ZSR SERIES 3.0 to 12 volt fixed positive local voltage regulator Description Features The ZSR Series three terminal fixed positive Output current up to 200mA voltage regulators feature internal circuit Tight initial tolerance of 2.5% current limit and thermal shutdown making the devices difficult to destroy. The devices are Low 600 A quiescent current available in a high power surface mount -55 to 125C temperature range package, ideal for applications where space saving is important. The devices are suited to No external components local voltage regulation applications, where Internal thermal shutdown problems could be encountered with distributed single source regulation, as well as more Internal short circuit current limit general voltage regulation applications. High power SOT223 package The ZSR Series show performance characteristics superior to other local voltage regulators. The initial output voltage is SOT223 Package suffix - G maintained to within 2.5% with a quiescent current of typically 350 A. Output voltage 1 OUT change, with input voltage and load current, is much lower than competitive devices. The ZSR devices are completely stable with no external 2 4 GND GND components. IN 3 Top view Top view Connect pin 4 to pin 2 or leave pin 4 electrically isolated SOT223 ordering information Order reference Voltage Part Status Reel size Tape width Quantity marking (inches) (mm) per reel ZSR300GTA 3.0V ZSR300 Active 7 12 1000 ZSR330GTA 3.3V ZSR330 Active 7 12 1000 ZSR500GTA 5.0V ZSR500 Active 7 12 1000 ZSR800GTA 8.0V ZSR800 Active 7 12 1000 ZSR1000GTA 10.0V ZSR100 Active 7 12 1000 ZSR1200GTA 12.0V ZSR1200 Active 7 12 1000 Issue 9 - October 2007 1 www.zetex.com Zetex Semiconductors plc 2007ZSR SERIES Absolute maximum rating Input voltage 20V Power Dissipation (T =25C) amb Output current (I) 200mA SOT223 2W O Operating temperature -55 to 125C Maximum power dissipation for the SOT223 is calculated assuming that the device is mounted on a PCB measuring Storage temperature -65 to 150C 2 inches square. Recommended operating conditions Parameter Products Min Max Units ZSR300 5 20 V ZSR330 5.3 20 V V Input Voltage ZSR500 7 20 V in ZSR800 10 20 V ZSR1000 12 20 V ZSR1200 14 20 V Notes: The maximum operating input voltage and The shut down feature of the device operates output current of the device will be if its temperature exceeds its design limit as governed by the maximum power might occur during external faults, short dissipation of the selected package. circuits etc. If the regulator is supplied from Maximum package power dissipation is an inductive source then a large voltage specified at 25C and must be linearly transient, on the regulator input, can result derated to zero at T =125C. should the shut down circuit operate. It is amb advised that a capacitor (1 F or greater) The following data represents pulse test should be applied across the regulator input conditions with junction temperatures as to ensure that the maximum voltage rating of indicated at the initiation of the test. the device is not exceeded under shutdown Continuous operation of the devices with conditions. the stated conditions might exceed the power dissipation limits of the chosen package. Issue 9 - October 2007 2 www.zetex.com Zetex Semiconductors plc 2007