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Analog Devices Inc./Maxim Integrated MAX6795TPVD3+T
- Part No.:
- MAX6795TPVD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPVD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,726
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Product details
Overview
MAX6795TPVD3+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail comparator, and hold control), designed for automotive systems. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a preset 3.3V output with 87.5% reset threshold and 50ms reset timeout - ideal for engine control units under load-dump conditions.
For engineers reviewing the MAX6795TPVD3+T datasheet, MAX6795TPVD3+T pinout, MAX6795TPVD3+T application, or MAX6795TPVD3+T equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, -40°C to +125°C operation, adjustable watchdog timeout, thermal/short-circuit protection, and dual enable-hold logic for ignition-controlled self-holding circuits.
Technical Context
The MAX6795TPVD3+T implements a single high-side pFET-based LDO regulator with internal feedback reference and dropout compensation. Its RESET output is push-pull active-low, triggered when OUT drops below 87.5% of nominal (2.888V at 3.3V output) and held for 50ms after recovery. The watchdog monitors WDI transitions using an internally fixed 280ms timeout (min), configurable via CSWT capacitor or disabled via WD-DIS.
It integrates a precision 1.231V PFI comparator for battery voltage monitoring, a HOLD input with 2µA internal pullup to OUT, and GATEP drive for external reverse-battery pFET protection. All supervisory timing (reset, watchdog) is temperature-stable across -40°C to +125°C, with guaranteed performance at extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Output Voltage | Fixed 3.3V ±3.3% (at 1mA, -40°C to +125°C) - matches common MCU I/O rail requirements. |
| Max Output Current | 300mA continuous - supports microcontroller, CAN transceiver, and sensor biasing in compact ECUs. |
| Quiescent Current | 68μA typical (VIN = 8V) - enables always-on functionality in low-power vehicle modules. |
| Reset Threshold | 87.5% of VOUT (2.888V at 3.3V) - ensures reliable µP reset before brownout-induced corruption. |
| Reset Timeout | 50ms (D3 option) - meets ISO 16750-2 cold-cranking recovery timing requirements. |
| Watchdog Timeout | 280ms minimum (fixed) - provides robust fault detection for safety-critical firmware execution. |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive placement per AEC-Q100 Grade 0. |
Pinout & Package
MAX6795TPVD3+T is housed in a thermally enhanced 20-pin TQFN-EP (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND. The package dissipates up to 2.7W and supports continuous operation at high ambient temperatures and load currents.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT | Regulator output (3.3V fixed); requires ≥10μF ceramic capacitor to GND for stability. |
| 3 | SET | Feedback input; tied to GND for preset 3.3V operation - no external resistor needed. |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early battery warning. |
| 5 | CSWT | Watchdog timeout adjust; connected to OUT for fixed 280ms timeout (as configured in MAX6795TPVD3+T). |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 50ms timeout (D3 option per ordering code). |
| 7 | GND | Power and signal ground; EP must be soldered to PCB ground plane for thermal management. |
| 8 | RESET | Push-pull active-low reset output; drives µP reset pin directly without pullup resistor. |
| 11 | WDI | Watchdog input; requires periodic edge transition within 280ms to prevent reset assertion. |
| 12 | HOLD | Active-low hold control; forces regulator ON even after ENABLE goes low - enables self-holding ignition circuits. |
| 16 | PFI | Power-fail comparator input; use resistive divider to monitor battery or pre-regulated supply voltage. |
| 17, 18 | IN | Main input (5–72V); bypass with 1μF ceramic capacitor to GND near pins for transient immunity. |
| 19 | GATEP | pFET gate driver; connects to source of external p-channel MOSFET for reverse-battery protection. |
| 20 | ENABLE | Active-high enable; pulled down internally (0.5μA sink) - driven by ignition switch or system controller. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 0 (-40°C to +125°C) qualification confirmed for MAX6795TPVD3+T - suitable for engine compartment deployment. |
| Reverse-Battery Protection Support | GATEP output drives external pFET - eliminates series diode drop, enabling >95% efficiency at 300mA. |
| Self-Holding Circuit Enable | HOLD input with 2µA internal pullup to OUT - allows ignition-switch-triggered latching without external components. |
| Integrated Power-Fail Detection | PFI/PFO with 1.231V ±2.6% reference - enables precise battery voltage monitoring with <35µs response. |
| Thermal & Short-Circuit Protection | 165°C shutdown with 20°C hysteresis and 480mA short-circuit limit - prevents damage during fault conditions. |
| Low-Dropout Operation | 420mV typical dropout at 100mA (3.3V output) - sustains regulation down to VIN = 3.72V during cranking. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powers 32-bit MCU, CAN transceiver, and analog sensors in gasoline/diesel engine bay under wide temperature and load-dump stress. IC Role / Device Role / Timing Role: Primary 3.3V power rail regulator with integrated reset supervision and watchdog for firmware integrity. Use Value: 72V input tolerance and 68μA quiescent current ensure reliable startup and low-battery sleep mode compliance. |
Use Scenario: Supplies infotainment interface, door lock actuators, and lighting drivers in passenger compartment with ignition-controlled sequencing. IC Role / Device Role / Timing Role: System supervisor and power manager coordinating power-up/down sequencing via ENABLE/HOLD logic. Use Value: Self-holding circuit eliminates need for external latch IC, reducing BOM count and board space. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
