LNK353/354
ABSOLUTE MAXIMUM RATINGS
(1,5)
DRAIN Voltage .................................................. -0.3 V to 700 V
Peak DRAIN Current......................................400 mA (750 mA)
(2)
FEEDBACK Voltage ................................................ -0.3 V to 9 V
FEEDBACK Current .................................................... 100 mA
BYPASS Voltage...................................................... -0.3 V to 9 V
Storage Temperature .......................................... -65
°C
to 150
°C
Operating Junction Temperature
(3)
..................... -40
°C
to 150
°C
Lead Temperature
(4)
.......................................................... 260
°C
Notes:
1. All voltages referenced to SOURCE, T
A
= 25
°C.
2. The higher peak DRAIN current is allowed while the
DRAIN voltage is less than 400 V.
3. Normally limited by internal circuitry.
4. 1/16 in. from case for 5 seconds.
5. Maximum ratings specified may be applied, one at a time,
without causing permanent damage to the product.
Exposure to Absolute Maximum Rating conditions for
extended periods of time may affect product reliability.
THERMAL IMPEDANCE
Thermal Impedance: P or G Package:
Notes:
(2)
(3)
(θ
JA
) ........................... 70
°C/W
; 60
°C/W
1. Measured on pin 2 (SOURCE) close to plastic interface.
(1)
(θ
JC
) ............................................... 11
°C/W
2. Soldered to 0.36 sq. in. (232 mm
2
), 2 oz. (610 g/m
2
) copper clad.
3. Soldered to 1 sq. in. (645 mm
2
), 2 oz. (610 g/m
2
) copper clad.
Conditions
Parameter
Symbol
SOURCE = 0 V; T
J
= -40 to 125 °C
See Figure 7
(Unless Otherwise Specified)
Average
Peak-Peak Jitter
S2 Open
T
J
= 25 °C
I
FB
= 49
µA
V
FB
≥2 V
(MOSFET Not Switching)
See Note A
FEEDBACK Open
(MOSFET Switching)
See Notes A, B
V
BP
= 0 V, T
J
= 25 °C
See Note C
V
BP
= 4 V, T
J
= 25 °C
See Note C
-5.5
-3.8
5.55
0.8
60
30
1.54
Min
Typ
Max
Units
CONTROL FUNCTIONS
Output Frequency
Maximum Duty
Cycle
FEEDBACK Pin
Turnoff Threshold
Current
FEEDBACK Pin
Voltage
DRAIN Supply
Current
f
OSC
DC
MAX
I
FB
V
FB
I
S1
I
S2
I
CH1
I
CH2
V
BP
V
BPH
T
J
= 25 °C
186
200
16
63
49
1.65
200
280
-3.3
-2.1
5.8
0.95
68
1.76
275
365
-1.8
-1.0
6.10
1.2
214
kHz
%
µA
V
µA
µA
BYPASS Pin
Charge Current
BYPASS Pin
Voltage
BYPASS Pin
Voltage Hysteresis
mA
V
V
F
2/05
7
POWERINT [ POWER INTEGRATIONS, INC. ]
