Rev. Q 06/23

15

LinkSwitch-TN2

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NOTES:

A. Total current consumption is the sum of I

S1 and IDSS when FEEDBACK pin voltage is = 2.1 V (MOSFET not switching) and the sum of IS2 and

I

DSS 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 5.1 V.

C. This current is only intended to supply an optional optocoupler connected between the BYPASS and FEEDBACK pins and not any other

external circuitry.

D. For current limit at other di/dt values, refer to Figures 21 and 22.

E. This parameter is guaranteed by design.

F. This parameter is derived from characterization.

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

H. The BP/M capacitor value tolerance should be equal or better than indicated below across the ambient temperature range of the target

application.

I. Measured using circuit in Figure 12 with 50 Ω drain pull-up. The width of the drain pulse is measured as the time from V

FALL = 42 V to

V

RISE = 40 V (VDR = 50 V), for LNK32x6/x5/x4 and as the time from VFALL = 32 V to VRISE = 30 V on rising edge (VDR = 35 V), for LNK3202.

Nominal BP/M Pin

Capacitor Value

Tolerance Relative to

Minimal Capacitor Value

Min

Max

0.1 μF

-60%

+100%

1 μF

-50%

+100%

Parameter

Symbol

Conditions

SOURCE = 0 V; T

J = -40 to 125 °C

See Figure 10

(Unless Otherwise Specified)

Min

Typ

Max

Units

Output (cont.)

OFF-State Drain

Leakage Current

I

DSS1

V

BP = 5.4 V

V

FB ≥2.1 V

V

DS = 80% BVDSS

T

J = 125 °C

200

μ

A

I

DSS2

V

BPP = 5.4 V

V

DSS = 325 V

T

J = 25 °C

15

Breakdown Voltage

BV

DSS

V

BP = 5.4 V

V

FB ≥2.1 V

T

J = 25 °C

LNK320X

725

V

LNK329X

900

DRAIN Pin

Supply Voltage

T

J = 25 °C

LNK3202 to LNK3207

18

V

LNK3208 to LNK3209

LNK3294, LNK3296

25

Auto-Restart

ON-Time

t

AR(ON)

T

J = 25 °C

See Note G

50

ms

Auto-Restart

OFF-Time

t

AR(OFF)

T

J = 25 °C

See Note G

First Off Period

150

ms

Subsequent Periods

1500

Auto-Restart

Duty Cycle

DC

AR

Subsequent Periods

3

%