General Description

The MAX8869 low-dropout linear regulator operates

from a +2.7V to +5.5V input and delivers a guaranteed

1A load current with a low 200mV dropout. The high-

accuracy (±1%) output voltage is preset at +5V, +3.3V,

+2.5V, +1.8V, or +1.0V or is adjustable from +0.8V to

+5V with an external resistor-divider.

requires only a small 1µF output capacitor for guaran-

teed stability. An internal PMOS pass transistor allows

low 500µA supply current, making this regulator useful

for networking and telecom hardware as well as bat-

tery-operated equipment. Other features include soft-

start, low-power shutdown, short-circuit protection, and

thermal shutdown protection.

The MAX8869 is available in a 1.5W, 16-pin TSSOP

package, which is 30% smaller than a SOT223 and only

1.1mm high.

________________________Applications

Telecom Hardware

Network Equipment

Mobile Phone Base Stations

Personal Computers

Notebook Computers

Features

o Guaranteed 1A Output Current

o Low 200mV Dropout at 1A

o ±1% Output Voltage Accuracy

Preset at +5V, +3.3V, +2.5V, +1.8V, or +1.0V

and Adjustable from +0.8V to +5.0V

o 54dB PSRR at 100kHz

o Adjustable Soft-Start

o 3ms Reset Output

o Foldback Output Current Limit

o Thermal Overload Protection

o High-Power 16-Pin TSSOP Package (1.5W)

30% Smaller than SOT223 (Only 1.1mm High)

1A, Microcap, Low-Dropout,

Linear Regulator

________________________________________________________________

Maxim Integrated Products

1

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

N.C.

N.C.

OUT

OUT

OUT

OUT

SET

GND

N.C.

TOP VIEW

MAX8869

TSSOP-EP

IN

IN

RST

IN

IN

SHDN

SS

Pin Configuration

IN

IN

IN

IN

SHDN

SS

OUT

OUT

OUT

OUT

RST

SET

GND

ON

OFF

1

μF

1

μF

+2.7V TO +5.5V

UP TO 1A

RESET

OUTPUT

MAX8869

Typical Operating Circuit

19-1692; Rev 1; 3/11

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

Microcap is a registered trademark of American Technical

Ceramics Corp.

PART

PIN-PACKAGE

MAX8869EUE50+

16 TSSOP-EP**

+5.0

MAX8869EUE33+

16 TSSOP-EP**

+3.3

MAX8869EUE25+

16 TSSOP-EP**

+2.5

MAX8869EUE18+

16 TSSOP-EP**

+1.8

MAX8869EUE10+

16 TSSOP-EP**

+1.0

Note: All devices are specified over the -40°C to +85°C

temperature range.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

*

Or adjustable from +0.8V to +5.0V. Contact factory for other

preset output voltages.

**

EP = Exposed pad.