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FAN5616 Datasheet, PDF (6/14 Pages) Fairchild Semiconductor – High-Efficiency, Constant-Current LED Driver with Adaptive Charge Pump
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Typical Performance Characteristics
Unless otherwise noted, VIN = 3.6V, TA = 25°C, CIN = 4.7µF, COUT = 1µF, CAP1 = CAP2 = 0.1µF, FAN5616 driving three
LEDs with VF = 3.5V at 20mA.
100
90
80
70
60
50
40
30
20
10
0
2.2
Efficiency vs. Battery Voltage
ILED = 15mA
ILED = 20mA
ILED = 10mA
ILED = 5mA
2.7
3.2
3.7
4.2
4.7
5.2
Battery Voltage (V)
LED Current vs. Battery Voltage
21.5
21.0
20.5
20.0
85°C
-40°C
19.5 25°C
19.0
18.5
18.0
2.2
3
3.5
4
4.5
5
5.5
Battery Voltage (V)
Minimum Cathode Voltage vs. LED Current
0.25
VIN = 5.5V
0.2
0.15
0.1
VIN = 2.7V
VIN = 3.6V
0.05
0
2
4
6
8 10 12 14 16 18 20
LED Current (mA)
Output Voltage vs. Output Current
4
ILED = 5mA
3.5
VIN = 5.5V
3
2.5
VIN = 3.6V
2
1.5
1
VIN = 2.7V
0.5
0
0
100
200
300
400
500
Output Current (mA)
Quiescent Current vs. Battery Voltage
3
ILED = 5mA
2.5
2
1.5
1
0.5
0
2.7
3.2
3.7
4.2
4.7
5.2
Battery Voltage (V)
LED Current vs. Duty Cycle
18
VIN = 3.6V
16
FPWM = 1kHz
14
FPWM = 10kHz
12
10
8
FPWM = 32kHz
6
4
2
FPWM = 50kHz
0
0
20
40
60
80
100
Duty Cycle (%)
6
FAN5616 Rev. 1.0.0
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