NTE1867 & NTE1868
Integrated Circuit
Hybrid Switching Voltage Regulator
Features:
D
Few External Components Needed
D
Conversion Efficiency: 85%
D
Accurate Voltage Setting:
鹵2%
D
Low Switching Noise
D
Output Voltage Adjustable
Applications:
D
Power Supply Circuits for Electrionic Typewriter, Printer, and Copy Machines
D
Power Supply for VCR, Personal Wireless Station, and Battery Charger
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
DC Input Voltage, V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45V
DC Input Current, I
O
Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2A
Pulsed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3A
Power Dissipation, P
D
T
C
= +25擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75W
T
C
= +100擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15W
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +100擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +100擄C
Electrical Characteristics:
(T
A
= +25擄C unles otherwise specified)
Parameter
DC Input Voltage Range
NTE1867
NTE1868
Output Voltage Setting
NTE1867
NTE1868
Line Regulation
Load Regulation
Efficiency
Ripple Rejection
Oscillating Frequency
鈭哣
LINE
V
IN
= 20V to 28V, I
O
= 1A
鈭哣
LOAD
V
IN
= 24V, I
O
= 0.5A to 1.5A
畏
R
REJ
f
OSC
V
IN
= 24V, I
O
= 1A
f = 100Hz to 200Hz
V
IN
= 24V, I
O
= 1A
V
O
V
IN
= 24V, I
O
= 1A
Symbol
V
IN
I
O
= 1A
Test Conditions
Min
18
19
11.8
12.8
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Typ
鈥?/div>
鈥?/div>
12.0
13.0
鈥?/div>
鈥?/div>
85
45
25
Max
鈥?/div>
鈥?/div>
12.2
13.2
60
100
鈥?/div>
鈥?/div>
鈥?/div>
Unit
V
V
V
V
mV
mV
%
dB
kHz
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