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| 型号： | SP7600EN2-L |
| 厂商： | Exar Corporation |
| 文件页数： | 5/13页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR PWM STP-DWN 8HNSOIC |
| 标准包装： | 98 |
| 恒定电流： | 是 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 通用 |
| 类型 - 次要： | 白色 LED |
| 频率： | 960kHz ~ 1.44MHz |
| 电源电压： | 4.5 V ~ 29 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm Width）裸露焊盘 |
| 供应商设备封装： | 8-SOIC-EP |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
| 配用： | 1016-1233-ND - EVAL BOARD FOR SP7600 |
| 其它名称： | SP7600EN2-L-ND |
S P 7 6 0 0
2 A 2 9 V N o n - S y n c . B u c k H i g h P o w e r L E D D r i v e r
TYPICAL PERFORMANCE CHARACTERISTICS
The typical performance characteristics follow and begin with an illustration of the efficiencies that
can be obtained with the SP7600 driving 1 or 6 white LEDs in series for up to 2A output current.
For the 6 LED applications with a 24V input, the duty cycle is high and an efficiency of 94% can be
obtained. For 12V input and 1 LED at 2A output, the duty cycle is much lower, but the efficiency is
still over 80%. Note: to improve line regulation a small 22pF ceramic capacitor C6 should be placed
from VFB to GND to filter out any noise obtained on the sensitive FB pin.
Scope photos of output ripple are shown for the typical application circuit for 6V input at 150mVpp
ripple and at 29V input with over 400mVpp output ripple, both shown with no output capacitor. For
comparison, an output ripple scope photo is shown with only 70mVpp when a 1uF capacitor is used
at the output. For applications sensitive to output ripple, adding this relatively small 1206 sized 1uF
50V ceramic capacitor to the output provides a very good reduction in output ripple but since the
value is only 1uF the circuit will still provide good PWM output response.
Vin startup scope photos are shown for 6V, 12V and 29V input with no problems in startup as
shown in the Vout, VFB and especially the inductor current signal ILX.
The last scope photos are for the output short circuit which causes a hiccup mode. The output can
be shorted which causes a controlled automatic reset or hiccup mode of about 50 to 100msec
period.
All data taken at V IN = 12V, T A = 25°C, unless otherwise specified - Schematic and BOM from Application Information
section of this datasheet.
Fig. 4: Efficiency vs Input Voltage
Fig. 5: Output Current vs Input Voltage
? 2009 Exar Corporation
5/13
Rev. 2.0.0
相关PDF资料 |
PDF描述 |
|---|---|
| SPB2 | PANEL SWING KIT |
| SPIKECUBE | SURGE SUPPRESSR 1OUT DIRECT PLUG |
| SPIKESTIK | SURGE SUPPRESSOR SPIKE STIK 6OUT |
| SPS-615-HG | SURGE SUPP 6OUT 15'CORD HOSP GRD |
| SR202 | SHELF FIXED 4-POST HEAVY DUTY |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP7600EN2-L/TR | 功能描述:LED照明驱动器 2A 29V NON-SYNC BUCK HIGH PWR 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 |
| SP7601 | 制造商:EXAR 制造商全称:EXAR 功能描述:29V High Voltage LED Driver |
| SP7601_EB | 制造商:EXAR 制造商全称:EXAR 功能描述:29V High Voltage LED Driver |
| SP7601EB | 功能描述:LED 照明开发工具 Eval Board for SP7601 Series RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| SP7601EK1-L | 功能描述:LED照明驱动器 High Curr DC-to-DC Buck LED Drvr 1.2MHz 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 |
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