L4973D3.3 STMicroelectronics, L4973D3.3 Datasheet - Page 12

• 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

Application circuit
6
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Application circuit
Figure 7.
Figure 8.
V
V
CC
CC
Application circuit (see
Application circuit (see
C1
C1
R2
C2
R2
C2
C7
C3
C7
C3
C4
C4
C5
C5
1
17
16
7,8
1
17
16
7,8
11
11
R1
C6
D97IN665A
Figure 4
Figure 4
R1
C6
L4973V5.1
D97IN664A
L4973V3.3
INH
INH
10
10
13,14,15
13,14,15
4,5,6
4,5,6
SYNC
SYNC
18
18
12
12
part list)
part list)
2,3
9
2,3
9
D1
D1
C8
C8
L1
L1
3 x
C0
3 x
C0
C12
C12
Vo
Vo
L4973