Control IC for Single-Ended and Push-Pull
Switched-Mode Power Supplies (SMPS)
q Feed-forward control (line hum suppression)
q Symmetry inputs for push-pull converter
q Push-pull outputs
q Dynamic output current limitation
q Overvoltage protection
q Undervoltage protection
q Soft start
q Double pulse suppression
Type Ordering Code Package Temp.-Range
TDA 4700 A Q67000-Y594 P-DIP-24-1 – 0 to 70 °C
s TDA 4718 A Q67000-Y639 P-DIP-18-1 – 0 to 70 °C
s Not for new design
These versatile SMPS control ICs comprise digital and
analog functions which are required to design high-
quality flyback, single-ended and push-pull converters
in normal, half-bridge and full-bridge configurations.
The component can also be used in single-ended
voltage multipliers and speed-controlled motors.
Malfunctions in electrical operation are recognized by
the integrated operational amplifiers, which activate
1) Is now available for temperature range – 25 to 85 °C.