SEMTECH EZ1082_07

EZ1082
10.0A Positive
Voltage Regulator
POWER MANAGEMENT
Description
Features
The EZ1082 is a high performance positive voltage
regulator designed for use in applications requiring low
dropout performance at 10A. Additionally, the EZ1082
provides excellent regulation over variations in line, load
and temperature.
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Features include 1.4V dropout at 10A, fast transient
response, internal current limiting and thermal shutdown
protection of the output device. The EZ1082 series are
three terminal regulators with fixed and adjustable
voltage options available in the popular TO-220
package.
Low dropout performance, 1.4V max.
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 3 pin package. Available in Pb-free
plating, RoHS compliant
Applications
The EZ1082 is an excellent choice for powering
microprocessor systems. Using an LDO eliminates
MOSFETs and inductors saving both space and cost. An
LDO also provides better transient response with no ripple
to the load.
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High current microprocessor supplies
Post regulators
Microprocessor systems
Medical equipment
Embedded systems
Post regulation for switching supplies
Telecommunication systems
Typical Application Circuit
Fixed Voltage Regulator
U1
3
VIN > 4.75V
+
IN
C1
10uF Tant.
EZ1082-3.3
2
TAB
OUT
VOUT = 3.3V
+
GND
C2
10uF Tant. Min.
1
Adjustable Voltage Regulator
U1
3
VIN > 4.75V
+
C1
10uF Tant.
IN
EZ1082
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: August 1, 2007
1
R2 

VOUT = VREF •  1 +
 + I ADJ • R 2
R1 

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EZ1082
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
3
°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 10.0A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 10.0A
Parameter
Output Voltage
(1)
Symbol
VIN
IO
TJ(4)
Min
Typ
Max
Units
VO
5V
OmA
25°C
0.99lVOl
VO
1.01lVOl
V
O.T.
0.98lVOl
VO
1.02lVOl
25°C
1.238
1.250
1.262
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
1.2
O.T.
1.2
Fixed Voltage Version
Reference Voltage
(1)
VREF
5V
10mA
Adj Voltage Version
Line Regulation (1)
Load Regulation (1)
Dropout Voltage
REG(LINE)
REG(LOAD)
10mA
5V
VD
∆VOUT, ∆VREF = 1%
Current Limit
ICL
Quiescent Current
Fixed Voltage Version
IQ
Temperature Coefficient
TC
 2007 Semtech Corp.
O.T.
5V
2
10.0
12
O.T.
0.005
%
%
V
1.4
12
O.T.
V
A
14
mA
%/°C
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EZ1082
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Adjust Pin Current
Symbol
VIN
IO
TJ(4)
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(2)
VN
Ripple Rejection Ratio(3)
RA
5V
0.5A
10.0A
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) Bandwidth of 10 Hz to 10 kHz.
(3) 120 Hz input ripple (CADJ for ADJ = 25µF).
(4) Over Temp. (O.T.) = over specified operating junction temperature range.
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EZ1082
POWER MANAGEMENT
Pin Configuration
Ordering Information
Device(1)(2)
EZ1082CT-X.XT
Package(3)
TO-220
Notes:
(1) Where X.X denotes voltage options. Available
voltages are: 2.5V and 3.3V. Leave blank for adjustable version (1.3 to 5.7V). Contact factory for additional voltage options.
(2) Only available in tube packaging. A tube contains
50 devices.
(3) Available in Pb-free plating, RoHS compliant.
Block Diagram
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EZ1082
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
MILLIMETERS
INCHES
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
.355 8.38
9.02
.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
.580 12.70
14.73
.500
.250
6.35
3
3
.139
.156 3.53
3.96
.120 2.54
3.05
.100
.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
 2007 Semtech Corp.
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