L4973D3.3 STMicroelectronics, L4973D3.3 Datasheet - Page 5

• Manufacturer Part Number: L4973D3.3
• Description: IC BUCK SYNC 3.3/ADJ 3.5A SOIC20
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L4973D3.3

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V, 0.5 ~ 50 V
• Current - Output: 3.5A
• Frequency - Switching: 100kHz ~ 300kHz
• Voltage - Input: 8 ~ 55 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Power - Output: 4W
• Output Voltage: 50 V
• Mounting Style: SMD/SMT
• For Use With: 497-4743 - BOARD EVAL FOR L4973X SW REG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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