L4973D3.3 STMicroelectronics, L4973D3.3 Datasheet - Page 10

• 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

Evaluation board
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Table 5.
Table 6.
Table 7.
Reference
Reference
Reference
C11
C11
C13
C14
U1
R3
R4
R3
R4
L1
Component list (fsw = 150 kHz, V
Resistor divider for V
Resistor divider for V
68 μH I
Capacitor 150 μF 35 V
Capacitor 150 μF 35 V
Capacitor 100 nF 5 %
Resistor 2.7 kΩ 1%
Resistor 2.7 kΩ 1%
Resistor 1 kΩ 1%
RMS
Not mounted
Not mounted
Description
Description
Description
= 3.4 A I
SAT
OUT
OUT
= 6.7 A
= 12 V
= 3.3 V
EKY-350ELL151MHB5D
EKY-350ELL151MHB5D
OUT
DO5040H-683MLD
Part number
Part number
Part number
L4973V3.3
= 5 V) (continued)
STMicroelectronics
Nippon Chemi-con
Nippon Chemi-con
Manufacturer
Manufacturer
Manufacturer
Coilcraft
L4973