L296 - L296P
THERMAL DATA
Symbol
Parameter
Value
3
Unit
Rth j-case
Rth j-amb
Thermal Resistance Junction-case
Max.
Max.
°C/W
Thermal Resistance Junction-ambient
35
C/W
°
ELECTRICAL CHARACTERISTICS
(refer to the test circuits Tj = 25oC, Vi = 35V, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit Fig.
DYNAMIC CHARACTERISTICS (pin 6 to GND unless otherwise specified)
Vo
Vi
Output Voltage Range
Input Voltage Range
Input Voltage Range
Line Regulation
Vi = 46V, Io = 1A
Vref
9
40
46
46
50
V
V
4
4
4
4
4
Vo = Vref to 36V, Io 3A
≤
Vi
Note (1), Vo = VREF to 36V Io = 4A
Vi =10V to 40V, Vo = Vref, Io = 2A
V
∆Vo
15
mV
mV
V
∆
Load Regulation
Vo = Vref
o
Io = 2A to 4A
Io = 0.5A to 4A
10
15
30
45
Vref
Internal Reference Voltage (pin 10) Vi = 9V to 46V, Io = 2A
5
5.1
0.4
5.2
V
4
∆ Vref
Average Temperature Coefficient
of Reference Voltage
Tj = 0°C to 125°C, Io = 2A
mV/°C
T
∆
Vd
Dropout Voltage Between Pin 2
and Pin 3
Io = 4A
Io = 2A
2
1.3
3.2
2.1
V
V
4
4
I2L
Current Limiting Threshold (pin 2)
L296 - Pin 4 Open,
Vi = 9V to 40V, Vo = Vref to 36V
4.5
7.5
A
4
L296P - Vi = 9V to 40V, Vo = Vref
Pin 4 Open
A
4
5
2.5
7
4.5
RIim = 22k
Ω
ISH
Input Average Current
Efficiency
Vi = 46V, Output Short-circuited
60
100
mA
%
4
4
η
Io = 3 A
Vo = Vref
Vo = 12V
75
85
SVR
f
Supply Voltage Ripple Rejection
Switching Frequency
V = 2 Vrms, fripple = 100Hz
50
85
56
dB
4
∆
i
Vo = Vref, Io = 2A
100 115
0.5
kHz
%
4
4
f
Voltage Stability of Switching
Frequency
Vi = 9V to 46V
∆
V
∆
i
∆ f
Temperature Stability of Switching Tj = 0°C to 125°C
Frequency
1
%
4
T
∆
j
fmax
Maximum Operating Switching
Frequency
Vo = Vref, Io = 1A
Note (2)
200
kHz
–
–
Tsd
Thermal Shutdown Junction
Temperature
135 145
C
°
DC CHARACTERISTICS
I3Q
Quiescent Drain Current
Vi = 46V, V7 = 0V, S1 : B, S2 : B
mA
mA
V6 = 0V
V6 = 3V
66
30
85
40
– I2L
Output Leakage Current
Vi = 46V, V6 = 3V, S1 : B, S2 : A,
V7 = 0V
2
Note
(1) : Using min. 7 Aschottky diode.
(2) : Guaranteed by design, not 100 % testedin production.
5/22
STMICROELECTRONICS [ ST ]
