TDA4700 Datasheet, PDF (15/21 Pages) Siemens Semiconductor Group – Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS

TDA 4700
TDA 4718
Characteristics (cont’d)
V_S = 11 to 30 V; T_A = – 25 to 85 °C
Parameter
Symbol
Limit Values
min.
typ. max.
Unit Test
Condition
Symmetry (TDA 4700; TDA 4700 A)
Input voltage
Input current
V_{I H}
2.0
V_{I L}
– I_I
Output Stages Q1, Q2
V
0.8
V
2
µA
Output voltage
V_{Q H}
V_{Q L}
Output leakage
current
I_Q
ON, OFF, Undervoltage K6
30
V
1.1
V
I_Q = 20 mA
2
µA V_{Q H} = 30 V
Switching voltage
Input current
Turn-OFF delay time¹⁾
Error detection time¹⁾
V
– I_I
t_{D OFF}
t
V_REF – 0.03
250
50
V_REF + 0.03 V
2
µA
ns
ns
Dynamic Current Limitation K7
Common-mode input
voltage range
V_IC
0
4
V
Input offset voltage V_IO
– 10
10
mV
Input current
– I_I
2
µA
Turn-OFF delay time²⁾ t_{D OFF}
250
ns
Error detection time²⁾ t
50
ns
Overvoltage K5
Switching voltage
Input current
Output current
Turn-OFF delay time¹⁾
Error detection time¹⁾
V
– I_I
– I_Q
t_{D OFF}
t
V_REF – 0.03
0
250
50
V_REF + 0.03 V
2
µA
200
µA
ns
ns
V_{QH min} = 5 V
1) _{At the input: step function ∆V = VREF – 100 mV VREF + 100 mV}
2) _{At the input: step function ∆V = – 100 mV ∆V = + 100 mV}
Semiconductor Group
15