Absolute Maximum Ratings (Cont’d):
(T
A
= +25
°
C unless otherwise specified)
TR1 (Cont’d)
Allowable Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chip Junction Temperature, T
J
max
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction
–
to
–
Case, R
thJ
–
C
ZD1
Allowable Power Dissipation, P
ZD1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chip Junction Temperature, T
J (ZD1)
max
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction
–
to
–
Case, R
thJ
–
C (ZD1)
78.1W
+150
°
C
1.6
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
500mW
+125
°
C
0.2
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allowable Operating Ranges:
(T
A
= +25
°
C unless otherwise specified)
Pin4 Input Voltage, V
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oscillator Frequency, f
OSC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
6 to
±
24V
20 to 120kHz
Operating Characteristics:
(T
A
= +25
°
C, T
C
= +25
°
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Voltage Setting
I
IN
= 8mA
T
C
= 0
°
to +105
°
C, I
IN
= 8mA
40.0
40.5
41.0
V
Output Voltage Temperature Coefficient
–
7
–
mV/
°
C
TR1
Drain
–
Source Breakdown Voltage
V
(BR)DSS
I
D
= 10mA, V
GS
= 0V
V
GS(off)
I
D
= 1mA, V
DS
= 10V
R
DS(on)
I
D
= 2.5A, V
GS
= 10V
500
–
–
V
Gate
–
Source Cutoff Voltage
2.0
–
3.0
V
ON Resistance
NTE7125
NTE7126
–
–
1.4
0.8
1.8
1.8
Input Capacitance
C
iss
V
DS
= 10V, V
GS
= 0V, f = 1MHz
–
800
–
pF
ZD1
Zener Voltage
V
Z
I
Z
= 5mA
23.7
–
26.3
V
Pin Connection Diagram
(Front View)
V
ref
(40.5V typ) Input
TR1 Source
TR1 Source
OCP Setting Level Input
Error Detection Level
TR1 Gate
Drive Voltage Input
GND
Amplifier Circuit Control
TR1 Drain
11
TR1 Drain
10
9
8
7
6
5
4
3
2
1
No Pin
12