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Электронный компонент: EZ1084CT-1.5

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1
www.semtech.com
EZ1084
5 Amp Positive Voltage Regulator
POWER MANAGEMENT
Revision 2, May 2003
The EZ1084 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at up to 5A. Additionally, the
EZ1084 series 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.
A variety of options are available for maximum flexibility:
the EZ1084C has both fixed and adjustable voltage
options and is designed for use in commercial applica-
tions and the EZ1084I is adjustable only for industrial
applications.
All devices are available in the popular TO-220 and
TO-263 packages.
Low dropout voltage: 1.3V max. for EZ1084C,
1.4V max. for EZ1084I
Full current rating over line and temperature
Fast transient response
2% total output regulation over line, load and
temperature
Adjust pin current max 90A over temperature
Fixed/adjustable output voltage (EZ1084C)
Line regulation typically 0.015%
Load regulation typically 0.05%
Industrial temperature range (EZ1084I)
TO-220 and TO-263 packages
Printer and plotter supplies
Instrumentation
Medical equipment
Microcontroller systems
Telecommunication systems
Motherboards
Switching supply post regulation
Description
Features
Applications
Fixed Voltage Regulator
Adjustable Voltage Regulator
Typical Application Circuit
VIN > 4.75V
VOUT = 3.45V
VOUT = 3.3V
VIN > 4.75V
U1
EZ1084
1
2
3
ADJ
OUT
IN
TAB
+
C2
10uF Tant. Min.
R1
133 Ohm, 1%
+
C1
10uF Tant.
U1
EZ1084C-3.3
1
2
3
GND
OUT
IN
TAB
R2
232 Ohm, 1%
+
C1
10uF Tant.
+
C2
10uF Tant. Min
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
2
R
I
1
R
2
R
1
V
V
ADJ
REF
OUT
+
+
=
2
2003 Semtech Corp.
www.semtech.com
EZ1084
POWER MANAGEMENT
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Unless otherwise specified: Adj. V
IN
= 2.75V to 7.0V and Adj. I
O
= 10mA to 5A; Fixed V
IN
= 4.75 to 7.0V and Fixed I
O
= 0 mA to 5A.
Values in bold apply over full operating ambient temperature range.
Absolute Maximum Ratings
Electrical Characteristics
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.
3
2003 Semtech Corp.
www.semtech.com
EZ1084
POWER MANAGEMENT
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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 ripple (C
ADJ
for ADJ = 25F).
Electrical Characteristics (Cont)
Unless otherwise specified: Adj. V
IN
= 2.75V to 7.0V and Adj. I
O
= 10mA to 5A; Fixed V
IN
= 4.75 to 7.0V and Fixed I
O
= 0 mA to 5A.
Values in bold apply over full operating ambient temperature range.
4
2003 Semtech Corp.
www.semtech.com
EZ1084
POWER MANAGEMENT
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Notes:
(1) Where X.X denotes voltage options (EZ1084C only).
Available voltages are: 1.5V, 2.5V and 3.3V. Leave blank
for adjustable version (1.3 to 5.7V). Contact factory for
additional voltage options.
(2) Where C and I denote Commercial (0C to 70C)
and Industrial (-40C to 85C) ambient temperature
ranges.
(3) Only available in tape and reel packaging. A reel
contains 800 devices.
(4) Only available in tube packaging. A tube contains 50
devices.
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Pin Configurations
Ordering Information
Pin Descriptions
Block Diagram
5
2003 Semtech Corp.
www.semtech.com
EZ1084
POWER MANAGEMENT
Outline Drawing - TO-220
Outline Drawing - T0-263