4.6 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
November 22, 1999
EZ1585
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The EZ1585 series of high performance positive
voltage regulators are designed for use in applications
requiring low dropout performance at full rated
current. Additionally, the EZ1585 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 EZ1585 series
are three terminal regulators with fixed and adjustable
voltage options available in popular packages.
FEATURES
• Low dropout performance,
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1.3V max. for EZ1585
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 0.015%
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
EZ1585CM-X.X
EZ1585CT-X.X
PACKAGE
TO-263
(2)
TO-220
VOUT VOLTS
See Note (1)
See Note (1)
Notes:
(1) Where X.X denotes voltage options. Available
voltages are: 1.5V, 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
2.5
2.5
°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.
© 1999 SEMTECH CORP.
1
652 MITCHELL ROAD NEWBURY PARK CA 91320
4.6 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1585
November 22, 1999
TYPICAL APPLICATIONS
FIXED VOLTAGE REGULATOR
(1)(2)
ADJUSTABLE VOLTAGE REGULATOR
(1)(2)
3
© 1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
