R1218K021A RICOH [RICOH electronics devices division], R1218K021A Datasheet - Page 17

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

POWER DISSIPATION (SOT-23-6)
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
600
500
400
300
200
100
Board Dimensions
0
Board Material
Through-hole
0
Copper Ratio
Environment
420
25
Power Dissipation
Ambient Temperature (°C)
On Board
50
θja=(125−25°C)/0.42W=263°C/W
75 85
Top side : Approx. 50% , Back side : Approx. 50%
Standard Land Pattern
Mounting on Board (Wind velocity=0m/s)
Glass cloth epoxy plactic (Double sided)
100
420mW
0.7 MAX.
40mm × 40mm × 1.6mm
Standard Land Pattern
0.95
125
φ0.5mm × 44pcs
1.9
0.95
150
(Unit: mm)
D
) depends on conditions of mounting on board.
Measurement Board Pattern
IC Mount Area Unit : mm
40
400°C/W
Free Air
250mW
(Topt=25°C,Tjmax=125°C)
PE-SOT-23-6-0611