|
|
PDF HV823 Data sheet ( Hoja de datos )
| Número de pieza | HV823 | |
| Descripción | High Voltage EL Lamp Driver IC | |
| Fabricantes | Supertex Inc | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de HV823 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
Supertex inc.
HV823
High Voltage EL Lamp Driver IC
Features
General Description
►► Processed with HVCMOS® technology
The Supertex HV823 is a high-voltage driver designed for driving EL
►► 2.0 to 9.5V operating supply voltage
lamps of up to 50nF. EL lamps greater than 50nF can be driven for
►► DC to AC conversion
applications not requiring high brightness. The input supply voltage
►► 180V peak-to-peak typical output voltage
►► Large output load capability typically 50nF
►► Permits the use of high-resistance elastomeric
lamp components
►► Adjustable output lamp frequency to control
range is from 2.0V to 9.5V. 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
by connecting the resistors on the RSW-Osc pin and the REL-Osc pin
to the VDD pin, and disabled when connected to GND.
lamp color, lamp life, and power consumption The HV823 has two internal oscillators, a switching MOSFET and a
►► Adjustable converter frequency to eliminate high-voltage EL lamp driver. The frequency of the switching converter
harmonics and optimize power consumption
MOSFET is set by an external resistor connected between the RSW-
►► Enable/disable function
Osc pin and the VDD supply pin. The EL lamp driver frequency is set
►► Low current draw under no load condition
by an external resistor connected between the REL-Osc pin and the
VDD pin. An external inductor is connected between the LX pin and the
Applications
►► Handheld personal computers
►► Electronic personal organizers
►► GPS units
►► Pagers
►► Cellular phones
►► Portable instrumentation
VDD pin. A 0.01µF to 0.1µF capacitor is connected between the CS pin
and the GND. The EL lamp is connected between the VA and VB pins.
The switching MOSFET charges the external inductor and discharges
it into the CS capacitor. The voltage at CS will start to increase. Once the
voltage at CS reaches a nominal value of 90V, the switching MOSFET
is turned OFF to conserve power. The output pins VA and VB are con-
figured as an H-bridge and are switched in opposite states to achieve
180V peak-to-peak across the EL lamp.
For additional information, see Application Note ANH34.
Block Diagram
VDD
RSW-Osc
Enable *
GND
Switch
Osc
Disable
+
C_
VREF
REL-Osc
* Enable is available in die form only.
Q
Q
Output
Osc
Q
Q
LX
CS
VA
VB
Doc. # DSFP-HV823
C082213
Supertex inc.
www.supertex.com
1 page  
Fig. 3: Typical 9.0V Application
2.0MΩ
560µH1
330kΩ
1 VDD REL-Osc 8
2 RSW-Osc VA 7
VDD = VIN = 9.0V
0.1µF2
1N4148
0.01µF
100V
3 CS
VB 6
4 LX
GND 5
1.0nF HV823
16V
For additional information, see Application Notes AN-H33 and AN-H34.
HV823
4.9kΩ
42nF
Equivalent to
12 square inch lamp
Typical Performance
Lamp Size
VIN
IIN
12.0in2
9.0V
30mA
Notes:
1. Murata part # LQH4N561K04 (DC resistance < 14.5Ω)
2. Larger values may be required depending upon supply impedance.
VCS
75V
Typical Performance Curves for Fig. 3 using 12.0in2 EL Lamp
VCS vs. VIN
85
40
80 38
36
75
34
70 32
65
456 7 8
VIN (V)
30
4
5
fEL
380Hz
IIN vs. VIN
6
VIN (V)
Brightness
8.5ft-lm
78
Brightness vs. VIN
8.0
7.5
7.0
6.5
6.0
5.5
4
567
VIN (V)
8
40
38
36
34
32
30
70
IIN vs. VCS (V)
75 80 85
VCS (V)
90
Doc. # DSFP-HV823
C082213
Supertex inc.
5 www.supertex.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet HV823.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HV823 | High Voltage EL Lamp Driver IC | Supertex Inc |
| HV824 | High Voltage EL Lamp Driver |  Supertex |
| HV825 | High Voltage EL Lamp Driver | Supertex Inc |
| HV826 | High Voltage EL Lamp Driver | Supertex Inc |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |