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| 型号： | XRP7603EDB-F |
| 厂商： | Exar Corporation |
| 文件页数： | 5/13页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HIGH PWR 8HSOICN-EP |
| 标准包装： | 46 |
| 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 ~ 1.55MHz |
| 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 |
| 包装： | 管件 |
| 其它名称： | 1016-1338-5 |
X R P 7 6 0 3
5 0 0 m 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 XRP7603 driving 1 or 6 white LEDs in series for up to 500mA 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 500mA 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.
Efficiency versus Vin at Iout = 350mA
Iout versus Vin
100
1 LED
2 LED
3 LED
6 LED
0.360
1 LED
2 LED
3 LED
6 LED
90
0.350
80
0.340
70
60
50
0.330
0.320
5.0
10.0
15.0
20.0
25.0
30.0
5.0
10.0
15.0
20.0
25.0
30.0
Vin (V)
Fig. 4: Efficiency vs Input Voltage
Vin (V)
Fig. 5: Output Current vs Input Voltage
? 2009 Exar Corporation
5/13
Rev. 1.0.0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRP7603EDB-F/TR | 功能描述:电压模式 PWM 控制器 0.5A 29V Non-Sync Buck High Power RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| XRP7603EDBTR-F | 功能描述:LED照明驱动器 Power LED Driver 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 |
| XRP7603EVB | 功能描述:电源管理IC开发工具 Eval Board for XRP7603 Series RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| XRP7604 | 制造商:EXAR 制造商全称:EXAR 功能描述:1A 29V Non-Sync. Buck High Power LED Driver |
| XRP7604EDB-F | 功能描述:LED照明驱动器 1A 29V Non-Sync Buck High Power 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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