L4979DTR-E STMicroelectronics, L4979DTR-E Datasheet - Page 16

• Manufacturer Part Number: L4979DTR-E
• Description: IC REG PROGR WATCHDOG 8SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r
• Series: -r

Specifications of L4979DTR-E

• 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 (0.236", 6.0mm Width)
• Power - Output: *
• Regulator Topology: Positive Fixed
• Voltage - Dropout (typical): 0.2V @ 150mA
• Number Of Regulators: 1
• Current - Limit (min): 150mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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Equation 2: pulse calculation formula
where δ = t
Figure 12. Thermal fitting model of V
Table 12.
P
/T
SO-20 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)
2
)
Z THδ
Doc ID 10262 Rev 7
=
R TH δ
reg
⋅
in SO-20
+
Z THtp 1 δ
Footprint
0.0003
0.0025
0.015
0.15
2.2
1.5
10
15
35
4
2
4
(
–
)
18
2
7