NTE1840 & NTE1841
Integrated Circuit
Hybrid Switching Voltage Regulator
Features:
D
Triple Diffused Transistor Chips Incorporated
D
Compact Plastic Package with Industry Standard Reliability
D
Output Voltage is PreFixed No External Adjustment is Required
Absolute Maximum Ratings:
Peak Input Voltage, V
IN
550V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Current, I
IN
Continuous
6A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse
12A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +100
C), P
D
27W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Power Transistor Junction Temperature, T
J
+150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range (T
C
), T
opr
20
to +125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
30
to +125
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
C unles otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
V
IN
= 120V, I
O
= 900mA
114.5
116.0
117.5
V
Detecting Voltage (Fixed Output)
NTE1840
V
O
I
in
= 7mA
41.3
41.8
42.3
V
NTE1841
42.5
43.0
43.5
V
Load Regulation
Reg
LOAD
V
IN
= 120V, I
O
= 500mA to 900mA
Initial Value
1
V
Output Voltage Temperature
Coefficient
T
C
= 20
to +100
C, I
in
= 7mA
2
mV/
C
Saturation Voltage
V
CE(sat)
I
C
= 2A, I
B
= 400mA
1.0
V
V
BE(sat)
I
C
= 2A, I
B
= 400mA
1.5
V
DC Current Gain
h
FE
I
C
= 1A, V
CE
= 4V
10
40
Collector Cutoff Current
I
CEX
V
CE
= 550V, V
BE
= 1.5V
1.0
mA
Power Transistor Thermal
Resistance
R
thJC
Between Junction and Stem
Upper Surface
1.8
C/W
Switching Time
t
s
I
C
= 2A, I
B1
= 300mA, I
B2
= 300mA,
12
s
t
f
R
L
= 50
7
s
Note 1. Recommended Case Temperature: T
opr
= +100
C.
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