Supertex inc.
Supertex inc.
Supertex inc.
www.supertex.com
HV833
Doc.# DSFP-HV833
A061813
Features
►1.8 to 6.5V operating supply voltage
►DC to AC conversion
►Separately adjustable lamp and converter
frequency
►Output voltage regulation
►Enable/disable function
►Patented output timing for high efficiency
►<100nA shutdown current
►Split supply capability
►LCD backlighting
Applications
►Portable transceivers
►Remote control units
►Calculators
►PDAs
►Global Positioning Systems (GPS)
General Description
The Supertex HV833 is a high voltage driver designed for driving EL
lamps of up to 35nF (10-12in2). The input supply voltage range is from
1.8 to 6.5V. The device uses a single inductor and a minimum number
of passive components. The nominal regulated output voltage that is
applied to the EL lamp is ±90V. The chip can be enabled/disabled by
connecting a resistor between the RSW-Osc pin and the VDD/GND
pins.
The HV833 has two internal oscillators, a switching MOSFET, and a
high voltage EL lamp driver. The frequency for the switching MOSFET
is set by an external resistor connected between the RSW-Osc pin
and the VDD supply pin. The EL lamp driver frequency is set by an
external resistor connected between the REL-Osc pin and the VDD
pin. An external inductor is connected between the LX pin and VDD
or VIN pin. A 0.003-0.1µF 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 MOSFET charges the external inductor and discharges
it into the capacitor at CS. The voltage at CS will start to increase.
Once the voltage at CS reaches a nominal value of 90V, the switching
MOSFET is turned OFF to conserve power. The outputs VA and VB
are configured as an H bridge and are switching in opposite states to
achieve 180V peak-to-peak across the EL lamp.
Typical Application Circuit
High Voltage
EL Lamp Driver
+
_
CS
100V
VIN
LX
1N914
Enable Signal
ON = VDD
OFF = 0
EL Lamp
VDD 1
2
3
4
8
7
6
5
VA
VB
CS
LX
VDD
RSW-Osc
REL-Osc
GND
HV833
H
Typical Thermal Resistance
J
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Tap Markmg
2
Supertex inc.
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Doc.# DSFP-HV833
A061813
HV833
Absolute Maximum Ratings
Parameter Value
Supply voltage VDD -0.5V to 7.5V
Output voltage, VCS -0.5V to 125V
Operating temperature -40°C to +85°C
Storage temperature -65°C to +150°C
Power dissipation 300mW
Sym Parameter Min Typ Max Units Conditions
DC Electrical Characteristics (Over recommended operating conditions unless otherwise specified, TA = 25°C)
Absolute Maximum Ratings are those values beyond which damage to the device may
occur. Functional operation under these conditions is not implied. Continuous operation
of the device at the absolute rating level may affect device reliability. All voltages are
referenced to device ground.
Pin Configuration
RDS(ON) On-resistance of switching transistor - - 4.0 ΩI = 100mA
VCS Max. output regulation voltage 80 90 100 V VDD = 1.8 to 6.5V
VA-B Max differential output voltage across lamp 160 180 200 V VDD = 1.8 to 6.5V
IDDQ Quiescent VDD supply current - - 100 nA RSW-Osc = Low
IDD Input current going into the VDD pin - - 150 µA VDD = 1.8 to 6.5V. See Fig. 1
IIN Input current including inductor current - 56 64 mA VIN = 3.3V. See Fig. 1.
VCS Output voltage on VCS 63 72 81 V VIN = 3.3V. See Fig. 1.
fEL VDIFF output drive frequency 240 270 300 Hz VIN = 3.3V. See Fig. 1.
FSW Switching transistor frequency 55 65 75 kHz VIN = 3.3V. See Fig. 1.
D Switching transistor duty cycle - 88 - % See Fig. 1.
VDD Supply voltage 1.8 - 6.5 V ---
fEL VA-B output drive frequency 60 - 1000 Hz ---
TAOperating temperature -25 - +85 °C ---
Recommended Operating Conditions
Sym Parameter Min Typ Max Units Conditions
8
7
6
5
VA
VB
CS
LX
VDD
RSW-Osc
REL-Osc
GND
1
2
3
4
Product Marking
L = Lot Number
YY = Year Sealed
WW = Week Sealed
= “Green” Packaging
H833
LLLL
YYWW
Top Marking
Bottom Marking
8-Lead MSOP
8-Lead MSOP
(top view)
Package may or may not include the following marks: Si or
Ordering Information
Part Number Package Packing
HV833MG-G 8-Lead MSOP 2500/Reel
Typical Thermal Resistance
Package θja
8-Lead MSOP 216OC/W
-G denotes a lead (Pb)-free / RoHS compliant package
3
Supertex inc.
www.supertex.com
Doc.# DSFP-HV833
A061813
HV833
Functional Block Diagram
C
+
_
Disable
GND
VDD
VA
CS
LX
VB
RSW-Osc
REL-Osc
Switch
Osc
VREF
Output
Osc
Q
Q
Q
Q
VSEN
Enable/Disable Function Table
Sym Parameter Min Typ Max Units Conditions
EN-L Logic input low voltage 0 - 0.5 V VDD = 1.8 to 6.5V
EN-H Logic input high voltage VDD - 0.5 - VDD V VDD = 1.8 to 6.5V
AiiL
| . V , Brigh‘nsss vs.lnduc1orValus
Engmness
Vw (V) VN (V)
4
Supertex inc.
