LNK353 Ver la hoja de datos (PDF) - Power Integrations, Inc

Número de pieza

componentes Descripción

Fabricante

LNK353

Enhanced, Energy Efficient, Low Power Off-Line Switcher IC®

Power Integrations, Inc 

LNK353/354

Conditions

Parameter

Symbol

SOURCE = 0 V; TJ = -40 to 125 °C

See Figure 7

(Unless Otherwise Specified)

Min Typ Max Units

OUTPUT (cont)

DRAIN Supply

Voltage

50

V

Output Enable

Delay

tEN

See Figure 9

10

µs

Output Disable

Setup Time

tDST

0.5

µs

Auto-Restart

ON-Time

tAR

TJ = 25 °C

See Note H

31

ms

Auto-Restart Duty

Cycle

DCAR

5

%

NOTES:

A. Total current consumption is the sum of IS1 and IDSS when FEEDBACK pin voltage is ≥2 V (MOSFET not

switching) and the sum of IS2 and IDSS when FEEDBACK pin is shorted to SOURCE (MOSFET switching).

B 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 V.

C. See Typical Performance Characteristics section Figure 14 for BYPASS pin start-up charging waveform.

D. This current is only intended to supply an optional optocoupler connected between the BYPASS and FEEDBACK

pins and not any other external circuitry.

E. For current limit at other di/dt values, refer to Figure 13.

F. This parameter is guaranteed by design.

G. This parameter is derived from characterization.

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

frequency).

F

2/05

9

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