3.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS November 22, 1999 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The EZ1587 series of high performance positive voltage regulators are designed for use in applications requiring low dropout performance at full rated current. Additionally, the EZ1587 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 EZ1587 series are three terminal regulators with fixed and adjustable voltage options available in popular packages. APPLICATIONS • Pentium® Processor supplies • PowerPC™ supplies • Other 1.3V to 5.7V microprocessor supplies • Low voltage logic supplies • Battery-powered circuitry • Post regulator for switching supply BLOCK DIAGRAM EZ1587 FEATURES • Low dropout performance, • • • • • • • • 1.3V max. for EZ1587 Full current rating over line and temperature Fast transient response ±2% total output regulation over line, load and temperature Adjust pin current max. 90µA over temperature Fixed/adjustable output voltage Line regulation typically 0.005% Load regulation typically 0.05% TO-220 or TO-263 packages ORDERING INFORMATION DEVICE EZ1587CT-X.X EZ1587CM-X.X PACKAGE VOUT VOLTS See Note (1) TO-220 (2) See Note (1) TO-263 Notes: (1) Where X.X denotes voltage options. Available voltages are: 1.5V, 1.8V, 2.5V, 3.3V and 3.45V. 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 Pentium Processor is a trademark of Intel Corp. PowerPC is a trademark of IBM © 1999 SEMTECH CORP. 1 652 MITCHELL ROAD NEWBURY PARK CA 91320 3.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1587 November 22, 1999 ELECTRICAL CHARACTERISTICS Unless otherwise specified, Adj VIN = 2.75 to 7.0V and ADJ IO = 10mA to 3.0A; Fixed (VOUT +1.5) to 7.0V and Fixed IO = 0mA to 3.0A Test Conditions Parameter (1) Output Voltage Symbol VIN IO VO 5V 10mA TJ Fixed Voltage Version (1) Reference Voltage VREF 5V 10mA Adj Voltage Version (1) Line Regulation REG(LINE) Fixed Voltage Version 0mA Adj Voltage Version 10mA (1) REG(LOAD) Load Regulation (2) Dropout Voltage 5V VD EZ1587 Current Limit ICL Quiescent Current Fixed Voltage Version IQ Temperature Coefficient Adjust Pin Current Test Limits (5) Min Typ Max Units 25°C 0.99|VO| VO 1.01|VO| V O.T. 0.98|VO| VO 1.02|VO| 25°C 1.238 1.250 1.262 O.T. 1.225 1.250 1.275 25°C 0.005 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. 1.1 O.T. 5V 3.1 mA TC O.T. 0.004 0.02 %/°C IADJ 25°C 55 5V Minimum Load Current Adj Voltage Version IO 5V 0.5A VN Ripple Rejection Ratio A 13 TS (4) 1.3 10 Temperature Stability (3) % O.T. ∆IADJ RMS Output Noise % V 4.5 O.T. Adjust Pin Current Change V RA 5V 3.0A µA 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 LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1587 November 22, 1999 TYPICAL APPLICATIONS FIXED VOLTAGE REGULATOR (1)(2) ADJUSTABLE VOLTAGE REGULATOR (1)(2) RECOMMENDED CIRCUIT FOR THE INTEL PENTIUM PROCESSOR® - P54C-VRE EZ1587 Pentium Processor is a trademark of Intel Corp. © 1999 SEMTECH CORP. 3 652 MITCHELL ROAD NEWBURY PARK CA 91320 3.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1587 November 22, 1999 DEVICE OUTLINE - TO-220 DEVICE OUTLINE - TO-263 4 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 3.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1587 November 22, 1999 LAND PATTERN - TO-263 ECN99-734 5 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320