The document introduces the features of TEA2018A, including direct drive of the external switching transistor, positive and negative output currents up to 0.5 A, current limiting, transformer demagnetization sensing, full overload and short circuit protection, proportional base current driving, and low standby current.
The TEA2018A is an 8-pin DIP low-cost integrated circuit designed for the control of switch mode power supplies. It utilizes current mode regulation to facilitate the design of power supplies with high stability, automatic input voltage feed-forward, and automatic pulse-by-pulse current limitation. Typical applications include video display units, TV sets, typewriters, microcomputers, and industrial applications.
The device features direct drive of the external switching transistor, providing positive and negative output currents up to 0.5A. Key safety and operational features include current limitation, transformer demagnetization sensing, full overload and short-circuit protection, proportional base current driving, and thermal protection. The standby current before starting is less than 1.6 mA.
| Package Type | 8-pin DIP |
|---|---|
| Positive Supply Voltage (Max) | 15 V |
| Negative Supply Voltage (Max) | 5 V |
| Peak Output Current | 1 A |
| Operating Ambient Temperature Range | -20, +70 °C |
| Junction Temperature (Max) | +150 °C |
| Current Limitation Threshold Voltage | -1000 mV |
| Maximum Duty Cycle | 70 % |
| Internal Reference Voltage | 2.4 V |
| Operating Frequency | 30 kHz |
Typical applications include Video Display Units, TV sets, typewriters, microcomputers and industrial applications.
The standby current before starting is less than 1.6 mA.
Yes, it includes full overload and short-circuit protection.