TOP221-227
ABSOLUTE MAXIMUM RATINGS
1
DRAIN Voltage ............................................ -0.3 to 700 V
DRAIN Current Increase (∆I
D
) in 100 ns except during
blanking time ......................................... 0.1 x I
LIMIT(MAX)(2)
CONTROL Voltage ..................................... - 0.3 V to 9 V
CONTROL Current ...............................................100 mA
Storage Temperature ..................................... -65 to 125
°C
Notes:
1. All voltages referenced to SOURCE, T
A
= 25
°C.
2. Related to transformer saturation – see Figure 13.
3. Normally limited by internal circuitry.
4. 1/16" from case for 5 seconds.
Operating Junction Temperature
(3)
................ -40 to 150
°C
Lead Temperature
(4)
................................................ 260
°C
Thermal Impedance: Y Package (θ
JA
)
(5)
.................70
°C/W
(θ
JC
)
(6)
...................2
°C/W
P/G Package:
(θ
JA
) .........45
°C/W
(7)
; 35
°C/W
(8)
(θ
JC
)
(6)
...............................5
°C/W
5. Free standing with no heatsink.
6. Measured at tab closest to plastic interface or source pin.
7. Soldered to 0.36 sq. inch (232 mm
2
), 2 oz. (610 gm/m
2
) copper clad.
8. Soldered to 1 sq. inch (645 mm
2
), 2 oz. (610 gm/m
2
) copper clad.
Conditions
Parameter
Symbol
(Unless Otherwise Specified)
See Figure 14
SOURCE = 0 V
;
T
j
= -40 to 125
°C
Min
Typ
Max
Units
CONTROL FUNCTIONS
Output
Frequency
Maximum
Duty Cycle
Minimum
Duty Cycle
PWM
Gain
PWM Gain
Temperature Drift
External
Bias Current
Dynamic
Impedance
Dynamic Impedance
I
B
Z
C
f
OSC
D
MAX
D
MIN
I
C
= 4 mA, T
j
= 25 ˚C
I
C
= I
CD1
+ 0.4 mA, See Figure 10
90
100
110
kHz
64
67
70
%
I
C
= 10 mA, See Figure 10
I
C
= 4 mA, T
j
= 25 ˚C
See Figure 4
See Note A
0.7
1.7
2.7
%
-21
-16
-11
%/mA
-0.05
%/mA/˚C
See Figure 4
I
C
= 4 mA, T
j
= 25 ˚C
See Figure 11
0.8
2.0
3.3
mA
Ω
10
15
22
Temperature Drift
SHUTDOWN/AUTO-RESTART
CONTROL Pin
Charging Current
Charging Current
Temperature Drift
I
C
T
j
= 25 ˚C
V
C
= 0 V
V
C
= 5 V
-2.4
-2
0.18
%/˚C
-1.9
-1.5
0.4
-1.2
-0.8
mA
See Note A
%/˚C
10
C
12/97
POWERINT [ POWER INTEGRATIONS, INC. ]
