LNK353/354
ABSOLUTE MAXIMUM RATINGS(1,5)
DRAIN Voltage ..................................................-0.3Vto700V Notes:
PeakDRAINCurrent......................................400mA (750mA)(2) 1. All voltages referenced to SOURCE, TA = 25 °C.
FEEDBACKVoltage................................................-0.3Vto9V 2. The higher peak DRAIN current is allowed while the
FEEDBACK Current .................................................... 100 mA
DRAIN voltage is less than 400 V.
BYPASSVoltage......................................................-0.3Vto9V 3. Normally limited by internal circuitry.
StorageTemperature..........................................-65°C to150°C 4. 1/16 in. from case for 5 seconds.
OperatingJunctionTemperature(3) .....................-40°C to150°C 5. Maximum ratings specified may be applied, one at a time,
LeadTemperature(4)..........................................................260°C
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:
(θJA) ........................... 70 °C/W(2); 60 °C/W(3) 1. Measured on pin 2 (SOURCE) close to plastic interface.
(θJC)(1) ............................................... 11 °C/W 2. Soldered to 0.36 sq. in. (232 mm2), 2 oz. (610 g/m2) copper clad.
3. Soldered to 1 sq. in. (645 mm2), 2 oz. (610 g/m2) copper clad.
Conditions
SOURCE = 0 V; TJ = -40 to 125 °C
Parameter
Symbol
Min
Typ
Max
Units
See Figure 7
(Unless Otherwise Specified)
CONTROL FUNCTIONS
Average
186
200
16
214
fOSC
TJ = 25 °C
kHz
%
Output Frequency
Peak-Peak Jitter
S2 Open
Maximum Duty
Cycle
DCMAX
60
30
63
49
FEEDBACK Pin
Turnoff Threshold
Current
IFB
TJ = 25 °C
68
µA
FEEDBACK Pin
Voltage
VFB
IFB = 49 µA
1.54
1.65
200
1.76
275
V
VFB ≥2 V
(MOSFET Not Switching)
See Note A
IS1
µA
DRAIN Supply
Current
FEEDBACK Open
(MOSFET Switching)
See Notes A, B
IS2
280
365
µA
VBP = 0 V, TJ = 25 °C
See Note C
ICH1
ICH2
-5.5
-3.8
-3.3
-2.1
-1.8
-1.0
BYPASS Pin
Charge Current
mA
VBP = 4 V, TJ = 25 °C
See Note C
BYPASS Pin
Voltage
VBP
5.55
0.8
5.8
6.10
1.2
V
V
BYPASS Pin
Voltage Hysteresis
VBPH
0.95
F
2/05
7
POWERINT [ Power Integrations ]
