General Description

The MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/

MAX4995C programmable current-limit switches feature

internal current limiting to prevent damage to host

devices due to faulty load conditions. These analog

switches feature a low 130m

Ω (typ) on-resistance and

operate from a +1.7V to +5.5V input voltage range. The

current limit is adjustable from 50mA to 600mA, making

these devices ideal for SDIO (secure digital input/out-

put) and other load-switching applications.

Each device in the family handles an overcurrent event

differently depending on the option selected. The

MAX4995A/MAX4995AF/MAX4995AL go into an autoretry

mode, the MAX4995B latches off the switch, and the

MAX4995C places the device in a continuous current-limit

mode. Additional safety features include thermal shut-

down to prevent overheating and reverse-current blocking

to prevent current from being driven back into the source.

The MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/

MAX4995C are available in a tiny 10-pin, 1.4mm x 1.8mm

UTQFN package and operate over the -40°C to +125°C

extended temperature range.

Applications

SDIO Ports

USB Ports

Notebook VGA Ports

GPS

Cell Phones

MP3 Players

UTCA/ATCA Platforms

Features

o 50mA to 600mA Programmable Current Limit

o ±10% Accurate Current Limit

o Overload FLAG Threshold

o Low Dropout Voltage

o Short-Circuit Protection

o Thermal Shutdown

o Reverse-Current Protection

o 170µA (typ) Supply Current

o +1.7V to +5.5V Supply Voltage Range

o Tiny 10-Pin, 1.4mm x 1.8mm UTQFN Package

50mA to 600mA Programmable

Current-Limit Switches

________________________________________________________________

Maxim Integrated Products

1

Ordering Information/Selector Guide

19-4363; Rev 1; 6/09

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.

All devices operate over the -40°C to +125°C temperature range.

+Denotes a lead(Pb)-free/RoHs–compliant package. T = Tape and reel.

*Future product. Contact factory for availability.

Ordering Information/Selector Guide continued at end of data sheet.

PART

PIN-

PACKAGE

ON POLARITY

OVERCURRENT

RESPONSE

SHORT-CIRCUIT

RESPONSE

TOP MARK

MAX4995AAUT+T*

6 SOT23

ActIve-High

Autoretry

Normal

+ACNZ

MAX4995AAVB+T

10 UTQFN

Active-High

Autoretry

Normal

+AAM

MAX4995AFAUT+T*

6 SOT23

Active-High

Autoretry

Fast

+ACOE

MAX4995AFAVB+T

10 UTQFN

Active-High

Autoretry

Fast

+AAR

MAX4995ALAUT+T*

6 SOT23

Active-Low

Autoretry

Normal

+ACDA

Typical Operating Circuit appears at end of data sheet.

Pin Configurations

35

10

8

IN

* ( ) FOR THE MAX4995AL ONLY.

OUT

MAX4995A/MAX4995AF

MAX4995AL/MAX4995B

MAX4995C

4

9

N.C.

ON (ON)* GND

1.4mm x 1.8mm

UTQFN

TOP VIEW

SETI

7

OUT

1

IN

6

N.C.

2

FLAG

Pin Configurations continued at end of data sheet.