7079

NTE7079
Integrated Circuit
Hybrid Switching Voltage Regulator
Absolute Maximum Ratings:
Maximum Peak Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 850V
Input Current, IIN
Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A
Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12A
Maximum Output Current (VO = 115V), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3A
Power Dissipation (TC = +100°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27W
Power Transistor Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Temperature Range (Case Temperature, Note 1), Topr . . . . . . . . . . . . . . . –20° to +125°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +125°C
Note 1. Recommended Operating Temperature: Topr = +100°C
Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Voltage
VO
VIN = 220V, IO = 900mA, Note 2
108.5 110.0
111.5
V
Sensing Voltage (Fixed Voltage)
VO
IIN = 7mA
41.3
42.3
V
41.8
Line Regulation
RegLINE VIN = 180V to 280V, IO = 900mA
Initial Value ±1V
V
Load Regulation
RegLOAD VIN = 220V, IO = 550mA to 900mA
Initial Value ±2V
V
Output Voltage Temperature
Coefficient
Saturation Voltage
TC = –20° to +100°C, IIN = 7mA
–
±2
–
mV/°C
VCE(sat)
IC = 3A, IB = 600mA
–
–
0.4
V
VBE(sat)
IC = 3A, IB = 600mA
–
–
1.5
V
Kt
DC Current Gain
hFE
IC = 1A, VCE = 4V
15
–
38
Collector Cutoff Current
ICEX
VCE = 850V, VBE = 1.5V
–
–
1
mA
Power Transistor Thermal
Resistance
RΘJC
Between Junction and Case
–
1.8
–
°C/W
IC = 3A, IB1 = 500mA, IB2 = –500mA,
RL = 67Ω
Ω
–
–
11.0
µs
–
–
0.5
µs
Switching Time
ts
tf
Note 2. Output voltage is determined by the ratio between the sensing winding “D” and the secondary
winding “S”.
Pin Connection Diagram
(Front View)
5 VOUT Adjust
4 GND
3 Input
2 Base Drive
1 Voltage Sensing
.700 (17.7)
.177 (4.5)
.700 (17.7)
.177 (4.5)
.196
(5.0)
1.101
(527.9)
1
2
3
4
OR
5
1
2
3
4
5
1.691
(42.9)
.133 (3.4)
.276
(7.0)
.590
(15.0)
.237
(6.0)
.100 (2.54)
.150 (3.8)
.500 (12.7)
.100 (2.54)
.150
(3.8)
.500 (12.7)
.177
(4.5)
Similar pages