The TEA2019 is a 14-pin DIP low cost integrated circuit designed for the control of switch mode Power Supplies. It features current mode regulation which facilitates design with high stability and automatic pulse-by-pulse current limitation.
Key characteristics include positive and negative output currents up to 0.5A, transformer demagnetization sensing, and full overload and short-circuit protection. The device is particularly suitable for applications where oscillator synchronization is required due to its internal PLL capability.
| Package Type | 14-pin DIP |
|---|---|
| Maximum Duty Cycle | 80 % |
| Internal Reference Voltage | 2.4 V (Typ) |
The TEA2019 has synchronization capability by internal PLL, whereas the TEA2018A does not.
Typical applications include Video Display Units, TV sets, typewriters, micro-computers and industrial applications.
The period Tosc is given by the formula: Tosc = 0.69 Ct (Ri + 2000).