SM8120 Datasheet, PDF (12/14 Pages) Nippon Precision Circuits Inc – White LED Driver IC

SM8120A
4 LEDs
L
22µH
VIN
CIN
4.7µF
SBD
SW
VSS
FB
VDD
CE
COUT
2.2µF
LED
ILED
R
C_IN : 2012Y5VIC475Z (TDK)
C_OUT :16MCM225MA (Nippon Chemi-con)
L : LQH32CN220K21 (Murata)
SBD : RB551V-30 (ROHM)
LED : NSCW455 (NICHIA)
100
95
90
85
80
75
70
65
60
55
50
0
VIN = 4.5V
VIN = 3.6V
VIN = 2.4V
5
10
15
20
ILED [mA]
100
95
90
ILED = 15mA
85
ILED = 5mA
ILED = 2mA
80
75
70
65
60
55
50
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
25
20
R = 25Ω
15
R = 33Ω
10
R = 50Ω
5
R = 100Ω
R = 250Ω
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN [V]
NIPPON PRECISION CIRCUITS INC.—12