EZ1084 데이터 시트보기 (PDF) - Semtech Corporation
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EZ1084 Datasheet PDF : 6 Pages
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EZ1084
5 Amp Positive Voltage Regulator
POWER MANAGEMENT
Description
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.
Typical Application Circuit
Features
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 90µA 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. Available in RoHS
compliant package
Applications
Printer and plotter supplies
Instrumentation
Medical equipment
Microcontroller systems
Telecommunication systems
Motherboards
Switching supply post regulation
Fixed Voltage Regulator
VIN > 4.75V
U1
3 IN
+ C1
10uF Tant.
EZ1084C-3.3
TAB OUT 2
GND
1
VOUT = 3.3V
+ C2
10uF Tant. Min.
Adjustable Voltage Regulator
VIN > 4.75V
U1
3
IN
EZ1084
TAB
2
OUT
+ C1
10uF Tant.
ADJ
1
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
VOUT = 3.45V
R1
133 Ohm, 1%
+ C2
10uF Tant. Min
R2
232 Ohm, 1%
VOUT
= VREF
•
1 +
R2
R1
+
IADJ
• R2
Revision: January 25, 2006
1
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