ZSR datasheet(2/18 Pages) DIODES

2 / 18 page

ZSR SERIES

Issue 9 - October 2007

www.zetex.com

Recommended operating conditions

Absolute maximum rating

Input voltage

20V

Output current (IO)

200mA

Operating temperature

-55 to 125°C

Storage temperature

-65 to 150°C

Power Dissipation (Tamb=25°C)

SOT223

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

Vin Input Voltage

ZSR300

ZSR330

5.3

ZSR500

ZSR800

ZSR1000

ZSR1200

Notes:

•

The maximum operating input voltage and

output current of the device will be

governed

the

maximum

power

dissipation

the

selected

package.

Maximum package power dissipation is

specified at 25°C and must be linearly

derated to zero at Tamb=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.

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