L4971D(2000) データシートの表示（PDF） - STMicroelectronics
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L4971D Datasheet PDF : 12 Pages
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L4971
THERMAL DATA
Symbol
Parameter
Rth(j-amb) Thermal Resistance Junction to ambient
(*) Package mounted on board.
Max.
Minidip
90 (*)
SO16
110 (*)
Unit
°C/W
ABSOLUTE MAXIMUM RATINGS
Symbol
Minidip
S016
V5
V11
V4
V5,V6
I4
V6-V5
V6
V7
V2
V8
I5,I6
V12-V11
V12
V13
V3
V14
Parameter
Input voltage
Output DC voltage
Output peak voltage at t = 0.1µs f=200KHz
Maximum output current
Bootstrap voltage
Analogs input voltage (VCC = 24V)
Analogs input voltage (VCC = 24V)
(VCC = 20V)
Ptot
Power dissipation a Tamb ≤ 60°C
Tj,Tstg
Junction and storage temperature
Value
Unit
58
V
-1
V
-5
V
int. limit.
14
V
70
V
12
V
13
V
6
V
-0.3
V
Minidip
1
W
SO16
0.8
W
-40 to 150 °C
ELECTRICAL CHARACTERISTICS (Tj = 25°C, Cosc = 2.7nF, Rosc = 20kΩ, VCC = 24V, unless other-
wise specified.) * Specification Refered to Tj from 0 to 125°C
Symbol
Parameter
DYNAMIC CHARACTERISTIC
VI
Operating input voltage range
Vo
Output voltage
Vd
Dropout voltage
Test Condition
Vo = 3.3 to 50V; Io = 1.5A
Io = 0.5A
Io = 0.2 to 1.5A
Vcc = 8 to 55V
Vcc = 10V; Io = 1.5A
Il
fs
SVRR
Soft Start
Inhibit
VL L
IsLL
Maximum limiting current
Efficiency
Switching frequency
Supply voltage ripple rejection
Voltage stability of switching
frequency
Temp. stability of switching
frequency
Soft start charge current
Soft start discharge current
Low level voltage
Isource Low level
Vcc = 8 to 55V
Vo = 3.3V; Io = 1.5A
Vi = Vcc+2VRMS; Vo = Vref;
Io = 1.5A; f ripple = 100Hz
Vcc = 8 to 55V
Tj = 0 to 125°C
Min. Typ. Max. Unit
*
8
55
V
3.33 3.36 3.39
V
3.292 3.36 3.427 V
* 3.22 3.36 3.5
V
0.44 0.55
V
*
0.88
V
*
2
2.5
3
A
85
%
* 90
100 110 KHz
60
dB
3
6
%
4
%
30
40
50
µA
6
10
14
µA
*
0.9
V
*
5
15
µA
3/12
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