? 1999 semtech corp. 652 mitchell road newbury park ca 91320 3.0 amp low dropout positive voltage regulators ez1587 november 22, 1999 1 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. 90a over temperature ? fixed/adjustable output voltage ? line regulation typically 0.005% ? load regulation typically 0.05% ? to-220 or to-263 packages 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. tel:805-498-2111 fax:805-498-3804 web:http ://www.semtech.com 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 pentium processor is a trademark of intel corp. powerpc is a trademark of ibm absolute maximum ratings parameter symbol maximum units input supply voltage v in 7v power dissipation p d internally limited w thermal resistance junction to case to-220 to-263 jc 3 3 c/w thermal resistance junction to ambient to-220 to-263 ja 50 60 c/w operating junction temperature range t j 0 to 125 c storage temperature range t stg -65 to 150 c lead temperature (soldering) 10 sec t lead 260 c ordering information 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). device package v out volts ez1587ct-x.x to-220 see note (1) ez1587cm-x.x to-263 (2) see note (1) block diagram pin configurations
? 1999 semtech corp. 652 mitchell road newbury park ca 91320 3.0 amp low dropout positive voltage regulators ez1587 november 22, 1999 2 electrical characteristics unless otherwise specified, adj v in = 2.75 to 7.0v and adj i o = 10ma to 3.0a; fixed (v out +1.5) to 7.0v and fixed i o = 0ma to 3.0a notes: (1) low duty cycle pulse testing with kelvin connections required. (2) ? v out , ? v ref = 1% (3) bandwidth of 10 hz to 10 khz. (4) 120 hz input ripple, (c adj for adj = 25f). (5) over temp. (o.t.) = over specified operating junction temperature range. test conditions test limits parameter symbol v in i o t j (5) min typ max units output voltage (1) v o 5v 10ma 25c 0.99|v o |v o 1.01|v o |v fixed voltage version o.t. 0.98|v o |v o 1.02|v o | reference voltage (1) v ref 5v 10ma 25c 1.238 1.250 1.262 v adj voltage version o.t. 1.225 1.250 1.275 line regulation (1) reg (line) 25c 0.005 0.2 % fixed voltage version 0ma o.t. 0.035 0.2 adj voltage version 10ma load regulation (1) reg (load) 5v 25c 0.05 0.3 % o.t. 0.2 0.4 dropout voltage (2) v d 25c 1 v ez1587 o.t. 1.1 1.3 current limit i cl o.t. 3.1 4.5 a quiescent current fixed voltage version i q 5v o.t. 10 13 ma temperature coefficient t c o.t. 0.004 0.02 %/c adjust pin current i adj 25c 55 a o.t. 90 adjust pin current change ? i adj o.t. 0.2 5 a temperature stability t s 5v 0.5a o.t. 0.5 % minimum load current adj voltage version i o 5v o.t. 5 10 ma rms output noise (3) v n 25c 0.003 %v o ripple rejection ratio (4) r a 5v 3.0a o.t. 60 72 db
? 1999 semtech corp. 652 mitchell road newbury park ca 91320 3.0 amp low dropout positive voltage regulators ez1587 november 22, 1999 3 typical applications adjustable voltage regulator (1)(2) fixed voltage regulator (1)(2) recommended circuit for the intel pentium processor? - p54c-vre pentium processor is a trademark of intel corp. ez1587
? 1999 semtech corp. 652 mitchell road newbury park ca 91320 3.0 amp low dropout positive voltage regulators ez1587 november 22, 1999 4 device outline - to-220 device outline - to-263
? 1999 semtech corp. 652 mitchell road newbury park ca 91320 3.0 amp low dropout positive voltage regulators ez1587 november 22, 1999 5 ecn99-734 land pattern - to-263
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