Datasheet

L4973 Electrical data
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3 Electrical data
3.1 Maximum ratings
3.2 Thermal data
Table 2. Absolute maximum ratings
Symbol
Parameter Value Unit
DIP-18 S0-20
V
7
,V
8
V
9
,V
8
Input voltage 58 V
V
2
,V
3
V
2
,V
3
Output DC voltage
Output peak voltage at t = 0.1 μs f = 200 kHz
-1
- 5
V
V
I
2
,I
3
I
2
,I
3
Maximum output current int. limit.
V
9
-V
8
V
10
-V
8
14 V
V
9
V
10
Bootstrap voltage 70 V
V
11
V
12
Analogs input voltage (V
CC
= 24 V) 12 V
V
17
V
19
Analogs input voltage (V
CC
= 24 V) 13 V
V
12
V
13
(V
CC
= 20 V)
6
-0.3
V
V
V
18
V
20
(V
CC
= 20 V)
5.5
0.3
V
V
V
10
V
11
Inhibit
V
CC
-0.3
V
V
P
tot
DIP 12+3+3
Power dissipation a Tpins ≤ 90 °C
(T
A
= 70 °C no copper area)
(T
A
= 70 °C 4 cm copper area on PCB)
5
1.3
2
W
W
W
SO-20
Power dissipation a T
pins
= 90 °C
4W
T
J
,T
STG
Junction and storage temperature -40 to 150 °C
Table 3. Thermal data
Symbol Parameter DIP-18 SO-20 Unit
R
thJP
Maximum thermal resistance junction-pin 12 15 °C/W
R
thJA
Maximum thermal resistance junction-ambient 60
(1)
1. Package mounted on board
80
(1)
°C/W