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參數(shù)資料
| 型號： | NCP5005 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Compact Backlight LED Boost Driver(背光LED升壓驅(qū)動器) |
| 中文描述： | 緊湊型背光LED升壓驅(qū)動器（背光的LED升壓驅(qū)動器） |
| 文件頁數(shù)： | 17/23頁 |
| 文件大小： | 239K |
| 代理商： | NCP5005 |
NCP5005
http://onsemi.com
17
Digital Control
Due to the EN pin, a digitally controlled luminosity can
be implemented by providing a PWM signal to this pin (see
Figure 31). The output current depends upon the Duty
Cycle, but care must be observed as the DC/DC converter
is continuously pulsed ON/OFF and noise are likely to be
generated.
Figure 31. Typical SemiPulsed Mode of Operation
EN
1
5
V
out
V
bat
R1
NCP5005
L1
22 H
V
bat
C1
4.7 F
GND
U1
4
2
GND
GND
FB
3
D1
MBR0530
22
GND
GND
Pulse
C2
1.0 F
NOTE: Pulse width and frequency depends upon the application constraints.
D6
D5
D4
D3
D2
LWT67C LWT67C LWT67C
LWT67C LWT67C
V
load
The PWM operation, using the EN pin as a digital
control, is depicted in Figures 32 and 33. The tests have
been carried out at room temperature with V
bat
= 3.60 V,
L = 22 H, five LEDs in series, RFB = 22 .
PWM
VFB
VPWM
V
load
Figure 32. Operation @ PWM = 10 kHz, DC = 10%
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| NCP5005GEVB | 功能描述:電源管理IC開發(fā)工具 NCP5005 EVAL BRD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| NCP5005SNT1G | 功能描述:LED照明驅(qū)動器 ANA WHITE LED DRIVER RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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| NCP5006_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Compact Backlight LED Boost Driver |
| NCP5006EVB | 功能描述:LED 照明開發(fā)工具 ANA WHITE LED DRIVER EVB RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
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