HV858 datasheet(6/7 Pages) SUTEX

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A011706

*Any 100V fast reverse recovery diode can be used

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.

Com

EL2

LX = 68µH **

CS = 3.3nF, 100V

VIN

D = IN914*

VDD

EL1

EL3

EL Lamp 3

(1.0 in2)

HV858

CIN = 4.7µF

Stream of

Serial Data

(1's and 0's)

CDD =

0.1µF

VDD

GND

SDI

SCK

EL Lamp 2

(1.0 in2)

EL Lamp 1

(1.0 in2)

Typical Performance (V

DD = VIN = 3.0V)

EL1 Brightness

st 9-bit SDI code

Level

ft-lm

Cd/m

IDD (mA)

VCS

(V)

000111111

0/7

42.6

85.7

001111111

1/7

1.60

5.46

44.7

85.3

010111111

2/7

3.24

11.08

46.9

84.9

011111111

3/7

4.95

16.94

48.9

84.5

100111111

4/7

6.68

22.85

51.2

84.0

101111111

5/7

8.44

28.85

53.3

83.5

110111111

6/7

10.21

34.93

55.0

82.9

111111111

7/7

12.05

41.2

56.2

82.5

Figure 1 : Test Circuit

HV858

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