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參數(shù)資料
| 型號： | HV857 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | High Voltage EL Lamp Driver for Low Noise Applications(高電壓,低噪雙路EL燈驅(qū)動器) |
| 中文描述： | 高壓發(fā)光燈驅(qū)動器的低噪聲的應(yīng)用（高電壓，低噪雙路發(fā)光燈驅(qū)動器） |
| 文件頁數(shù)： | 6/14頁 |
| 文件大?。?/td> | 638K |
| 代理商： | HV857 |
6
HV857
1235 Bordeaux Drive, Sunnyvale, CA 94089
TEL: (408) 744-0100 FAX: (408) 222-4895
www.supertex.com
11/14/01rev.10
2001 Supertex Inc. All rights reserved. Unauthorized use or reproduction prohibited.
Split Supply Configuration
The HV857 can also be used for handheld devices operating
from a battery where a regulated voltage is available. This is
shown in Figure 2. The regulated voltage can be used to run
the internal logic of the HV857. The amount of current neces-
sary to run the internal logic is 150
μ
A Max at a V
of 3.0V.
Therefore, the regulated voltage could easily provide the
current without being loaded down.
Figure 2: Split Supply and Enable/Disable Configuration
Enable/Disable Configuration
The HV857 can be easily enabled and disabled via a logic control
signal on the R
SW
and R
EL
resistors as shown in Figure 2 below.
The control signal can be from a microprocessor. R
and R
are typically very high values. Therefore, only 10’s of microam-
peres will be drawn from the logic signal when it is at a logic high
(enable) state. When the microprocessor signal is high the
device is enabled and when the signal is low, it is disabled.
EL Lamp
+
_
C
S
1
2
3
4
8
6
5
HV857MG
7
Battery Voltage=V
IN
V
DD
R
SW-osc
R
EL-osc
Gnd
L
X
C
S
V
B
V
A
L
X
C
IN
Regulated Voltage=V
DD
Enable Signal
ON=V
DD
OFF=0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HV857_07 | 制造商:SUPERTEX 制造商全稱:SUPERTEX 功能描述:Low Noise, High Voltage EL Lamp Driver IC |
| HV857DB1 | 功能描述:電源管理IC開發(fā)工具 HV857 Demo Board 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 |
| HV857K7-G | 功能描述:顯示驅(qū)動器和控制器 High Voltage Low Noise EL Lamp RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| HV857L | 制造商:SUPERTEX 制造商全稱:SUPERTEX 功能描述:Low Noise, High Voltage EL Lamp Driver IC |
| HV857LDB1 | 功能描述:電源管理IC開發(fā)工具 HIGH VOLTAGE LOW NOISE EL LAMP DRIVER DEMOBOARD 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 |
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