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Issue 9 - October 2007 1 www.zetex.com

ZSR SERIES

3.0 to 12 volt fixed positive local voltage regulator

SOT223 ordering information

Description

The ZSR Series three terminal fixed positive

voltage regulators feature internal circuit

current limit and thermal shutdown making the

devices difficult to destroy. The devices are

available in a high power surface mount

package, ideal for applications where space

saving is important. The devices are suited to

local voltage regulation applications, where

problems could be encountered with distributed

single source regulation, as well as more

general voltage regulation applications.

The ZSR Series show performance

characteristics superior to other local voltage

regulators. The initial output voltage is

maintained to within 2.5% with a quiescent

current of typically 350

␮

A. Output voltage

change, with input voltage and load current, is

much lower than competitive devices. The ZSR

devices are completely stable with no external

components.

Features

• Output current up to 200mA

• Tight initial tolerance of 2.5%

•Low 600␮A quiescent current

• -55 to 125°C temperature range

• No external components

• Internal thermal shutdown

• Internal short circuit current limit

• High power SOT223 package

SOT223 Package suffix - G

Top view –

Connect pin 4 to pin 2 or leave pin 4

electrically isolated

Order reference Voltage Part

marking

Status Reel size

(inches)

Tape width

(mm)

Quantity

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

OUT

GND

Top view

GND

Summary of content (18 pages)

PAGE 1
ZSR SERIES 3.0 to 12 volt fixed positive local voltage regulator Description Features The ZSR Series three terminal fixed positive voltage regulators feature internal circuit current limit and thermal shutdown making the devices difficult to destroy. The devices are available in a high power surface mount package, ideal for applications where space saving is important.
PAGE 2
ZSR SERIES Absolute maximum rating Input voltage 20V Power Dissipation (Tamb=25°C) Output current (IO) 200mA SOT223 Operating temperature -55 to 125°C Storage temperature -65 to 150°C Maximum power dissipation for the SOT223 is calculated assuming that the device is mounted on a PCB measuring 2 inches square. 2W Recommended operating conditions Parameter Vin Input Voltage Products Min Max Units ZSR300 5 20 V ZSR330 5.
PAGE 3
ZSR SERIES Electrical characteristics ZSR300 test conditions (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=7V Symbol VO Parameter Output Voltage Conditions IO=1 to 200mA(␶) Min. 2.92 2.88 Vin=5 to 20V 2.88 Typ. 3.0 Max. 3.08 3.12 Units V V 3.
PAGE 4
ZSR SERIES ZSR500 test conditions (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=9V Symbol VO Parameter Output Voltage Conditions IO=1 to 200mA(␶) Vin=7 to 20V Min. 4.875 4.8 Typ. 5 4.8 Max. 5.126 5.2 Units V V 5.
PAGE 5
ZSR SERIES ZSR1000 test conditions (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=14V Symbol VO Parameter Output Voltage Conditions IO=1 to 200mA(␶) Vin=12 to 20V IO =1 to Min. 9.75 9.6 Typ. 10 9.6 Max. 10.25 10.4 Units V V 10.
PAGE 8
ZSR SERIES Typical characteristics 5.72 ZSR300 3.00 5.70 2.99 5.68 2.98 Output Voltage (V) Output Voltage (V) 3.01 Io= 5mA Vin= Vo+ 4V 2.86 2.85 5.66 Io= 5mA Vin= Vo+ 4V 4.00 3.98 2.84 2.82 3.96 ZSR400 ZSR285 3.94 -50 -25 0 25 50 75 100 125 -50 -25 50 100 125 75 450 9.08 ZSR900 Io= 0 Vin=Vo+ 4V Io= 5mA Quiescent Current (mA) Vin= Vo+ 4V Output Voltage (V) 25 Output Voltage Temperature Coefficient Output Voltage Temperature Coefficient 9.04 9.00 8.96 8.
PAGE 14
ZSR SERIES Obsolete Variants TO92 Package suffix - C IN GND OUT Underside view SOT223 Order information Orderable Voltage Part marking Status Reel size (inches) Tape width (mm) Quantity per reel ZSR285GTA 2.85V ZSR285 Obsolete 7 12 1000 ZSR400GTA 4.0V ZSR400 Obsolete 7 12 1000 ZSR485GTA 4.85V ZSR485 Obsolete 7 12 1000 ZSR520GTA 5.2V ZSR520 Obsolete 7 12 1000 ZSR600GTA 6.0V ZSR600 Obsolete 7 12 1000 ZSR900GTA 9.
PAGE 15
ZSR SERIES ZSR285 test conditions Symbol VO =6.85V Parameter Output Voltage Conditions TE IO=1 to 200mA( ) Vin=4.85 to 20V Min. 2.78 2.735 Typ. 2.85 2.736 Max. 2.92 2.964 Units V V 2.964 V 100mA( ) VO VO IO =1 to Vin=4.85 to 20V IO=1 to 200mA IO=1 to 100mA Vn Vin/ VO VO / T 10 5 2 350 40 25 600 100 100 mV mV mV A A A V rms dB 48 75 62 4.85 4.55 V 0.1 mV/°C O Vin ( ) Quiescent current Quiescent current change IO=1 to 200mA Vin=4.
PAGE 16
ZSR SERIES ZSR485 test conditions (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=8.85V VO Output Voltage 4.792 4.656 TE IO=1 to 200mA( ) Vin=6.8 to 20V 4.85 4.656 4.971 5.044 V V 5.044 V IO =1 to 100mA( ) Line regulation Vin=6.85 to 20V VO Load regulation Ig Vn Vin/ VO Quiescent current 40 mV IO=1 to 200mA 5 25 mV IO=1 to 100mA 2 ( ) BS O Ig 10 LE VO 350 Quiescent current change IO=1 to 200mA Vin=6.85 to 20V Output noise voltage f=10Hz to 10Hz Ripple rejection Vin=7.
PAGE 17
ZSR SERIES ZSR600 test conditions (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=10V Parameter Output Voltage Conditions IO=1 to 200mA(␶) Min. 5.85 5.76 Vin=8 to 20V 5.76 TE Symbol VO Typ. 6 Max. 6.15 6.24 Units V V 6.24 V IO =1 to 100mA(␶) Line regulation Vin=8 to 20V 10 40 mV ⌬VO Load regulation IO=1 to 200mA 7 30 mV IO=1 to 100mA 2.
PAGE 18
ZSR SERIES Definitions Product change Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or service. Customers are solely responsible for obtaining the latest relevant information before placing orders. Applications disclaimer The circuits in this design/application note are offered as design ideas.