NR110K Datasheet, PDF (9/13 Pages) Sanken electric – Light Load High Efficiency, 31V, Buck Regulator

Light Load High Efficiency, 31V, Buck Regulator
NR110K series
Dec./24/2015
PCB Layout & Recommended Land Pattern
(1)Each ground of all components is connected as close as possible to the Pin No.1 at one point.
(2) To help heat dissipation, connect a large copper plane to exposed pad on the back side of the package.
The copper plane is required for GND
Front Side: Component Side (double sided board)
NOTES:
Real size of the PCB is 40mm×40mm
(Demo-board circuit-diagram)
Back Side: GND Side (double sided board)
Z1
C1, C2: 10μF / 35V
C3:0.1μF
C4, C5: 22μF / 16V
C6:Option
C7: 0.1μF
C9: Open
C10: Mount R9
C11:Option
C12:Option
R1:510kΩ
R2:Option
R3:22Ω
R4:18kΩ
R5:2.7kΩ (Vo=5.0V)
R6:3.9kΩ
R7:Open
R8:Option
R9:Adjust
R10:Option
L1: 10μH
D1:SJPW-T4(Sanken)
D2:Option
Z1：NR110K
Rev.1.5
SANKEN ELECTRIC CO., LTD.
9
http://www.sanken-ele.co.jp