Diodes ZSR SERIES - Manual (Page 2)

ZSR SERIES
Issue 9 - October 2007 2 www.zetex.com
© Zetex Semiconductors plc 2007
Recommended operating conditions
Absolute maximum rating
Input voltage 20V
Output current (I
O
) 200mA
Operating temperature -55 to 125°C
Storage temperature -65 to 150°C
Power Dissipation (T
amb
=25°C)
SOT223 2W
Maximum power dissipation for the SOT223 is calculated
assuming that the device is mounted on a PCB measuring
2 inches square.
Parameter Products Min Max Units
V
in
Input Voltage
ZSR300 5 20 V
ZSR330 5.3 20 V
ZSR500 7 20 V
ZSR800 10 20 V
ZSR1000 12 20 V
ZSR1200 14 20 V
Notes:
• The maximum operating input voltage and
output current of the device will be
governed by the maximum power
dissipation of the selected package.
Maximum package power dissipation is
specified at 25°C and must be linearly
derated to zero at T
amb
=125°C.
• The following data represents pulse test
conditions with junction temperatures as
indicated at the initiation of the test.
Continuous operation of the devices with
the stated conditions might exceed the
power dissipation limits of the chosen
package.
• The shut down feature of the device operates
if its temperature exceeds its design limit as
might occur during external faults, short
circuits etc. If the regulator is supplied from
an inductive source then a large voltage
transient, on the regulator input, can result
should the shut down circuit operate. It is
advised that a capacitor (1
␮F or greater)
should be applied across the regulator input
to ensure that the maximum voltage rating of
the device is not exceeded under shutdown
conditions.