The CXLE88128 is a large-current charge pump designed specifically for white LEDs used in camera flash applications. Only one small bucket capacitor is required to develop the output drive, providing a low EMI solution compared with inductive boost regulator. The CXLE88128 has two operation modes: Flash mode and Movie mode. In Flash mode, the CXLE88128 is capable of delivering up to 700mA. A safety timer is also included to ensure the LED can not be on indefinitely and overheat. The CXLE88128 is available in a 10-pin TDFN package
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[ CXLE88128 ]"
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产品概述 返回TOP
CXLE88128是一颗大电流输出的电荷泵LED驱动器，用以驱动照相手机或者其他便携式设备的Flash LED。通过外接的两个PIN，可选择其工作模式：Flash模式或Torch模式。在Flash模式下，CXLE88128可输出至少500mA，持续至少500毫秒；或者输出高至700mA，但持续时间需相应减少，比如350毫秒。在Torch模式下，CXLE88128可持续输出Flash模式下设定的40％的电流。在Flash模式下,CXLE88128始终以2X Charge Pump模式工作；而在Torch模式下，它会自动根据负载电流、LED正向导通电压和输入电压的大小，来优化工作模式，提高效率。The CXLE88128 is a large-current charge pump designed specifically for white LEDs used in camera flash applications. Only one small bucket capacitor is required to develop the output drive, providing a low EMI solution compared with inductive boost regulator. The CXLE88128 has two operation modes: Flash mode and Movie mode. In Flash mode, the CXLE88128 is capable of delivering up to 700mA. A safety timer is also included to ensure the LED can not be on indefinitely and overheat. The CXLE88128 is available in a 10-pin TDFN package.
产品特点 返回TOP
• 高达3A的输出电流
• 轻负载时自动跳跃周期以提高效率
• 230ns最小导通时间
• 35V输入浪涌电压保护
• 内部集成160/110mΩ的DMOS开关管
• 输入电压范围：4.5V至30V
• 输出电压可调：0.925V至20V
• 效率高达95%
• 关断电流<1μA
• 340KHz固定开关频率
• 可编程的软启动
• 过温保护和过流保护
• 输入过压/欠压保护
• SOP-8（EP）封装
• 符合RoHS规范及Pb-Free
Input Voltage Range — 2.7V to 5.5V
Flash and Movie — Two Selectable Modes
Up to 700mA Output Current — Flash Mode
Flash Mode Safety Timer Shut-Off
1X and 2X Automatic Mode for High Efficiency
External Flash Control Pin for Synchronization
to a Camera Module or Graphics Controller
Short-Circuit, Over-Voltage, Over-Current and
Over-Temperature Protection
Soft-Start Functionality
3mm′3mm TDFN-10 Package
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
应用范围 返回TOP
• 分布式电源
• 网络系统
• PC设备
• 便携产品
Mobile Camera Phones
Digital Cameras
PDAs with Built-In Cameras
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产品封装图 返回TOP
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白光LED驅動器 > LED闪光灯驱动 |
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Part Number |
remark |
Vin (V) |
Iout (mA) |
Max LED |
IQ (mA) |
Freq. (KHz) |
Peak Efficency (%) |
Package |
|
Synchronous Boost Flash LED Driver and Dual 1.5A High Side Current Source with I2C Compatible Interface |
2.5-5.5 |
2500 |
2 |
0.45 |
2000 |
85 |
1.410mm X 1.810mm WCSP12 |
|
|
Synchronous Boost Flash LED Driver and Dual 1.5A High Side Current Source with I2C Compatible Interface |
2.5-5.5 |
1500 |
2 |
0.45 |
2000 |
85 |
1.410mm X 1.810mm WCSP12 |
|
|
1.5A Synchronous Boost LED Flash Driver with I2C Compatible Interface |
2.5-5.5 |
1500 |
1 |
0.45 |
2000 |
85 |
1.410mm X 1.810mm WCSP12 |
|
|
Charge Pump Flash LED Driver with Safety Timer |
2.7~5.5 |
700 |
1 |
0.5/4 |
2400 |
95 |
TDFN-10 |
|
|
1A Charge Pump LED Driver |
2.7~5.5 |
1000 |
1 |
0.5/1.5 |
2200 |
97 |
TDFN-10 |
|
|
1.5A Dual WLED Flash Driver with I2C Compatible Interface |
2.7~5.5 |
1500 |
2 |
0.48 |
2000 |
85 |
TDFN-10 |
|
|
1.5A Synchronous Boost LED Flash Driver with I2C Compatible Interface |
2.5~5.5 |
1500 |
1 |
1.28 |
4000 |
85 |
WCSP-9 |
|