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Doc.# DSFP-HV833
A061813
HV833
Typical Performance Curves for Fig. 1 (EL Lamp = 10.0in2, VIN = VDD)
VCS vs. VIN
90
80
70
60
50
40
1.0 2.0 3.0 4.0 5.0 6.0 7.0
VIN (V)
IIN vs. VIN
60
50
40
30
20
VIN (V)
Brightness vs. VIN
6
5
4
3
2
1
0
VIN (V)
IIN vs. VCS
30 40 50 60 70 80
VCS (V)
VCS (V)
IIN(mA)
Brightness (ft-lm)
IIN (mA)
1.0 2.0 3.0 4.0 5.0 6.0 7.0
1.0 2.0 3.0 4.0 5.0 6.0 7.0
60
50
40
30
20
I
IN
, V
CS
, Brightness vs. Inductor Value
80
70
60
50
40
30
20
10
0
100 200 300 400 500 600 700 800 900 1000
Inductor Value (H)
8
7
6
5
4
3
2
1
0
IIN
Brightness
VCS
Brightness (ft-lm)
IIN (mA), VCS (V)
Device Lamp Size VIN IIN VCS fEL Brightness TA
HV833MG 10in23.3V 56mA 72V 270Hz 5.0ft-Im -25OC to + 85OC
Typical Performance
Fig. 1: Typical Application/Test Circuit
Equivalent to
10in2 lamp
680Ω
29nF
+
_
0.01µF
100V
VIN LX*
220µH
1N914
4.7µF
1.0M
Enable Signal
ON = VDD
OFF = 0
VDD = VIN = 3.3V
1.65M
*LX = 220µH Murata LQH43MN221K01
VDD 1
2
3
4
8
7
6
5
VA
VB
CS
LX
VDD
RSW-Osc
REL-Osc
GND
HV833
j—_I_
j—_l_
Aifl
W
| . V s, Brightness vs. Inductor Value
les.V
5
Supertex inc.
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Doc.# DSFP-HV833
A061813
HV833
Device Lamp Size VIN IIN VCS fEL Brightness TA
HV833MG 6.0in25.0V 30mA 70V 440Hz 6.0ft-Im -25OC to + 85OC
Typical Performance
Fig. 2: Typical Application
+
_ 0.01µF
100V
VIN LX*
560µH
1N914
4.7µF
750k
Enable Signal
ON = VDD
OFF = 0
EL Lamp
6.0in2
VDD = 3.0V, VIN = 5.0V
1.0M
*LX = 560µH Murata LQH43MN561K01
VDD 1
2
3
4
8
7
6
5
VA
VB
CS
LX
VDD
RSW-Osc
REL-Osc
GND
HV833
Typical Performance Curves for Fig. 2 (EL Lamp = 6.0in2, VDD = 3.0, VIN = 5.0V)
I
IN
, V
CS
, Brightness vs. Inductor Value
90
80
70
60
50
40
30
20
10
0100 200 300 400 500 600 700 800 900 1000
Inductor Value (H)
10
9
8
7
6
5
4
3
2
1
IIN
VCS
Brightness
Brightness (ft-lm)
IIN (mA), VCS (V)
VCS vs. VIN
90
80
70
60
50
40
30
1.0 2.0 3.0 4.0 5.0 6.0 7.0
VIN (V)
I
IN
vs. V
IN
25
20
15
10
5
VIN (V)
Brightness vs. VIN
10
8
6
4
2
0
VIN (V)
IIN vs. VCS
30 40 50 60 70 80 90
VCS (V)
VCS (V)
IIN(mA)
Brightness (ft-lm)
IIN (mA)
1.0 2.0 3.0 4.0 5.0 6.0 7.0
35
30
25
20
15
10
1.0 2.0 3.0 4.0 5.0 6.0 7.0
6
Supertex inc.
www.supertex.com
Doc.# DSFP-HV833
A061813
HV833
Device Lamp Size VIN IIN VCS fEL Brightness TA
HV833MG 3.0in23.0V 20mA 60V 440Hz 4.0ft-Im -25OC to + 85OC
Typical Performance
Fig. 3: Typical Application
+
_
0.01µF
100V
VIN = VDD
LX*
560µH
1N914
4.7µF
750k
Enable Signal
ON = VDD
OFF = 0
EL Lamp
3.0in2
VDD = VIN = 3.0V
1
2
3
4
8
7
6
5
1.0M
*LX = 560µH Murata LQH43MN561K01
VA
VB
CS
LX
VDD
RSW-Osc
REL-Osc
GND
HV833
Typical Performance Curves for Fig. 3 (EL Lamp = 3.0in2, VIN = VDD)
V
CS
vs. V
IN
90
80
70
60
50
40
30
1.0 2.0 3.0 4.0 5.0 6.0 7.0
VIN (V)
I
IN
vs. V
IN
25
20
15
10
5
VIN (V)
Brightness vs. VIN
10
8
6
4
2
0
VIN (V)
IIN vs. VCS
30 40 50 60 70 80 90
VCS (V)
VCS (V)
IIN(mA)
Brightness (ft-lm)
IIN (mA)
1.0 2.0 3.0 4.0 5.0 6.0 7.0
25
20
15
10
5
1.0 2.0 3.0 4.0 5.0 6.0 7.0
IIN, VCS, Brightness vs. Inductor Value
90
80
70
60
50
40
30
20
10
0
100 200 300 400 500 600 700 800 900 1000
Inductor Value (H)
10
9
8
7
6
5
4
3
2
1
IIN
VCS
Brightness
Brightness (ft-lm)
IIN (mA), VCS (V)
External Component Description
7
Supertex inc.
