LM3533 Datasheet, PDF (7/53 Pages) Texas Instruments – Complete Lighting Power Solution for Smartphone Handsets

LM3533
Typical Performance Characteristics V_IN = 3.6V, LEDs are WLEDs part # SML-312WBCW(A), Typical
Application Circuit with L = TDK (VLF302512, 4.7µH, 10µH, 22µH where specified), Schottky = On-Semi (NSR0240V2T1G), T_A =
+25°C unless otherwise specified. Efficiency is given as V_OUT × (I_HVLED1 + I_HVLED2)/(V_IN × I_IN), matching curves are given as
(ΔI_{LED_MAX}/I_{LED_AVE}).
Efficiency vs VIN, Dual String,
L = 22µH, 20mA/string, f_SW = 500kHz
Top to Bottom: 2x4, 2x5, 2x6, 2x7, 2x8, 2x9 (LEDs)
Efficiency vs VIN, Dual String
L = 22µH, 20mA/string, f_SW = 1MHz
Top to Bottom: 2x4, 2x5, 2x6, 2x7, 2x8, 2x9, 2x10 (LEDs)
30135747
Efficiency vs VIN, Single String,
L = 22µH, 20mA/string, f_SW = 500kHz
Top to Bottom:1x4, 1x5, 1x6, 1x7, 1x8, 1x9, 1x10 (LEDs)
30135748
Efficiency vs VIN, Single String
L = 22µH, 20mA/string, f_SW = 1MHz
Top to Bottom:1x4, 1x5, 1x6, 1x7, 1x8, 1x9, 1x10 (LEDs)
30135749
30135750
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