General Description

The MAX8891/MAX8892 low-dropout (LDO) linear regu-

lators are designed to deliver up to 150mA continuous

output current. These regulators achieve a low 120mV

dropout for 120mA load current.

The MAX8891 only requires an input/output capacitor,

hence achieving the smallest PCB area. The

MAX8892’s output voltage can be adjusted with an

external divider.

The MAX8891 is preset to a variety of voltages in the

1.5V to 4.5V range. Designed with a p-channel

MOSFET series pass transistor, the MAX8891/MAX8892

maintain very low ground current (40µA).

The regulators are designed and optimized to work with

low-value, low-cost ceramic capacitors. The MAX8891/

MAX8892 require only 1µF (typ) of output capacitance

for stability with any load. When disabled, current con-

sumption drops to below 1µA.

These regulators are available in a tiny 5-pin SC70

package.

Applications

Cellular and Cordless Phones

PDA and Palmtop Computers

Base Stations

Bluetooth Portable Radios and Accessories

Wireless LANs

Digital Cameras

Personal Stereos

Portable and Battery-Powered Equipment

Features

♦ Space-Saving SC70 Package

♦ 65dB PSRR at 10kHz

♦ 120mV Dropout at 120mA Load

♦ Stable with 1µF Ceramic Capacitor for Any Load

♦ Guaranteed 150mA Output

♦ Only Need Input and Output Capacitors (MAX8891)

♦ Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V,

2.85V, 3V, 3.3V, 4.5V (MAX8891) and Adjustable

(MAX8892)

♦ Low 40µA Ground Current

♦ Excellent Load/Line Transient

♦ Overcurrent and Thermal Protection

High PSRR, Low-Dropout, 150mA

Linear Regulators

MAX8891/MAX8892

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

GND

N.C. (MAX8891)

FB (MAX8892)

SHDN

1

2

3

5

4

OUT

IN

MAX8891/

MAX8892

SC70

+

TOP VIEW

Pin Configuration

MAX8891

OUTPUT PRESET

1.5V TO 4.5V

IN

INPUT

2V TO 6V

OFF

SHDN

μF

μF

OUT

ON

GND

MAX8892

OUTPUT ADJUSTABLE

1.5V TO 4.5V

IN

INPUT

2V TO 6V

OFF

SHDN

R1

R2

μF

μF

OUT

ON

FB

GND

Typical Operating Circuits

Ordering Information

19-4537; Rev 1; 12/11

*

xy is the output voltage code (see Output Voltage Selector

Guide). Other versions between 1.5V and 4.5V are available in

100mV increments. Contact factory for other versions.

+

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

/V denotes an automotive qualified part.

PART*

TEMP RANGE

PIN-PACKAGE

MAX8891EXKxy+T

-40°C to +85°C

5 SC70

MAX8891EXKxy/V+T

-40°C to +85°C

5 SC70

MAX8892EXK+T

-40°C to +85°C

5 SC70

Output Voltage Selector Guide appears at end of data sheet.