HV421
Electrical Characteristics
DC Characteristics
Symbol
R
DS(ON)
I
DDQ
I
DD
I
IN
V
PP
F
RING
D
RING
fsw
Dsw
(V
DD
=5.0V, R
RING
=30MΩ, R
SW
=1.3MΩ, L
X
=330µH, T
A
=25°C)
Parameter
On-resistance of switching transistor
Quiescent V
DD
supply current
Input current going into the V
DD
pin
Input current including inductor current
Output voltage on V
PP
Ring frequency
Ringing frequency duty cycle
Switching transistor frequency
Switching transistor duty cycle
65
20
170
68
25
50
35
88
30
Min
Typ
3.5
Max
5
50
300
220
Units
Ω
nA
µA
mA
V
Hz
%
KHz
%
V
IN
=5.0V. See Figure 1.
I=100mA
R
SW
=Low
V
IN
=5.0V. See Figure 1.
V
IN
=5.0V. See Figure 1.
V
IN
=5.0V. See Figure 1.
V
IN
=5.0V. See Figure 1.
Conditions
Recommended Operating Conditions
Symbol
V
DD
T
A
Supply voltage
Operating temperature
Parameter
Min
4.75
0
Typ
Max
9.5
85
Units
V
°C
Conditions
ETE –
SOL
Enable/Disable Table
– OB
Symbol
EN-L
EN-H
Parameter
Min
0
V
DD
-0.5
Typ
Max
0.5
V
DD
Units
V
V
Logic input low voltage
Logic input high voltage
Conditions
11-2
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