HV825LG Supertex, HV825LG Datasheet

Display Drivers HVCMOS

HV825LG

Manufacturer Part Number
HV825LG
Description
Display Drivers HVCMOS
Manufacturer
Supertex
Datasheet

Specifications of HV825LG

Mounting Style
SMD/SMT
Package / Case
SOIC-8 Narrow
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HV825LG
Manufacturer:
SUPERTEX
Quantity:
8 000
Part Number:
HV825LG
Manufacturer:
SUPERTEX
Quantity:
20 000
Features
Applications
Block Diagram
Processed with HVCMOS
1.0 to 1.6V operating supply voltage
DC to AC conversion
Output load of typically up to 6.0nF
Adjustable output lamp frequency
Adjustable converter frequency
Enable function
Pagers
Portable transceivers
Cellular phones
Remote control units
Calculators
REL-Osc
RSW-Osc
GND
VDD
®
technology
Switch
Osc
EL Lamp Driver IC
High Voltage
General Description
The Supertex HV825 is a high voltage driver designed for driving
EL lamps typically up to 6.0nF. The input supply voltage range
is from 1.0V to 1.6V. The device uses a single inductor and a
minimum number of passive components. The typical output
voltage that can be applied to the EL lamp is ±56V.
The HV825 can be enabled/disabled by connecting the R
resistor to VDD/GND.
The HV825 has two internal oscillators, a switching bipolar junction
transistor (BJT), and a high voltage EL lamp driver. The frequency
for the switching BJT is set by an external resistor connected be-
tween the RSW-Osc pin and the VDD supply pin. The EL lamp
driver frequency is set by an external resistor connected between
REL-Osc pin and the VDD pin. An external inductor is connected
between the LX and VDD pins. A 0.01 to 0.1µF, 100V capacitor
is connected between the CS pin and the GND pin. The EL lamp
is connected between the VA pin and the VB pin.
The switching BJT charges the external inductor and discharges it
into the 0.01 to 0.1µF, 100V capacitor at the CS pin. The voltage
at the CS pin will start to increase. The outputs VA and VB are
configured as an H-bridge and are switching in opposite states to
achieve a peak-to-peak voltage of two times the V
the EL lamp.
For additional information, see Application Notes AN-H33
and AN-H34.
Output
Osc
Q
Q
Q
Q
LX
CS
VA
VB
CS
voltage across
HV825
SW-Osc

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HV825LG Summary of contents

Page 1

... High Voltage EL Lamp Driver IC General Description The Supertex HV825 is a high voltage driver designed for driving EL lamps typically up to 6.0nF. The input supply voltage range is from 1.0V to 1.6V. The device uses a single inductor and a minimum number of passive components. The typical output voltage that can be applied to the EL lamp is ± ...

Page 2

... Ordering Information Package Options 8-Lead SOIC Device 4.90x3.90mm body 1.75mm height (max) 1.27mm pitch HV825 HV825LG-G -G indicates package is RoHS compliant (‘Green’) Absolute Maximum Ratings Parameter Supply voltage Operating Temperature Range Storage Temperature Range MSOP-8 Power Dissipation SO-8 Power Dissipation Absolute Maximum Ratings are those values beyond which damage to the device may occur ...

Page 3

Test Circuit Enable OFF = GND 560µ 1. 0.1µF For additional information, see Application Notes AN-H33 and AN-H34. Typical Performance Lamp Size V IN 1.5in 1.5V 2 Notes: ...

Page 4

... Dimension NOM - - (mm) MAX 1.75 0.25 JEDEC Registration MS-012, Variation AA, Issue E, Sept. 2005. * This dimension is not specified in the original JEDEC drawing. The value listed is for reference only. Drawings are not to scale. Supertex Doc. #: DSPD-8SOLGTG, Version H101708 Note 1 h Seating Plane ...

Page 5

... Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship ...

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