Datasheet

ELECTRICAL CHARACTERISTIC
(Refer to the test circuit V
i
= 30V T
j
=
25
°
C unless otherwise specified )
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
DYNAMIC CHARACTERISTICS
V
o
Output Voltage Range V
i
= 46V I
o
= 0.5A
V
ref
36 V 2
V
i
Input Voltage Range V
o
= V
ref
to 36V I
o
= 0.5A 9 46 V 2
V
12
Feedback Voltage V
i
= 9 to 46V I
o
= 0.5A 5 5.1 5.2 V 2
I
12
Input Bias Current
V
i
= 15V V
12
= 6V
V
17f
= 5V
520
µ
A3a
V
OS12
Input Offset Voltage
510mV3a
∆
V
o
Line Regulation
V
i
= 9 to 46V V
o
= V
ref
I
o
= 0.5A
15 50 mV 2
∆
V
o
Load Regulation
V
o
= V
ref
I
o
= 0.5 to 1.5A
15 45 mV 2
V
d
Dropout Voltage Between
pin 3 and pin 2
I
2
= 3A
V
i
= 20V
1.5 2 V 2
I
2L
Current Limiting
V
i
= 9 to 46V
V
o
= V
ref
to 28V
3.5 6.5 A 2
I
o
Maximum Operating Load
Current
V
i
= 9 to 46V V
o
= V
ref
1.5 A 2
SVR
Supply Voltage Ripple
Rejection
V
i
= 2Vrms V
o
= V
ref
fripple = 100Hz I
o
= 1.5A
50 56 dB 2
V
11
Reference Voltage
V
i
= 9 to 46V
O < I
11
< 5mA
5 5.1 5.2 V 3a
Average Temperature
Coefficient of Ref. Volt.
T
j
= 0 to 125
°
C
0.4 mV/
°
C–
∆
V
11
V
ref
Line Regulation V
i
= 9 to 46V
10 20 mV 3a
∆
V
11
V
ref
Line Regulation
I
ref
= 0 to 5mA
V
i
= 46V R
osc
= 51K
Ω
65
69
715mV3a
η
Efficiency I
o
= 1.5A V
o
= V
ref
65 75 % 2
T
sd
Thermal Shutdown
Junction Temperature
145 150
°
C–
Hysteresis
30
°
C–
DC CHARACTERISTICS
I
q
Quescent Drain Current
V
i
= 46V
I
o
= 0mA
V
16
= V
12
= 0 14 20 mA 3a
V
16
= V
ref
V
12
= 5.3V
11 16 mA 3a
INHIBIT
V
16L
Low Input Voltage V
i
= 9 to 46V
0.3 0.8 V 2
V
16H
High Input Voltage V
i
= 9 to 46V
25.5V2
I
16L
Input Current with Low
Input Voltage
V
16
= 0.8V
50 100
µ
A2
I
16L
Input Current with High
Input Voltage
V
16
= 2V
10 20
µ
A2
L4963 - L4963D
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