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ZSR900 Dataheets PDF



Part Number ZSR900
Manufacturers Zetex Semiconductors
Logo Zetex Semiconductors
Description 2.85 TO 12 VOLT FIXED POSITIVE LOCAL VOLTAGE REGULATOR
Datasheet ZSR900 DatasheetZSR900 Datasheet (PDF)

ZSR SERIES 2.85 TO 12 VOLT FIXED POSITIVE LOCAL VOLTAGE REGULATOR DEVICE 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 circuit design allows creation of any custom voltage in the range 2.85 to 12 volts. The devices are available in a small outline surface mount package, ideal for applications where space saving is important, as well as through hole TO92 style pac.

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ZSR SERIES 2.85 TO 12 VOLT FIXED POSITIVE LOCAL VOLTAGE REGULATOR DEVICE 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 circuit design allows creation of any custom voltage in the range 2.85 to 12 volts. The devices are available in a small outline surface mount package, ideal for applications where space saving is important, as well as through hole TO92 style packaging. The devices are suited to local voltage regulation applications, where problems could be encountered with distributed single source regulation, a s w e l l a s m ore ge ner a l vol t age r e g u l a t i o n 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 350µA. 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. ZSR285 ZSR300 ZSR330 ZSR400 ZSR485 ZSR500 ZSR520 ZSR570 ZSR600 ZSR700 ZSR800 ZSR850 ZSR900 ZSR1000 ZSR1200 2.85V 3.0V 3.3V 4.0V 4.85V 5.0V 5.2V 5.7V 6.0V 7.0V 8.0V 8.5V 9.0V 10.0V 12.0V FEATURES • Small outline SO8 and SOT223 package • TO92 package • 2.85 to 12 Volt • Output current up to 200mA • Tight initial tolerance • Low quiescent current • -55 to 125°C temperature range • No external components • Internal thermal shutdown • Internal short circuit current limit VOLTAGE RANGE ISSUE 3 - SEPTEMBER 2001 1 ZSR SERIES ABSOLUTE MAXIMUM RATING Input voltage Output Current(Io) Operating Temperature Storage Temperature 20V 200mA -55 to 125°C -65 to 150°C Power Dissipation (Tamb=25°C) SOT223 2W(Note 3) TO92 S08 600mW 780mW(Note 3) ELECTRICAL CHARACTERISTICS Notes: 1. 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 Tamb=125°C. 2. 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. 3. Maximum power dissipation, for the SOT223 and SO8 packages, is calculated assuming that the device is mounted on a PCB measuring 2 inches square. 4. 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 (1µF 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. ZSR285 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=6.85V SYMBOL PARAMETER VO Output Voltage IO =1 to 200mA CONDITIONS MIN. 2.78 τ 2.736 TYP. 2.85 MAX. 2.92 2.964 2.964 10 5 2 350 40 25 600 100 100 75 48 4.85 I O =5.0mA τ 0.1 mV/°C 62 4.55 UNITS V V V mV mV mV µA µA µA µ V rms dB V Vin =4.85 to 20V 2.736 IO =1 to 100mA τ ∆VO ∆VO lq ∆lq Vn Line Regulation Load Regulation Quiescent Current Quiescent Current Change Output Noise Voltage V =4.85 to 20V in I =1 to 200mA O I O =1 to 100mA τ I O =1 to 200mA V in =4.85 to 20V f=10Hz to 10kHz V in =5.85 to 18V f=120Hz ∆Vin /∆VO Ripple Rejection Vin ∆VO /∆T Input Voltage Required To Maintain Regulation Average Temperature Coefficient of V O ␶=Tj=-55 to 125°C ISSUE 3 - SEPTEMBER 2001 2 ZSR SERIES ZSR300 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=7V SYMBOL PARAMETER VO Output Voltage I O =1 to 200mA Vin =5 to 20V IO =1 to 100mA ∆V O ∆V O lq ∆lq Vn Line Regulation Load Regulation Quiescent Current V =5 to 20V in CONDITIONS MIN. 2.92 τ 2.88 τ 2.88 TYP. 3.0 MAX. 3.08 3.12 3.12 UNITS V V V mV mV mV µA µA µA µ V rms dB V mV/°C 10 5 2 350 40 25 600 100 100 I =1 to 200mA O I O =1 to 100mA τ Quiescent Current Change I O =1 to 200mA V in =5 to 20V Output Noise Voltage f=10Hz to 10kHz V in =6 to 18V f=120Hz 48 5 I O =5.0mA τ 0.1 75 62 4.7 ∆Vin /∆VO Ripple Rejection Vin ∆VO /∆T Input Voltage Required To Maintain Regulation Average Temperature Coefficient of V O ZSR330 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=7.3V SYMBOL PARAMETER VO Output Voltage I O =1 to 200mA τ V in =5.3 to 20V I O =1 to 100mA τ ∆VO ∆VO lq ∆lq Vn Line Regulation Load Regulation Quiescent Current V =5.3 to 20V in CONDITIONS MIN. 3.218 3.168 3.168 TYP. 3.3 MAX. 3.382 3.432 3.432 UNITS V V V mV mV mV µA µA µA µ V rms dB V mV/°C 7.5 5 2 350 30 25 600 100 100 I =1 to 200mA O I O =1 to 100mA τ Quiescent Current Change I O =1 to 200mA V in =5.3 to 20V Output No.


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