L4976D(2000) Ver la hoja de datos (PDF) - STMicroelectronics
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L4976D Datasheet PDF : 11 Pages
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THERMAL DATA
Symbol
Parameter
Rth(j-amb) Thermal Resistance Junction to ambient
(*) Package mounted on board.
OPERATING TEMPERATURE RATING
Symbol
Parameter
TJ
Junction Temperature Range
L4976
Max.
Minidip
90 (*)
SO16
110 (*)
Unit
°C/W
Value
Unit
-40 to 150
°C
ABSOLUTE MAXIMUM RATINGS
Symbol
Minidip
S016
V5
V11
V4
V5,V6
I4
V6-V5
V6
V7
V8
I5,I6
V12-V11
V12
V13
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)
(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
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 = 1A
Io = 0.5A
Io = 0.2 to 1A
Vcc = 8 to 55V
Vcc = 10V; Io = 1A
Il
fs
SVRR
Maximum limiting current
Efficiency
Switching frequency
Supply voltage ripple rejection
Voltage stability of switching
frequency
Temp. stability of switching
frequency
Vcc = 8 to 55V
Vo = 3.3V; Io = 1A
Vi = Vcc+2VRMS; Vo = Vref;
Io = 1.A; 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
* 1.5
2
2.5
A
85
%
* 90
100 110 KHz
60
dB
3
6
%
4
%
3/11
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