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LM3644TTYFFR Scheda tecnica(PDF) 8 Page - Texas Instruments

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Il numero della parte LM3644TTYFFR
Spiegazioni elettronici  Dual 1.5A Current Source Camera Flash LED Driver
Download  41 Pages
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

LM3644TTYFFR Scheda tecnica(HTML) 8 Page - Texas Instruments

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VIN (V)
2.5
3
3.5
4
4.5
5
5.5
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1
1.01
1.02
1.03
1.04
1.05
1.06
1.07
D023
TA = -40GC
TA = +25GC
TA = +85GC
VIN (V)
2.5
3
3.5
4
4.5
5
5.5
0.68
0.69
0.7
0.71
0.72
0.73
0.74
0.75
0.76
0.77
0.78
D024
LED1, TA = -40GC
LED2, TA = -40GC
LED1, TA = +25GC
LED2, TA = +25GC
LED1, TA = +85GC
LED2, TA = +85GC
VIN (V)
2.5
3
3.5
4
4.5
5
5.5
1.4
1.42
1.44
1.46
1.48
1.5
1.52
1.54
1.56
1.58
1.6
1.62
D022
TA = -40GC
TA = +25GC
TA = +85GC
VIN (V)
2.5
3
3.5
4
4.5
5
5.5
1.4
1.42
1.44
1.46
1.48
1.5
1.52
1.54
1.56
1.58
1.6
D021
TA = -40GC
TA = +25GC
TA = +85GC
VIN (V)
2.5
3
3.5
4
4.5
5
5.5
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
D005
BRC = 0
BRC = 7
BRC = 15
BRC = 23
BRC = 31
BRC = 39
BRC = 47
BRC = 55
BRC = 63
VIN (V)
2.5
3
3.5
4
4.5
5
5.5
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
D006
BRC = 71
BRC = 79
BRC = 87
BRC = 95
BRC = 103
BRC = 111
BRC = 119
BRC = 127
LM3644, LM3644TT
SNVSA52D – AUGUST 2014 – REVISED SEPTEMBER 2015
www.ti.com
Typical Characteristics (continued)
Ambient temperature is 25°C, input voltage is 3.6 V, HWEN = VIN, CIN = COUT = 2 × 10 µF and L = 1 µH, unless otherwise
noted .
Figure 10. LED2 Current vs Input Voltage
Figure 11. LED2 Current vs Input Voltage
ILED = 1.5 A
ƒSW = 2 MHz
Flash
ILED = 1.5 A
ƒSW = 4 MHz
Flash
Figure 12. LED1/2 Current vs Input Voltage
Figure 13. LED1/2 Current vs Input Voltage
ILED = 1 A
ƒSW = 2 MHz
Flash
ILED = 730 mA
ƒSW = 2 MHz
Flash
Figure 14. LED1/2 Current vs Input Voltage
Figure 15. LED1 and LED2 Current vs Input Voltage
8
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