|
Use Scenario: Powers image signal processor and SerDes link in rear-view camera module mounted near exhaust or bumper. IC Role / Device Role / Timing Role: High-reliability 3.3V regulator with watchdog-enforced firmware health check and thermal shutdown. Use Value: 125°C operation and 2.7W thermal dissipation support sustained imaging under hood heat soak. |
Use Scenario: Supplies motor control MCU and gate drivers in EPS column-mounted controller subject to vibration and thermal cycling. IC Role / Device Role / Timing Role: Safety-critical power supervisor providing fail-safe reset and power-fail warning via PFO. Use Value: PFI comparator with 1.231V reference enables accurate battery voltage margining for torque assist cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage automotive regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPSD2/V+ | Same 3.3V output but 12.5ms reset timeout (D2) vs. 50ms (D3); AEC-Q100 qualified (/V+ suffix). | Shorter reset pulse insufficient for cold-cranking recovery in heavy-duty vehicles. | Select MAX6795TPVD3+T when 50ms reset hold time is required for ISO 16750-2 compliance. |
| TLE42754G | 5V fixed output only; 150mA max; no watchdog or HOLD function; 40μA IQ. | Lacks programmable supervision features - requires external reset IC and latch circuitry. | Choose MAX6795TPVD3+T when integrated watchdog, HOLD, and PFI are needed to reduce system complexity. |
Compared with MAX6795TPSD2/V+, MAX6795TPVD3+T provides longer reset assertion for robust cold-cranking recovery; compared with TLE42754G, it delivers double the output current plus full supervisory integration - eliminating four external components in typical ECU designs.
Availability
MAX6795TPVD3+T is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera ECUs, and electric power steering controllers requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6795TPVD3+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for automotive, industrial, and communications markets, with emphasis on high-reliability, low-power, and high-voltage solutions.
The MAX6791–MAX6796 product line was engineered specifically for automotive power management in harsh environments - integrating linear regulation, reset supervision, watchdog monitoring, and reverse-battery protection into a single AEC-Q100-qualified device.
FAQ
What output voltage does the MAX6795TPVD3+T provide?
The MAX6795TPVD3+T provides a fixed 3.3V output with ±3.3% tolerance over -40°C to +125°C. This is confirmed by the "T" prefix in the ordering code (T = 3.3V), and electrical characteristics show VOUT = 3.201V to 3.399V at 300mA and VIN = 6V. The SET pin is internally grounded for preset operation - no external resistors are required.
Does the MAX6795TPVD3+T include watchdog functionality?
Yes, the MAX6795TPVD3+T includes a configurable watchdog timer with a minimum timeout of 280ms. In this variant, CSWT is factory-connected to OUT, enabling the fixed timeout mode. The watchdog monitors WDI transitions and asserts RESET if no valid edge occurs within the timeout window - critical for detecting MCU lockup in safety-critical automotive systems.
What is the purpose of the HOLD pin on the MAX6795TPVD3+T?
The HOLD pin on the MAX6795TPVD3+T enables self-holding circuit behavior: when pulled low after initial power-up, it keeps the regulator enabled even if ENABLE returns low. This allows ignition-switch-triggered latching without external components. HOLD is internally pulled up to OUT with 2µA - connecting it to OUT or leaving it open configures standard enable/disable operation.
Is the MAX6795TPVD3+T qualified for automotive use?
Yes, the MAX6795TPVD3+T is AEC-Q100 qualified (Grade 0) and carries the "/V+" designation in its full qualified part number (MAX6795TPVD3+/V+). It is fully specified from -40°C to +125°C, includes thermal shutdown at 165°C, and meets automotive transient immunity requirements including load-dump survival up to 72V.
How does the MAX6795TPVD3+T handle reverse-battery conditions?
The MAX6795TPVD3+T does not block reverse battery internally but provides GATEP - a dedicated gate driver output that controls an external p-channel MOSFET. When wired correctly, this MOSFET blocks reverse current while adding minimal voltage drop (<50mV at 300mA), replacing lossy series diodes and improving system efficiency in 12V automotive architectures.
MAX6795TPVD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPVD3+T FAQ
1.How can I place an order for MAX6795TPVD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPVD3+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6795TPVD3+T reliable?
The price and inventory of MAX6795TPVD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPVD3+T is usually 5 days.
3.What payment methods are accepted for MAX6795TPVD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPVD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPVD3+T?
MAX6795TPVD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPVD3+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6795TPVD3+T?
For technical support, including MAX6795TPVD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPVD3+T requirements.
6.How does Aetrix verify that MAX6795TPVD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6795TPVD3+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6795TPVD3+T meets industry standards.
7.What is the process for return or replacement of MAX6795TPVD3+T?
All MAX6795TPVD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPVD3+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6795TPVD3+T part is unused and in its original packaging.
Return procedure for MAX6795TPVD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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