Table of Contents
Advertisement
TDA4601 (IC801)
The integrated circuit TDA4601 or—D is designed for regul—
ating controlling and protecting the switching transistor
installed in the flyback converter power supplies. It also
protects the complete SMPS by preventing an increase in
the secondary voltage in case of errors. In addition to
their use with TV receivers and video recorders, these
ICs can be applied in power supplies of hi-fi sets and
active speakers due to their wide operational ranges and
superior voltage stability during high load change.
1. Features
* Direct control of switching transistor
* Low start-up current
* Reversing linear overload characteristic
* Collector current proportional to base—current input
* Protective circuit in the event of errors.
2. Pin description
Vref output
Zero—passage idenfication
Input regulating ampifer, overload amplfer
Collector—current simulation
Pulse output, driving the switching transistor
oO
aon
DO
&— WD
Power supply
pPrino | function
Possible connection for additional protective circuit
Ground (rigidly connected to substrate mounting plate)
DC voltage output for charging the coupling capacitor
66
Advertisement
Table of Contents
