HV857L(2013) データシートの表示（PDF） - Supertex Inc
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HV857L Datasheet PDF : 8 Pages
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HV857L
Electrical Characteristics
DC Characteristics (Over recommended operating conditions unless otherwise specified, TA = 25°C)
Sym Parameter
Min Typ Max Units Conditions
RDS(ON) On-resistance of switching transistor
-
-
6.0 Ω I = 100mA
VCS
Max. output regulation voltage
85
95 105
V VDD = 1.8 to 5.0V
VA – VB Peak to peak output voltage
170 190 210
V VDD = 1.8 to 5.0V
IDDQ
Quiescent VDD supply current
-
-
150
nA RSW-Osc = Low
IDD
Input current going into the VDD pin
-
-
150 µA VDD = 1.8 to 5.0V. See Fig. 1
IIN
Input current including inductor current
-
25 40 mA See Fig. 1*
VCS
Output voltage on VCS
-
92
-
V See Fig. 1
fEL
EL lamp frequency
175 205 235 Hz See Fig. 1
fSW
Switching transistor frequency
65 77 89 kHz See Fig. 1
D
Switching transistor duty cycle
-
88
-
% See Fig. 1
* The inductor used is a 220µH Murata inductor, max DC resistance of 8.4Ω, part # LQH32CN221K21.
Enable/Disable Function Table
Sym Parameter
EN-L Logic input low voltage
EN-H Logic input high voltage
Min
Typ
0
-
VDD - 0.2
-
Max
0.2
VDD
Units
V
V
Conditions
VDD = 1.8 to 5.0V
VDD = 1.8 to 5.0V
Block Diagram
VDD
RSW-Osc
Switch
Osc
LX
CS
Q
GND
VA
+
VSENSE
Disable
C
_
VREF
Q
High
Voltage
Level
VDD
Translator
REL-Osc
EL
Osc
Q
VB
Q
Doc.# DSFP-HV857L
A062013
Supertex inc.
3
www.supertex.com
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