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LDS8680 Datasheet(PDF) 2 Page - IXYS Corporation

Part No. LDS8680
Description  800 mA White LED Driver for Photo Flash
Download  12 Pages
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Maker  IXYS [IXYS Corporation]
Homepage  http://www.ixys.com
Logo IXYS - IXYS Corporation

LDS8680 Datasheet(HTML) 2 Page - IXYS Corporation

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LDS8680
© 2009 IXYS Corp.
2
Doc. No. 8680_DS, Rev. N1.0
Characteristics subject to change without notice
ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VIN, LEDx, C1± voltage
6
V
VOUT voltage
6
V
EN/SET voltage
VIN + 0.7V
V
Storage Temperature Range
-65 to +160
°C
Junction Temperature Range
-40 to +125
°C
Soldering Temperature
300
°C
RECOMMENDED OPERATING CONDITIONS
Parameter
Rating
Unit
VIN
2.7 to 5.5
V
Ambient Temperature Range
-40 to +85
°C
Typical application circuit with external components is shown on page 1.
ELECTRICAL OPERATING CHARACTERISTICS
(Over recommended operating conditions unless specified otherwise) VIN = 3.6V, C1 = 2.2 µF, Cin = Cout = 1 µF, EN = High, TAMB = 25°C
Name
Conditions
Min
Typ
Max
Units
Standby Current
0.6
mA
Shutdown Current
VEN = 0V
0.5
µA
LED Current Accuracy
1mA
≤I
LED ≤400 mA
±8
%
LED Channel Matching
(ILED - ILEDAVG) / ILEDAVG
±8
%
1-x mode
0.5
Output Resistance (open loop)
1
2-x mode
1.7
Ω
Charge Pump Frequency
1
MHz
Output short circuit Current Limit
VOUT < 0.5V
2
A
Input Current Limit
2
A
1-x to 2-x
Transition Thresholds at any LED pin
At 200 mA
150
mV
Transition Filter Delay
800
µs
Input current
EN = VIN = 5.5 V
1
µA
High
1.4
EN/SET
Pin
Logic Level
Low
0.4
V
Thermal Shutdown
1
160
Thermal Hysteresis
1
25
°C
Under Voltage Lockout (UVLO)
Threshold
2.3
V
Output Over Voltage protection
5.6
5.9
V
Flash LED Safety Timer
250
ms
Note:
1. Sample test only
2. Measusured from Flash LED ON command to ILED reaches 90% of regulated level


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