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CAT37 Datasheet(PDF) 3 Page - ON Semiconductor

Part # CAT37
Description  CMOS White LED Driver Boost Converter
PDF  11 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CAT37 Datasheet(HTML) 3 Page - ON Semiconductor

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CAT37
http://onsemi.com
3
Table 4. ELECTRICAL OPERATING CHARACTERISTICS
(Over recommended operating conditions unless otherwise specified. TA = 25°C, VIN = 3 V and VSHDN = 3 V.)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Input Voltage Range
2.5
7
V
IQ
Quiescent Current
VFB = 0.2 V
0.5
0.7
mA
ISD
Shutdown Current
VSHDN = 0 V
0.05
1
mA
VFB
FB Pin Voltage
4 LEDs at 15 mA
85
95
105
mV
IFB
FB Pin Leakage Current
1
2
mA
Shutdown High Threshold
0.85
V
Shutdown Low Threshold
0.25
V
ISHDN
Shutdown Pin Current
1
nA
fSW
Boost Converter Frequency
0.8
1.2
1.6
MHz
DC
Maximum Switch Duty Cycle
90
95
%
ISWL
Switch Current Limit
400
550
780
mA
Switch Saturation Voltage
ISW = 300 mA
150
200
mV
Switch Leakage Current
Switch Off, VSW = 5 V
0.01
5
mA
Efficiency
Figure 1 with specified components
83
%



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