3.0 AMP POSITIVE VOLTAGE REGULATOR June 17, 1999 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The EZ1085 series of high performance positive voltage regulators are designed for use in applications requiring low dropout performance at full rated current. Additionally, the EZ1085 series provides excellent regulation over variations in line, load and temperature. Outstanding features include low dropout performance at rated current, fast transient response, internal current limiting and thermal shutdown protection of the output device. The EZ1085 has both fixed and adjustable voltage options, while the EZ1085B is adjustable only for cost sensitive applications. These devices are available in the popular TO-220 and TO263 packages. FEATURES • Low dropout performance, • • • • • • • • 1.3V max. for EZ1085, 1.45V max. for EZ1085B Full current rating over line and temperature Fast transient response ±2% total output regulation over line, load and temperature (±2.4% for EZ1085B) Adjust pin current max 90µA over temperature Fixed/adjustable output voltage (EZ1085) Line regulation typically 0.015% Load regulation typically 0.05% TO-220 and TO-263 packages ORDERING INFORMATION DEVICE APPLICATIONS • Post regulators • Processor I/O supplies • Battery chargers BLOCK DIAGRAM EZ1085 EZ1085B EZ1085CM-X.X EZ1085BCM EZ1085CT-X.X EZ1085BCT PACKAGE VOUT VOLTS See Note (1) 1.30 to 5.7 (2) TO-263 TO-220 See Note (1) 1.30 to 5.7 Notes: (1) Where X.X denotes voltage options. Available voltages are: 1.5V, 2.5V and 3.3V. Leave blank for adjustable version (1.3 to 5.7V). Contact factory for additional voltage options. (2) Add suffix ‘TR’ for tape and reel (TO-263). ABSOLUTE MAXIMUM RATINGS Parameter Input Supply Voltage Power Dissipation PIN CONFIGURATIONS Thermal Resistance Junction to Case TO-220 TO-263 Symbol Maximum Units VIN 7 V PD Internally Limited W θJC 3 3 °C/W θJA 50 60 °C/W Operating Junction Temperature Range TJ 0 to 125 °C Storage Temperature Range TSTG -65 to 150 °C Lead Temperature (Soldering) 10 Sec TLEAD 260 °C Thermal Resistance Junction to Ambient TO-220 TO-263 1 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 3.0 AMP POSITIVE VOLTAGE REGULATOR EZ1085 EZ1085B June 17, 1999 ELECTRICAL CHARACTERISTICS Unless otherwise specified, Adj VIN = 2.75V to 7.0V and Adj IO = 10mA to 3.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 3.0A Test Conditions Parameter (1) Output Voltage Symbol VIN IO VO 5V 0mA TJ EZ1085-X.X Reference Voltage (1) VREF 5V 10mA EZ1085 Reference Voltage (1) VREF 5V 10mA EZ1085B (1) Line Regulation REG(LINE) (1) REG(LOAD) Load Regulation (2) 10mA 5V VD Dropout Voltage Test Limits EZ1085, EZ1085-X.X (5) Min Typ Max Units 25°C 0.99lVOl VO 1.01lVOl V O.T. 0.98lVOl VO 1.02lVOl 25°C 1.238 1.250 1.262 O.T. 1.225 1.250 1.275 25°C 1.233 1.250 1.267 O.T. 1.220 1.250 1.280 25°C 0.015 0.2 O.T. 0.035 0.2 25°C 0.05 0.3 O.T. 0.2 0.4 25°C 1 O.T. 1.10 1.30 1.20 1.45 EZ1085B Current Limit ICL Quiescent Current Fixed Voltage Version IQ Temperature Coefficient Adjust Pin Current O.T. 5V 3.0 O.T. 0.005 %/°C IADJ 25°C 55 µA 5V Minimum Load Current Adj Voltage Version IO 5V 0.5A VN Ripple Rejection Ratio A TC TS (4) % 12 ∆IADJ (3) % O.T. Temperature Stability RMS Output Noise V V 4.5 O.T. Adjust Pin Current Change V RA 5V 3.0A 14 mA 90 O.T. 0.2 O.T. 0.5 O.T. 5 25°C 0.003 %VO 72 dB O.T. 60 5 µA % 10 mA NOTES: (1) Low duty cycle pulse testing with Kelvin connections required. (2) ∆VOUT, ∆VREF = 1% (3) Bandwidth of 10 Hz to 10 kHz. (4) 120 Hz input ripple (CADJ for ADJ = 25µF). (5) Over Temp. (O.T.) = over specified operating junction temperature range. 2 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 3.0 AMP POSITIVE VOLTAGE REGULATOR EZ1085 EZ1085B June 17, 1999 TYPICAL APPLICATIONS FIXED VOLTAGE REGULATOR (1)(2) ADJUSTABLE VOLTAGE REGULATOR (1)(2) EZ1085/EZ1085B 3 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 3.0 AMP POSITIVE VOLTAGE REGULATOR EZ1085 EZ1085B June 17, 1999 DEVICE OUTLINE - TO-220 DEVICE OUTLINE - TO-263 4 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320