TNY256 Ver la hoja de datos (PDF) - Power Integrations, Inc

Número de pieza

componentes Descripción

Fabricante

TNY256

Energy Efficient/ Low Power Off-line Switcher

Power Integrations, Inc 

TNY256

Parameter

Conditions

Symbol SOURCE = 0 V; Tj = -40 to 125 °C Min Typ Max Units

See Figure 14

(Unless Otherwise Specified)

OUTPUT (cont.)

DRAIN Supply

Voltage

Output EN/UV

Delay

tEN/UV

See Note 8

50

V

10

µs

Output Disable

Setup Time

tDST

0.5

µs

Auto-Restart,

t

ON-Time

AR

Auto-Restart

Duty Cycle

DCAR

Tj = 25 °C

See Note 10

28.9 32.0 35.2

ms

16

20

24

%

NOTES:

1. For a threshold with a negative value, negative hysteresis is a decrease in magnitude of the corresponding threshold.

2. Total current consumption is the sum of I and I when EN/UV pin is shorted to ground (MOSFET not switching)

S1

DSS

and the sum of IS2 and IDSS when EN/UV pin is open (MOSFET switching).

3. Since the output MOSFET is switching, it is difficult to isolate the switching current from the supply current at the

DRAIN. An alternative is to measure the BYPASS pin current at 6.2 V.

4. BYPASS pin is not intended for sourcing supply current to external circuitry.

5. See typical performance characteristics section for BYPASS pin start-up charging waveform.

6. For current limit at other di/dt values, refer to current limit vs. di/dt curve under typical performance

characteristics.

7. This parameter is derived from characterization.

8. This parameter is derived from the change in current limit measured at 5X and 10X of the di/dt shown in the ILIMIT

specification.

9. Auto-restart on time has the same temperature characteristics as the oscillator (inversely proportional to

frequency).

11 B

8/99

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