3

HV830

Figure 1: Test Circuit, V

Notes:

1. Murata part # LQH4N221K04 (DC resistance < 5.4

Ω)

2. Larger values may be required depending upon supply impedance.

For additional information, see Application Notes AN-H33 and AN-H34.

Enable/Disable Configuration

The HV830 can be easily enabled and disabled via a logic control

signal on the R

The control signal can be from a microprocessor. R

are typically very high values. Therefore, only 10’s of microam-

Figure 2: Enable/Disable Configuration

peres will be drawn from the logic signal when it is at a logic high

(enable) state. When the microprocessor signal is high the

device is enabled and when the signal is low, it is disabled.

Split Supply Configuration Using a Single

Cell (1.5V) Battery

The HV830 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 3. The regulated voltage can

be used to run the internal logic of the HV830. The amount of

current necessary to run the internal logic is typically 100

µA

provide the current without being loaded down. The HV830

used in this configuration can also be enabled/disabled via

Figure 2.

Split Supply Configuration for Battery

Voltages of Higher than 9.5V

Figure 3 can also be used with high battery voltages such as 12V

as long as the input voltage, V

its specifications of 2.0V to 9.5V.

1

7

2

3

4

8

6

5

OFF = 0V

0.01

µF

200V

0.1

220

BAS21LT1

1M

Ω

5.1M

Ω

10 square inch lamp.

HV830

GND

1nF

1

7

2

3

4

8

6

5

OFF = 0V

200V

4.7

µF

15V

1nF

BAS21LT1

EL Lamp

HV830LG

GND

+

-

Remote

Enable