HV803 Ver la hoja de datos (PDF) - Supertex Inc

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Fabricante

HV803

High-Voltage EL Lamp Driver

Supertex Inc 

HV803

Split Supply Configuration Using a Single

Cell (1.5V) Battery

Split Supply Configuration for Battery

Voltages of Higher than 9.5V

The HV803 can also be used for handheld devices operating

from a single cell 1.5V battery where a regulated voltage is

available. This is shown in Figure 5. The regulated voltage can

be used to run the internal logic of the HV803. The amount of

Figure 5 can also be used with high battery voltages such as 12V

as long as the input voltage, VDD, to the HV803 device is within

its specifications of 2.4V to 9.5V.

current necessary to run the internal logic is typically 30 to 60µA.

Therefore, the regulated voltage could easily provide the current

– OBSOLETE without being loaded down. The HV803 used in this configura-

tion can also be enabled/disabled via logic control signal on the

RSW and REL resistors as shown in Figure 4.

–

Figure 5: Split Supply Configuration

ON

OFF

Regulated

Voltage

VDD

GND

+

Battery

Voltage -

Enable

RSW

Lx

1N4148

0.1µF*

CS

100V

REL

1 VDD REL-osc 8

2 RSW-osc

VA 7

3 Cs

VB 6

4 Lx

GND 5

HV803LG

EL Lamp

*Larger values may be required depending upon supply impedance.

For additional information, see application note AN-H33.

15-8

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