HV853(2007) Ver la hoja de datos (PDF) - Supertex Inc
Número de pieza
componentes Descripción
Fabricante
HV853 Datasheet PDF : 7 Pages
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HV853
Pin Description
Pin # Name Description
1
VDD Input supply voltage pin.
An external resistor to VDD will set the EL lamp frequency. The EL frequency is inversely proportional to
the REL resistor value. A 1.5MΩ resistor would provide a nominal lamp frequency of 294Hz
2
REL
fEL = (1.5MΩ)(294)
REL
When using an external clock to set the EL lamp frequency, the REL pin should be connected to
ground.
3
EN
Enable input pin. Logic high will turn the device on. An external R-C circuit can be added for a delayed
turn off.
Logic input pin. An external logic clock applied to this pin can be used to set the EL lamp frequency
4
CLKIN
(see Figure 3). The EL lamp frequency is the external clock frequency divided by 128. This is useful
for applications requiring the EL lamp to be synchronized to a system clock. Connect to ground when
not in use.
5
CLKEN
Logic input pin. Logic high will cause the EL lamp frequency to be set by the CLKIN input. Logic low will
cause the EL lamp frequency to be set by the external REL resistor.
6
GND IC ground pin.
7
VB EL lamp driver output pin. The EL lamp is connected across VA and VB terminals.
8
VA EL lamp driver output pin. The EL lamp is connected across VA and VB terminals.
5
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