ZXLD381
Absolute maximum ratings
Supply Voltage (V
Output Voltage (V
Supply Current
)
-0.6V to 10V
-0.6V to 20V
20mA
CC
)
OUT
Output Switch Current
800mA
Power Dissipation SOT23-3
Power Dissipation Die
450mW
1W
Operating Temperature Range
Storage Temperature Range
0°C to +85°C
-55°C to +150°C
Electrical Characteristics
Measured at T
= 25°C, L = 4.7μH and VCC = 1.5V unless otherwise specified.
AMB
Parameter
Conditions
Limits
Typ
Units
Max
Min
Supply Voltage
Operating Range
L = 10μH
L = 10μH
At turn-off
0.9
2.2
V
Minimum Supply
Start-up Voltage
0.8
0.9
V
Switch Current
250
320
100
400
300
mA
mV
Switch Saturation
Voltage
I
= 200mA
OUT
Switch Leakage
Current
V
= 20V
40
40
70
120
70
μA
OUT
Mean LED Current
Efficiency
V
V
= 3.5V
= 3.5V
55
85
mA
%
LED
LED
Operating
Frequency
V
= 3.5V
350
1.5
kHz
LED
Discharge Pulse
Width
0.7
2.5
μs
Issue 1 - April 2008
© Zetex Semiconductors plc 2008
2
www.zetex.com
ZETEX [ ZETEX SEMICONDUCTORS ]
