- 您现在的位置：买卖IC网 > Datasheet目录356 > SC667ULTRT (Semtech)IC LED DRVR LMU 7CH MLPQUT20 Datasheet资料下载
参数资料
| 型号： | SC667ULTRT |
| 厂商： | Semtech |
| 文件页数： | 1/47页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR LMU 7CH MLPQUT20 |
| 特色产品： | Semtech sc667 and sc668 |
| 标准包装： | 1 |
| 拓扑： | 线性（LDO），PWM |
| 输出数： | 11 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，LED 闪烁器，照明管理装置（LMU） |
| 频率： | 400kHz |
| 电源电压： | 2.9 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-UFQFN 裸露焊盘 |
| 供应商设备封装： | 20-MLPQ（3x3） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | SC667ULDKR |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页
SC667
7 LED Light Management Unit
Automatic Dropout Prevention, Ambient Light
POWER MANAGEMENT
Features
Sense Input, PWM Dimming, and 4 LDOs
Description
?
?
?
?
?
?
?
?
Seven LED backlight sinks with 32 current settings
from 0mA to 25mA
Up to four LED backlight banks
Lighting effects — fade-in/fade-out, breathe, blink,
auto-dim full, and auto-dim partial functions
ADP (Automatic Dropout Prevention) for backlights
ALS (Ambient Light Sense) option sets the backlight
brightness according to ambient lighting conditions
I 2 C Bus fast mode and standard mode
IRQ (Interrupt request) — open-drain output indi-
cates a change of state for the ALS
Backlight current accuracy — ±1.5% typical
The SC667 is a highly integrated light management unit
that provides programmable current for up to seven LED
current sinks. Four LED banks are provided to allow set-
tings for various LED zones or indicators. Four low-noise
LDOs with programmable outputs ranging from 1.2V to 3.3V
and 200mA maximum output current are also included.
ADP limits the maximum LED current to a level that ensures
the LEDs maintain matched currents when the supply
voltage approaches dropout. This feature produces accept-
able light output at low supply voltage levels without
requiring a boost converter or charge pump.
? Backlight current matching — ±0.5% typical
? Four programmable 200mA low-noise LDO regulators
? PWM interface (200Hz to 50kHz) with internal digital
low-pass filter
? Automatic sleep mode with all LEDs off
? Shutdown current — 0.1μA typical
? Ultra-thin package — 3 x 3 x 0.6 (mm)
? Lead-free and halogen-free
? WEEE and RoHS compliant
Applications
? Cellular phones, smart phones, and PDAs
? LCD modules
? Portable media players and digital cameras
? Personal navigation devices
? Display/keypad backlighting and LED indicators
Typical Application Circuit
Two interfaces are provided for design flexibility. The I 2 C
interface controls the LED on/off functions, assigns the
LEDs to backlight banks, programs the LED currents, pro-
grams the lighting effects, enables the LDOs, and sets the
LDO output voltages. The PWM interface reduces the
current setting for LED bank #1 by a factor equal to the duty
cycle of the applied PWM signal. A filter at the PWM input
converts the pulsed signal to a DC current level, resulting in
less switching noise compared to pulsed current methods.
The ADI input translates the voltage from an external ALS
(Ambient Light Sensor) into a digitized code using a sigma-
delta ADC. This block includes level detection to adjust the
current setting of bank #1 with two different programmable
levels based on the ambient light level. An interrupt output
transitions low to notify the host processor that a level
adjustment has been made.
2.9 to 5.5V
V IN
IN
SC667
BL1
V IN
C IN
GND
BL2
BL3
I 2 C Data
SDA
BL4
BL5
V DD
I 2 C Clock
Backlight PWM
Device Enable
V LDO4
SCL
PWM
EN
ADI
BYP
BL6
BL7
IRQ
LDO1
LDO2
LDO3
LDO4
R 1
Flag for ALS
LDO1
LDO2
LDO3
LDO4
C BYP
C 1
C 2
C 3
C 4
Ambient Light Sensor
December 9, 2010
? 2010 Semtech Corporation
1
相关PDF资料 |
PDF描述 |
|---|---|
| SC668ULTRT | IC LED DRVR LMU 8CH MLPQUT20 |
| SDIN2B2-8G | IC INAND FLASH 8GB 169FBGA |
| SDK-DM3730-10-256512R | KIT DEV ZOOM FOR AM/DM37X |
| SDK-DM3730-20-256512R | KIT DEV ZOOM FOR AM/DM37X |
| SE162216 | ENCLOSURE ASSY 6U X 19" X 16" |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SC668 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:8 LED Light Management Unit Automatic Dropout Prevention , Ambient Light Sense Input, PWM Dimming, and 4 LDOs |
| SC668EVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:8 LED Light Management Unit Automatic Dropout Prevention , Ambient Light Sense Input, PWM Dimming, and 4 LDOs |
| SC668ULTRT | 功能描述:IC LED DRVR LMU 8CH MLPQUT20 RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 特色产品:LM3445 TRIAC Dimmable LED Driver 标准包装:55 系列:PowerWise® 恒定电流:是 恒定电压:- 拓扑:PWM，降压（降压） 输出数:1 内部驱动器:无 类型 - 主要:- 类型 - 次要:高亮度 LED（HBLED） 频率:30kHz ~ 1MHz 电源电压:8 V ~ 12 V 输出电压:- 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOICN 包装:管件 工作温度:-40°C ~ 125°C 产品目录页面:1285 (CN2011-ZH PDF) 其它名称:LM3445M |
| SC-67 | 制造商:JIFFY 功能描述:CORRUGATED BOX DW 24X18X18 PK15 制造商:JIFFY 功能描述:CORRUGATED BOX, DW, 24X18X18, PK15 |
| SC6750 | 制造商:Alltrade Tools LLC 功能描述:COMB. SET |
发布紧急采购，3分钟左右您将得到回复。