Rainbow-electronics MAX4995 Manual de usuario descargar pdf (Pagina 1)

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 130mΩ (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

♦ 50mA to 600mA Programmable Current Limit

♦ ±10% Accurate Current Limit

♦ Overload FLAG Threshold

♦ Low Dropout Voltage

♦ Short-Circuit Protection

♦ Thermal Shutdown

♦ Reverse-Current Protection

♦ 170µA (typ) Supply Current

♦ +1.7V to +5.5V Supply Voltage Range

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

MAX4995A/AF/AL/MAX4995B/MAX4995C

50mA to 600mA Programmable

Current-Limit Switches

________________________________________________________________

Maxim Integrated Products

Ordering Information/Selector Guide

19-4363; Rev 0; 11/08

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-free package.

*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

MAX4995AAUK+T* 6 SOT23 ActIve-High Autoretry Normal +ACNZ

MAX4995AAVB+T 10 UTQFN Active-High Autoretry Normal +AAM

MAX4995AFAUK+T*

6 SOT23 Active-High Autoretry Fast +ACOE

MAX4995AFAVB+T 10 UTQFN Active-High Autoretry Fast +AAR

MAX4995ALAUK+T*

6 SOT23 Active-Low Autoretry Normal +ACDA

Typical Operating Circuit appears at end of data sheet.

Pin Configurations

10 8

* ( ) FOR THE MAX4995AL ONLY.

OUT

MAX4995A/MAX4995AF

MAX4995AL/MAX4995B

MAX4995C

N.C.

ON (ON)* GND

1.4mm x 1.8mm

UTQFN

TOP VIEW

SETI

7 OUT1IN

6 N.C.2FLAG

Pin Configurations continued at end of data sheet.

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1 - Current-Limit Switches

General DescriptionThe MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/MAX4995C programmable current-limit switches featureinternal current limiting to prevent

Pagina 2

MAX4995A/AF/AL/MAX4995B/MAX4995C50mA to 600mA ProgrammableCurrent-Limit Switches10 ___________________________________________________________________

Pagina 3