FIXED 2.5 AND 5 VOLT MINATURE VOLTAGE REGULATORS I_a!!al ISSUE 2- OCTOBER 1995 FEATURES . Small outline SOT23 package DEVICE DESCRIPTION The ZMR250 and 500 three terminal fixed positive voltage regulators feature internel current limit and will shut down under thermal overload conditions making the devices almost impossible to destroy. The circuit design offers an exceptionally small quiescent current, only 30@4 for the 2.5 volt device, ideal for low power applications. The initial devices in the series regulate to 2.5 or 5 volts with a drive capability up to 50mA, however, the flexible design will allow other voltage selections to be made. T092 package 2.5V and 5V Output current up to 50mA Very low Quiesent current (30pA) Uncond~ionally stable . Other output voltages possible . Internal short circuit current Iimit VOLTAGE RANGE The device was designed with space saving in mind and so is available in the small outline SOT23 package. This tiny package is ideal for applications where space is restricted. The device is also available in the through hole T092 package. ZMR250 2.5V ZMR500 5V Contact Zetex Marketing other voltages SCHEMATIC DIAGRAM for availabiiii CONNECTION TABLE Pin SOT223 T092 1 G nd In 2 In G nd 3 out out Pack F c B 1 see Diagrams Page 2-5 m 2-7 of ZMR250 ZMR500 ABSOLUTE MAXIMUM RATINGS 20V Input voltage Package power dissipation (Tatnt)=25 `C) SOT23 500mW T092 600mW Output current (Io) (Note 3) 200mA Operating temperature -55 to 125C Storage temperature -65 to 150"C Note: 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 T,~tF1250C. 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 excead the power dissipation limits of the chosen package, 3. Maximum power dissipation, for the SOT23 package, is calculated assuming that the device is mounted on a ceramic substrate measuring 15 x 15 x 0.6mm. ZMR250 ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) :Tj=250C, lo=lOmA, Vin=6.5V SYMBOL V. PARAMETER CONDITIONS Output Voltage MIN. TYP. MAX. UNITS 2.438 2.5 2.563 v l.=O to 50mA T.=-55 to 125C 2.360 2.640 v vi"=4,5 to 20V l.=O to 50mA T.=-55 to 125C 2.360 2.640 v 5 15 mV AVO Line Regulation Vin=4.5 AVO Load Regulation l.=O to 50mA l.=O to 10mA 20 12 30 mV mV Iq Quiescent Current Ti=-55 to 125C 30 40 G Alq Quiescent Current Change l.=O to 50mA vin=4.5 to 20V 1 2 ilo 10 PA v" Output Noise Voltage f=lOHz to IOKHZ 65 pV rms Ripple Rejection Vin=6.3 to 113V f=120Hz 55 75 dB 4.2 3.9 v AViJAVo V,n AVdAT Input Voltage Required Maintain Regulation Average Temperature Coefficient of V. to 20V I@ To lo=5.0mA Tj=-55 to 125C 2-8 0.275 0.700 mVPC ZMR250 ZMR500 ZMR500 ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated) :Tj=25"C, 10=lOmA, Vin=lOV ;YMBOL V. PARAMETER CONDITIONS Output Voltage MIN. TYP. MAX. UNITS 4.875 5 5,125 v l.=O to 50mA Tj=-55 to 125C 4.780 5.160 v vin=7 to 20V l.=O to 50mA 4.780 5.175 v Tj=-55 to 125C AVO Line Regulation vin=7 to 20V 5 15 mV AVO Load Regulation l.=O to 50mA l.=O to 10mA 25 15 40 mV mV Iq Quiescent Current Tj=-55 to 125C 50 70 VA Alq Quiescent Current Change v" AViJAVo V,n AVdAT l.=O to 50mA 1 +10 LA v,n=7 to 20V 2 10 VA Output Noise Voltage f=l OHz to IOKHZ 90 Ripple Rejection Vin=8 to 18V f=120Hz Input Voltage Required Maintain Regulation Average Temperature Coefficient of V. 55 WV rms 72 dB To -1 6.7 v lo=5.0mA Tj=-55 to 125C 2-9 0.275 0.700 mVpC ZMR250 ZMR500 TYPICAL CHARACTERISTICS 60 ~ 50 E do E z JO 3ZE33?I 20 i 3 -50 -25 0 25 50 Temperature 73 100 0 02&88 25 - ("C) 10 12 Input Voltage Output Voltage v Temperature Coefficient !. 18 ,r3 Quiescent Current v Input VoltsgS 60 I I I Iwo 1+ \ VIN=VO+4 56 52 48 .!4 ,, I -50 -25 0 25 Temperature 50 75 I 1 100 125 I 40 -50 -25 ("C) 0 25 50 Temperature Quiescent Current v Temperature 75 100 !25 - ("C) Quiescent Current v Temperature 2.5 50 49 2.0 48 47 1.5 30 1.0 29 0.5 28 27 . B D 0, Output I 13 1 Current 20 (V) 100 -50 - (mA) -25 0 25 Temperature Quiescent Current v Output Current 50 75 100 125 ("C) Drop-Out Voltage v Temperature 2-1o / ZMR250 ZMR500 TYPICAL CHARACTERISTICS 2-11