The TDA 4601 is a control IC designed for switched-mode power supplies. It is used for driving, controlling and protecting the switching transistor in self-oscillating flyback converter power supplies as well as for protecting the overall power supply unit. In case of disturbance, the rise of the secondary voltage is prevented.
The Siemens TDA 4601 is a bipolar integrated circuit designed to drive, control, and protect switching transistors in self-oscillating flyback converter power supplies. It provides direct control of the transistor with features such as low start-up current, reversing linear overload characteristics, and base current drive proportional to collector current.
The document details the IC's operation during start-up, normal mode, and protective modes against disturbances or short-circuits. Key specifications include a supply voltage range of 78 V to 18 V (typical operating), a reference voltage of approximately 4 V, and a maximum junction temperature of 125 °C.
| Supply Voltage (Operating) | 78 V to 18 V |
|---|---|
| Reference Voltage Typ | 4.0 V to 4.2 V |
| Control Voltage (Typ) | 2.3 V to 2.6 V |
The operating supply voltage ranges from a minimum of 78 V to a maximum of 18 V.
The absolute maximum supply voltage is 20 V.
The typical reference voltage is 4.2 V.
The maximum junction temperature is 125 °C.