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Analog Devices Inc./Maxim Integrated MAX6795TPVD2+
- Part No.:
- MAX6795TPVD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPVD2+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,235
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Product details
Overview
The MAX6795TPVD2+ from Maxim Integrated is an automotive-grade, single-output linear regulator with integrated supervisory functions including reset, watchdog timer, power-fail detection, and hold control. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a preset 5V output with 87.5% reset threshold and 12.5ms fixed reset timeout - ideal for engine control units (ECUs) and body control modules requiring robust cold-crank and load-dump resilience.
For engineers reviewing the MAX6795TPVD2+ datasheet, MAX6795TPVD2+ pinout, MAX6795TPVD2+ application, or MAX6795TPVD2+ equivalent, key selection considerations include its AEC-Q100 qualification, TQFN-20 package thermal performance (2.7W dissipation), dual-mode watchdog disable capability, and compatibility with reverse-battery protection via external pFET driven by GATEP.
Technical Context
The MAX6795TPVD2+ implements a high-voltage linear regulation architecture with internal p-channel pass transistor, supporting operation across the full automotive battery range including 80V transient tolerance. Its supervisory block integrates a precision 1.231V reference for PFI comparison, a dual-threshold (92.5%/87.5%) reset monitor tied to OUT, and a configurable watchdog with fixed 280ms timeout or capacitor-adjustable mode - all specified over −40°C to +125°C.
It uses a dedicated HOLD input with internal 2µA pull-up to OUT to enable self-holding behavior without external latching circuitry, and includes GATEP output capable of driving a p-channel MOSFET gate for reverse-polarity protection - eliminating series diode losses while maintaining low dropout (1200mV typ at 300mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients up to 80V (absolute max) without damage or shutdown. |
| Output Current | 300mA continuous - supports microcontroller, CAN transceiver, and sensor rail in compact ECU designs. |
| Quiescent Current | 68μA typical - enables always-on functionality in vehicle security and telematics systems with minimal battery drain. |
| Reset Threshold | 87.5% of nominal output - for 5V output, asserts RESET below 4.375V, ensuring reliable brownout detection during cranking. |
| Reset Timeout | 12.5ms (D2 option) - fixed duration ensures µP reset pulse meets minimum assertion time requirements per ISO 16750. |
| Watchdog Timeout | 280ms min (fixed) - provides sufficient margin for firmware execution cycles in safety-critical automotive software. |
| Thermal Shutdown | +165°C with 20°C hysteresis - protects against sustained overload or ambient overheating in under-hood environments. |
Pinout & Package
MAX6795TPVD2+ is housed in a thermally enhanced 5mm × 5mm, 20-pin TQFN-EP package (exposed pad connected to GND), rated for 2.7W continuous power dissipation at +70°C ambient and supporting operation up to +125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output - delivers preset 5V (87.5% reset threshold); requires ≥10µF ceramic output capacitor to GND for stability. |
| 3 | SET | Feedback input - tied to GND for 5V preset mode; connects to resistive divider for adjustable outputs (1.8V–11V). |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI < 1.231V; used for early warning of battery sag or supply collapse. |
| 5 | CSWT | Watchdog timeout adjust - connect to OUT for fixed 280ms timeout; capacitor-to-GND enables user-defined period. |
| 6 | CSRT | Reset timeout adjust - connect to OUT for fixed 12.5ms (D2); capacitor-to-GND allows 35μs–260ms range. |
| 7 | GND | Ground reference - connects to PCB ground plane; exposed pad (EP) must be soldered to thermal pad for heat dissipation. |
| 8 | RESET | Active-low reset output - push-pull type; drives µP reset pin directly; asserts low on undervoltage or watchdog fault. |
| 11 | WDI | Watchdog input - requires edge transition within timeout window; resets watchdog counter on valid rising/falling edge. |
| 12 | HOLD | Active-low hold control - forces regulator ON even after ENABLE goes low; releases ON state when pulled high. |
| 16 | PFI | Power-fail comparator input - accepts resistive divider from battery or pre-regulated rail to set custom fail threshold. |
| 17,18 | IN | Main regulator input - bypass with 1µF ceramic capacitor to GND; handles 5V–72V DC with 80V transient rating. |
| 19 | GATEP | pFET gate driver - sources current to drive external p-channel MOSFET for reverse-battery protection (no diode loss). |
| 20 | ENABLE | Active-high enable - internal 0.5µA pulldown; logic-high (>1.4V) required to activate regulator; compatible with 3.3V/5V MCU GPIO. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Rated for automotive Grade 0 (−40°C to +125°C) with full qualification testing - suitable for powertrain and chassis applications. |
| Reverse-Battery Protection Support | GATEP output drives external pFET to block reverse current - eliminates ~0.4V diode drop and associated heat in battery-connected rails. |
| Self-Holding Circuit Enable | HOLD input with internal 2µA pull-up to OUT allows ignition-switched startup and latch-free hold behavior - reduces BOM count vs discrete latching solutions. |
| Dual-Mode Watchdog Disable | WD-DIS pin or WDS0/WDS1 logic enables full watchdog disable - critical for debug modes or deterministic boot sequences where watchdog interference must be eliminated. |
| Integrated Power-Fail Detection | PFI/PFO comparator with 1.231V reference and 35μs response - enables predictive shutdown before system crash in low-battery conditions. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensors in under-hood environment subject to load-dump (±100V) and cold-crank (3.5V). IC Role / Device Role / Timing Role: Primary 5V system rail regulator with integrated reset supervision and watchdog monitoring of MCU firmware execution. Use Value: 72V input range and 68μA IQ ensure uninterrupted operation during cranking; 12.5ms reset timeout guarantees reliable µP initialization per ISO 26262 ASIL-B timing constraints. |
