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PDF HV825 Data sheet ( Hoja de datos )
| Número de pieza | HV825 | |
| Descripción | High Voltage EL Lamp Driver | |
| Fabricantes | Supertex Inc | |
| Logotipo |  |
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Supertex inc.
HV825
High Voltage
EL Lamp Driver IC
Features
►► Processed with HVCMOS® technology
►► 1.0 to 1.6V operating supply voltage
►► DC to AC conversion
►► Output load of typically up to 6.0nF
►► Adjustable output lamp frequency
►► Adjustable converter frequency
►► Enable function
Applications
►► Pagers
►► Portable transceivers
►► Cellular phones
►► Remote control units
►► Calculators
General Description
The Supertex HV825 is a high voltage driver designed for driv-
ing EL lamps typically up to 6.0nF. The input supply voltage range
is from 1.0V to 1.6V. The device uses a single inductor and a
minimum number of passive components. The typical output
voltage that can be applied to the EL lamp is ±56V.
The HV825 can be enabled/disabled by connecting the RSW-Osc resistor
to VDD/GND.
The HV825 has two internal oscillators, a switching bipolar junction transistor
(BJT), and a high voltage EL lamp driver. The frequency for the switching
BJT is set by an external resistor connected between the RSW-Osc pin and
the VDD supply pin. The EL lamp driver frequency is set by an external
resistor connected between REL-Osc pin and the VDD pin. An external
inductor is connected between the LX and VDD pins. A 0.01 to 0.1µF,
100V capacitor is connected between the CS pin and the GND pin. The
EL lamp is connected between the VA pin and the VB pin.
The switching BJT charges the external inductor and discharges it into the
0.01 to 0.1µF, 100V capacitor at the CS pin. The voltage at the CS pin will
start to increase. The outputs VA and VB are configured as an H-bridge
and are switching in opposite states to achieve a peak-to-peak voltage of
two times the VCS voltage across the EL lamp.
For additional information, see Application Notes AN-H33 and AN-
H34.
Block Diagram
VDD
RSW-Osc
GND
Switch
Osc
REL-Osc
Q
Q
Output
Osc
Q
Q
LX
CS
VA
VB
Doc.# DSFP-HV825
C072913
Supertex inc.
www.supertex.com
1 page  
8-Lead MSOP Package Outline (MG)
3.00x3.00mm body, 1.10mm height (max), 0.65mm pitch
D
8
θ1
HV825
Note 1
(Index Area
D/2 x E1/2)
E1 E
1
Top View
A A2
A1
A
Seating
Plane
eb
Side View
A
L2 Gauge
Plane
L
L1
θ
View B
Seating
Plane
View B
View A-A
Note:
1. A Pin 1 identifier must be located in the index area indicated. The Pin 1 identifier can be: a molded mark/identifier; an embedded metal marker; or
a printed indicator.
Symbol
A A1 A2 b D E E1 e L L1 L2 θ θ1
MIN 0.75* 0.00 0.75 0.22 2.80* 4.65* 2.80*
0.40
0O 5O
Dimension
(mm)
NOM
-
-
0.85
-
3.00
4.90
3.00
0.65
BSC
0.60
0.95
REF
0.25
BSC
-
-
MAX 1.10 0.15 0.95 0.38 3.20* 5.15* 3.20*
0.80
8O 15O
JEDEC Registration MO-187, Variation AA, Issue E, Dec. 2004.
* This dimension is not specified in the JEDEC drawing.
Drawings are not to scale.
Supertex Doc. #: DSPD-8MSOPMG, Version I041309.
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline
information go to http://www.supertex.com/packaging.html.)
Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives
an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability
to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and
specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com)
©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.
Supertex inc.
Doc.# DSFP-HV825
C072913
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
5 www.supertex.com
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet HV825.PDF ] | |
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