
CXLE87126双闪光灯LED输出每个通道可驱动1.5A或0.75A独立闪光模式启用和电影/火炬2兆赫升压转换器可通过ENM引脚的脉宽调制信号编程660ms闪光定时器控制ENM或ENF引脚上的330kΩ下拉电阻器
| 产品型号: | CXLE87126 |
| 产品类型: | 照明驱动 |
| 产品系列: | LED闪灯 |
| 产品状态: | 量产 |
| 浏览次数: | 71 次 |
产品简介
两个LED输出接收器可以在外部短接在一起,以获得更高功率的单闪LED,最高可达1.5A的连续LED电流。热调节集成在闪光模式,以限制集成电路的温度,并持续提供最大允许输出电流。
CXLE87126内置多种保护功能,包括逐周输入电流限制保护、输出过压保护、LED故障(开路或短路)保护和热关机保护。停机时泄漏电流小于1μA。
•输入电压范围:3V至5V
•双闪光灯LED输出
•每个通道最多可驱动1.5A或0.75A
•高效LED驱动器(高达90%)
•2兆赫升压转换器
•非常小的感应器:1.0μH
•独立闪光模式启用和电影/火炬
模式启用引脚
•闪光模式和电影/火炬模式LED电流
可通过ENM引脚的脉宽调制信号编程
•一个电阻器设置闪光模式LED电流
•一个电阻设置电影/火炬模式LED电流
•集成热调节控制
•660ms闪光定时器控制
•ENM或ENF引脚上的330kΩ下拉电阻器
•LED开路或短路保护
•输出过压保护
•循环电感电流限制
•小于1μA的关闭电流
技术参数
| 输入电压范围 (VIN) | ≤ 3~5VV |
|---|---|
| 输出电压 (VOUT) | adjV |
| 输出电流 (IOUT) | 750mAA |
| 工作频率 | 2MHzHz |
| 转换效率 | 97%% |
| 封装类型 | TDFN-3x2-14L |
| Dimming method | PWM |
| 功率管 | 内置MOS |
| 功耗 | 1μA |
| Thd | <±3% |
| Pf value | .9 |
| Topology | LED闪灯 |
| Application | 照明驱动 |
| Topology type | 降压 |
| Ripple | <5% |
| Operating temp | -40℃~85℃ |
| Protection | OVP/OCP/短路保护 |
| Certification | UL/CE |
| Features | 1通道 |
产品详细介绍
目录
7.相关产品
产品概述 返回TOP
The CXLE87126 is the ideal power solution for highpower flash LEDs used with cell phone camera modules or digital still cameras. It is a highly integrated step-up DC/DC converter with very high switching frequency, fixed at 2MHz, providing a very small total solution for portable photo flash. The CXLE87126 has separate Flash mode and Movie/Torch mode enable pins for maximum flexibility. Flash mode is usually used with 660ms timer control to generate a high intensity flash. The Flash mode and Movie/Torch mode maxim LED current is programmed by external resistors respectively, making the flash LED solution simple to control. The real LED current at Flash mode and Movie/Torch mode can be programmed by external PWM signal at ENM pin.
The two LED output sinks can be shorted together externally for higher power single flash LEDs, up to 1.5A continuous LED current. Thermal regulation is integrated in Flash mode to limit the IC’s temperature and continuously provide the maximum allowed output current.
Various protection features are built into the CXLE87126, including cycle-by-cycle input current limit protection, output over-voltage protection, LED fault (open or short) protection and thermal shutdown protection. The leakage current in shutdown is less than 1μA.
The CXLE87126 is available in Green TDFN-3×2-14L package. It operates over an ambient temperature range of -40℃ to +85℃.
产品特点 返回TOP
• Input Voltage Range: 3V to 5V
• Dual Flash LED Outputs
• Drive Up to Total 1.5A or 0.75A per Channel
• High Efficiency LED Driver (Up to 90%)
• 2MHz Step-Up Converter
• Very Small Inductor: 1.0μH
• Independent Flash Mode Enable and Movie/Torch
Mode Enable Pins
• Flash Mode and Movie/Torch Mode LED Current
Can be Programmed via PWM Signal at ENM Pin
• One Resistor Sets Flash Mode LED Current
• One Resistor Sets Movie/Torch Mode LED Current
• Integrated Thermal Regulation Control
• 660ms Flash Timer Control
• 330kΩ Pull-Down Resistor on ENM or ENF Pin
• LED Open or Short Protection
• Output Over-Voltage Protection
• Cycle-by-Cycle Inductor Current Limit
• Less than 1μA Shutdown Current
• Available in Green TDFN-3×2-14L Package
• Temperature Range: -40℃ to +85℃
应用范围 返回TOP
Portable Equipments
技术规格书(产品PDF) 返回TOP
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产品封装图 返回TOP

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LED闪光灯驱动器 |
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|
Part Number |
CH |
VIN(Min) (V) |
VIN(Max) (V) |
Output Current(mA) |
SHDN Iq (μA) |
Frequency (MHz) |
Package |
|
1 |
2.7 |
5.5 |
500 |
1 |
2.2 |
TDFN-3x3-10L |
|
|
1 |
2.7 |
5.5 |
500 |
1 |
2.2 |
TDFN-3x3-10L |
|
|
1 |
2.7 |
5.5 |
700 |
1 |
2.2 |
TDFN-3x3-10L |
|
|
1 |
2.7 |
5.5 |
700 |
1 |
2.2 |
TDFN-3x3-10L |
|
|
2 |
3 |
5 |
750 |
1 |
2 |
TDFN-3x2-14L |
|
|
2 |
3 |
5 |
750 |
1 |
2 |
TDFN-3x2-14L |
|
|
2 |
3 |
5 |
750 |
1 |
2 |
TDFN-3x2-14L |
|
|
1 |
2.7 |
5.5 |
200 |
1 |
1.2 |
TDFN-2x2-6L |
|

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