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ZXLD381 Datasheet(PDF) 2 Page - Zetex Semiconductors

Part # ZXLD381
Description  Single or Multi Cell LED Driver Solution
PDF  8 Pages
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Manufacturer  ZETEX [Zetex Semiconductors]
Direct Link  http://www.diodes.com/
Logo ZETEX - Zetex Semiconductors

ZXLD381 Datasheet(HTML) 2 Page - Zetex Semiconductors

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ZXLD381
Issue 1 - April 2008
2
www.zetex.com
© Zetex Semiconductors plc 2008
Absolute maximum ratings
Supply Voltage (VCC)
-0.6V to 10V
Output Voltage (VOUT)
-0.6V to 20V
Supply Current
20mA
Output Switch Current
800mA
Power Dissipation SOT23-3
450mW
Power Dissipation Die
1W
Operating Temperature Range
0°C to +85°C
Storage Temperature Range
-55°C to +150°C
Electrical Characteristics
Measured at TAMB = 25°C, L = 4.7μH and VCC = 1.5V unless otherwise specified.
Parameter
Conditions
Limits
Units
Min
Typ
Max
Supply Voltage
Operating Range
L = 10
μH0.9
2.2
V
Minimum Supply
Start-up Voltage
L = 10
μH0.8
0.9
V
Switch Current
At turn-off
250
320
400
mA
Switch Saturation
Voltage
IOUT = 200mA
100
300
mV
Switch Leakage
Current
VOUT = 20V
40
70
120
μA
Mean LED Current
VLED = 3.5V
40
55
70
mA
Efficiency
VLED = 3.5V
85
%
Operating
Frequency
VLED = 3.5V
350
kHz
Discharge Pulse
Width
0.7
1.5
2.5
μs



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