DataSheet.jp

HV829B の電気的特性と機能

HV829BのメーカーはSupertexです、この部品の機能は「High Voltage EL Lamp Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 HV829B
部品説明 High Voltage EL Lamp Driver
メーカ Supertex
ロゴ Supertex ロゴ 




このページの下部にプレビューとHV829Bダウンロード(pdfファイル)リンクがあります。
Total 4 pages

No Preview Available !

HV829B Datasheet, HV829B PDF,ピン配置, 機能
www.DataSheet4U.com
HV829A/B
HV829A/B
Advance Information
High Voltage EL Lamp Driver
Features
Processed with HVCMOS® technology
V voltage range = 2.7 to 5.5V DC
DD
Output load up to 70nF (20 in2 for 3.5nF/ in2 lamp)
Adjustable DC-DC converter frequency
Continious output voltage regulation control
(from 50V to 200V)
Application
Electronic Organizers
Handheld Portable Computers
Display Signs
Portable Instrumentation Equipment
Typical Application Circuit
Off=VDD
On=GND
General Description
The Supertex HV829A/B are high voltage EL lamp driver inte-
grated circuits designed for driving EL lamps of up to 70nF at
1000Hz. The input supply voltage range is from 2.7V to 5.5V.
These devices use a single inductor, a high voltage switching
FET and a minimum number of passive components. The
HV829A/B will supply the EL lamp with an AC square wave with
a peak-to-peak voltage of two times the set regulated DC
voltage.
The HV829A/B has one internal oscillator and a high voltage EL
lamp driver. The frequency for the external switching MOSFET
is set by an external resistor connected between the RSW-osc pin
and GND. The EL frequency for the HV829A is equal to the
switching frequency divided by 64 where the EL frequency for the
HV829B is equal to the switching frequency divided by 128. Gate
of the external MOSFET is connected to the Gate pin. An
external inductor is connected between the Drain of external
MOSFET and VDD pin. A 0.01-2.5µF capacitor is connected
between Cs and ground. The EL lamp is connected between VA
and VB. The output voltage regulation level is controlled via the
VREG pin for dimming and/or conservation of power. The output
voltage regulation can be controlled continuously between 50V
and 200V depending on the voltage applied to VREG pin (0.75V
to 3V).
The switching MOSFET charges the external inductor and
discharges it into the capacitor at CS. The voltage at CS will start
to increase. Once the voltage at CS reaches a nominal value
chosen by the user, the switching MOSFET is turned OFF to
conserve power. The outputs VA and VB are configured as an H
bridge and are switching in opposite states to achieve the AC
voltage of +/- VREG voltage across the EL lamp.
VDD
Vreg
+
VIN
-
CIN
1 VDD
VA 8
2 RSW-osc
VB 7
3 VREG
Gate 6
4 GND
CS 5
HV829ASG
EL Lamp
BAV21
Lx
CS
250V
VN2224N3 or
TN2425N8
09/05/02
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 prod1ucts, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.

1 Page





HV829B pdf, ピン配列
www.DataSheet4U.com
Enable/Disable Function Table
VIN
VDD
VGATE
CL
TA
Inductor voltage
device supply voltage
Internal supply voltage
Operating temperature
* No LX or CS current when VDD=0V or Hi-Z
Description
Output Disabled
Output Enabled
IC off
Input Voltage (VDD)
Hi
Hi
0V
3.0 12
2.7 5.5 V
10 12 14
70 nF
-25 85 ° C
RSW-osc
VDD
GND
Outputs VA and VB
Hi-Z
Oscillating
Hi-Z
HV829A/B
Gate
0V
Oscillating
0V
Functional Block Diagram
VDD
Rsw-osc
GND
VREG
Switch
OSC
VSENSE
PWM
Control
High
Voltage
Level
Trans-
lators
Switch OSC
Divided by 64
Switch OSC
Divided by 64
Gate
Cs
VA
VB
3


3Pages





ページ 合計 : 4 ページ
 
PDF
ダウンロード
[ HV829B データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
HV829A

High Voltage EL Lamp Driver

Supertex
Supertex
HV829B

High Voltage EL Lamp Driver

Supertex
Supertex


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap