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EZ1584C & EZ1584I

7.0 Amp Low Dropout

Positive Voltage Regulators

POWER MANAGEMENT

June 23, 2010

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.

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

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

Description

Features

Applications

Fixed Voltage Regulator

Adjustable Voltage Regulator

Typical Application Circuit

VIN > 4.75V

VOUT = 3.3V

VOUT = 3.3V

VIN > 4.75V

U1

EZ1584

1

2

3

ADJ

OUT

IN

TAB

+

C2

10uF Tant. Min.

R1

124 Ohm, 1%

+

C1

10uF Tant.

U1

EZ1584-3.3

1

2

3

GND

OUT

IN

TAB

R2

205 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

•

+











 +

•

=