5.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS April 7, 1998 EZ1585B TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The EZ1585B is a high performance positive voltage regulator designed for use in applications requiring low dropout performance at full rated current. Additionally, the EZ1585B 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 EZ1585B has tight tolerance on reference voltage, ±1% at 25°C and ±1.5% over line, load and temperature. The EZ1585B is a three terminal regulator with adjustable output voltage available in the popular TO-220 package. FEATURES •= Low dropout performance, 1.3V max. •= Full current rating over line and temperature •= Fast transient response •= ±1.5% total output regulation over line, load and •= •= •= •= •= temperature Adjust pin current max. 100µA over temperature Adjustable output voltage Line regulation typically 0.015% Load regulation typically 0.05% TO-220 package APPLICATIONS •= Pentium® Processor supplies ORDERING INFORMATION BLOCK DIAGRAM DEVICE EZ1585BCT PACKAGE VOUT VOLTS TO-220 1.30 to 5.7 ABSOLUTE MAXIMUM RATINGS Parameter Input Supply Voltage Power Dissipation PIN CONFIGURATION Thermal Resistance Junction to Case Control Power Symbol Maximum Units VIN 7 V PD Internally Limited W θJC 0.7 3.0 Thermal Resistance Junction to Ambient θJA 50 °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 °C/W Pentium Processor is a trademark of Intel Corp. © 1998 SEMTECH CORP. 1 652 MITCHELL ROAD NEWBURY PARK CA 91320 5.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1585B April 7, 1998 ELECTRICAL CHARACTERISTICS Unless otherwise specified, Adj IO = 10mA to 5.0A; 1.3V ≤=(VIN - VOUT) ≤=2V Test Conditions Parameter Symbol Reference Voltage (1) VIN IO VREF Adj Voltage Version (1) REG(LINE) Line Regulation Note 6 Adj Voltage Version 10mA Load Regulation(1) REG(LOAD) (2) Dropout Voltage 5V VD TJ Min Typ Max Units 25°C 1.238 1.250 1.262 V O.T. 1.231 1.250 1.269 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. 1.1 O.T. Current Limit ICL Temperature Coefficient TC Note 6 Adjust Pin Current IADJ Note 6 Adjust Pin Current Change Test Limits (5) 1.3 A 0.005 ∆IADJ 40 O.T. 20 % V 5.0 25°C % 55 %/°C 80 µA 100 O.T. 0.2 O.T. 0.5 5 µA Temperature Stability TS 5V Minimum Load Current Adj Voltage Version IO 5V O.T. 5 RMS Output Noise(3) VN Note 6 25°C 0.003 %VO RA 5V 72 dB (4) Ripple Rejection Ratio 0.5A 5.0A O.T. 60 % 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, COUT = 25µF. (5) Over Temp. (O.T.) = over specified operating junction temperature range. (6) VIN = 4.75 to 5.25V. 2 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 5.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1585B April 7, 1998 TYPICAL APPLICATIONS ADJUSTABLE VOLTAGE REGULATOR (1)(2) RECOMMENDED CIRCUIT FOR THE INTEL PENTIUM PROCESSOR - P54C-VRE Pentium Processor is a trademark of Intel Corp. © 1998 SEMTECH CORP. 3 652 MITCHELL ROAD NEWBURY PARK CA 91320 5.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS EZ1585B April 7, 1998 DEVICE OUTLINE - TO-220 4 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320