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SP1937S25RG Datasheet(PDF) 4 Page - SYNC POWER Crop.

Part # SP1937S25RG
Description  DC-DC Step-Up Converter for White LED
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Manufacturer  SYNC-POWER [SYNC POWER Crop.]
Direct Link  http://www.syncpower.com
Logo SYNC-POWER - SYNC POWER Crop.

SP1937S25RG Datasheet(HTML) 4 Page - SYNC POWER Crop.

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2007/07/10
Ver.3
Page 4
SP1937
DC-DC Step-Up Converter for White LED
ELECTRICAL CHARACTERISTICS
(TA=25 , V
IN
=3V, VSHDN=3V, Unless otherwise specified)
Parameter
Conditions
Min.
Typ.
Max.
Unit
Operating Voltage
2.5
20.0
V
Feedback Voltage
ISW=100mA, Duty Cycle = 66%
86
110
mV
FB Pin Bias Current
150
nA
2.8
3.5
mA
Supply Current
VSHDN = 0V
0.1
1.0
μA
Switching Frequency
0.8
1.2
1.6
MHz
Maximum Duty Cycle
85
%
Switch Current Limit
320
mA
Switch Leakage Current
VSW= 5V
0.01
5
μA
Switch Vcesat
ISW = 200mA
150
mV
SHDN Voltage High
1.5
V
SHDN Voltage Low
0.4
V
SHDN Pin Bias Current
90
uA


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