Page 1
6.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
EZ1585D
April 7, 1998
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.
BLOCK DIAGRAM
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 PACKAGE V
EZ1585DCT TO-220 1.30 to 5.7
VOLTS
OUT
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Maximum Units
Input Supply Voltage V
Power Dissipation
Thermal Resistance
Junction to Case
Control
Power
Thermal Resistance
Junction to Ambient
Operating Junction
Temperature Range
Storage
Temperature Range
Lead Temperature
(Soldering) 10 Sec
T
T
P
θ
JC
θ
JA
T
STG
LEAD
IN
D
J
7V
Internally
Limited
0.7
3.0
50 °C/W
0 to 125 °C
-65 to 150 °C
260 °C
W
°C/W
Pentium Processor is a trademark of Intel Corp.
© 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
1
Page 2
6.0 AMP LOW DROPOUT
EZ1585D
POSITIVE VOLTAGE REGULATOR
April 7, 1998
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj IO = 10mA to 6.0A; 1.3V ≤=(VIN - V
Test Conditions Test Limits
Parameter Symbol V
Reference Voltage
(1)
V
REF
IN
Note 7
Note 8
Adj Voltage Version Note 7
Note 8
Line Regulation
(1)
REG
(LINE)
Note 6 25°C 0.015 0.2 %
I
10mA≤I
10mA≤I
10mA≤I
10mA≤I
O
O
O
O
O
Adj Voltage Version 10mA O.T. 0.035 0.2
Load Regulation
Dropout Voltage
(1)
(2)
REG
(LOAD)
V
D
5V 25°C 0.05 0.3 %
5A O.T. 1.1 1.3
) ≤=2.6V
OUT
(5)
T
J
25°C 1.238 1.262
≤6A
≤5A
O.T. 1.231 1.269
≤6A
Min Typ Max Units
1.250 V
≤5A
O.T. 0.2 0.4
25°C 1 V
6A 1.8
Current Limit I
CL
Note 7 O.T. 6.0 A
Note 8 5.0
Temperature Coefficient T
Adjust Pin Current I
C
ADJ
Note 6 0.005 %/°C
Note 6 25°C 40 55 80 µA
O.T. 20 100
Adjust Pin Current
Change
∆I
Temperature Stability T
Minimum Load Current
Adj Voltage Version
RMS Output Noise
Ripple Rejection Ratio
(3)
(4)
ADJ
S
I
O
V
N
R
A
5V 0.5A O.T. 0.5 %
5V O.T. 5 10 mA
Note 6 25°C 0.003 %V
5V 5.0A O.T. 60 72 dB
O.T. 0.2 5 µA
NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) ∆V
(3)
, ∆V
OUT
Bandwidth of 10 Hz to 10 kHz.
(4) 120 Hz input ripple, C
REF
= 1%
= 25µF, (VIN-V
OUT
) = 1.5V.
OUT
(5) Over Temp. (O.T.) = over specified operating junction temperature range.
(6) V
(7) 1.8V ≤ (V
(8) 1.3V ≤ (V
= 4.75 to 5.25V.
IN
IN
IN
- V
- V
OUT
OUT
) ≤ 2.6V.
) ≤ 1.8V.
O
2
© 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
Page 3
April 7, 1998
TYPICAL APPLICATIONS
6.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
ADJUSTABLE VOLTAGE REGULATOR
EZ1585D
(1)(2)
RECOMMENDED CIRCUIT FOR THE
INTEL PENTIUM PROCESSOR - P54C-VRE
3
© 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
Page 4
April 7, 1998
DEVICE OUTLINE - TO-220
6.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATOR
EZ1585D
4
© 1998 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
Loading...