Document
6.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATOR
April 7, 1998
EZ1585D
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The EZ1585D is a high performance positive voltage regulator designed for use in applications requiring low dropout performance at full rated current. Additionally, the EZ1585D 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 EZ1585D has tight tolerance on reference voltage, ±1% at 25°C and ±1.5% over line, load and temperature, as well as a 6.0A maximum current. The EZ1585D is a three terminal regulator with adjustable output voltage available in the popular TO220 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
DEVICE EZ1585DCT PACKAGE TO-220 VOUT VOLTS 1.30 to 5.7
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Parameter Input Supply Voltage Power Dissipation Thermal Resistance Junction to Case Control Power Symbol VIN PD Maximum 7 Internally Limited Units V W
θJC θJA TJ TSTG TLEAD
0.7 3.0 50 0 to 125 -65 to 150 260
°C/W °C/W °C °C °C
PIN CONFIGURATION
Thermal Resistance Junction to Ambient Operating Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering) 10 Sec
Pentium Processor is a trademark of Intel Corp.
1
© 1998 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
6.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATOR
April 7, 1998
EZ1585D
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj IO = 10mA to 6.0A; 1.3V ≤=(VIN - VOUT) ≤=2.6V Test Conditions Parameter Reference Voltage
(1)
Test Limits TJ
(5)
Symbol VREF
VIN Note 7 Note 8
IO 10mA≤IO≤5A 10mA≤IO≤6A 10mA≤IO≤5A
Min 1.238
Typ
Max 1.262
Units
10mA≤IO≤6A 25°C O.T.
1.250 1.231 1.269
V
Adj Voltage Version
(1)
Note 7 Note 8
Line Regulation
REG(LINE) REG(LOAD) VD
Note 6 10mA 5V
25°C O.T. 25°C O.T.
0.015 0.035 0.05 0.2 1 1.1
0.2 0.2 0.3 0.4
%
Adj Voltage Version Load Regulation
(1)
%
Dropout Voltage
(2)
25°C 5A 6A O.T.
V 1.3 1.8
Current Limit
ICL TC IADJ
Note 7 Note 8
O.T.
6.0 5.0 0.005
A
Temperature Coefficient Adjust Pin Current
Note 6 Note 6 25°C O.T. 40 20
%/°C 80 100 µA
55
Adjust Pin Current Change Temperature Stability Minimum Load Current Adj Voltage Version RMS Output Noise(3) Ripple Rejection Ratio
(4)
∆IADJ TS IO VN RA 5V 5V Note 6 5V 5.0A 0.5A
O.T. O.T. O.T. 25°C O.T. 60
0.2 0.5 5 0.003 72
5
µA %
10
mA %VO dB
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, (VIN-VOUT) = 1.5V. (5) Over Temp. (O.T.) = over specified operating junction temperature range. (6) VIN = 4.75 to 5.25V. (7) 1.8V ≤ (VIN - VOUT) ≤ 2.6V. (8) 1.3V ≤ (VIN - VOUT) ≤ 1.8V.
2 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
6.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATOR
April 7, 1998
EZ1585D
TYPICAL APPLICATIONS
ADJUSTABLE VOLTAGE REGULATOR
(1)(2)
RECOMMENDED CIRCUIT FOR THE INTEL PENTIUM PROCESSOR - P54C-VRE
3 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
6.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATOR
April 7, 1998
EZ1585D
DEVICE OUTLINE - TO-220
4 © 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
.