Datasheet AL3644 (Diodes) - 9

AL3644 Typical Performance Characteristics
(continued) (@TA = +25°C, VIN = 3.6V, VHWEN=VIN, CIN=2×10mF, COUT=2×10mF and L=1mH, unless otherwise specified.)
LED2 Torch Current vs. Input Voltage LED Torch Current vs. Input Voltage
100 200 95 90 195 85 80 75 190 70 65 185
T
(mA) 60 (mA) 55
C
rch 50 180 o rch T o
U
45 T 2 BRC=0 40 D
D
D E 175 E 35 BRC=7 I L I L BRC=15
O
30 BRC=23 25 170
R
BRC=31 I =180mA 20 LED
P
BRC=39 15 BRC=47 165 f =2MHz SW 10 BRC=55 f =4MHz
W
5 SW BRC=63 0 160
E
2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 5.2 5.5 2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 5.2 5.5
N
V (V) IN V (V) IN
LED Efficiency vs. Input Voltage
100 I =I =180mA 95 LED1 LED2 f =2MHz 90 SW f =4MHz SW 85 ) 80 (% 75 cy n 70 e ciif 65 Ef 60 ED L 55 50 45 40 2.5 2.8 3.1 3.4 3.7 4.0 4.3 4.6 4.9 5.2 5.5 V (V) IN AL3644 9 of 23 July 2019 Document number: DS41558 Rev. 1 - 2
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