www.supertex.com
Doc.# DSFP-HV833
A061813
HV833
External Component Description
External
Component Selection Guide Line
Diode Fast reverse recovery diode, 100V 1N4148 or equivalent.
CS
Capacitor 0.003µF to 0.1µF, 100V capacitor to GND is used to store the energy transferred from the inductor.
REL-Osc
The EL lamp frequency is controlled via an external REL resistor connected between REL-Osc and VDD
pins of the device. The lamp frequency increases as REL decreases. As the EL lamp frequency increases,
the amount of current drawn from the battery will increase and the output voltage VCS will decrease. The
color of the EL lamp is dependent upon its frequency.
RSW-Osc
The switching frequency of the converter is controlled via an external resistor, RSW between the RSW-Osc
and VDD pins of the device. The switching frequency increases as RSW decreases. With a given inductor,
as the switching frequency increases, the amount of current drawn from the battery will decrease and the
output voltage, VCS, will also decrease.
LX
Inductor
The inductor LX is used to boost the low input voltage by inductive flyback. When the internal switch is
on, the inductor is being charged. When the internal switch is off, the charge stored in the inductor will
be transferred to the high voltage capacitor CS. The energy stored in the capacitor is connected to the
internal H-bridge, and therefore to the EL lamp. In general, smaller value inductors, which can handle
more current, are more suitable to drive larger size lamps. As the inductor value decreases, the switching
frequency of the inductor (controlled by RSW) should be increased to avoid saturation.
A 220µH Murata (LQH43MN221) inductor with 5.4Ω series DC resistance is typically recommended.
For inductors with the same inductance value but with lower series DC resistance, a lower RSW value is
needed to prevent high current draw and inductor saturation.
Lamp
As the EL lamp size increases, more current will be drawn from the battery to maintain high voltage
across the EL lamp. The input power, (VIN x IIN), will also increase. If the input power is greater than the
power dissipation of the package (300mW), an external resistor in series with one side of the lamp is
recommended to help reduce the package power dissipation.
Split Supply Configuration for Battery Voltages of Higher than 6.5V
Enable/Disable Configuration
The HV833 can be easily enabled and disabled via a logic
control signal on the RSW and REL resistors as shown in the
Typical Application Circuit on the front page. The control sig-
nal can be from a microprocessor. RSW and REL are typically
very high values. Therefore, only 10’s of microamperes will
be drawn from the logic signal when it is at a logic high (en-
able) state. When the microprocessor signal is high the de-
vice is enabled and when the signal is low, it is disabled.
The Typical Application Circuit on the first page can also be
used with high battery voltages such as 12V as long as the
input voltage, VDD, to the HV833 device is within its specifi-
cations of 1.8V to 6.5V. Split supply configuration is shown
on Fig. 2.
Enable/Disable Table
Enable Signal HV833
VDD Enable
0V Disable
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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. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and
specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com)
©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
8
HV833
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline
information go to http://www.supertex.com/packaging.html.)
Doc.# DSFP-HV833
A061813
8-Lead MSOP Package Outline (MG)
3.00x3.00mm body, 1.10mm height (max), 0.65mm pitch
View B
View A-A
Seating
Plane
Gauge
Plane
L
L1
L2
View B
θ1
θ
1
8
EE1
D
eb
AA2
A1
Seating
Plane
A
A
Top View
Side View
Note 1
(Index Area
D/2 x E1/2)
Symbol A A1 A2 b D E E1 e L L1 L2 θ θ1
Dimension
(mm)
MIN 0.75* 0.00 0.75 0.22 2.80* 4.65* 2.80*
0.65
BSC
0.40
0.95
REF
0.25
BSC
0O5O
NOM - - 0.85 - 3.00 4.90 3.00 0.60 - -
MAX 1.10 0.15 0.95 0.38 3.20* 5.15* 3.20* 0.80 8O15O
JEDEC Registration MO-187, Variation AA, Issue E, Dec. 2004.
* This dimension is not specified in the JEDEC drawing.
Drawings are not to scale.
Supertex Doc. #: DSPD-8MSOPMG, Version H041309.
Note:
1. A Pin 1 identifier must be located in the index area indicated. The Pin 1 identifier can be: a molded mark/identifier; an embedded metal marker; or
a printed indicator.