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SGM3138 датащи(PDF) 4 Page - SG Micro Corp

номер детали SGM3138
подробное описание детали  Low Dropout Current Source
PDF  11 Pages
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производитель  SGMICRO [SG Micro Corp]
домашняя страница  http://www.sg-micro.com
Logo SGMICRO - SG Micro Corp

SGM3138 датащи(HTML) 4 Page - SG Micro Corp

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6-Channel Charge Pump White LED
SGM3138
Driver with Low Dropout Current Source
4
SG Micro Corp
www.sg-micro.com
ELECTRICAL CHARACTERISTICS
(VIN = 3.6V, EN/SET = VIN, TA = +25
℃, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY VOULTAGE AND CURRENT
Input Voltage Range
VIN
2.7
5.5
V
IQ
VIN = 4.2V, 1× Mode, ILEDx = 1.25mA
210
μA
Quiescent Power Supply Current
IQ
IOUT = 0mA, 1.5× Mode
2
mA
Shutdown Supply Current
ISHDN
EN/SET = GND
0.1
1
μA
CHARGE PUMP STAGE
Over-Voltage Limit
VOUT
LEDx unconnected, VIN = 4.2V
5.8
V
Start-Up Time
COUT = 1μF, ILEDx ≥ 0.9 × ILEDx-set
235
μs
Soft-Start Duration
190
μs
Switching Frequency
f
0.6
1
1.4
MHz
Efficiency
η
VIN = 3.45V, VLEDx = 3V
85
%
Shutdown Temperature
Temperature rising
150
℃
Shutdown Temperature Hysteresis
15
℃
Input Current Limit
EN/SET = 1
300
mA
CURRENT SINKS
Recommended Maximum Current per
Current Sink
ILEDx
3.2V ≤ VIN ≤ 5.5V
18
20
22.5
mA
Current Matching between Any Two Outputs
VLEDx = 3.2V, ILEDx = 20mA
-5
1
5
%
Line Regulation
3.3V < VIN < 5.5V, VLEDx = 3.2V, EN/SET = 1
3
%
Voltage at LEDX to GND
VSOURCE
VIN = 4.2V, EN/SET = 1
400
mV
EN/SET LOGIC
Low Time for Shutdown
tSHDN
3
ms
Low Time for Dimming
tLO
0.5
500
µs
High Time for Dimming
tHI
0.5
µs
Logic-High Voltage
VIH
1.2
V
Threshold
Logic-Low Voltage
VIL
0.6
V



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