SEMTECH EZ1083_05

EZ1083
7.5A Positive
Voltage Regulator
POWER MANAGEMENT
Description
Features
Low dropout performance: 1.4V max. for EZ1083
Full current rating over line and temperature
Fast transient response
Adjust pin current max 90µA over temperature
Fixed/adjustable output voltage (EZ1083)
Line regulation typically 0.015%
Load regulation typically 0.05%
±2% total output regulation over line, load
and temperature
‹ TO-220 package. Available in WEEE and RoHS
compliant package
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The EZ1083 is a high performance positive voltage
regulator designed for use in applications requiring low
dropout performance at 7.5A. Additionally, the EZ1083
series provides excellent regulation over variations in line,
load and temperature.
Features include 1.4V dropout at 7.5 amps, fast
transient response, internal current limiting and thermal
shutdown protection of the output device. The EZ1083
has both fixed and adjustable voltage options. These
devices are available in the popular TO-220 package.
Applications
The EZ1083 is used in industrial systems to provide power
to microprocessors and chipsets. It is also used to power
ASICs in control systems for medical applications.
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PC Motherboards
Microcontroller systems
Medical equipment
Low power microprocessor systems
Post regulation for switching power supplies
Telecommunication systems
Typical Application Circuit
Fixed Voltage Regulator
U1
3
VIN > 4.75V
+
IN
C1
10uF Tant.
EZ1083-3.3
2
TAB
OUT
VOUT = 3.3V
+
GND
C2
10uF Tant. Min.
1
Adjustable Voltage Regulator
3
VIN > 4.75V
+
C1
10uF Tant.
U1
IN
EZ1083
TAB
OUT
2
VOUT = 3.45V
R1
133 Ohm, 1%
ADJ
+
C2
10uF Tant. Min
1
R2
232 Ohm, 1%
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
Revision: December 21, 2005
1
R2 

VOUT = VREF •  1 +
 + I ADJ • R 2
R1 

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EZ1083
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied.
Parameter
Symbol
Maximum
Units
Input Supply Voltage
VIN
7
V
Power Dissipation
PD
Internally Limited
W
Thermal Resistance Junction to Case
θJ C
1.6
°C/W
Thermal Resistance Junction to Ambient
θJ A
50
°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
300
°C
Electrical Characteristics
Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 7.5A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 7.5A
Parameter
Output Voltage
(1)
Symbol
VIN
IO
TJ(5)
Min
Typ
Max
Units
VO
5V
0mA
25°C
0.985lVOl
VO
1.015lVOl
V
O.T.
0.98lVOl
VO
1.02lVOl
25°C
1.231
1.250
1.269
O.T.
1.225
1.250
1.275
25°C
0.015
0.2
O.T.
0.035
0.2
25°C
0.05
0.3
O.T.
0.2
0.4
25°C
1
O.T.
1.20
EZ1083-X.X
Reference Voltage
(1)
VREF
5V
10mA
EZ1083
Line Regulation
Load Regulation (1)
Dropout Voltage
10mA
REG(LINE)
(2)
REG(LOAD)
5V
VD
EZ1083, EZ1083-X.X
Current Limit
ICL
Quiescent Current
Fixed Voltage Version
IQ
Temperature
Coefficient
TC
 2005 Semtech Corp.
O.T.
5V
2
7.5
12
O.T.
0.005
%
%
V
1.40
9.5
O.T.
V
A
14
mA
%/°C
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EZ1083
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Adjust Pin Current
Symbol
VIN
IO
TJ(5)
IADJ
Min
25°C
Typ
55
O.T.
Adjust Pin Current
Change
∆IADJ
Temperature Stability
TS
5V
Minimum Load Current
Adj Voltage Version
IO
5V
RMS Output Noise(3)
VN
Ripple Rejection Ratio(4)
RA
5V
0.5A
7.5A
Max
Units
µA
90
O.T.
0.2
O.T.
0.5
O.T.
5
25°C
0.003
%VO
72
dB
O.T.
60
5
µA
%
10
mA
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 (CADJ for ADJ = 25µF).
(5) Over Temp. (O.T.) = over specified operating junction temperature range.
 2005 Semtech Corp.
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EZ1083
POWER MANAGEMENT
Pin Configuration
Ordering Information
Device
Package(3)
VOUT Volts(2)
TO-220
Fixed and Adjustable
EZ1083CT-X.X(1)
EZ1083CT-X.XT(4)
Notes:
(1) Where X.X denotes voltage options. Available
voltages are: 2.5V and 3.3V. Leave blank for adjustable version. Contact factory for additional voltage
options.
(2) Adjustable versions: output adjusts from 1.3V to
5.7V.
(3) Only available in tube packaging. A tube contains
50 devices.
(4) This product is fully WEEE and RoHS compliant.
Block Diagram
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EZ1083
POWER MANAGEMENT
Outline Drawing - TO-220
aaa
ØP
B A
DIM
A
A1
A2
b
b2
c
D
D1
D2
E
E1
E2
e
e1
H1
L
L1
N
ØP
Q
aaa
bbb
ccc
B
A
SEATING
PLANE
E
E2
A
E/2
A1
Q
H1
D2
D
D1
L1
C
L
c
3 x b2
3xb
bbb
DIMENSIONS
INCHES
MILLIMETERS
MIN NOM MAX MIN NOM MAX
.190 3.56
4.82
.055 0.51
1.40
.115 2.03
2.92
.027 .040 0.38 0.69 1.02
.057 .070 1.14 1.45 1.78
.024 0.36
0.61
.650 14.22
16.51
9.02
.355 8.38
.507 12.19
12.88
.420 9.65
10.66
.350 6.86
8.90
.030
0.76
.100 BSC
2.54 BSC
.200 BSC
5.08 BSC
.230
.270 5.84
6.86
.500
.580 12.70
14.73
.250
6.35
3
3
.139
.156 3.53
3.96
.100
.120 2.54
3.05
.014
0.36
.015
0.38
.010
0.25
.140
.020
.080
.015
.045
.014
.560
.330
.480
.380
.270
-
E1
A2
ccc
B A
B A
2x e
e1
NOTES:
1.
CONTROLLING DIMENSIONS ARE IN INCHES.
2. DIMENSIONS "D" AND "E" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
Contact Information
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
 2005 Semtech Corp.
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