Transcript
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
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.
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
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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.
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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
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