EVAL4971 查看數據表（PDF） - STMicroelectronics
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EVAL4971 Datasheet PDF : 13 Pages
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L4971
Table 3. 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
DIP8
1
W
SO16
0.8
W
-40 to 150
°C
Table 4. Thermal Data
Symbol
Parameter
Rth(j-amb) Thermal Resistance Junction to ambient
(*) Package mounted on board.
Max.
DIP8
90 (*)
SO16
110 (*)
Unit
°C/W
3 ELECTRICAL CHARACTERISTCS
Table 5. (Tj = 25°C, Cosc = 2.7nF, Rosc = 20kΩ, VCC = 24V, unless otherwise specified.)
* Specification Refered to Tj from 0 to 125°C
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
DYNAMIC CHARACTERISTIC
VI
Operating input voltage range Vo = 3.3 to 50V; Io = 1.5A
*
8
55
V
Vo
Output voltage
Io = 0.5A
3.33 3.36 3.39
V
Io = 0.2 to 1.5A
3.292 3.36 3.427 V
Vcc = 8 to 55V
* 3.22 3.36 3.5
V
Vd
Dropout voltage
Vcc = 10V; Io = 1.5A
0.44 0.55
V
*
0.88
V
Il
Maximum limiting current
Vcc = 8 to 55V
Efficiency
Vo = 3.3V; Io = 1.5A
*
2
2.5
3
A
85
%
fs
Switching frequency
*
90
100 110 KHz
SVRR Supply voltage ripple rejection Vi = Vcc+2VRMS; Vo = Vref;
60
dB
Io = 1.5A; f ripple = 100Hz
Voltage stability of switching Vcc = 8 to 55V
frequency
3
6
%
Temp. stability of switching
frequency
Tj = 0 to 125°C
4
%
3/13
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