STMicroelectronics Confidential
3/14
STV8172A
Electrical Characteristics
3
Electrical Characteristics
(V
S
= 34 V, T
AMB
= 25°C, unless otherwise specified)
8. In normal applications, the peak flyback voltage is slightly greater than 2 x (V
S
- V
4
). Therefore, (V
S
- V
4
) = 35 V is not allowed without special circuitry.
9. Refer to
, Stand-by condition.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Fig.
Supply
V
S
Operating Supply Voltage Range (V
2
-V
4
)
10
35
V
I
2
Pin 2 Quiescent Current
I
3
= 0, I
5
= 0
5
20
mA
1
I
6
Pin 6 Quiescent Current
I
3
= 0, I
5
= 0, V
6
=35v
8
19
50
mA
1
Input
I
1
Input Bias Current
V
1
= 1 V, V
7
= 2.2 V
- 0.6
-1.5
µ
A
1
I
7
Input Bias Current
V
1
= 2.2 V, V
7
= 1 V
- 0.6
-1.5
µ
A
V
IR
Operating Input Voltage Range
0
V
S
- 2
V
V
I0
Offset Voltage
2
mV
D
V
I0
/dt
Offset Drift versus Temperature
10
µ
V/°C
Output
I
0
Operating Peak Output Current
0
o
<Tcase<125
o
C
±
1.5
A
V
5L
Output Saturation Voltage to pin 4
I
5
= 1.5 A
1
1.7
V
3
V
5H
Output Saturation Voltage to pin 6
I
5
= -1.5 A
1.8
2.3
V
2
Stand-by
V
5STBY
Output Voltage in Stand-by
V
1
= V
7
= V
S
= 0
See
V
S
- 2
V
Miscellaneous
G
Voltage Gain
80
dB
V
D5-6
Diode Forward Voltage Between pins 5-6
I
5
= 1.5 A
1.8
2.3
V
V
D3-2
Diode Forward Voltage between pins 3-2
I
3
= 1.5 A
1.6
2.2
V
V
3SL
Saturation Voltage on pin 3
I
3
= 20 mA
0.4
1
V
3
V
3SH
Saturation Voltage to pin 2 (2nd part of flyback)
I
3
= -1.5 A
2.1
2.8
V
