EZ1085 3 Amp Positive Voltage Regulator POWER MANAGEMENT Description Features The EZ1085 series of high performance positive voltage Low dropout voltage: 1.3V max. for EZ1085C, regulators are designed for use in applications requiring 1.4V max. for EZ1085I low dropout performance at up to 3A. Additionally, the Full current rating over line and temperature EZ1085 series provides excellent regulation over Fast transient response variations in line, load and temperature. 2% total output regulation over line, load and temperature Outstanding features include low dropout performance Adjust pin current max 90A over temperature at rated current, fast transient response, internal Fixed/adjustable output voltage (EZ1085C) current limiting and thermal shutdown protection of the Line regulation typically 0.015% output device. Load regulation typically 0.05% Industrial temperature range (EZ1085I) A variety of options are available for maximum flexibility: the EZ1085C has both fixed and adjustable voltage TO-220 and TO-263 packages. Available in RoHS options and is designed for use in commercial applica- compliant package tions and the EZ1085I is adjustable only for industrial Applications applications. Printer and plotter supplies All devices are available in the popular TO-220 and Instrumentation TO-263 packages. Medical equipment Microcontroller systems Telecommunication systems Motherboards Typical Application Circuit Switching supply post regulation Fixed Voltage Regulator U1 EZ1085C-3.3 3 2 TAB VIN > 4.75V VOUT = 3.3V IN OUT + + C1 C2 GND 10uF Tant. 10uF Tant. Min. 1 Adjustable Voltage Regulator U1 EZ1085 3 2 TAB VIN > 4.75V VOUT = 3.45V IN OUT + + C1 R1 C2 10uF Tant. ADJ 133 Ohm, 1% 10uF Tant. Min 1 R2 232 Ohm, 1% R2 V = V 1+ + I R2 Notes: OUT REF ADJ R1 (1) C1 needed if device is far from filter capacitors (2) C2 minimum value required for stability Revision: January 25, 2006 1 www.semtech.comEZ1085 POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. Plarameter Smymbo Msaximu Unit IVnput Supply Voltage 7V IN PPower Dissipation IWnternally Limited D Thermal Resistance Junction to Case TO-220 3 C/W JC TO-263 3 Thermal Resistance Junction to Ambient TO-220 50 C/W JA TO-263 60 Operating Ambient Temperature Range EZ1085C T 0 to 70 C A EZ1085I -40 to 85 Operating Junction Temperature Range EZ1085C T 0 to 125 C J EZ1085I -40 to 125 STtorage Temperature Range -C65 to 150 STG LTead Temperature (Soldering) 10 Sec. 3C00 LEAD EDSD Rating (Human Body Model) E2S kV Electrical Characteristics Unless otherwise specified: Adj. V = 2.75V to 7.0V and Adj. I = 10mA to 3A Fixed V = 4.75 to 7.0V and Fixed I = 0 mA to 3A. IN O IN O Values in bold apply over full operating ambient temperature range. Plarameter SVymbo I MpinTxy Msa Unit IN O (1) Output Voltage V 5AV0Vm 0.985llV 1.015lVlV O O O O EZ1085C-X.X 0.98lVlV1.02l l O O (1) Reference Voltage V 5AV110m10.2319.25 1V.26 REF EZ1085C, EZ1085I 15.225 1.27 (1) Reference Voltage V 5AV130m10.2317.25 1V.26 RE (1) Line Regulation REG 150mA 0.04 0.2 % (LINE) (1) Load Regulation REG55V 0.1 0.4 % (LOAD) (1)(2) Dropout Voltage EVZ1085C, EZ1085C-X.X 30A 1.2 1.35 V D EZ1085I 1.20 1.40 CIurrent Limit 3.04A.5 CL 2006 Semtech Corp. 2 www.semtech.com