ez1583ct Semtech Corporation, ez1583ct Datasheet
ez1583ct
Manufacturer Part Number
ez1583ct
Description
Ez1581 Dual Input Low Dropout Regulator | Semtech
Manufacturer
Semtech Corporation
Datasheet
1.EZ1583CT.pdf
(6 pages)
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The EZ158X family of high performance positive voltage
regulators are designed for use in applications requiring
very low dropout voltage at up to 7, 5, 3 and 1.5 amps.
Capable of supplying up to 2.8V on boards where both
5V and 3.3V supplies are available, the superior dropout
characteristics of the EZ158X result in reduced heat
dissipation compared to regular LDOs. This allows for
heatsink size reduction or elimination. Additionally, the
EZ158X provides excellent regulation over variations in
line, load and temperature. Remote sense operation
allows compensating for trace, connector and other
resistive losses.
Outstanding features include very low dropout
performance at rated current, fast transient response,
remote sense, internal current limiting, thermal shutdown
and safe operating area protection of the output device.
The EZ158X is a five terminal adjustable or fixed 2.5V
voltage regulator available in the popular 5 pin TO-220
and TO-263 plastic packages.
Revision: October 29, 2003
POWER MANAGEMENT
Description
Typical Application Circuits
Adjustable Output Parts
Fixed Output Parts
Notes:
(1) Capacitor values are for reference only. Good quality, low ESR tantalum or aluminum electrolytic capacitors
should be used. Increasing the value of the output capacitor will improve the overall transient response.
(2) If the same voltage is input to both PWR and CTL, then the dropout voltage will become 1.3V maximum.
(3) A small (~0.033µF) capacitor can be used to bypass the ADJ pin to improve transient response, if needed.
5V CONTROL IN
3.3V POWER IN
5V CONTROL IN
3.3V POWER IN
GROUND
(3)
GROUND
C1
33uF
C1
33uF
5
4
C2
10uF
PWR
CTL
U1
5
4
C2
10uF
PWR
CTL
U1
1
2
SNS
ADJ
EZ158XCX
1
GND
2
SNS
OUT
3
EZ158XCX-2.5
1
OUT
Dual Input Low Dropout Regulator
Features
Applications
R1
124
R2
124
3
540mV dropout @ 7A in dual supply mode
(EZ1580)
Remote sense operation
Fast transient response
0.5% initial accuracy
Line regulation typically 0.08%
Load regulation typically 0.08%
5 Pin TO-220 and TO-263 packages
Microprocessor supplies
Split plane microprocessor supplies
Advanced graphics cards
Sound cards
Low voltage logic supplies
Switching power supply post regulation
VREF
C3
68uF
C3
68uF
2.5V OUT
GROUND
2.5V OUT
GROUND
V
OUT
EZ1582/EZ1583
EZ1580/EZ1581
V
REF
1
R
R
2
1
www.semtech.com
I
ADJ
R
2
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ez1583ct Summary of contents
Page 1
POWER MANAGEMENT Description The EZ158X family of high performance positive voltage regulators are designed for use in applications requiring very low dropout voltage and 1.5 amps. Capable of supplying up to 2.8V on boards ...
Page 2
POWER MANAGEMENT Absolute Maximum Ratings ...
Page 3
POWER MANAGEMENT Electrical Characteristics (Cont.) Unless specified 0V, C OUT SNS ADJ CTL ...
Page 4
POWER MANAGEMENT Pin Configurations Block Diagram Pin Descriptions ...
Page 5
POWER MANAGEMENT Applications Information The EZ158X is a low dropout regulator designed to power low voltage microcontrollers, graphics ICs, sound cards etc. The dropout voltage is minimized by utilizing a separate input voltage which should exceed V CTL ...
Page 6
... POWER MANAGEMENT Minimum Land Pattern - TO-263-5 Contact Information Phone: (805)498-2111 FAX (805)498-3804 2003 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 6 EZ1580/EZ1581 EZ1582/EZ1583 www.semtech.com ...