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KB4312 Datasheet(PDF) 4 Page - Kingbor Technology Co

Part # KB4312
Description  Tiny Package, High Performance, Constant Current Switching Regulator for White LED
PDF  9 Pages
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Manufacturer  KINGBOR [Kingbor Technology Co]
Direct Link  http://www.kingbor.com
Logo KINGBOR - Kingbor Technology Co

KB4312 Datasheet(HTML) 4 Page - Kingbor Technology Co

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KB4312
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current
SHDN Pin Bias Current
Switching Frequency
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50 C
25 C
100 C
400
350
300
250
200
150
100
50
0
SHDN = 10V
SHDN = 3.6V
SHDN = 3V
SHDN = 2.7V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
02
4
68
– 50
– 25
0
25
50
75
100
–50
–25
0
25
50
75
100
VIN (V)
TEMPERATURE ( C)
TEMPERATURE ( C)
60
Feedback Bias Current
85
Efficiency vs Temperature
VIN = 3.6V
3 LEDs
350
Current Limit vs Duty Cycle
50
40
30
20
10
84
83
82
81
ILED = 20mA
ILED = 15mA
ILED = 10mA
300
250
200
150
100
50
0
–50
–25
0
25
50
75
100
80
–50
050
100
0
0
20
40
60
80
100
TEMPERATURE ( C)
TEMPERATURE ( C)
DUTY CYCLE (%)



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