TDA4700 Datasheet, PDF (12/21 Pages) Siemens Semiconductor Group – Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS

TDA 4700
TDA 4718
Operating Range
Parameter
Symbol
Limit Values
min. max.
Unit Test
Condition
Supply voltage
V_S
Ambient temperature
TDA 4700
TDA 4718 T_A
TDA 4700 A
TDA 4718 A T_A
VCO frequency
f
Ramp generator frequency f_RG
10.5
30
V
– 25
85
°C
0
70
°C
40
250 000 Hz
40
250 000 Hz
Characteristics
V_S = 11 to 30 V; T_A = – 25 to 85 °C
Parameter
Symbol
Limit Values
min.
typ. max.
Supply current
I_S
8
20
Reference
Reference voltage
Reference voltage
change
Reference voltage
change
Reference voltage
change
Temperature
coefficient
Response threshold
of I_REF overcurrent
V_REF
∆V_REF
∆V_REF
∆V_REF
TC
I_REF
2.35
2.5 2.65
8
15
15¹⁾
0.25 0.4
10
1) _{At TA = 0 to 70 °C, this value falls to max. 5 mV}
Unit Test
Condition
mA C_T = 1 nF
f_VCO = 100 kHz
V
0 mA < I_REF < 5 mA
mV 14 V ± 20 %
mV 25 V ± 20 %
mV 0 mA < I_REF < 5 mA
mV/K
mA
Semiconductor Group
12