SM8134A Datasheet, PDF (6/19 Pages) Nippon Precision Circuits Inc – White LED Driver IC

V_OUT EFFICIENCY
SM8134A
100
90
VF = 3.2V
80
VF = 3.4V
VF = 3.6V
VF=3.8V
70
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 × 4pcs, I_{LED1 to 4} = 20mA,
Flash LED × 1pc, I_LED5 = 0mA,
I_OUT = 80mA
100
90
VF = 3.2V
80
VF = 3.4V
VF = 3.6V
VF=3.8V
70
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 4} = 16mA,
Flash LED × 1pc, I_LED5 = 0mA,
I_OUT = 48mA
SEIKO NPC CORPORATION —6