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Electroluminescent
Lamp Drivers |
|
High Side Power Switches |
| IMP offers a full line of Electroluminescent
(EL) lamp driver integrated circuits. The four EL lamp-driving
functions are integrated on chip. These are the switch-mode
power supply, its high-frequency oscillator, the high-voltage
H-bridge lamp driver and its low-frequency oscillator. The IMP522
dual EL lamp driver allows two EL lamps to be driven independently.
Either or both EL lamp driver outputs are activated with a Lamp
Select pin. Drive voltage is 220 Vpeak-to-peak. |
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The IMP527 operates from a single 1.5V battery cell and develops a
180V peak-to-peak output voltage for driving EL lamps to maximum brightness.
The IMP527 also has a shutdown mode where supply current is reduced
to 1 microampere typically. The IMP528 features a 220 V peak-to-peak
output voltage for driving EL lamps to maximum brightness. The 220
volt AC peak-to-peak drive signal is developed from a 2.0 volt to
6.5 volt DC input voltage. For EL lamps commonly used in battery powered
handheld communication and computing devices, the IMP528 output will
be held constant by an internal regulator, maximizing brightness over
the full battery life. This is an important benefit in battery operated
applications. The IMP560 has the same pin-out as the IMP803, but output
drive voltage is limited to 120V peak-to-peak, reducing inductor current
by typically 50%. For small EL lamps or applications with moderate
ambient light levels, the IMP560 offers significant power savings.
The IMP525 operates at voltages as low as 0.9V. It is ideal for single-cell
battery applications. The IMP803 is designed as a direct replacement
for the Supertex HV803. Two application notes AN-1 and AN-4 are available
to assist you in designs. (http://www.ds-imp.com.cn/application.html)
EL driver package options include the 8-pin SO and 8/10-pin MicroSO.
Please call £¨86£©574-8790£6358 or email sales@ds-imp.com.cn
for EL driver samples and price information. |
| |
| PEL Driver Selection Guide and
Data Sheets |
IMP
Part
Number |
Packages
|
Input
Voltage
Range (V) |
Output
Voltage (Vpp) |
Number
of Drivers |
Samples
Available |
Data
Sheet |
|
IMP522
|
10-MicroSO
|
2.0 to
6.5V |
220 |
2 |
Prototype:
Feb. 2001 |
|
|
IMP525
|
8-SO,
8-MicroSO, Die |
0.9 to
2.5V |
112 |
1 |
Yes |
|
| |
8-SO,
8-MicroSO, Die |
0.9
to 2.5V |
180 |
1 |
Yes |
|
|
IMP528
|
8-SO,
8-MicroSO, Die |
2.0 to
6.5 |
220 |
1 |
Yes |
|
|
IMP560
|
8-SO,
8-MicroSO, Die |
2.0 to
6.5 |
120 |
1 |
Yes |
|
|
IMP803
|
8-SO,
8-MicroSO, Die |
2.0 to
6.5 |
180 |
1 |
Yes |
|
|
| IMP also offers
EL drivers in die form. For additional information download our die
specifications: ELDie.pdf
Cross Reference
|
IMP Part Number |
Supertex Part Number
|
|
IMP525
|
HV825
|
|
IMP560
|
? |
|
IMP803
|
HV803
|
|
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Power Management
|
|
Data Communications |
|
Wafer Foundry |
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