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Analog Devices Inc./Maxim Integrated MAX6495ATT+
- Part No.:
- MAX6495ATT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized ICs
- Package:
- 6-WDFN Exposed Pad
- Description:
- IC OVERVOLTAGE PROT CTRL 6TDFN
- Quantity:
Unit Price:$0
Ext Price:$0
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Product Details
MAX6495ATT+ - 72 V Overvoltage-Protection Switch / Limiter Controller
MAX6495ATT+ from Analog Devices / Maxim Integrated controls an external n-channel MOSFET to disconnect a load during an overvoltage event or limit output voltage in a suitably designed circuit. The orderable device is offered in a 6-pin, 3 mm × 3 mm TDFN exposed-pad package; the LCDChip catalog records the equivalent package class as 6-WDFN Exposed Pad.
Engineering data below reflects the manufacturer's MAX6495–MAX6499 Rev. 18 datasheet and the MAX6495 model listing. Confirm board-level limits and the selected external MOSFET before use.
Overview
The MAX6495ATT+ monitors a resistor-programmed overvoltage threshold at OVSET and drives the GATE of a separate n-channel MOSFET. In a switch configuration, an overvoltage event pulls GATE low and isolates the downstream load. In a limiter configuration, sensing the output allows the control loop to cycle the MOSFET gate around the selected limit. The IC is a controller, not an integrated high-current pass switch.
Key Advantages
Wide input range
Operates from 5.5 V to 72 V, supporting high-voltage transient-prone systems.
Adjustable trip point
An external divider sets the OVSET overvoltage threshold for the protected rail.
External MOSFET flexibility
The designer selects the n-channel pass device for current, safe operating area, and thermal requirements.
Compact footprint
Six-pin, 3 mm × 3 mm TDFN exposed-pad packaging supports space-constrained power paths.
Feature Summary
Switch or limiter topology
OVSET divider placement selects input overvoltage disconnect or output-voltage limiting behavior.
Charge-pump gate drive
The integrated charge pump enhances the external nMOSFET gate above the monitored rail under normal conditions.
Shutdown control
Driving SHDN low forces GATE low and turns the external MOSFET off.
Fault response
Fast GATE pull-down protects the load after the programmed OVSET threshold is crossed.
Package & Footprint
The manufacturer lists MAX6495ATT+ as a 6-pin TDFN exposed-pad device; the family datasheet specifies a 3 mm × 3 mm TDFN and package-code family T633. LCDChip's recorded package name is 6-WDFN Exposed Pad. Match the exact manufacturer outline and land pattern to the PCB footprint before placing the part.
- Confirm six-pin orientation and pin 1 in the manufacturer drawing.
- Connect the exposed pad to the ground plane as directed by the datasheet.
- Review thermal resistance and MOSFET fault dissipation at board level.
The catalog package image is pending: the expected JPG is not available on the production site. Use the manufacturer's controlled outline, not this placeholder image path, for footprint decisions.
Pin Functions
The following MAX6495 pin assignments are taken from the manufacturer's six-pin top-view diagram and pin-description table.
Positive supply input; bypass to GND as specified in the datasheet.
Shutdown input; low disables the external MOSFET gate drive.
Overvoltage-threshold adjustment input for an external resistor divider.
Ground reference.
Charge-pump gate-drive output for the external nMOSFET.
Output-voltage sense input, connected to the external MOSFET source.
Exposed pad: internally connected to GND; connect to the ground plane for a low thermal-resistance path.
Key Specifications
| Function | External-nMOSFET overvoltage switch / limiter controller |
|---|---|
| Operating supply | 5.5 V to 72 V |
| Operating temperature | −40 °C to +125 °C |
| OVSET rising threshold | 1.24 V typical; 1.22 V minimum, 1.26 V maximum for MAX6495/MAX6496 |
| OVSET falling threshold | 1.18 V typical for MAX6495/MAX6496 |
| Input UVLO, rising | 5 V typical; 4.75 V minimum, 5.25 V maximum |
| Normal-mode supply current | 100 µA typical, 150 µA maximum, no load with SHDN high |
| Shutdown supply current | 24 µA typical, 32 µA maximum for MAX6495/MAX6496 with SHDN low |
| Gate enhancement | Approximately 10 V typical above IN at VIN ≥ 14 V under the stated datasheet condition |
| Gate pull-down capability | 100 mA specified fault-response sink capability |
| Package | 6-pin 3 mm × 3 mm TDFN-EP; catalog: 6-WDFN Exposed Pad |
| Automotive qualification | Do not assume AEC-Q100 for MAX6495ATT+; the manufacturer's /V variant is the identified automotive-qualified option |
Electrical-characteristics table conditions: VIN = 14 V, CGATE = 6 nF, TA = −40 °C to +125 °C unless otherwise noted; typical values are at +25 °C. Consult the full datasheet for all limit and test conditions.
Replacement Considerations
MAX6495ATT+T is the tape-and-reel ordering form shown in the manufacturer's table; confirm procurement packaging before substituting it for MAX6495ATT+. MAX6495ATT/V+ is an automotive-qualified ordering variant, subject to separate qualification and ordering checks. Other MAX6496–MAX6499 family members differ in pin count or added functions and are not asserted to be pin-compatible. Compare threshold behavior, latch/autoretry mode, pinout, qualification and footprint before any substitution.
No LCDChip internal replacement link is asserted without an exact catalog match.
Manufacturer Information
MAX6495ATT+ is listed by Analog Devices as a production MAX6495 part model. The technical description here follows the manufacturer's MAX6495–MAX6499 Rev. 18 datasheet; use the current manufacturer documentation and change notices for final design and purchasing decisions.
Applications
Industrial supplies
Input protection where a high-voltage transient must be isolated or limited.
Telecom and networking
Power-path control ahead of sensitive downstream rails.
Server equipment
Threshold-programmed overvoltage response around an external MOSFET.
Automotive design exploration
Evaluate the appropriate /V-qualified variant when an automotive qualification is required.
Quality & Authenticity
Verify the full orderable suffix, top marking, package dimensions, date code and traceability records against the current manufacturer's documentation. The package picture on this page is pending; a missing image is not evidence of the delivered component's package. Do not infer automotive qualification from a related /V part number.
FAQ
Does MAX6495ATT+ contain the pass MOSFET?
No. It drives an external n-channel MOSFET selected for the application.
How is the overvoltage threshold set?
An external resistor divider feeds OVSET; its connection point differs between switch and limiter configurations.
Is this exact suffix automotive qualified?
Do not assume so. The manufacturer's datasheet identifies an automotive-qualified /V variant; confirm the exact ordering code and required qualification.
Can the family variants replace it directly?
Not without a full electrical, pinout, package and fault-response review.
Engineering Notice
Validate the complete protection circuit against the latest manufacturer datasheet, especially the MOSFET safe operating area, heat sinking in limiter mode, output-capacitor discharge energy, and transient waveform. The catalog's WDFN wording should be checked against the manufacturer TDFN outline. The production package image is currently unavailable and must be repaired before publication.
MAX6495ATT+ Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Overvoltage Protection Controller
- Applications:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN (3x3)
- Grade:
- Automotive
- Qualification:
- -
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