EZ1584C & EZ1584I
7.0 Amp Low Dropout
Positive Voltage Regulators
POWER MANAGEMENT
Description
ꢀeatures
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.
u Low dropout performance: 1.3V max. for EZ1584C
and 1.4V max. for EZ1584I
u ꢀull current rating over line and temperature
u ꢀast transient response
u ±2% total output regulation over 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.
u Adjust pin current max 90µA over temperature
u ꢀixed/adjustable output voltage
u Line regulation typically 0.015%
u Load regulation typically 0.05%
u Industrial temperature range (EZ1584I)
u TO-220 package
The EZ1584 is an excellent choice for powering
microprocessor systems. Using an LDO eliminates
MOSꢀETs and inductors, saving both space and cost. An
LDO also provides better transient response and no
ripple.
Applications
u Memory supply
u Graphics core supply
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.
u Other 2.5V to 3.6V microprocessor supplies
u Low voltage logic supplies
u Battery-powered circuitry
u Post regulator for switching supply
u Telecom supplies
u Industrial supplies
Typical Application Circuit
ꢀixed Voltage Regulator
U1
EZ1584-3.3
3
2
TAB
VIN > 4.75V
VOUT = 3.3V
IN
OUT
+
+
C1
10uF Tant.
C2
GND
1
10uF Tant. Min.
Adjustable Voltage Regulator
U1
IN
EZ1584
OUT
3
2
TAB
VIN > 4.75V
VOUT = 3.3V
+
+
C1
R1
C2
10uF Tant.
ADJ
1
124 Ohm, 1%
10uF Tant. Min
R2
205 Ohm, 1%
R2
R1
VOUT = VREF • 1+
+ IADJ • R2
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
Revision 3, July 2001
1
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