L4979D STMicroelectronics, L4979D Datasheet - Page 14

• Manufacturer Part Number: L4979D
• Description: IC VOLTAGE REG LDO SO-8
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L4979D

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 150mA
• Voltage - Input: 5.6 ~ 31 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Polarity: Positive
• Input Voltage Max: 31 V
• Output Voltage: 5 V
• Output Type: Fixed
• Dropout Voltage (max): 0.4 V at 150 mA
• Output Current: 300 mA
• Line Regulation: 25 mV
• Load Regulation: 25 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.2
14/22
Table 11.
SO-20 thermal data
Figure 9.
1. Layout condition of R
Cu thickness = 35 mm, Copper areas: from minimum pad lay-out to 6cm
SO-20 PC board
SO-8 thermal parameter
C1 (W.s/°C)
C2 (W.s/°C)
C3 (W.s/°C)
C4 (W.s/°C)
C5 (W.s/°C)
C6 (W.s/°C)
Area (cm
R1 (°C/W)
R2 (°C/W)
R3 (°C/W)
R4 (°C/W)
R5 (°C/W)
R6 (°C/W)
th
and Z
2
)
th
measurements (PCB: FR4 area = 58 mm x 58 mm, PCB thickness = 2 mm,
Doc ID 10262 Rev 7
Footprint
0.0003
0.0025
0.03
0.04
1.05
0.1
41
40
58
4
2
2
2
).
40
2
2