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Analog Devices Inc./Maxim Integrated MAX6795TPWD2+
- Part No.:
- MAX6795TPWD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6795TPWD2+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,549
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Product details
Overview
MAX6795TPWD2+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail detection) for automotive systems. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and supports fixed (5V/3.3V/2.5V/1.8V) or adjustable (1.8V–11V) output voltage. It is used in engine control units (ECUs) and body control modules requiring robust brownout and watchdog protection.
For engineers reviewing the MAX6795TPWD2+ datasheet, MAX6795TPWD2+ pinout, MAX6795TPWD2+ application, or MAX6795TPWD2+ equivalent, key selection criteria include its AEC-Q100-qualified 20-pin TQFN package, 280ms fixed watchdog timeout, D2-coded 12.5ms reset timeout, and dual enable/hold logic for ignition-controlled self-holding operation.
Technical Context
The MAX6795TPWD2+ implements a single high-side linear regulator with internal pFET gate drive (GATEP pin) for reverse-battery protection. Its supervisory block integrates a precision 1.231V PFI comparator, open-drain or push-pull RESET output with fixed 12.5ms timeout (D2), and a non-windowed watchdog timer with fixed 280ms timeout (CSWT = OUT).
It uses dual logic inputs-ENABLE (active-high) and HOLD (active-low)-to support automotive ignition sequencing: enabling the regulator via ENABLE and latching it ON via HOLD low, independent of subsequent ENABLE state. Thermal shutdown triggers at +165°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Output Current | 300mA continuous - sufficient to power microcontrollers, CAN transceivers, and sensor interfaces in ECUs. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive automotive modules. |
| Reset Timeout | 12.5ms (D2 code) - ensures reliable µP reset assertion duration after power recovery. |
| Watchdog Timeout | 280ms (fixed, CSWT = OUT) - provides fail-safe monitoring of host MCU firmware execution. |
| Dropout Voltage | 420mV typ @ 100mA - maintains regulation during cold-crank (6V battery) with minimal headroom loss. |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments. |
Pinout & Package
MAX6795TPWD2+ is housed in a thermally enhanced 20-pin TQFN package (5mm × 5mm, exposed pad), rated for 2.7W power dissipation and AEC-Q100 qualification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output - delivers up to 300mA; requires ≥10µF ceramic capacitor to GND for stability. |
| 3 | SET | Feedback input - connect to GND for preset voltage (5V/3.3V/2.5V/1.8V); use resistive divider for adjustable 1.8V–11V output. |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI < 1.231V; used for early battery-low warning or graceful shutdown. |
| 5 | CSWT | Watchdog timeout adjust - tied to OUT (pin 1,2) to select fixed 280ms timeout (D2 coding confirmed). |
| 6 | CSRT | Reset timeout adjust - tied to OUT (pin 1,2) to select fixed 12.5ms timeout (D2 coding confirmed). |
| 7 | GND | Power and signal ground - connects to exposed pad (EP) for thermal and electrical integrity. |
| 8 | RESET | Active-low reset output - open-drain or push-pull; asserts when OUT drops below threshold or watchdog expires. |
| 11 | WDI | Watchdog input - requires edge transition every ≤280ms; failure triggers RESET for 12.5ms. |
| 12 | HOLD | Active-low hold input - forces regulator ON even if ENABLE goes low; essential for ignition-latched operation. |
| 16 | PFI | Power-fail comparator input - set threshold via resistor divider; 35µs response to detect battery sag. |
| 17,18 | IN | Main input - accepts 5V–72V; bypass with 1µF capacitor to GND near pins. |
| 19 | GATEP | pFET gate driver - drives external high-side p-channel MOSFET for reverse-battery protection (no diode drop). |
| 20 | ENABLE | Active-high enable - internal 0.5µA pulldown; driven by ignition switch or system controller. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules. |
| Integrated reverse-battery protection | GATEP pin drives external pFET - eliminates series diode, reducing voltage drop and heat. |
| Self-holding circuit support | HOLD + ENABLE logic allows ignition-triggered latching without external components or microcontroller intervention. |
| AEC-Q100 qualified | Qualified per Grade 0 (-40°C to +125°C) - suitable for engine compartment and transmission control applications. |
| Thermal & overcurrent protection | +165°C shutdown with 20°C hysteresis and short-circuit current limiting (480mA typ) ensure fault resilience. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensors in gasoline/diesel ECU under wide battery voltage (6V–16V) and load-dump (up to 72V) conditions. IC Role / Device Role / Timing Role: Primary 5V/3.3V power source with integrated RESET and watchdog supervision for deterministic boot and runtime fault recovery. Use Value: 68μA IQ extends battery life during key-off; 72V input tolerance avoids external TVS; HOLD/ENABLE latching replaces discrete latch circuitry. | Use Scenario: Supplies power to door module MCU, LIN transceivers, and window motor drivers in ambient temperature up to +105°C. IC Role / Device Role / Timing Role: Single-point regulated supply with PFI-based low-battery warning and programmable reset timing for safe shutdown. Use Value: Adjustable output supports diverse sub-system voltages; 12.5ms D2 reset timeout matches common MCU reset requirements; PFO provides 35µs-fast battery sag detection. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Transmission Control Unit (TCU) |
