NTE1894
Integrated Circuit
Hybrid Switching Voltage Regulator
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Peak Input Voltage, V
IN
500V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Current, I
IN
Continuous
10A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse
20A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +100
C), P
D
27W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction Temperature, T
J
+150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Case Temperature Range, T
opr
20
to +125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
30
to +125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Set Output Voltage
V
O
I
IN
= 7mA
41.3
41.8
42.3
V
Output Voltage
V
IN
= 100V, I
O1
= 1.2A
115
2
V
Line Regulation vs. Input Voltage
Reg
LINE1
V
IN
= 85V to 132V, I
O
= 1.2A
Initial Value
2
V
Line Regulation vs. Output Current
Reg
LINE2
V
IN
= 100V, I
O1
= 0.4 to 1.2A
Initial Value
2
V
Temperature Coefficient of Output Voltage
T
C
= 20
to +100
C, I
IN
= 7mA
2
mV/
C
Power Transistor Characteristics
CollectorEmitter Saturation Voltage
V
CE(sat)
I
C
= 5A, I
B
= 1A
0.5
V
BaseEmitter Saturation Voltage
V
BE(sat)
I
C
= 5A, I
B
= 1A
1.5
V
Collector Cutoff Current
I
CEX
V
CE
= 500V, V
BE
= 1.5V
1
mA
DC Current Gain
h
FE
V
CE
= 4V, I
C
= 1A
15
40
Switching TurnOn Time
t
on
10
s
Switching Fall Time
t
f
0.4
s
Thermal Resistance, Junction to Case
R
JC
Top Part of Junction Stem
1.8
C/W
Pin Connection Diagram
V
OUT
Sense ()
5
4
3
2
Soft Start
GND (E)
Input (C)
Base Drive (B)
1
(Front View)
OR
.700 (17.7)
.177 (4.5)
.500 (12.7)
.150 (3.8)
.100 (2.54)
.133 (3.4)
.196
(5.0)
1
2
3
4
5
1.101
(527.9)
.590
(15.0)
.237
(6.0)
.700 (17.7)
.177 (4.5)
.500 (12.7)
.150
(3.8)
.100 (2.54)
1
2
3
4
5
1.691
(42.9)
.276
(7.0)
.177
(4.5)
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