R1517 Datasheet, PDF (15/38 Pages) RICOH electronics devices division – Input Voltage Range (Maximum Rating) 3.5 V to 36.0 V (50.0V)

PACKAGE INFORMATION
R1517x
NO. EA−304−170112
POWER DISSIPATION (HSOP-6J)
The power dissipation of the package is dependent on PCB material, layout, and environmental conditions. The
following conditions are used in this measurement.
Measurement Conditions
Ultra-high Wattage Land Pattern
Environment
Board Material
Mounting on Board
(Wind Velocity = 0 m/s)
Glass Cloth Epoxy Plastic
(Four-layer Board)
Board Dimensions
76.2 mm × 114.3 mm × 0.8 mm
Copper Ratio
96%
Through-holes
 0.3 mm × 28 pcs
Standard Land Pattern
Mounting on Board
(Wind Velocity = 0 m/s)
Glass Cloth Epoxy Plastic
(Double-sided Board)
50 mm × 50 mm × 1.6 mm
50%
 0.5 mm × 24 pcs
Measurement Result
Power Dissipation
Thermal Resistance
Ultra-high Wattage Land Pattern
2700 mW
37°C/W
(Ta = 25°C, Tjmax = 125°C)
Standard Land Pattern
Free Air
1700 mW
540 mW
59°C/W
185°C/W
3500
3250
3000
2750
3400
On Board
Ultra-high Wattage
Land Pattern
2500 2700
2250
2000
1750
1500
1250
1000
750
500
250
0
0
25
50
75
100 ¹⁰⁵ 125
150
Ambient Temperature (°C)
3500
3250
3000
2750
2500
2250 2100
2000
On Board
Standard Land Pattern
1750
1500 ₁₇₀₀
1250
1000
750
Free Air
670
500
250 ⁵⁴⁰
0
0
25
50
75
100 ¹⁰⁵ 125
150
Ambient Temperature (°C)
Power Dissipation vs. Ambient Temperature
76.2
50
50
20
The above graph shows the power dissipation of the
package at Tjmax = 125°C and Tjmax = 150°C. Operating
the device in the hatched range might have a negative
influence on its lifetime. The total hours of use and the total
years of use must be limited as follows:
Ultra-high Wattage
Standard
IC Mount Area (mm)
Measurement Board Pattern
Total Hours of Use
13,000 hours
Total Years of Use
(4 hours/day)
9 years
15