Features: ·DIRECT DRIVE OF THE EXTERNAL SWITCHING TRANSISTOR ·POSITIVE AND NEGATIVE OUTPUT CURRENTS UP TO 0.5 A ·CURRENT LIMITATION ·TRANSFORMER DEMAGNETIZATION SENSING ·FULL OVERLOAD AND SHORT-CIRCUIT PROTECTION ·PROPORTIONAL BASE CURRENT DRIVING·LOW STANDBY CURRENT BEFORE STARTING (< 1.6 mA) ...
TEA2018A: Features: ·DIRECT DRIVE OF THE EXTERNAL SWITCHING TRANSISTOR ·POSITIVE AND NEGATIVE OUTPUT CURRENTS UP TO 0.5 A ·CURRENT LIMITATION ·TRANSFORMER DEMAGNETIZATION SENSING ·FULL OVERLOAD AND SHORT-CIRC...
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Symbol |
Parameter |
Value |
Unit |
VCC+ VCC- IO(peak) II Tj Toper Tstg |
Positive Supply Voltage Negative Supply Voltage Peak Output Current (duty cycle < 5%) Input Current (Pin 3) Junction Temperature Operating Ambient Temperature Range Storage Temperature Range |
15 -5 ±1 ±5 +150 -20, +70 -40, +150 |
V V A mA °C °C °C |
The TEA2018Ais an 8-pin DIP low-cost integrated circuit designed for the control of switch mode power supplies.
Due to its current mode regulation, the TEA2018A facilitates design of power supplies with following features :
.High stability regulation loop
.Automatic input voltage feed-forward in discontinuous mode fly-back
.Automatic pulse-by-pulse current limitation Typical applications : VideoDisplay Units, TV sets, typewriters,microcomputersand industrialapplications
Where synchronization is required, use the TEA2019. For more details, see application note AN406/0591