S-19311BF2A-V5T2U4 Datasheet, PDF (27/39 Pages) Seiko Instruments Inc – CMOS VOLTAGE REGULATOR WITH RESET FUNCTION

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH RESET FUNCTION
Rev.1.0_02
S-19311 Series
 Thermal Characteristics
1. TO-252-5S(A)
5.0 _{Board 5}
4.46 W
4.0
Board 4
4.03 W
3.0 Board 3
3.29 W
Tj = +150°C max.
2.0 _{Board 2}
2.08 W
Board 1
1.0 _{1.45 W}
0
0
50
100
150
Ambient temperature (Ta) [C]
Figure 22 Power Dissipation of Package (When Mounted on Board)
1. 1 Board 1
76.2 mm
Figure 23
Table 11
Item
Specification
Thermal resistance value
(θja)
Size
86°C/W
114.3 mm × 76.2 mm × t1.6 mm
Material
FR-4
Number of copper foil layer 2
1 Land pattern and wiring for testing: t0.070 mm
Copper foil layer
2
3
−
−
4 74.2 mm × 74.2 mm × t0.070 mm
Thermal via
−
1. 2 Board 2
76.2 mm
Figure 24
Table 12
Item
Specification
Thermal resistance value
(θja)
Size
60°C/W
114.3 mm × 76.2 mm × t1.6 mm
Material
FR-4
Number of copper foil layer 4
1 Land pattern and wiring for testing: t0.070 mm
Copper foil layer
2 74.2 mm × 74.2 mm × t0.035 mm
3 74.2 mm × 74.2 mm × t0.035 mm
4 74.2 mm × 74.2 mm × t0.070 mm
Thermal via
−
27