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SP6685 Datasheet(PDF) 7 Page - Sipex Corporation

Part # SP6685
Description  700mA Buck/Boost Charge Pump LED Driver
PDF  16 Pages
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6685 Datasheet(HTML) 7 Page - Sipex Corporation

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7
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
© 2006 Sipex Corporation
TYPICAL PERFORMANCE CHARACTERISTICS
Output Current Vs Supply Vol
0
50
100
150
200
250
300
350
400
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V
Flash 300mA Vf = 3.85
Torch 150mA Vf = 3.45
Efficiency Vs Supply Vol
40
50
60
70
80
90
100
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V
Flash 300m
Vf = 3.85V
Torch 150mA
Vf = 3.45V
Battery Current Vs Supply Vo
0
100
200
300
400
500
600
700
800
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V
Flash 300mA Vf = 3.8
Torch 150mA Vf = 3.4
D1 = AOT 3228HPW0303B LED, Rsense = 0.33ohms,
R
SET = 162K, CIN = 4.7μF, CFC = 0.47μF, COUT = 1μF
Figure 17.
Figure 18.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Efficiency Vs Supply Vol
40
50
60
70
80
90
100
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V
Flash Mode
700mA Vf =
3.45V
Torch Mode
200mA Vf = 3.
Output Current Vs Supply Vol
0
100
200
300
400
500
600
700
800
900
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V
Flash 700mA Vf = 3
Torch 200mA Vf = 3.
D1 = Luxeon LXCL-PWFI LED, Rsense = 0.22ohms,
R
SET = 88.7K, CIN = 4.7μF, CFC = 1.0μF, COUT = 1.0μF
Battery Current Vs Supply Vo
0
200
400
600
800
1000
1200
1400
1600
1800
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V
Flash 700mA Vf = 3.
Torch 200mA Vf = 3.
Note: diode, resistor, and capacitor settings apply to
figures 13, 14, and 15.
Note: diode, resistor, and capacitor settings apply to
figures 16, 17, and 18.



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