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Can be used with the HV55 and HV56 to provide 220V
push pull operation
General Description
The HV4522 and HV4622 are low-voltage serial to high-voltage
parallel converters with P-Channel open drain outputs. These
devices have been designed for use as drivers for AC-electrolu-
minescent displays. They can also be used in any application
requiring multiple output high-voltage current source capabilities
such as driving inkjet and electrostatic print heads, plasma
panels, or vacuum fluorescent displays.
These devices consist of a 32-bit shift register, 32 data latches,
and control logic to perform polarity and blanking functions. Data
is shifted through the shift register on the logic high-to-low
transition of the clock. The HV4522 shifts in the counterclockwise
direction when viewed from the top of the package and the
HV4622 shifts in the clockwise direction. A data output buffer is
provided for cascading devices. This output reflects the current
status of the last bit of the shift register. The data in the shift
register is latched when the latch enable pin is brought to logic
high and then returned to ground. If the latch enable pin is held
high, the latch becomes transparent and the shift register data is
directly reflected in the outputs.
For applications requiring active pull down as well as pull up, the
HV4522 and HV4622 can be paired with the HV55 and HV56
devices, respectively.
Absolute Maximum Ratings
1
Supply voltage, V
DD
Off state output voltage
Logic input levels
Ground current
2
Continuous total power dissipation
3
Operating temperature range
Storage temperature range
Lead temperature 1.6mm (1/16 inch)
from case for 10 seconds
Plastic
Ceramic
HV4522/ HV4622
+0.5V to -16V
+0.5V to -240V
+0.5V to V
DD
- 0.3V
1.5A
1200mW
1500mW
Ceramic -55擄C to +125擄C
Plastic -40擄C to +85擄C
-65擄C to +150擄C
260擄C
Notes:
1. All voltages are referenced to V
SS
.
2. Duty cycle is limited by the total power dissipated in the package.
3. For operation above 25擄C ambient derate linearly to maximum operating
temperature at 20mW/擄C for plastic and at 15mW/擄C for ceramic.
05/01/03
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
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