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參數資料
| 型號： | HV833 |
| 廠商： | Supertex, Inc. |
| 英文描述： | High Voltage EL Lamp Driver |
| 中文描述： | 高壓EL燈驅動器 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 501K |
| 代理商： | HV833 |
HV833
HV833
High Voltage EL Lamp Driver
Features
1.8V to 6.5V operating supply voltage
DC to AC conversion
Separately adjustable lamp and converter frequency
Output voltage regulation
Enable/disable function
Patented output timing for high efficiency
<100nA shutdown current
Split supply capability
LCD backlighting
General Description
The Supertex HV833 is a high voltage driver designed for driving
EL lamps of up to 35nF (10-12in
2
). The input supply voltage
range is from 1.8V to 6.5V. The device uses a single inductor and
a minimum number of passive components. The nominal
regulated output voltage that is applied to the EL lamp is
±
90V.
The chip can be enabled/disabled by connecting the resistor on
R
SW-OSC
to V
DD
/ground.
The HV833 has two internal oscillators, a switching MOSFET,
and a high voltage EL lamp driver. The frequency for the
switching MOSFET is set by an external resistor connected
between the R
pin and the supply pin V
. The EL lamp
driver frequency is set by an external resistor connected between
R
pin and the V
DD
pin. An external inductor is connected
between the L
and V
DD
or V
pins. A 0.003-0.1
μ
F capacitor is
connected between C
S
and ground. The EL lamp is connected
between V
A
and V
B
.
The switching MOSFET charges the external inductor and
discharges it into the capacitor at C
S
. The voltage at C
will start
to increase. Once the voltage at C
reaches a nominal value of
90V, the switching MOSFET is turned OFF to conserve power.
The outputs V
and V
are configured as an H bridge and are
switching in opposite states to achieve 180V peak-to-peak
across the EL lamp.
Applications
Portable Transceivers
Remote Control Units
Calculators
PDAs
Global Positioning Systems (GPS)
05/02/02
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
Demo Kit
Available
EL Lamp
+
_
1
2
3
4
8
6
5
HV833MG
7
V
IN
V
DD
R
SW-osc
R
EL-osc
Gnd
L
X
C
S
V
B
V
A
L
X
V
DD
Enable Signal
ON=V
DD
OFF=0
1N914
Cs
100V
Typical Application
相關PDF資料 |
PDF描述 |
|---|---|
| HV833MG | High Voltage EL Lamp Driver |
| HV833X | High Voltage EL Lamp Driver |
| HV833DB1 | EL Lamp Driver |
| HV857DB1 | EL Lamp Driver |
| HV857 | High Voltage EL Lamp Driver for Low Noise Applications |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HV833_07 | 制造商:SUPERTEX 制造商全稱:SUPERTEX 功能描述:High Voltage EL Lamp Driver |
| HV833DB1 | 功能描述:電源管理IC開發工具 HV833 Demo Brd RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| HV833MG | 功能描述:顯示驅動器和控制器 HVCMOS 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: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| HV833MG-G | 功能描述:顯示驅動器和控制器 HVCMOS 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: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| HV833X | 制造商:SUPERTEX 制造商全稱:SUPERTEX 功能描述:High Voltage EL Lamp Driver |
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