TDA8174A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
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TDA8174A Datasheet PDF : 5 Pages
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TDA8174A - TDA8174AW
BLOCK DIAGRAM
10
TDA8174A
5
VOLTAGE
REGULATOR
2
FLYBACK
GENERATOR
11
R3
TRIG-IN
3
RAMP
CLOCK POWER
GENERATOR
PULSE AMP.
1
BUFFER
STAGE
THERMAL
PROTECTION
4
7
8
9
6
ABSOLUTE MAXIMUM RATINGS
Symbol
VS
V1, V2
V3
V9
I0
I0
I1 1
I1 1
Ptot
Tstg
Tj
Tamb
Parameter
Supply Voltage
Flyback Peak Voltage
Trigger Input Voltage
Amplifier Input Voltage
Output Peak-to-peak Current (non repetitive t = 2ms)
Output Peak-to-peak Current t > 10µs
Pin 11 DC Current at V1 < V10
Pin 11 Peak-to-peak Current @ tfly < 1.5ms
Total Power Dissipation @ Ttab = 60°C
Storage Temperature
Junction Temperature
Ambient Temperature
Value
Unit
35
V
65
V
20
V
GND, VS
V
6
A
4
A
100
mA
3
A
30
W
– 40, +150
°C
0, +150
°C
0, +70
°C
THERMAL DATA
Symbol
Rth (j-tab)
Rth(j-a)
Parameter
Thermal Resistance Junction-tab
Thermal Resistance Junction-ambient
Max.
Max.
Value
3
40
Unit
°C/W
°C/W
DC ELECTRICAL CHARACTERISTICS (VS = 35V ; Tamb = 25oC unless otherwise specified)
Symbol
I2
I10
–I7
–I7
dI7/I7
V1
Parameter
Pin 2 Quiescent Current
Pin 10 Quiescent Current
Ramp Generator Bias Current
Ramp Generator Current
Ramp Generator Linearity
Quiescent Output Voltage
V1L Out Saturation Voltage to GND
V1H Out Saturation Voltage to Vs
Test Conditions
I1 = 0, I11 = 0
I1 = 0, I11 = 0
V7 = 0
V7 = 0, –I4 = 20µA
V6 = 0 to 15V, –I4 = 20µA
Ra = 30kΩ, Rb = 10kΩ, Vs = 35V
Ra = 6.8kΩ, Rb = 10kΩ, Vs = 15V
I1 = 0.5A
I1 = 1.2A
–I1 = 0.5A
–I1 = 1.2A
Min. Typ. Max. Unit
16 36 mA
15 30 mA
0.5 µA
18.5 20 21.5 µA
0.2 1
%
17.0 17.8 18.6 V
7.2 7.5 7.8
V
0.5 1
V
1 1.4
V
1.1 1.6
V
1.6 2.2
V
2/5
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