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HV856 Datasheet(PDF) 6 Page - Supertex, Inc

Part # HV856
Description  High Voltage Tri-EL Lamp Driver IC
PDF  7 Pages
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV856 Datasheet(HTML) 6 Page - Supertex, Inc

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6
*Murata Inductor - LQH32CN680
Note: Maximum lamp size for each segment is 1.0 in2. To drive larger size lamps, any combination of EL1, EL2 and EL3 can be paralleled. However,
the 3-bit serial data input code (for each output) should be such that the paralleled outputs have the same code.
LX = 68μH*
CS
3.3nF,
200V
D = BAS21
C
IN
4.7μF
Stream of
Serial Data
(1's and 0's)
C
DD
0.1μF
+
-
VIN
+
-
VDD
EL Lamp 1 (1.0in2)
7
8
9
10
6
EL Lamp 2 (1.0in2)
EL Lamp 3 (1.0in2)
HV856K7
1
2
3
5
COM
EL2
CS
EL1
EL3
VDD
GND
LX
SDI
SCK
4
Typical Performance (V
DD = 3.0V, VIN = 3.3V)
Test Circuit
HV856
1ST 9-bit SDI Code
EL1 Brightness
I
IN (mA)
V
CS (VPEAK)
Level
ft-lm
cd/m2
000111111
0/7
0
0
48.72
103
001111111
1/7
1.93
6.60
50.21
103
010111111
2/7
4.05
13.85
52.42
103
011111111
3/7
6.15
21.03
54.03
103
100111111
4/7
8.20
28.04
55.45
103
101111111
5/7
10.13
34.64
56.63
103
110111111
6/7
12.30
42.07
58.41
103
111111111
7/7
14.80
50.62
60.40
103
HV856 Pinout
Pin
Name
Description
1
LX
Inductor pin
2
GND
Ground pin
3
VDD
Input voltage supply pin. (It is common practice to use a bypass capacitor as close as
possible to the device on this pin)
4
SDI
Serial data input pin
5
SCK
Serial clock input pin
6
EL1
EL Lamp 1 pin
7
EL2
EL Lamp 2 pin
8
EL3
EL Lamp 3 pin
9
COM
Common pin for one side of all three EL lamps
10
CS
High voltage capacitor pin



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