Datasheet

Rev. J 06/13
11
LNK302/304-306
www.powerint.com
Parameter Symbol
Conditions
SOURCE = 0 V; T
J
= -40 to 125 °C
See Figure 7
(Unless Otherwise Specified)
Min Typ Max Units
Output
ON-State
Resistance
R
DS(ON)
LNK302
I
D
= 13 mA
T
J
= 25 °C
48 55.2
Ω
T
J
= 100 °C
76 88.4
LNK304
I
D
= 25 mA
T
J
= 25 °C
24 27.6
T
J
= 100 °C
38 44.2
LNK305
I
D
= 35 mA
T
J
= 25 °C
12 13.8
T
J
= 100 °C
19 22.1
LNK306
I
D
= 45 mA
T
J
= 25 °C
7 8.1
T
J
= 100 °C
11 12.9
OFF-State Drain
Leakage Current
I
DSS
V
BP
= 6.2 V, V
FB
≥2 V,
V
DS
= 560 V,
T
J
= 25 °C
LNK302/304 50
mA
LNK305 70
LNK306 90
Breakdown Voltage BV
DSS
V
BP
= 6.2 V, V
FB
≥2 V,
T
J
= 25 °C
700 V
Rise Time
t
R
Measured in a Typical Buck
Converter Application
50 ns
Fall Time
t
F
50 ns
DRAIN Pin
Supply Voltage
50 V
Output Enable Delay t
EN
See Figure 9 10 ms
Output Disable
Setup Time
t
DST
0.5 ms
Auto-Restart
ON-Time
t
AR
T
J
= 25 °C
See Note H
LNK302 Not Applicable
ms
LNK304-306 50
Auto-Restart
Duty Cycle
DC
AR
LNK302 Not Applicable
%
LNK304-306 6
Notes:
A. Total current consumption is the sum of I
S1
and I
DSS
when FEEDBACK pin voltage is ≥2 V (MOSFET not switching) and the sum of
I
S2
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 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).