Datasheet

D
4/03
TNY253/254/255
10
Storage Temperature ..................................... -65 to 150 °C
Operating Junction Temperature
(2)
................ -40 to 150 °C
Lead Temperature
(3)
................................................ 260 °C
Thermal Impedance (θ
JA
) ................ 70 °C/W
(4)
, 55 °C/W
(5)
Thermal Impedance (θ
JC
) ..................................... 11 °C/W
4. Soldered to 0.36 sq. inch (232 mm
2
), 2 oz. (610 gm/m
2
) copper clad.
5. Soldered to 1 sq. inch (645 mm
2
), 2 oz. (610 gm/m
2
) copper clad.
ABSOLUTE MAXIMUM RATINGS
(1)
DRAIN Voltage ....................................... - 0.3 V to 700 V
Peak DRAIN Current (TNY253/4) ........................400 mA
Peak DRAIN Current (TNY255) ...........................530 mA
ENABLE Voltage ........................................ - 0.3 V to 9 V
ENABLE Current...................................................100 mA
BYPASS Voltage .......................................... -0.3 V to 9 V
1. All voltages referenced to SOURCE, T
A
= 25 °C.
2. Normally limited by internal circuitry.
3. 1/16" from case for 5 seconds.
40 44 48
66 68 71
-68 -50 -30
-15 -10 -5
1.10 1.45 1.80
-58 -42 -25
160 200
140 180
-3.5
-2.5
5.8
0.72
CONTROL FUNCTIONS
Output
Frequency
Maximum
Duty Cycle
ENABLE Pin Turnoff
Threshold Current
ENABLE Pin
Hysteresis Current
ENABLE Pin
Voltage
ENABLE Short-
Circuit Current
DRAIN
Supply Current
BYPASS Pin
Charge Current
BYPASS Pin
Voltage
BYPASS
Hysteresis
kHz
%
µA
µA
V
µA
µA
µA
mA
mA
V
V
Min Typ Max
f
OSC
DC
MAX
I
DIS
I
HYS
V
EN
I
ENSC
I
S1
I
S2
I
CH1
I
CH2
V
BP
V
BPH
Parameter
Symbol
(Unless Otherwise Specified)
See Figure 14
Conditions
TNY253
TNY255
TNY253
TNY254
TNY255
TNY253
TNY254
TNY255
TNY253
TNY254
TNY255
130
215
-4.5
-3.3
TNY254
ENABLE Open
(MOSFET Switching)
See Note B, C
T
J
= 25 °C
115 140
265
-2.0
-5.0
-4.0 -1.0
5.6 6.1
0.60 0.85
Units
SOURCE = 0 V; T
J
= -40 to 125 °C
TNY253
TNY255
67
TNY254
T
J
= -40 °C to 125 °C
T
J
= 125 °C
-68
-52
-45
V
EN
= 0 V, T
J
= -40 °C to 125 °C
V
EN
= 0 V, T
J
= 125 °C
-58
-45 -38
V
BP
= 0 V, T
J
= 25 °C
See Note D, E
V
BP
= 4 V, T
J
= 25 °C
See Note D, E
64 69
-4.8
-1.8
-6.0
-3.0
170
215
TNY253
TNY254
TNY255
S1 Open
See Note A
I
EN
= -25 µA
V
EN
= 0 V
(MOSFET Not Switching)
See Note B
See Note D