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| 型号： | NCP5005GEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/23页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR NCP5005G |
| 设计资源： | NCP5005 EVB BOM NCP5005GEVB Gerber Files NCP5005 EVB Schematic |
| 标准包装： | 1 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 22V |
| 输入电压： | 3.6V |
| 已供物品： | 板 |
| 已用 IC / 零件： | NCP5005 |
| 其它名称： | NCP5005GEVBOS |
NCP5005
Output Load Drive
In order to optimize the built?in Boost capabilities, one
shall operate the NCP5005 in the continuous output current
mode. Such a mode is achieved by using and external
reservoir capacitor (see Table 1) across the LED.
At this point, the peak current flowing into the LED
diodes shall be within the maximum ratings specified for
these devices. Of course, pulsed operation can be achieved,
due to the EN signal Pin 4, to force high current into the
LED when necessary.
The Schottky diode D1, associated with capacitor C2
(see Figure 9), provides a rectification and filtering
function.
When a pulse?operating mode is acceptable:
? A PWM mode control can be used to adjust the output
current range by means of a resistor and a capacitor
connected across FB pin. On the other hand, the
Schottky diode can be removed and replaced by at
least one LED diode, keeping in mind such LED shall
sustain the large pulsed peak current during the
operation.
TYPICAL OPERATING CHARACTERISTICS
Yield = f(V bat ) @ I out = 4.0 mA/L out = 22 m H
Yield = f(V bat ) @ I out = 10 mA/L out = 22 m H
100
90
80
4 LED/4 mA
100
90
80
4 LED/10 mA
70
5 LED/4 mA
3 LED/4 mA
70
2 LED/10 mA
5 LED/10 mA
3 LED/10 mA
60
50
40
30
20
10
0
2 LED/4 mA
60
50
40
30
20
10
0
2.50
3.00
3.50
4.00
4.50
5.00
5.50
2.50
3.00
3.50
4.00
4.50
5.00
5.50
V bat (V)
Figure 10. Overall Efficiency vs. Power Supply @
I out = 4.0 mA, L = 22 m H
Yield = f(V bat ) @ I out = 15 mA/L out = 22 m H
V bat (V)
Figure 11. Overall Efficiency vs. Power Supply @
I out = 10 mA, L = 22 m H
Yield = f(V bat ) @ I out = 20 mA/L out = 22 m H
100
90
80
3 LED/15 mA
100
90
80
3 LED/20 mA
70
60
5 LED/15 mA
4 LED/15 mA
2 LED/15 mA
70
60
4 LED/20 mA
5 LED/20 mA
2 LED/20 mA
50
40
30
20
10
0
50
40
30
20
10
0
2.50
3.00
3.50
4.00
4.50
5.00
5.50
2.50
3.00
3.50
4.00
4.50
5.00
5.50
Vbat (V)
Figure 12. Overall Efficiency vs. Power Supply @
I out = 15 mA, L = 22 m H
Vbat (V)
Figure 13. Overall Efficiency vs. Power Supply @
I out = 20 mA, L = 22 m H
http://onsemi.com
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| NCP5005SNT1G | 功能描述:LED照明驱动器 ANA WHITE 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 |
| NCP5006 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| NCP5006_06 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Compact Backlight LED Boost Driver |
| NCP5006EVB | 功能描述:LED 照明开发工具 ANA WHITE LED DRIVER EVB 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: |
| NCP5006SNT1 | 功能描述:LED照明驱动器 White LED Backlight 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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