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EZ1584C_10 Datasheet, PDF (1/5 Pages) Semtech Corporation – 7.0 Amp Low Dropout Positive Voltage Regulators | |||
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POWER MANAGEMENT
Description
The EZ1584 is a high performance positive voltage
regulator designed for use in applications requiring low
dropout performance at 7A. Additionally, the EZ1584
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.
The EZ1584 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 and no
ripple.
A variety of options are available for maximum flexibility:
the EZ1584C is intended for commercial applications and
has both fixed and adjustable voltage options; the
EZ1584I is intended for industrial applications and has
a 3.3V fixed and an adjustable option. All devices are
available in the popular TO-220 package.
Typical Application Circuit
EZ1584C & EZ1584I
7.0 Amp Low Dropout
Positive Voltage Regulators
Features
 Low dropout performance: 1.3V max. for EZ1584C
and 1.4V max. for EZ1584I
 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%
 Industrial temperature range (EZ1584I)
 TO-220 package
Applications
 Memory supply
 Graphics core supply
 Other 2.5V to 3.6V microprocessor supplies
 Low voltage logic supplies
 Battery-powered circuitry
 Post regulator for switching supply
 Telecom supplies
 Industrial supplies
Fixed Voltage Regulator
VIN > 4.75V
U1
3
IN
EZ1584-3.3
TAB
2
OUT
VOUT = 3.3V
+ C1
10uF Tant.
GND
1
+ C2
10uF Tant. Min.
Adjustable Voltage Regulator
VIN > 4.75V
U1
3
IN
+ C1
10uF Tant.
EZ1584
TAB
2
OUT
ADJ
1
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
June 23, 2010
1
VOUT = 3.3V
R1
124 Ohm, 1%
+ C2
10uF Tant. Min
R2
205 Ohm, 1%
VOUT
=
VREF
â¢
1 +
ï£
R2
R1


+
IADJ
⢠R2
www.semtech.com
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