IMP528/D Ver la hoja de datos (PDF) - IMP, Inc

Número de pieza

componentes Descripción

Fabricante

IMP528/D

High-Voltage EL Lamp Driver – 220 VPP Drive

IMP, Inc 

IMP528

Application Information

Test and Application Circuit, 3.0V

Figure 1 shows the IMP528 configured to drive an EL lamp with a

3.0V input.

2.7MΩ

REL

+

VIN = 3.0V –

220µH1 L EN3

FDLL400

910kΩ

RSW

0.1µF2

10nF

CS

200V

1 VDD

REL-OSC 8

2 RSW-OSC

VA 7

3 CS

VB 6

4 LX

GND 5

IMP528

Note:

1. Murata part # LQH4N221K04 (DC resistance <5Ω)

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

3. EN is connected to VDD to enable and to GND to disable.

Figure 1. 3.0V Application

EL lamp

10nF

(3 in2 lamp)

528_03.eps

Dual Supply Operation with 1.5V Battery

The IMP528 can also be operate from a single battery cell when a

regulated voltage higher than 2.0V is also available. This dual

supply configuration, shown in Figure 2, uses the regulated

voltage to operate the IMP528 while the energy for the high-

voltage boost circuit comes from the battery.

Regulated Voltage

(2.0V to 6.5V)

REL

RSW

L

EN2

Battery +

Voltage – VIN

FDLL400

0.1µF1

CS

10nF

200V

1 VDD

REL-OSC 8

2 RSW-OSC

VA 7

3 CS

VB 6

4 LX

GND 5

IMP528

EL lamp

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

2. EN is connected to VDD to enable and to GND to disable.

Figure 2. Dual Supply Operation

4

408-432-9100/www.impweb.com

528_04.eps

© 2001 IMP, Inc.

Share Link: