Datasheet AL3644 (Diodes) - 7
| Manufacturer | Diodes |
| Description | Dual 1.5A Current Source Camera Flash LED Driver |
| Pages / Page | 23 / 7 — AL3644. Typical Performance Characteristics. Switching Frequency. vs. … |
| File Format / Size | PDF / 805 Kb |
| Document Language | English |
AL3644. Typical Performance Characteristics. Switching Frequency. vs. Temperature. NTC Current vs. . Temperature. W E
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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.)
Switching Frequency vs. Temperature NTC Current vs . Temperature
4.5 60 4.4 58 4.3 56 z) 4.2 54 (MH
T
A) 4.1 cy 52 (m
C
n t e f =4MHz n SW u 50
U
4.0 q rre re u
D
F 3.9 C 48 g C
O
n T 3.8 46 N
R
chiti
P
3.7 44 Sw 3.6 42
W E
3.5 40 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120
N
Ambient Temperature (oC) Ambient Temperature (oC)
Inductor Current Limit 1 vs. Temperature Inductor Current Limit 2 vs. Temperature
2000 3000 2980 1980 2960 1960 2940 2920 1940 2900 (mA) (mA) t t 1920 2880 mi mi i i L L 2860 t 1900 t n n 2840 rre rre 1880 2820 u u C C 2800 r r e 1860 e w 2780 w o o L L 1840 2760 2740 1820 2720 1800 2700 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Ambient Temperature (oC) Ambient Temperature (oC)
Standby Supply Current vs. Temperature Quiescent Supply Current vs. Temperature
5.0 0.80 4.5 0.75 4.0 3.5 0.70 Device Not Switching 3.0 A) 2.5 m 0.65 ( (mA) I SB 2.0 V =1.8V I Q HWEN 0.60 1.5 1.0 0.55 0.5 0.0 0.50 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Ambient Temperature (oC) Ambient Temperature (oC) AL3644 7 of 23 July 2019 Document number: DS41558 Rev. 1 - 2
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© Diodes Incorporated
(continued) (@TA = +25°C, VIN = 3.6V, VHWEN=VIN, CIN=2×10mF, COUT=2×10mF and L=1mH, unless otherwise specified.)
Switching Frequency vs. Temperature NTC Current vs . Temperature
4.5 60 4.4 58 4.3 56 z) 4.2 54 (MH
T
A) 4.1 cy 52 (m
C
n t e f =4MHz n SW u 50
U
4.0 q rre re u
D
F 3.9 C 48 g C
O
n T 3.8 46 N
R
chiti
P
3.7 44 Sw 3.6 42
W E
3.5 40 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120
N
Ambient Temperature (oC) Ambient Temperature (oC)
Inductor Current Limit 1 vs. Temperature Inductor Current Limit 2 vs. Temperature
2000 3000 2980 1980 2960 1960 2940 2920 1940 2900 (mA) (mA) t t 1920 2880 mi mi i i L L 2860 t 1900 t n n 2840 rre rre 1880 2820 u u C C 2800 r r e 1860 e w 2780 w o o L L 1840 2760 2740 1820 2720 1800 2700 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Ambient Temperature (oC) Ambient Temperature (oC)
Standby Supply Current vs. Temperature Quiescent Supply Current vs. Temperature
5.0 0.80 4.5 0.75 4.0 3.5 0.70 Device Not Switching 3.0 A) 2.5 m 0.65 ( (mA) I SB 2.0 V =1.8V I Q HWEN 0.60 1.5 1.0 0.55 0.5 0.0 0.50 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 Ambient Temperature (oC) Ambient Temperature (oC) AL3644 7 of 23 July 2019 Document number: DS41558 Rev. 1 - 2
www.diodes.com
© Diodes Incorporated
