SM8133B Datasheet, PDF (8/20 Pages) Nippon Precision Circuits Inc – White LED Driver IC

V_OUT EFFICIENCY
SM8133B
100
90
80
VF = 3.2V
VF = 3.4V
VF = 3.6V
70
VF = 3.8V
60
50
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
VIN [V]
Efficiency of P_IN vs. P_OUT
Backlight LED × 6pcs, I_{LED1 to 6} = 20mA,
Flash LED × 1pc, I_LED7 = 0mA,
I_OUT = 120mA, I_LDO = 0mA
100
90
80 ^{VF = 3.2V}
VF = 3.4V
VF = 3.6V
70
VF = 3.8V
60
50
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
VIN [V]
Efficiency of P_IN vs. P_OUT
Backlight LED × 3pcs, I_{LED1 to 6} = 15mA,
Flash LED × 1pc, I_LED7 = 0mA,
I_OUT = 45mA, I_LDO = 0mA
NIPPON PRECISION CIRCUITS INC.—8