_______________General Description

The MAX1614 drives high-side, n-channel power MOSFETs

to provide battery power-switching functions in portable

equipment. The n-channel power MOSFETs typically have

one-third the on-resistance of p-channel MOSFETs of simi-

lar size and cost. An internal micropower regulator and

charge pump generate the high-side drive output voltage,

while requiring no external components.

The MAX1614 also features a 1.5%-accurate low-battery

comparator that can be used to indicate a low-battery

condition, provide an early power-fail warning to the sys-

tem microprocessor, or disconnect the battery from the

load, preventing deep discharge and battery damage. An

internal latch allows for pushbutton on/off control with very

low current consumption. Off-mode current consumption

is only 6µA while normal operation requires less than

25µA. The MAX1614 is available in the space-saving

than a standard 8-pin SO.

________________________Applications

Notebook Computers

Portable Equipment

Hand-Held Instruments

Battery Packs

____________________________Features

o Internal On/Off Latch

o High-Side, n-Channel Power MOSFET Drive

o 25µA (max) Quiescent Current

o 6µA (max) Off Current

o Requires No External Components

o 1.5%-Accurate Low-Battery Detector

o Space-Saving µMAX Package

o 5V to 26V Input Voltage Range

o Drives Single or Back-to-Back MOSFETs

o Controlled Turn-On for Low Inrush Current

High-Side, n-Channel MOSFET

Switch Driver

________________________________________________________________

Maxim Integrated Products

1

1

+

2

3

4

8

7

6

5

BATT

SRC

GATE

GND

LBI

LBO

OFF

ON

MAX1614

µMAX

TOP VIEW

PART

TEMP RANGE

PIN-PACKAGE

MAX1614C/D

0°C to +70°C

Dice*

MAX1614EUA+

-40°C to +85°C

8 µMAX

MAX1614EUA/V+

-40°C to +85°C

8 µMAX

__________________Pin Configuration

MAX1614

OFF

LBO

GND

LBI

BATT

SRC

GATE

ON

NN

LOAD

OPTIONAL FOR

REVERSE CURRENT

PROTECTION

R1

R2

__________Typical Operating Circuit

19-1176; Rev 1; 6/11

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

*

Contact factory for dice specifications.

+

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

/V denotes an automotive qualified part.

Devices are also available in a tape-and-reel package.

Specify tape-and-reel by adding “T” to the part number when

ordering.

µMAX is a registered trademark of Maxim Integrated Products, Inc.