MAX4995A_09 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – 50mA to 600mA Programmable Current-Limit Switches

19-4363; Rev 1; 6/09
50mA to 600mA Programmable
Current-Limit Switches
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
Typical Operating Circuit appears at end of data sheet.
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
TOP VIEW
Pin Configurations
IN N.C. OUT
10 9 8
IN 1
FLAG 2
MAX4995A/MAX4995AF
MAX4995AL/MAX4995B
MAX4995C
7 OUT
6 N.C.
3 45
ON (ON)* GND SETI
1.4mm x 1.8mm
UTQFN
* ( ) FOR THE MAX4995AL ONLY.
Pin Configurations continued at end of data sheet.
Ordering Information/Selector Guide
PART
PIN-
PACKAGE
ON POLARITY
OVERCURRENT
RESPONSE
MAX4995AAUT+T*
6 SOT23
ActIve-High
Autoretry
MAX4995AAVB+T
10 UTQFN
Active-High
Autoretry
MAX4995AFAUT+T*
6 SOT23
Active-High
Autoretry
MAX4995AFAVB+T
10 UTQFN
Active-High
Autoretry
MAX4995ALAUT+T*
6 SOT23
Active-Low
Autoretry
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.
SHORT-CIRCUIT
RESPONSE
Normal
Normal
Fast
Fast
Normal
TOP MARK
+ACNZ
+AAM
+ACOE
+AAR
+ACDA
________________________________________________________________ Maxim Integrated Products 1
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.