2.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS April 7, 1998 EZ1588 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The EZ1588 series of high performance positive voltage regulators are designed for use in applications requiring low dropout performance at full rated current. Additionally, the EZ1588 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 EZ1588 series are three terminal regulators with fixed and adjustable voltage options available in popular packages. FEATURES •= Low dropout performance, 1.3V max. for EZ1588 •= 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 APPLICATIONS •= Pentium® Processor supplies •= PowerPC™ supplies •= Other 2.5V to 3.6V microprocessor supplies •= Low voltage logic supplies •= Battery-powered circuitry •= Post regulator for switching supply BLOCK DIAGRAM DEVICE EZ1588CT-X.X EZ1588CM-X.X PACKAGE VOUT VOLTS TO-220 See Note (1) TO-263 (2) See Note (1) Notes: (1) Where X.X denotes voltage options. Available voltages are: 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 Pentium Processor is a trademark of Intel Corp. PowerPC is a trademark of IBM Corp. © 1998 SEMTECH CORP. 1 652 MITCHELL ROAD NEWBURY PARK CA 91320 2.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1588 April 7, 1998 ELECTRICAL CHARACTERISTICS Unless otherwise specified, Adj VIN = 2.75 to 7.0V and ADJ IO = 10mA to 2.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0mA to 2.0A Test Conditions Parameter (1) Output Voltage Symbol VIN IO VO 5V 0mA TJ Fixed Voltage Version Reference Voltage (1) VREF 5V 10mA Adj Voltage Version (1) Line Regulation REG(LINE) Fixed Voltage Version 0mA Adj Voltage Version 10mA (1) Load Regulation (2) Dropout Voltage REG(LOAD) 5V VD 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 2.0 % % V 1.3 2.5 A O.T. 10 13 mA TC O.T. 0.004 0.02 %/°C IADJ 25°C 55 O.T. Adjust Pin Current Change V ∆IADJ Temperature Stability TS 5V Minimum Load Current Adj Voltage Version IO 5V RMS Output Noise(3) VN Ripple Rejection Ratio(4) RA 5V 0.5A 2.0A 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 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 2.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1588 April 7, 1998 TYPICAL APPLICATIONS FIXED VOLTAGE REGULATOR (1)(2) ADJUSTABLE VOLTAGE REGULATOR (1)(2) 3 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 2.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1588 April 7, 1998 DEVICE OUTLINE - TO-220 DEVICE OUTLINE - TO-263 4 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320