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| 5.0 AMP POSITIVE VOLTAGE REGULATOR June 7, 1999 EZ1084 EZ1084B TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The EZ1084 series of high performance positive voltage regulators are designed for use in applications requiring low dropout performance at full rated current. Additionally, the EZ1084 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 EZ1084 has both fixed and adjustable voltage options, while the EZ1084B 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 EZ1084, 1.45V max. for EZ1084B Full current rating over line and temperature Fast transient response 2% total output regulation over line, load and temperature (2.4% for EZ1084B) Adjust pin current max 90A over temperature Fixed/adjustable output voltage (EZ1084) Line regulation typically 0.015% Load regulation typically 0.05% TO-220 and TO-263 packages ORDERING INFORMATION DEVICE PACKAGE TO-263 (2) VOUT VOLTS See Note (1) 1.30 to 5.7 See Note (1) 1.30 to 5.7 APPLICATIONS * High current microprocessor supplies * Post regulators BLOCK DIAGRAM EZ1084CM-X.X EZ1084BCM EZ1084CT-X.X EZ1084BCT TO-220 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 Thermal Resistance Junction to Case TO-220 TO-263 Thermal Resistance Junction to Ambient TO-220 TO-263 Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) 10 Sec Symbol VIN PD Maximum 7 Internally Limited Units V W PIN CONFIGURATIONS JC 2.5 2.5 C/W JA TJ TSTG TLEAD 50 60 0 to 125 -65 to 150 260 C/W C C C 1 (c) 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 5.0 AMP POSITIVE VOLTAGE REGULATOR June 7, 1999 EZ1084 EZ1084B ELECTRICAL CHARACTERISTICS Unless otherwise specified, Adj VIN = 2.75V to 7.0V and Adj IO = 10mA to 5.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 5.0A Test Conditions Parameter Output Voltage EZ1084-X.X Reference Voltage EZ1084 Reference Voltage EZ1084B Line Regulation (1) (1) (1) (1) Test Limits TJ (5) Symbol VO VREF VREF REG(LINE) REG(LOAD) VD VIN 5V IO 0mA Min 0.99lVOl 0.98lVOl 1.238 1.225 1.233 1.220 Typ VO VO 1.250 1.250 1.250 1.250 0.015 0.035 0.05 0.2 1 1.10 1.20 Max 1.01lVOl 1.02lVOl 1.262 1.275 1.267 1.280 0.2 0.2 0.3 0.4 Units V 25C O.T. 5V 10mA 25C O.T. V 5V 10mA 25C O.T. V 10mA 25C O.T. % Load Regulation (1) 5V 25C O.T. % Dropout Voltage (2) 25C O.T. V 1.30 1.45 A 14 mA %/C A 90 EZ1084, EZ1084-X.X EZ1084B Current Limit Quiescent Current Fixed Voltage Version Temperature Coefficient Adjust Pin Current ICL IQ TC IADJ 5V O.T. O.T. O.T. 25C O.T. 5.0 7.5 12 0.005 55 Adjust Pin Current Change Temperature Stability Minimum Load Current Adj Voltage Version RMS Output Noise (3) (4) IADJ TS IO VN RA 5V 5.0A 5V 5V 0.5A O.T. O.T. O.T. 25C O.T. 60 0.2 0.5 5 0.003 72 5 A % 10 mA %VO dB Ripple Rejection Ratio 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 = 25F). (5) Over Temp. (O.T.) = over specified operating junction temperature range. 2 (c) 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 5.0 AMP POSITIVE VOLTAGE REGULATOR June 7, 1999 EZ1084 EZ1084B TYPICAL APPLICATIONS FIXED VOLTAGE REGULATOR (1)(2) ADJUSTABLE VOLTAGE REGULATOR (1)(2) EZ1084/EZ1084B 3 (c) 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 5.0 AMP POSITIVE VOLTAGE REGULATOR June 7, 1999 EZ1084 EZ1084B DEVICE OUTLINE - TO-220 DEVICE OUTLINE - TO-263 4 (c) 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 |
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