Qls 21M62US (CHASSIS: NX56-LA) Service Manual - Electrical Characteristics
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
Figure 4
, Stand-by condition.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Fig.
Supply
V
S
Operating Supply Voltage Range (V
2
-V
4
)
Note 8
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
DV
I0
/dt
Offset Drift versus Temperature
10
μ
V/°C
Output
I
0
Operating Peak Output Current
0
o
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 Note 9 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