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HV861 Datasheet(PDF) 3 Page - Supertex, Inc

Part # HV861
Description  Dimmable, Low Noise, Dual EL Lamp Driver
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV861 Datasheet(HTML) 3 Page - Supertex, Inc

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HV861
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
Sym
Parameter
Min
Typ
Max Units Conditions
Electrical Characteristics (cont.)
V
REFH
V
REF output high voltage
1.12
1.26
1.40
V
V
DD = 2.5V to 4.5V
I
REF(SOURCE)
Average sourcing current from V
REF pin
-
6.0
-
µA
V
DD = 2.5V to 4.5V
I
REF(SINK)
Average sinking current from V
REF pin
-
6.0
-
µA
V
DD = 2.5V to 4.5V
I
DDQ
Quiescent V
DD supply current
-
-
300
nA
V
DD = 2.5V,
EN1 = EN2 = PWM = low
-
-
400
V
DD = 3.0V,
EN1 = EN2 = PWM = low
-
-
500
V
DD = 4.5V,
EN1 = EN2 = PWM = low
I
DD
Input current going into the V
DD pin
-
-
250
µA
V
DD = 2.5V to 4.5V, REL = 2.0MΩ,
R
SW = 825kΩ
I
IN
Input current including inductor current
-
25
50
mA
V
IN = 3.2V (see Test Circuit)
f
EL
EL Lamp frequency
160
190
220
Hz
R
EL = 2.0MΩ
f
SW
Switching transistor frequency
84
100
116
kHz
R
SW = 825kΩ
PWM
Input PWM frequency
10
-
100
kHz
---
D
Switching transistor duty cycle
-
88
-
%
---
V
IH
Enable PWM input logic high voltage
1.5
-
V
DD
V
V
DD = 2.5V to 4.5V
V
IL
Enable PWM input logic low voltage
0
-
0.2
V
V
DD = 2.5V to 4.5V
I
IH
Enable PWM input logic high current
-
-
1.0
µA
V
IH = VDD = 2.5V to 4.5V
I
IL
Enable PWM input logic low current
-
-
-1.0
µA
V
IL = 0V, VDD = 2.5V to 4.5V
C
IN
Enable PWM input capacitance
-
-
15
pF
---
Function Table
EN1
EN2
EL1
EL2
COM1
COM2
IC
0
0
Hi Z
Hi Z
Hi Z
Hi Z
OFF
0
1
Hi Z
ON
Hi Z
ON
ON
1
0
ON
Hi Z
ON
Hi Z
ON
1
1
ON
ON
ON
ON
ON
Typical Performance (EL1 lamp size = EL2 lamp size = 3.6in2)
V
DD
(V)
V
IN
(V)
Lamp
I
IN
(mA)
V
CS
(V
PEAK)
f
EL
(Hz)
Lamp Brightness
(cd/m2)
EL1
EL2
3.0
4.0
EL1 ON
16.5
93
188
14.0
-
EL2 ON
16.5
-
14.0
EL1 and EL2 ON
29.8
14.0
14.0


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