- 您现在的位置：买卖IC网 > Sheet目录311 > AS3665-ZWLT (ams)IC LED DRIVER SMARTLIGHT 25WLCSP
off . If the voltage across a enabled current source is no longer sufficient to operate the current source, the charge
AS3665
Datasheet, Confidential - D e t a i l e d D e s c r i p t i o n C h a r g e P u m p
The charge pump starts operation always in 1:1 mode and returns back to 1:1 mode if all current sources are switched
7
pump automatically select the next operating mode (which modes are allowed is controlled by cp_mode_switching .
cp_auto_on or cp_on should be set for enabling this logic). In 1:1.5 mode and if cp_mode_switching =00, the charge
pump also can automatically switch back into 1:1 mode if the voltage across all current sources is sufficiently high to
use the more efficient 1:1 mode (a fine adjustment of this hysteresis is possible with cp_down_hyst ).
Table 38. CP_Mode_Switch Register
Addr: 06h
CP_Mode_Switch Register
Bit
Bit Name
Default Access
Description
Configure if LED7 is powered by charge pump
0
LED7_on_cp
1b
R/W
0
LED7 is powered by VBAT (e.g. red LED)
1
LED7 is powered from VOUT
Configure if LED8 is powered by charge pump
1
LED8_on_cp
1b
R/W
0
LED8 is powered by VBAT (e.g. red LED)
1
LED8 is powered from VOUT
Configure if LED9 is powered by charge pump
2
LED9_on_cp
1b
R/W
0
LED9 is powered by VBAT (e.g. red LED)
1
LED9 is powered from VOUT
Adjusts the maximum output voltage of the charge pump
3
cp_max_5V4
0b
R/W
0
charge pump VOUT regulates to 4.5V
1
charge pump VOUT regulates to maximum 5.4V
Allows pulse skip mode of charge pump
4
cp_skip_on
1b
R/W
0
Pulse skip of charge pump is disabled
1
Enable pulse skip of charge pump in low load
conditions (reduce quiescent current in 1:1.5 mode)
If all current sources are off, reset the charge pump back to
1:1 mode
5
cp_auto_reset
1b
R/W
0
charge pump keeps last mode
1
Reset charge pump to 1:1 if all current sources are off
Application Hint
Its usually safe to keep the default values of the charge pump registers. Only if a red LED is used (on LED7...LED9),
reset the register bits LED7_on_cp =0, LED8_on_cp =0 and/or LED9_on_cp =0 to improve efficiency.
7. Exception: The manual mode switching mode ( cp_mode_switching =11) can override this behavior.
www.austriamicrosystems.com
Revision 1.0.2
31 - 77
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
AS3685B-T
IC DVR PHOTOFLASH 1A 10-DFN
AS3685C-T
IC DVR PHOTOFLASH 1A 10-DFN
AS3691B-ZMFT
IC LED DVR 400MA RGB/WHT 64-MLF
AS3691B-ZTSP
IC LED DVR 400MA RGB/WH 20ETSSOP
AS3693A-ZQFT
IC LED DVR 16CH W/PWM 48-QFN
AS3693B-ZTQT
IC LED CTLR 16-CH W/PWM 64-TQFP
AS3693B-ZTQW
IC LED CTLR 16-CH W/PWM 64EPTQFP
AS5040 PB
BOARD PROGRAM AS5040
相关代理商/技术参数
AS3665-ZWLT-500
功能描述:IC SMARTLIGHT DRIVER 25WLCSP 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
AS3668
制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:4 Channel Breathlight Controller
AS3668 EB
制造商:ams 功能描述:BOARD EVAL FOR AS3668
AS3668_07
制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:4 Channel Breathlight Controller
AS3668-BQFT
功能描述:IC LED DRVR BACKLIGHT 12-WLCSP 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
AS3668-BWLT
制造商:ams 功能描述:IC LED DRVR BACKLIGHT 12-WLCSP
AS3668-EB
制造商:ams 功能描述:Evaluation Board
AS366R5FLF
制造商:TT Electronics / IRC 功能描述:AS366R5FLF