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ZXSC380
Absolute maximum ratings
Supply voltage (V CC )
Output voltage (V OUT )
Supply current
Output switch current
Power dissipation SOT23-3
Power dissipation die
Operating temperature range
Storage temperature range
-0.6V to 10V
-0.6V to 20V
20mA
200mA
450mW
1W
0°C to +85°C
-55°C to +150°C
Electrical characteristics
Measured at T amb = 25°C, L = 100 H and V CC = 1.5V unless otherwise specified.
Parameter
Conditions
Min.
Limits
Typ.
Max.
Units
Supply voltage operating range
Minimum supply start-up voltage
0.8
0.9
6
1.0
V
V
Switch current
Switch saturation voltage
Mean LED current
Efficiency
Operating frequency
Discharge pulse width
V OUT = 1.0V
IV OUT = 50mA
V LED = 3.5V
V LED = 3.5V
V LED = 3.5V
65
1.4
80
0.3
18
75
160
2.2
95
0.5
3.0
mA
V
mA
%
kHz
s
Pin descriptions
V CC 1
3 GND
V OUT 2
Top view
Pin descriptions
Pin No.
1
2
3
Name
V CC
V OUT
GND
Description
Supply voltage, generally Alkaline, NiMH or NiCd single cell
Switch output external inductor/LED
Ground
Ordering information
Device
ZXSC380FH
Issue 3 - September 2007
? Zetex Semiconductors plc 2007
Package
SOT23
2
Part Mark
380
www.zetex.com
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