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LDS8846 Datasheet(PDF) 2 Page - IXYS Corporation

Part # LDS8846
Description  4-Channel Ultra Low Dropout No Noise LED Driver
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Manufacturer  IXYS [IXYS Corporation]
Direct Link  http://www.ixys.com
Logo IXYS - IXYS Corporation

LDS8846 Datasheet(HTML) 2 Page - IXYS Corporation

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LDS8846
© 2009 IXYS Corp.
2
Doc. No. 8846DS, Rev. N1.6
Characteristics subject to change without notice
ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VIN, LEDx voltage
-0.3 to 6
V
VOUT voltage
-0.3 to 6
V
EN, CTRL0, CTRL1, CTRL2 voltage
VIN + 0.7V
V
Storage Temperature Range
-65 to +150
°C
Junction Temperature Range
-40 to +125
°C
Soldering Temperature (10s)
300
°C
ESD protection HBM
2
kV
NOTE: Stresses listed above may cause permanent damage to thje device. Functional operation of the device at these or any other conditio ns
beyond those indicated in the “Recommended Operating Conditions” is not impiled. Exposure to abslute maximum rating conditions for
extended periods may remain possibility to affect device reliability.
RECOMMENDED OPERATING CONDITIONS
Parameter
Rating
Unit
VIN
2.7 to 5.5
V
Ambient Temperature Range
-40 to +85
°C
ELECTRICAL OPERATING CHARACTERISTICS
(Over recommended operating conditions unless specified otherwise) VIN = 3.6V, EN = High, TAMB = 25°C
Name
Conditions
Min
Typ
Max
Units
Quiescent Current
ILED = 20mA per channel
1.3
1.5
mA
Shutdown Current
EN = 0V
0.1
1
µA
RSET = 24k
20
LED Current
RSET = 96k
5
mA
LED Current Setting Range
2.7 < VIN < 5.5V
2
30
mA
LED Current Accuracy
To set value
-8
3
+8
%
LED Channel Matching
(ILED MAX - ILED MIN) / (ILED
MAX + ILED MIN)
-5
3
+5
%
Current Sink Dropout Voltage*
20
30
mV
Short Circuit Output Current Limit
VOUT = 0V
22
25
mA
High
Input Voltage = VIN
1
Leakage Current
Low
Input Voltage = 0
-1
µA
High
1.3
EN, CTRL0,
CTRL1,
CTRL2 pins
Logic Level
Threshold
Low
0.4
V
PWM frequency
100
100000
Hz
PWM duty cycle
1
100
%
Thermal Shutdown
150
Thermal Hysteresis
20
°C
Under Voltage Lockout (UVLO)
Threshold
2.4
V
*) Voltage drop at led pin, at which LED current falls 10% below set value


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