TOP221-227
ABSOLUTE MAXIMUM RATINGS1
Operating Junction Temperature(3) ................ -40 to 150 °C
Lead Temperature(4) ................................................ 260 °C
Thermal Impedance: Y Package (θJA)(5) .................70 °C/W
(θJC)(6) ...................2 °C/W
DRAIN Voltage ............................................ -0.3 to 700 V
DRAIN Current Increase (∆ID) in 100 ns except during
blanking time ......................................... 0.1 x ILIMIT(MAX)
(2)
CONTROL Voltage ..................................... - 0.3 V to 9 V
CONTROL Current ...............................................100 mA
Storage Temperature ..................................... -65 to 125 °C
Notes:
P/G Package:
(θJA) .........45 °C/W(7); 35 °C/W(8)
(θJC)(6)...............................5 °C/W
5. Free standing with no heatsink.
1. All voltages referenced to SOURCE, TA = 25 °C.
2. Related to transformer saturation – see Figure 13.
3. Normally limited by internal circuitry.
4. 1/16" from case for 5 seconds.
6. Measured at tab closest to plastic interface or source pin.
7. Soldered to 0.36 sq. inch (232 mm2), 2 oz. (610 gm/m2) copper clad.
8. Soldered to 1 sq. inch (645 mm2), 2 oz. (610 gm/m2) copper clad.
Conditions
(Unless Otherwise Specified)
See Figure 14
Parameter
Symbol
Min
Typ Max
Units
SOURCE = 0 V; Tj = -40 to 125 °C
CONTROL FUNCTIONS
Output
fOSC
IC = 4 mA, Tj = 25 ˚C
90
64
100
67
110
70
kHz
%
Frequency
Maximum
Duty Cycle
DMAX
IC = ICD1 + 0.4 mA, See Figure 10
Minimum
Duty Cycle
0.7
1.7
2.7
DMIN
%
IC = 10 mA, See Figure 10
IC = 4 mA, Tj = 25 ˚C
See Figure 4
PWM
Gain
%/mA
%/mA/˚C
mA
-21
-16
-0.05
2.0
-11
PWM Gain
Temperature Drift
See Note A
External
Bias Current
See Figure 4
IB
0.8
10
3.3
22
IC = 4 mA, Tj = 25 ˚C
See Figure 11
Dynamic
Impedance
ZC
Ω
15
Dynamic Impedance
Temperature Drift
%/˚C
0.18
SHUTDOWN/AUTO-RESTART
VC = 0 V
Tj = 25 ˚C
-2.4
-2
-1.9
-1.5
-1.2
-0.8
CONTROL Pin
Charging Current
IC
mA
VC = 5 V
Charging Current
Temperature Drift
See Note A
%/˚C
0.4
C
10
12/97
POWERINT [ Power Integrations ]
