LDS8621
200 mA, Dual Output LED Flash/Lamp Driver
FEATURES
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Multi-mode charge pump: 1x, 1.33x, 1.5x, 2x
Ultra low dropout PowerLite ? Current
Regulator*
Drives two high-current LEDs up to 96 mA
each
PWM brightness control
Power efficiency up to 95%
Low noise input ripple in all modes
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Low current shutdown mode
Soft start and current limiting
Short circuit protection
Thermal shutdown protection
Tiny 3 x 3 x 0.8 mm 16-pin TQFN package
mode and ultra low dropout PowerLite ? Current
Regulator increases device’s efficiency up to 95%.
New mode requires no additional external capacitors.
The PWM1/PWM2 logic inputs function as a chip
enable and a PWM mode LED brightness control.
PWM1 pin controls LED A, while PWM2 controls
APPLICATION
bank LED B.
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LED Light Supply for Smart Phones, PDAs,
and Cell Phones
LED Flashlights
LED Flash/Strobe Applications
The maximum LEDs current value is factory preset to
96 mA. Other current values are available upon
request. Each LED may be programmed separately.
Low noise input ripple is achieved by operating at a
constant switching frequency which allows the use of
DESCRIPTION
The LDS8621 is a high efficiency multi-mode
fractional charge pump with ultra low feedback
voltage that can drive up to two high-current LEDs.
The inclusion of a 1.33x fractional charge pump
TYPICAL APPLICATION CIRCUIT
small external ceramic capacitors. The multi-
fractional charge pump supports a wide range of
input voltages from 2.7V to 5.5V.
The device is available in in 16-lead TQFN 3mm x
3mm package with a max height of 0.8mm.
? 2009 IXYS Corp.
Characteristics subject to change without notice
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Doc. No. 8621DS, Rev. N1.0
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相关代理商/技术参数
LDS8640-002-T3 功能描述:LED照明驱动器 400mA Dual Output Flash/Lamp Drvr RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
LDS8640-008-T2 功能描述:IC LED DRIVER 200MA 16WQFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:PowerLite™ 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性(LDO),PWM,升压(升压) 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB,白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C
LDS8641-002-T4 功能描述:LED照明驱动器 400mA Dual Output Flash/Lamp Drvr RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
LDS8641-008-T2 功能描述:IC LED DRIVER 200MA 16WQFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:PowerLite™ 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性(LDO),PWM,升压(升压) 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB,白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C
LDS8680-002-T5 功能描述:LED照明驱动器 800mA Dual Output Flash/Lamp Drvr RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
LDS8680008-T2 功能描述:IC LED DRIVER PHOTO FLASH 16WQFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:PowerLite™ 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性(LDO),PWM,升压(升压) 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB,白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C
LDS8681-002-T6 功能描述:LED照明驱动器 800mA Dual Output Flash/Lamp Drvr RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
LDS8681008-T2 功能描述:IC LED DRIVER PHOTO FLASH 16WQFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:PowerLite™ 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极,PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND