MAX6495ATT+ Maxim Integrated Products, MAX6495ATT+ Datasheet

MAX6495ATT+

Manufacturer Part Number

MAX6495ATT+

Description

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX6495ATT.pdf (16 pages)

Specifications of MAX6495ATT+

Pack_quantity

Comm_code

85423990

Lead_time

175

Current page: 1 of 16
Download datasheet (682Kb)

The MAX6495–MAX6499 is a family of small, low-cur-

rent, overvoltage-protection circuits for high-voltage

transient systems such as those found in automotive

and industrial applications. These devices monitor the

input voltage and control an external n-channel MOSFET

switch to isolate the load at the output during an input

overvoltage condition. The MAX6495–MAX6499 operate

over a wide supply voltage range from +5.5V to +72V.

The gate of the n-channel MOSFET is driven high while

the monitored input is below the user-adjustable over-

voltage threshold. An integrated charge-pump circuit

provides a 10V gate-to-source voltage to fully enhance

the n-channel MOSFET. When the input voltage

exceeds the user-adjusted overvoltage threshold, the

gate of the MOSFET is quickly pulled low, disconnect-

ing the load from the input. In some applications, dis-

connecting the output from the load is not desirable. In

these cases, the protection circuit can be configured to

act as a voltage limiter where the GATE output saw-

tooths to limit the voltage to the load (MAX6495/

MAX6496/MAX6499).

The MAX6496 supports lower input voltages and

reduces power loss by replacing the external reverse

battery diode with an external series p-channel MOSFET.

The MAX6496 generates the proper bias voltage to

ensure that the p-channel MOSFET is on during normal

operations. The gate-to-source voltage is clamped dur-

ing load-dump conditions, and the p-channel MOSFET

is off during reverse-battery conditions.

The MAX6497/MAX6498 feature an open-drain, undedi-

cated comparator that notifies the system if the output

falls below the programmed threshold. The MAX6497

keeps the MOSFET switch latched off until either the

input power or the SHDN pin is cycled. The MAX6498

will autoretry when V

These devices are available in small, thermally

enhanced, 6-pin and 8-pin TDFN packages and are

fully specified from -40°C to +125°C.

19-3778; Rev 1; 12/05

FireWire is a registered trademark of Apple Computer, Inc.

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

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

72V, Overvoltage-Protection Switches/Limiter

Automotive

Industrial

Telecom/Servers/Networking

FireWire

Notebook Computers

________________________________________________________________ Maxim Integrated Products

OVSET

General Description

Controllers with an External MOSFET

falls below 130mV.

Applications

♦ Wide Supply Voltage Range: +5.5V to +72V

♦ Overvoltage-Protection Switch Controller Allows

♦ Fast Gate Shutoff During Overvoltage with 100mA

♦ Internal Charge-Pump Circuit Ensures 10V

♦ n-Channel MOSFET Latches Off After an

♦ Adjustable Overvoltage Threshold

♦ Thermal Shutdown Protection

♦ Supports Series p-Channel MOSFET for Reverse-

♦ POK Indicator (MAX6497/MAX6498)

♦ Adjustable Undervoltage Threshold (MAX6499)

♦ -40°C to +125°C Operating Temperature Range

♦ Small, 3mm x 3mm TDFN Package

Ordering Information continued at end of data sheet.

+Denotes lead-free package.

Selector Guide appears at end of data sheet.

MAX6495ATT+T

MAX6496ATA+T

Pin Configurations continued at end of data sheet.

User to Size External n-Channel MOSFETs

Sink Capability

Gate-to-Source Enhancement for Low R

Performance

Overvoltage Condition (MAX6497/MAX6499)

Battery Voltage Protection (MAX6496)

TOP VIEW

PART

-40°C to +125°C

TEMP RANGE

3mm x 3mm TDFN

OUTFB

Ordering Information

MAX6495

Pin Configurations

SHDN

GATE

OVSET

GND

PIN-

PACKAGE

6 TDFN-6

8 TDFN-8

Features

DS(ON)

MARK

TOP

AJM

AOF

Related parts for MAX6495ATT+

Related keywords

MAX6495ATT+ datasheet
MAX6495ATT+ data sheet
MAX6495ATT+ pdf datasheet
MAX6495ATT+ component
MAX6495ATT+ part
MAX6495ATT+ distributor
MAX6495ATT+ RoHS
MAX6495ATT+ datasheet download