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ZXLD1321
Absolute maximum ratings
(Voltages relative to GND unless otherwise stated)
Operating temperature (top)
Storage temperature (Tst)
Junction temperature (Tj)
Package power dissipation (Ptot)
DFN-14 with exposed pad: 4mmx3mm, 0.5mm Pitch
DC-DC converter
-40 to 125 ° C
-55 to 150 ° C
-40 to 150 ° C
1.5W at Tamb = 70 ° C
Supply voltage (VIN)
ADJ
CFB
ISENSE
TADJ
BIAS
High-side current monitor
Monitor supply voltage (M_VIN)
Continuous sense voltage
(M_VIN – M_LOAD)
Switching NPN transistor
Collector-Base voltage (V CBO )
Collector-Emitter voltage (V CEO )
Peak pulse current (I CM )
Continuous Collector current (I C )
-0.3V to +12V
-0.3V to The lower of (+5.0V) or (VIN + 0.3V)
-0.3V to The lower of (+5.0V) or (VIN + 0.3V)
-0.3V to The lower of (+5.0V) or (VIN + 0.3V)
-0.3V to The lower of (+5.0V) or (VIN + 0.3V)
-0.3V to The lower of (+5.0V) or (VIN + 0.3V)
-0.3V to +18V
-0.3V to +5V
18V
18V
3A (Pulse width = 300μs. Duty cycle<=2%)
2A
These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure. Operation at the
absolute maximum ratings for extended periods may reduce device reliability.
Thermal resistance
Junction to case (R
DFN-14
JC )
Nominal value
26.3°C/W
Issue 1 - January 2008
? Zetex Semiconductors plc 2008
3
www.zetex.com
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