Datasheet EZ1587CT-3.45, EZ1587CT-3.3, EZ1587CT-2.5, EZ1587CT-1.8, EZ1587CT-1.5 Datasheet (Semtech Corporation)
...Page 1
© 1999 SEMTECH CO RP . 652 MITCHELL ROA D NE WBURY 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 c ur r ent rating over line and temperature
•
Fast transient r esponse
•
±2% total output regulation over line, load
and temperat ur e
•
Adjust pin cur r ent max. 90µA over temperature
•
Fix ed/adjustable output voltage
•
Line regulat ion typically 0.005%
•
Load regulati on typically 0.05%
•
TO-220 or TO-263 packages
DESCRIPTION
The EZ1587 series of high perform anc e posi tive
voltage regulators are designed f or use i n applications
requiring low dropout performance at full rated c ur r ent.
Additi onally, the EZ1587 seri es provides excellent
regulati on over variations in line, load and
temperature.
Outstanding features include low dropout per formance
at rated current, fast transient r esponse, i nternal
current limiting and t hermal shutdown protection of the
output device. The EZ1587 seri es are t hr ee terminal
regulators with fixed and adjustable voltage options
available in popular pack ages.
TEL:805-498-2111 F AX:805-498-3804 WEB:http://www.semtech.com
APPLICATIONS
•
Pentium® Processor supplies
•
PowerPC™ supplies
•
Other 1.3V to 5.7V microproc essor suppli es
•
Low volt age 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 V oltage V
IN
7V
Power Dissipation
P
D
Internally
Limited
W
Thermal Resistance
Junction t o Case
TO-220
TO-263
θ
JC
3
3
°C/W
Thermal Resistance
Junction t o A mbient
TO-220
TO-263
θ
JA
50
60
°C/W
Operating J unc tion
Temperat ur e Range
T
J
0 to 125 °C
Storage
Temperat ur e Range
T
STG
-65 to 150 °C
Lead Temperat ur e
(Solderi ng) 10 S ec
T
LEAD
260 °C
ORDERING INFORMATION
Notes:
(1) Where X.X denotes voltage options. Avail able
voltages are: 1.5V, 1.8V, 2. 5V , 3.3V and 3.45V. Leave
blank f or adjustable version ( 1.3 to 5.7V). Contact
factor y for additional voltage opti ons.
(2) Add suffix ‘TR’ f or 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
Page 2
© 1999 SEMTECH CO RP . 652 MITCHELL ROA D NE WBURY PARK CA 91320
3.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1587
November 22, 1999
2
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Adj VIN = 2.75 to 7. 0V and A DJ IO = 10mA to 3.0A;
Fix ed ( V
OUT
+1.5) to 7.0V and Fixed IO = 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 r ipple, (C
ADJ
for ADJ = 25µF).
(5) Over Temp. (O.T.) = over specified operating junction temper ature 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 25°C 0.99|VO|VO1.01|VO|V
Fix ed V oltage Version O.T. 0.98|V
O
|VO1.02|VO|
Reference Voltage
(1)
V
REF
5V 10mA 25°C 1.238 1.250 1.262 V
Adj Voltage Version O.T. 1.225 1.250 1.275
Line Regulation
(1)
REG
(LINE)
25°C 0.005 0.2 %
Fix ed V oltage Version 0mA O.T. 0.035 0.2
Adj Voltage Version 10mA
Load Regulation
(1)
REG
(LOAD)
5V 25°C 0.05 0.3 %
O.T. 0.2 0.4
Dropout Volt age
(2)
V
D
25°C 1 V
EZ1587 O.T. 1.1 1.3
Current Limit I
CL
O.T. 3.1 4.5 A
Quiescent Current
Fix ed V oltage Version
I
Q
5V O.T. 10 13 mA
Temperat ur e Coeffici ent T
C
O.T. 0.004 0.02 %/°C
Adjust Pin Cur r ent I
ADJ
25°C 55 µA
O.T. 90
Adjust Pin Cur r ent
Change
∆
I
ADJ
O.T. 0.2 5 µA
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
25°C 0.003 %V
O
Ripple Rej ec tion Ratio
(4)
R
A
5V 3.0A O.T. 60 72 dB
Page 3
© 1999 SEMTECH CO RP . 652 MITCHELL ROA D NE WBURY PARK CA 91320
3.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1587
November 22, 1999
3
TYPICAL APPLICATIONS
ADJU STABLE VOLTAGE REG ULATOR
(1)(2)
FIXED VOLTAGE REGULATOR
(1)(2)
RECOMMENDED CI RCUIT FOR THE INTEL
PENTIUM PROCESSOR® - P54C-VRE
Pentium Processor is a trademark of Intel Corp.
EZ1587
Page 4
© 1999 SEMTECH CO RP . 652 MITCHELL ROA D NE WBURY PARK CA 91320
3.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1587
November 22, 1999
4
DEVICE OUTLINE - TO-220
DEVICE OUTLINE - TO-263
Page 5
© 1999 SEMTECH CO RP . 652 MITCHELL ROA D NE WBURY PARK CA 91320
3.0 AMP LOW DROPOUT
POSITIVE VOLTAGE REGULATORS
EZ1587
November 22, 1999
5
ECN99-734
LAND PATTERN - TO-263
Loading...