Use Scenario: Powers image signal processor (ISP), serializer, and power management IC in rear-view camera module mounted near exhaust. IC Role / Device Role / Timing Role: High-reliability 3.3V regulator with watchdog supervision to prevent ISP lockup during vibration-induced MCU glitches. Use Value: 280ms fixed watchdog timeout aligns with ISP firmware watchdog window; thermal shutdown prevents damage at +125°C junction temp. | Use Scenario: Supplies 5V to solenoid drivers and 3.3V to transmission MCU in high-vibration, high-temperature transmission housing. IC Role / Device Role / Timing Role: Dual-rail capable (via adjustable SET) regulator with reverse-battery protection via GATEP-driven pFET. Use Value: Eliminates need for external reverse-polarity diode; 300mA output sustains peak solenoid activation; AEC-Q100 Grade 0 ensures lifetime reliability. |
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 |
|---|---|---|---|
| MAX6795TPLD2/V+ | AEC-Q100 qualified (Grade 0), same pinout and electrical specs; /V+ suffix denotes automotive qualification. | Required for production automotive programs needing full AEC-Q100 documentation and traceability. | Select MAX6795TPLD2/V+ for Tier-1 automotive production; MAX6795TPWD2+ is industrial-grade with identical functionality but no formal AEC-Q100 certification. |
| TLV70733PDQNR | Lower input range (2.5V–6.0V), no watchdog/RESET/PFI, 200mA output, SOT-23-5 package. | Suitable only for post-regulated 3.3V domains - cannot replace MAX6795TPWD2+ in direct battery-fed applications. | Use TLV70733PDQNR only in secondary 3.3V rails where supervision and high-voltage tolerance are unnecessary. |
Compared with MAX6795TPLD2/V+, the MAX6795TPWD2+ offers identical performance and pinout but lacks formal AEC-Q100 documentation; compared with TLV70733PDQNR, it provides full battery-direct operation, supervision, and 50% higher output current - making it irreplaceable in primary automotive power domains.
Availability
MAX6795TPWD2+ is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera ECUs requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX6795TPWD2+ 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 demanding industrial, automotive, and communications applications.
The MAX6795TPWD2+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators, engineered specifically for automotive subsystems requiring ultra-low IQ, wide input range, and integrated functional safety supervision.
FAQ
What output voltage options does the MAX6795TPWD2+ support?
The MAX6795TPWD2+ supports fixed output voltages of 5.0V, 3.3V, 2.5V, or 1.8V (selected by factory configuration), or an adjustable output from 1.8V to 11V using an external resistive divider on the SET pin. The D2 suffix confirms a 12.5ms reset timeout, not output voltage - output voltage is determined by the third character in the part number (e.g., 'P' = 5.0V, 'T' = 3.3V). MAX6795TPWD2+ is a 5.0V fixed-output variant.
Does the MAX6795TPWD2+ include reverse-battery protection?
Yes, the MAX6795TPWD2+ integrates reverse-battery protection via its GATEP pin, which drives the gate of an external high-side p-channel MOSFET. This eliminates the need for a series Schottky diode, reducing voltage drop and power loss. The internal circuitry ensures the pFET remains off during reverse polarity, protecting downstream circuitry without external components beyond the MOSFET itself.
How does the HOLD function work in the MAX6795TPWD2+?
The HOLD input in the MAX6795TPWD2+ is an active-low signal that enables self-holding behavior: once ENABLE turns the regulator ON, asserting HOLD low locks the output ON permanently-even if ENABLE later goes low. Releasing HOLD (pulling it high or leaving it floating) shuts down the regulator. This allows ignition-switch-triggered latching without external logic, simplifying ECU power architecture and reducing BOM count.
What is the watchdog timeout period for the MAX6795TPWD2+?
MAX6795TPWD2+ uses a fixed watchdog timeout period of 280ms (minimum), configured by connecting the CSWT pin to the OUT pin (as indicated by the D2 suffix in the ordering code). This timeout is non-windowed and resets on each valid WDI edge. If no edge occurs within 280ms, the device asserts RESET for the fixed 12.5ms timeout period (CSRT = OUT, D2-coded), ensuring deterministic MCU recovery.
Is the MAX6795TPWD2+ qualified for automotive use?
The MAX6795TPWD2+ is not formally AEC-Q100 qualified; it is an industrial-grade variant. For automotive production, Maxim specifies the MAX6795TPLD2/V+ or MAX6795TPSD2/V+ - both carry the /V+ suffix denoting full AEC-Q100 Grade 0 qualification (-40°C to +125°C) and automotive traceability. MAX6795TPWD2+ shares identical electrical specs and pinout but lacks certified test reports required by Tier-1 suppliers.
MAX6795TPWD2+ 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:
- 1.665V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6795TPWD2+ FAQ
1.How can I place an order for MAX6795TPWD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6795TPWD2+ 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 MAX6795TPWD2+ reliable?
The price and inventory of MAX6795TPWD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6795TPWD2+ is usually 5 days.
3.What payment methods are accepted for MAX6795TPWD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6795TPWD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6795TPWD2+?
MAX6795TPWD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6795TPWD2+ 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 MAX6795TPWD2+?
For technical support, including MAX6795TPWD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6795TPWD2+ requirements.
6.How does Aetrix verify that MAX6795TPWD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6795TPWD2+ 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 MAX6795TPWD2+ meets industry standards.
7.What is the process for return or replacement of MAX6795TPWD2+?
All MAX6795TPWD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6795TPWD2+, 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 MAX6795TPWD2+ part is unused and in its original packaging.
Return procedure for MAX6795TPWD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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