit  
Charge Pump, 4 LEDs, 700mA Flash LED,  
Dual LDOs, and SemWireTM Interface  
POWER MANAGEMENT  
Features  
Description  
The SC627 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.  
„
„
„
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  
„
„
Flash LED — 700mA max in flash mode, 250mA max  
continuous for spotlight  
Two user-configurable 100mA low-noise LDO  
regulators  
The charge pump provides backlight current in  
conjunction with four matched current sinks. It also can  
supply continuous or bursted current to a flash LED using  
the dedicated flash driver current sink. 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. A flash-timeout feature disables  
the flash if active for longer than 1 second. The SC627 also  
provides two low-dropout, low-noise linear regulators for  
powering a camera module or other peripheral circuits.  
„
„
„
„
„
„
„
„
„
„
„
Charge pump frequency — 250kHz  
SemWireTM single wire interface — up to 75kbit/s  
Backlight current accuracy 1.5ꢀ typical  
Backlight current matching 0.5ꢀ typical  
Programmable fade-in/fade-out for main backlight  
External flash control pin to sync with camera  
Optional 1s flash time out  
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 SC627 uses the proprietary SemWireTM single wire  
interface. The interface controls all functions of the  
device, including backlight and flash currents as well as  
two LDO voltage outputs. The single wire implementation  
minimizes microcontroller and interface pin counts. The  
flash/spotlight output is triggered via either the SemWire  
interface or a dedicated pin.  
Applications  
„
„
„
Cellular phone backlighting and flash  
PDA backlighting and flash  
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  
FLASH  
VIN  
VOUT  
VBAT  
SemWire  
Interface  
Flash  
COUT  
4.7μF  
SWIF  
FLEN  
CIN  
2.2μF  
SC627  
Control  
BL1  
BL2  
BL3  
BL4  
FL  
BYP  
CBYP  
22nF  
GREF  
AGND  
PGND  
VLDO1 = 2.5V to 3.3V  
LDO2 = 1.5V to 1.8V  
LDO1  
LDO2  
V
C1+ C1- C2+ C2-  
CLDO1  
1.0μF  
CLDO2  
1.0μF  
C1  
2.2μF  
C2  
2.2μF  
US Patents: 6,504,422; 6,794,926  
1
June 27, 2007  
© 2007 Semtech Corporation  
1234567...23

中文翻译

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