sp4425cn Exar Corporation, sp4425cn Datasheet - Page 11

• Manufacturer Part Number: sp4425cn
• Description: Electroluminescent Lamp Driver Low Voltage Applications Corporation
• Manufacturer: Exar Corporation

Figure 1. EL output voltage in discrete steps at EL1 output
Figure 2. Voltage pulses released from the coil to the EL driver circuitry
Figure 4. El differential output waveform of the EL1 and EL2 outputs
SP4425DS/20
Figure 3. EL voltage waveforms from the EL1 and EL2 outputs
EL1 output; 32 charge steps per half cycle
32 coil pulses per half cycle; 94% duty cycle.
Differential representation (EL1-EL2)
SP4425 Electroluminescent Lamp Driver
11
V
PEAK
=80V (typical)
-EL2 Output
EL1 Output
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V = 160V
(typical)
PP
EL1 Output
-EL2 Output