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LT3593
1MHz White LED Driver with
Output Disconnect and One
Pin Current Programming
FEATURES
DESCRIPTION
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Drives Up to Ten White LEDs from a 3V Supply
One Pin Shutdown and Current Programming
LEDs Disconnected in Shutdown
32:1 Linear Brightness Control Range
V IN Range: 2.7V to 5.5V
±5% Output Current Accuracy at Full Scale
Low Shutdown Current: 3μA
1MHz Switching Frequency
Requires Only 1μF Output Capacitor
Low Pro?le 6-Lead DFN (2mm × 2mm × 0.75mm)
and 6-Lead SOT-23 Packages
The LT ? 3593 is a step-up DC/DC converter designed to
drive up to ten white LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED
currents and eliminates the need for ballast resistors. The
device features a unique high side LED current sense that
enables the part to function as a “one wire current source”
where the low side of the LED string can be returned to
ground anywhere.
Additional features include output disconnect in shutdown,
open LED protection and 1-pin shutdown/LED current
control. The CTRL pin is toggled to adjust the LED current
via an internal counter and a 5-bit DAC.
APPLICATIONS
The LT3593 switches at 1MHz, allowing the use of tiny
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Cell Phones
Digital Cameras
PDAs, Handheld Computers
MP3 Players
GPS Receivers
external components. Constant frequency switching re-
sults in low input noise and a small output capacitor. The
LT3593 is available in the 6-lead DFN (2mm × 2mm) as
well as the 6-lead SOT-23 packages.
L , LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Li-Ion Driver for Ten White LEDs
Conversion Ef?ciency
V IN
3V TO 5V
1μF
10μH
1μF
90
80
V IN = 3.6V
10 LEDs
V IN
SW
LT3593
CAP
70
SHUTDOWN AND
CURRENT CONTROL
CTRL
GND
LED
60
50
40
30
0
5
10
15
20
LED CURRENT (mA)
3593 TA01b
3593 TA01a
3593f
1
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LT3593ES6#TRPBF
功能描述:IC LED DRIVR WHITE BCKLGT TSOT-6 RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 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
LT3593ES6-PBF
制造商:LINER 制造商全称:Linear Technology 功能描述:1MHz White LED Driver with Output Disconnect and One Pin Current Programming
LT3593ES6-TRPBF
制造商:LINER 制造商全称:Linear Technology 功能描述:1MHz White LED Driver with Output Disconnect and One Pin Current Programming
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制造商:LINER 制造商全称:Linear Technology 功能描述:16 Channel Buck Mode LED Driver
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LT3595AEUHH#PBF
功能描述:IC LED DRIVR WHITE BCKLGT 56-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 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
LT3595AEUHH#TRPBF
功能描述:IC LED DRIVR WHITE BCKLGT 56-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 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
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制造商:LINER 制造商全称:Linear Technology 功能描述:16 Channel Buck Mode LED Driver