Use Scenario: Supplies door module MCU, LIN transceiver, and LED drivers in cabin environment with variable battery voltage and EMI exposure. IC Role / Device Role / Timing Role: Single-point power management IC providing regulated 5V, power-fail warning, and supervised reset for safe state entry. Use Value: PFI comparator triggers orderly shutdown before battery drops below 9V; HOLD function enables wake-on-LIN without external latching circuitry. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance System (ADAS) Camera ECU |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in always-on telematics gateway with strict quiescent current budget. IC Role / Device Role / Timing Role: Low-IQ supervisor-regulator delivering 5V with watchdog-enforced firmware health check and reset recovery. Use Value: 68μA IQ extends parked vehicle battery life beyond 6 months; WD-DIS pin allows disabling watchdog during OTA update verification phase. |
Use Scenario: Supplies image signal processor (ISP), MIPI camera interface, and flash memory in front-facing ADAS camera exposed to wide thermal cycling. IC Role / Device Role / Timing Role: High-reliability 5V regulator with thermal shutdown, overvoltage protection, and precise reset threshold for fail-safe boot. Use Value: +165°C thermal shutdown with 20°C hysteresis prevents latch-up in sealed housing; 5V output tolerance ±2.5% ensures ISP core voltage compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage supervisory regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPSD2/V+ | Same package and pinout; preset 3.3V output (vs. 5V), 87.5% reset threshold, same D2 (12.5ms) reset timeout. | Used where 3.3V logic rail is primary target (e.g., low-power MCU domains), not 5V peripherals. | Select when system requires 3.3V instead of 5V - identical supervision features and thermal performance. |
| TLV70733PDQNR | Lower voltage range (2.5V–6.5V), no watchdog/reset supervision, 200mA output, SOT-23-5 package. | Limited to post-regulated 3.3V rails; lacks automotive transients support, reset, or watchdog - only basic LDO function. | Not a functional replacement; consider only for non-automotive, low-voltage, non-supervised applications where size and cost outweigh supervision needs. |
Compared with MAX6795TPVD2+, the MAX6795TPSD2/V+ offers identical supervision, thermal, and packaging specs but targets 3.3V systems, while TLV70733PDQNR lacks high-voltage capability, reset, watchdog, and automotive qualification - making it unsuitable for direct substitution in automotive primary rail applications.
Availability
MAX6795TPVD2+ is available at Aetrix Electronics and suitable for engine control units, body control modules, and telematics gateways requiring stable component supply under AEC-Q100-compliant automotive production programs.
Supply support for MAX6795TPVD2+ 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, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX6795TPVD2+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators engineered specifically for automotive power-supply supervision - integrating reset, watchdog, power-fail, and hold functions into a single AEC-Q100-qualified device.
FAQ
What is the output voltage and reset threshold configuration of the MAX6795TPVD2+?
The MAX6795TPVD2+ is factory-configured with a fixed 5V output voltage and an 87.5% reset threshold, meaning RESET asserts when OUT falls below 4.375V. Its D2 suffix denotes a fixed 12.5ms reset timeout period. This configuration is verified in the device's ordering guide and electrical characteristics table under "Reset Threshold (Preset Output Voltage)" for 'V' option.
Does the MAX6795TPVD2+ support reverse-battery protection, and how is it implemented?
Yes, the MAX6795TPVD2+ supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET to block reverse current flow. When reverse polarity is applied, GATEP remains low, keeping the pFET off. This eliminates the voltage drop and power loss of a series diode, preserving efficiency - confirmed in the Functional Diagram (page 14) and Reverse-Battery Protection section of the datasheet.
Can the watchdog timer in the MAX6795TPVD2+ be disabled, and if so, how?
Yes, the watchdog timer in the MAX6795TPVD2+ can be disabled using the WD-DIS pin: driving WD-DIS low disables the watchdog function entirely. Alternatively, tying WDS0 high and WDS1 low achieves the same result. Both methods are documented in the Watchdog Timer section and Pin Description table, and disable behavior is guaranteed across the full −40°C to +125°C operating range.
What is the thermal performance of the MAX6795TPVD2+ in its TQFN package?
The MAX6795TPVD2+ in its 5mm × 5mm TQFN-EP package dissipates up to 2.7W continuously at +70°C ambient, with a thermal derating factor of 33.3mW/°C above that temperature. Its junction-to-board thermal resistance (θJB) is optimized via the exposed pad, enabling reliable operation at +125°C junction temperature - validated in Absolute Maximum Ratings and Thermal Characteristics sections.
Is the MAX6795TPVD2+ pin-compatible with other devices in the MAX6791–MAX6796 family?
Yes, all MAX6791–MAX6796 devices share identical 20-pin TQFN-EP pinouts and footprint, including MAX6795TPVD2+. This allows design reuse across variants (e.g., dual-output MAX6793, 3.3V MAX6795TPSD2/V+) without PCB changes - confirmed in the Pin Configuration diagrams (pages 10–11) and Ordering Information table showing uniform "20 TQFN-EP*" packaging.
MAX6795TPVD2+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tube
- 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:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPVD2+ FAQ
1.How can I place an order for MAX6795TPVD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPVD2+ 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 MAX6795TPVD2+ reliable?
The price and inventory of MAX6795TPVD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPVD2+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPVD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPVD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPVD2+?
MAX6795TPVD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPVD2+ 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 MAX6795TPVD2+?
For technical support, including MAX6795TPVD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPVD2+ requirements.
6.How does Aetrix verify that MAX6795TPVD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPVD2+ 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 MAX6795TPVD2+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPVD2+?
All MAX6795TPVD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPVD2+, 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 MAX6795TPVD2+ part is unused and in its original packaging.
Return procedure for MAX6795TPVD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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