Datasheet

THERMAL DATA
Symbol Parameter Value Unit
R
th j-case
Thermal Resistance Junction-case Max. 3 °C/W
R
th j-amb
Thermal Resistance Junction-ambient Max. 35 °C/W
ELECTRICAL CHARACTERISTICS
(refer to the test circuits T
j
=25
o
C, V
i
= 35V, unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
DYNAMIC CHARACTERISTICS (pin 6 to GND unless otherwise specified)
V
o
Output Voltage Range V
i
= 46V, I
o
=1A V
ref
40 V 4
V
i
Input Voltage Range V
o
=V
ref
to 36V, I
o
≤ 3A 9 46 V 4
V
i
Input Voltage Range Note (1), V
o
=V
REF
to 36V I
o
=4A 46 V 4
∆V
o
Line Regulation V
i
=10V to 40V, V
o
=V
ref
,I
o
=2A 15 50 mV 4
∆V
o
Load Regulation V
o
=V
ref
I
o
=2Ato4A
I
o
= 0.5A to 4A
10
15
30
45
mV 4
V
ref
Internal Reference Voltage (pin 10) V
i
= 9V to 46V, I
o
= 2A 5 5.1 5.2 V 4
∆ V
ref
∆ T
Average Temperature Coefficient
of Reference Voltage
T
j
=0°C to 125°C, I
o
= 2A 0.4 mV/°C
V
d
Dropout Voltage Between Pin 2
and Pin 3
I
o
=4A
I
o
=2A
2
1.3
3.2
2.1
V
V
4
4
I
2L
Current Limiting Threshold (pin 2) L296 - Pin 4 Open,
V
i
= 9V to 40V, V
o
=V
ref
to 36V
4.5 7.5 A 4
L296P - V
i
= 9V to 40V, V
o
=V
ref
Pin 4 Open
R
Iim
= 22kΩ
5
2.5
7
4.5
A4
I
SH
Input Average Current V
i
= 46V, Output Short-circuited 60 100 mA 4
η Efficiency I
o
=3A
V
o
=V
ref
V
o
= 12V
75
85
%4
SVR Supply Voltage Ripple Rejection ∆V
i
=2V
rms
,f
ripple
= 100Hz
V
o
=V
ref
,I
o
=2A
50 56 dB 4
f Switching Frequency 85 100 115 kHz 4
∆ f
∆ V
i
Voltage Stability of Switching
Frequency
V
i
= 9V to 46V 0.5 % 4
∆ f
∆ T
j
Temperature Stability of Switching
Frequency
T
j
=0°C to 125°C1%4
f
max
Maximum Operating Switching
Frequency
V
o
=V
ref
,I
o
= 1A 200 kHz –
T
sd
Thermal Shutdown Junction
Temperature
Note (2) 135 145 °C–
DC CHARACTERISTICS
I
3Q
Quiescent Drain Current V
i
= 46V, V
7
= 0V, S1 : B, S2 : B
V
6
=0V
V
6
=3V
66
30
85
40
mA
–I
2L
Output Leakage Current V
i
= 46V, V
6
= 3V, S1 : B, S2 : A,
V
7
=0V
2mA
Note (1) :Using min. 7 A schottky diode.
(2) : Guaranteed by design, not 100 % tested in production.
L296 - L296P
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