LNK501
ABSOLUTE MAXIMUM RATINGS(1,4)
Notes:
DRAIN Voltage ........................................ -0.3 V to 700 V
DRAIN Peak Current .............................................400 mA
CONTROL Voltage ..................................... - 0.3 V to 9 V
CONTROL Current (not to exceed 9 V)................100 mA
Storage Temperature ................................-65 °C to 150 °C
Operating Junction Temperature(2) ...........-40 °C to 150 °C
Lead Temperature(3) ................................................ 260 °C
1. All voltages referenced to SOURCE, TA = 25 °C.
2. Normally limited by internal circuitry.
3. 1/16" from case for 5 seconds.
4. 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
Notes:
Thermal Impedance: P/G Package:
(θJA) .............. 70 °C/W(2), 55 °C/W(3)
(θJC)(1) ................................. 11 °C/W
1. Measured on the SOURCE pin close to plastic interface.
2. Soldered to 0.36 sq. inch (232 mm2), 2 oz. (610 gm/m2) copper clad.
3. Soldered to 1 sq. inch (645 mm2). 2 oz. (610 gm/m2) copper
clad.
Conditions
(Unless Otherwise Specified)
SOURCE = 0 V; TJ = -40 °C to 125 °C
See Figure 12
Parameter
Symbol
Min
Typ Max
Units
CONTROL FUNCTIONS
Switching
fOSC
IC = IDCT, TJ = 25 °C
38
26
42
30
46
34
kHz
kHz
Frequency
Duty Cycle = DCLF
Low Switching
fOSC(LOW)
Frequency
TJ = 25 °C
Duty Cycle at
Frequency Switching from fOSC to
DCLF
%
%
2.4
3.8
5.2
Low Switching
fOSC(LOW), TJ = 25 °C
Frequency
Low Frequency
DC(RANGE)
Frequency = fOSC(LOW), TJ = 25 °C
1.8
74
3.15
77
4.5
80
Duty Cycle Range
Maximum
DCMAX
%
IC = 1.5 mA
Duty Cycle
PWM
Gain
%/µA
DCREG
IC = IDCT, TJ = 25 °C
-0.45
-0.35
-0.25
CONTROL Pin
TJ = 25 °C
See Figure 4
IDCT
mA
2.24
2.30
2.36
Current at 30%
Duty Cycle
CONTROL Pin
VC(IDCT)
V
5.5
60
5.75
90
6
IC = IDCT
Voltage
Dynamic
ZC
Ω
IC = IDCT, TJ = 25 °C
120
Impedance
F
9/02
11
POWERINT [ Power Integrations ]
