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TDA4605_03 Datasheet, PDF (4/7 Pages) STMicroelectronics – CONTROL CIRCUIT FOR SWITCH MODE POWER SUPPLIES USING MOS TRANSISTORS
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TDA4605
ELECTRICAL CHARACTERISTICS (VCC = 10V, Tamb = 25oC, unless otherwise specified) - Continued
Symbol
Parameter
Test Conditions
GENERALLY VALID DATA (V6 = 10V)
VOLTAGE OF THE ZERO Transition DETECTOR
V8P
Positive Clamping Voltage
V8N
Negative Clamping Voltage
V8S
Threshold Value
TUL Suppression of Transformer Ringing
I8 = 1mA
I8 = -1mA
-I8
Input Current
PUSH-PULL OUTPUT STAGE
SATURATION VOLTAGES
V8 = 0
VSatU Pin 5 Sourcing
VSatU Pin 5 Sinking
VSatU Pin 5 Sinking
OUTPUT SLOW RATE
I5 = -0.1A
I5 = 0.1A
I5 = 0.5A
dV5/dt Rising Edge
-dV5/dt Falling Edge
REDUCTION OF CONTROL VOLTAGE
-I1
Current to reduce the Control Voltage
PROTECTION CIRCUIT
V7 = 1V
V6(Min.)
V6(Max.)
V3A
Oj
V3Sat
I6
Undervoltage Protection for V6 :
Voltage at Pin 5 = V5(Min.) if V6 < V6(Min.)
Overvoltage Protection for V6 :
Voltage at Pin 5 = V5(Min.) if V6 > V6(Max.)
Undervoltage Protection for VAC :
Voltage at Pin 5 = V5(Min.) if V3 < V3A
V2 = 0V
Over Temperature : at the given chip temperature the
IC will switch V5 to V5(Min.)
Voltage at Pin 3 if one of the protection functions was
triggered ; (V3 will be clamped until V6 < V6A)
I3 = 750µA
Current Drain during Burst Operation
V3 = V2 = 0V
Min. Typ. Max. Unit
0.75
V
-0.2
V
40 50
mV
3 3.8 4.5 µs
0
4 µV
1.5 2.0 V
1.0 1.2 V
1.4 1.8 V
70
V/µs
100
V/µs
50
µA
7.0 7.25 7.5 V
15 16 16.5 V
970 1005 1040 mV
150
oC
0.4 0.8 V
8
mA
4/7
1
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