FEATURES * Low dropout performance, 1.2V max. for EZ1083A, 1.3V max. for EZ1083 * Full current rating over line and temperature * Fast transient response * +2% Total output regulation over line, load and temperature * Adjust pin current max 90UA over temperature * Fixed/adjustable output voltage * Line regulation typically 0.015% * Load regulation typically 0.05% * TO-220 or TO-247 packages DESCRIPTION The EZ1083 Series are high performance positive voltage regulators designed for use in applications requiring low dropout perfor- mance at full rated current. Additionally, the EZ1083 Series provides excellent regulation over variations due to changes in line, load and temperature. Outstanding features include low dropout performance at rated cur- rent, fast transient response, internal current limiting and thermal shutdown protection of the output device. The EZ1083 Series are three terminal regulators with fixed and adjustable voltage options available in popu- lar packages. DEVICE SELECTION GUIDE DEVICE Vour VOLTS PACKAGE EZ1083CP 1.30 to 4.0 EZ1083CP-3.3 3.3 0-247 EZ1083CP-3.45 3.45 EZ1083ACT 1.30 to 4.0 EZ1083CT 1.30 to 4.0 EZ1083CT-3.3 3.3 TO-220 EZ1083CT-3.45 3.45 EZ1083ACT-3.525 3.525 NOTE: Contact factory for additional voltage options. .0 AMP POSITIVE OLTAGE REGULATORS EZ1083 EZ1083A TEL: 805-498-2111 FAX: 805-498-3804 ABSOLUTE MAXIMUM RATINGS _ Parameter - Symbol . Maximum | Units Input . Voltage Vin 7 V Power Internally Dissipation Pp Limited Ww | Thermal Resistance | Junction to Case 9 | TO-220 ye 2 70-247 2 Thermal Resistance Junction to Ambient 6 C/W TO-220 JA 50 Operating Junction T 0 to 125 J . Temperature Range | Storage Temperature T _ Range STG Lead Temperature (Soldering) 10 Sec. -65 to 150 ae . C TLEAD 260 BLOCK DIAGRAM INPUT pS EN [sea S.0.A. CURRENT | LIMIT OUTPUT <__ HO} LIMITING SENSE AMPLIFIER | VOLTAGE << | REGULATION AMPLIFIER og. ADJ/COM VREF fe L 1996 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 247.5 AMP POSITIVE evi082 VOLTAGE REGULATORS EZ1083A TEL: 805-498-2111 FAX: 805-498-3804 ELECTRICAL CHARACTERISTICS Unless otherwise specified, Adj Vjy = 2.75V to 7.0V and Adj Ig = 10mA to 7.5A; Fixed Vix = 4.75V to 7.0V and Fixed lp = OmA to 7.5A Test Conditions Test Limits PARAMETER | SYMBOL Vin lo Ty) | MIN of TYP MAX UNITS Output Voltage?) V 5V0 OmA 25 - 0.99/Vo| | 1.01|Vo]| : . : po eens ee ni | Fixed Voltage ee | Over Temp. 0.98IVol_1.02V0|, Reference Voltage") 5V " 10mA 25 1.238 1.262 1 VReEF me nnn ee : a ! 1.25 mo Adj Voltage | Over Temp. 4.225 | ' 41,275 ! 25 0.015 ion(1) 10mA 0. Line Regulation | REG Line) - Over Temp. 0.035 0.2 ; | 25 0.05 0.3 ion(?) 5V an toad Regulation! oo REGuoan) Over Temp. _ 02 = 04 Dropout Voltage Vp a 25 1 AVout: AVREF = 1% V EZ1083A 1.0 1.2 EZ1083 a 7 : 1.1 a 1.3 SO Current Limit tet | Over Temp. 75 95 A Quiescent Current By : Fixed Model ee || . Re HM Temperature Coefficient Tc a ; 0,005 RIPC adjust a 88 85 Adjust Pin Current A 90 yA Adjust Pin Current Change _ Alans | 02 0 5 Temperature Stability Tg =: 5V 0.5A Over Temp. 0.5 . % Minimum Load Current AdjModel = ts*S vO 5 10 mA RMS Output Noise) VN a 25 0.003 %~NVo Ripple Rejection Ratio) Ra SV. 7.5A_ Over Temp. 60 72 dB (1) Low duty cycle pulse testing with Kelvin connections required. (2) Bandwidth of 10Hz to 10kHz. (3) 120Hz input ripple (Cap, for ADJ) = 25uF. (4) Over Temp. = over specified operating junction temperature range. 92 1996 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320