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HV421 Datasheet(PDF) 2 Page - Supertex, Inc

Part # HV421
Description  High Voltage 1 REN Ring Generator
PDF  5 Pages
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV421 Datasheet(HTML) 2 Page - Supertex, Inc

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background image
11-2
Symbol
Parameter
Min
Typ
Max
Units
Conditions
RDS(ON)
On-resistance of switching transistor
3.5
5
Ω
I=100mA
I
DDQ
Quiescent V
DD supply current
50
nA
R
SW=Low
IDD
Input current going into the VDD pin
300
µAVIN=5.0V. See Figure 1.
IIN
Input current including inductor current
170
220
mA
VIN=5.0V. See Figure 1.
V
PP
Output voltage on V
PP
65
68
V
V
IN=5.0V. See Figure 1.
FRING
Ring frequency
20
25
30
Hz
VIN=5.0V. See Figure 1.
DRING
Ringing frequency duty cycle
50
%
fsw
Switching transistor frequency
35
KHz
V
IN=5.0V. See Figure 1.
Dsw
Switching transistor duty cycle
88
%
Electrical Characteristics
DC Characteristics (V
DD=5.0V, RRING=30MΩ, RSW=1.3MΩ, LX=330µH, TA=25°C)
Symbol
Parameter
Min
Typ
Max
Units
Conditions
V
DD
Supply voltage
4.75
9.5
V
TA
Operating temperature
0
85
°C
Recommended Operating Conditions
Symbol
Parameter
Min
Typ
Max
Units
Conditions
EN-L
Logic input low voltage
0
0.5
V
EN-H
Logic input high voltage
VDD-0.5
VDD
V
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HV421
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