R1218K021A RICOH [RICOH electronics devices division], R1218K021A Datasheet - Page 19

• Manufacturer Part Number: R1218K021A
• Description: Step-up DC/DC converter for White LED Backlight
• Manufacturer: RICOH [RICOH electronics devices division]

POWER DISSIPATION (PLP1820-6)
This specification is at mounted on board. Power Dissipation (P
This specification is based on the measurement at the condition below:
Measurement Conditions
Measurement Result
RECOMMENDED LAND PATTERN
PACKAGE INFORMATION
Thermal Resistance
Power Dissipation
1200
1000
Board Dimensions
800
600
400
200
Board Material
Through-hole
0
Copper Ratio
Environment
0
880
25
Power Dissipation
Ambient Temperature (°C)
50
On Board
θja=(125−25°C)/0.88W=114°C/W
Top side : Approx. 50% , Back side : Approx. 50%
Standard Land Pattern
75 85
Mounting on Board (Wind velocity=0m/s)
Glass cloth epoxy plactic (Double sided)
0.35
880mW
100
(Topt=25°C,Tjmax=125°C)
40mm × 40mm × 1.6mm
Standard Land Pattern
0.5 0.5
φ0.54mm × 30pcs
125
1.60
0.25
150
(Unit: mm)
D
) depends on conditions of mounting on board.
Measurement Board Pattern
IC Mount Area Unit : mm
40
PE-PLP1820-6-0611