Datasheet

LNK362-364
C
12/05
10
Parameter Symbol
Conditions
SOURCE = 0 V; T
J
= -40 to 125 °C
See Figure 7
(Unless Otherwise Specifi ed)
Min Typ Max Units
OUTPUT (cont)
Breakdown
Voltage
BV
DSS
V
BP
= 6.2 V, V
FB
2 V,
See Note H, T
J
= 25 °C
700 V
DRAIN Supply
Voltage
50 V
Output Enable
Delay
t
EN
See Figure 9 10 µs
Output Disable
Setup Time
t
DST
0.5 µs
Auto-Restart
ON-Time
t
AR
T
J
= 25 °C
See Note I
LNK362 40
ms
LNK363-364 45
Auto-Restart Duty
Cycle
DC
AR
5%
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 diffi cult 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. Breakdown voltage may be checked against minimum BV
DSS
specifi cation by ramping the DRAIN pin voltage up
to but not exceeding minimum BV
DSS
.
I. Auto-restart on time has the same temperature characteristics as the oscillator (inversely proportional to
frequency).