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Analog Devices Inc./Maxim Integrated MAX6793TPVD2+
- Part No.:
- MAX6793TPVD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPVD2+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,238
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Product details
Overview
MAX6793TPVD2+ from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions for automotive systems. It delivers up to 150mA per output (OUT1 and fixed 5V OUT2), operates from 5V to 72V input, consumes only 68μA quiescent current, and features active-low open-drain RESET with 12.5ms fixed timeout (D2). It is used in engine control units (ECUs) and body control modules requiring robust brownout protection and watchdog supervision.
For engineers reviewing the MAX6793TPVD2+ datasheet, MAX6793TPVD2+ pinout, MAX6793TPVD2+ application, or MAX6793TPVD2+ equivalent, key selection criteria include its dual 150mA outputs, 5V/3.3V preset options (V = 3.3V per ordering code), AEC-Q100-qualified TQFN-20 package, -40°C to +125°C operation, and integrated HOLD/WDI/PFI functions enabling self-holding and power-fail detection without external components.
Technical Context
The MAX6793TPVD2+ implements two independent LDO regulators: OUT1 is adjustable (1.8V–11V) or preset (3.3V per "V" suffix), while OUT2 is fixed at 5V. Its reset circuit monitors OUT1 voltage with 87.5% threshold (S option) and asserts open-drain RESET low for 12.5ms after recovery. The watchdog timer uses WDI input with fixed 280ms timeout (CSWT tied to OUT1) and supports disable via WD-DIS pin.
It integrates reverse-battery protection via GATEP-driven pFET, thermal shutdown at +165°C with 20°C hysteresis, short-circuit current limiting (~240mA), and output overvoltage protection at 105–110% of VOUT. ENABLE2 controls OUT2 independently; ENABLE1 and HOLD jointly manage OUT1 startup and latching behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-powered ECU sleep modes. |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient for MCU core + peripheral rail in compact ECUs. |
| Dropout Voltage | 840mV typ at 100mA (dual) - maintains regulation down to VIN = 6.3V when VOUT1 = 5.5V. |
| Reset Threshold | 2.805V to 2.970V (87.5% of 3.3V) - ensures reliable reset assertion during 3.3V rail brownout. |
| Reset Timeout | 12.5ms (D2 option) - meets automotive microcontroller minimum reset pulse width requirements. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive environments per AEC-Q100. |
Pinout & Package
MAX6793TPVD2+ is housed in a thermally enhanced 5mm × 5mm, 20-pin TQFN-EP package 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 | OUT1 | Dual-regulator main output: preset 3.3V (per "V" in part number); requires ≥10μF ceramic capacitor to GND. |
| 3 | SET1 | Feedback node for OUT1; grounded for 3.3V preset; connects to resistive divider for adjustable output. |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early battery-low warning. |
| 5 | CSWT | Watchdog timeout adjust; tied to OUT1 for fixed 280ms timeout (as in MAX6793TPVD2+). |
| 6 | CSRT | Reset timeout adjust; tied to OUT1 for fixed 12.5ms timeout (D2 option). |
| 7 | GND | Analog/digital ground reference; EP must be soldered to PCB ground plane for thermal performance. |
| 8 | RESET | Active-low open-drain reset output; asserts during OUT1 brownout or watchdog fault. |
| 9,10 | WDS1, WDS0 | Windowed watchdog select inputs - unused in MAX6793 (not MAX6791/MAX6792); NC on this variant. |
| 11 | WDI | Watchdog input; rising/falling edge must occur within 280ms to prevent RESET assertion. |
| 12 | HOLD | Active-low latch enable; holds OUT1 ON even after ENABLE1 goes low - enables self-holding circuits. |
| 13,14 | OUT2 | Fixed 5V output; supplies secondary MCU peripherals or sensors; requires ≥10μF capacitor. |
| 15 | ENABLE2 | Active-high enable for OUT2; internal 0.5μA pulldown allows direct microcontroller GPIO control. |
| 16 | PFI | Power-fail comparator input; set via resistor divider to trigger PFO at custom battery threshold. |
| 17,18 | IN | Main input supply (5V–72V); bypassed with 1μF ceramic capacitor to GND near pins. |
| 19 | GATEP | pFET gate driver; drives external PMOS for reverse-battery protection - eliminates series diode loss. |
| 20 | ENABLE1 | Active-high enable for OUT1; internal 0.5μA pulldown enables ignition-switched startup control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | OUT1 (3.3V preset) + OUT2 (fixed 5V) - powers mixed-voltage subsystems from single high-voltage rail. |
| Integrated HOLD function | Enables self-holding circuit without external latch IC or MOSFET - reduces BOM count and board space. |
| Reverse-battery protection | GATEP drives external pFET to block negative input - eliminates 0.3–0.7V diode drop and heat generation. |
| Adjustable power-fail detection | PFI input with 1.231V precision reference - sets custom battery undervoltage warning threshold via resistor divider. |
| AEC-Q100 qualified | Qualified to Grade 0 (-40°C to +125°C) - validated for critical automotive applications including powertrain. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powers 3.3V MCU core and 5V CAN transceiver in gasoline/diesel engine management system. IC Role / Device Role: Dual-output LDO with integrated reset, watchdog, and reverse-battery protection. Use Value: Eliminates need for discrete reset IC, watchdog timer, and reverse-protection diode - simplifies design and improves reliability under load-dump conditions. |
Use Scenario: Supplies 3.3V infotainment microcontroller and 5V door-lock actuator driver in vehicle body electronics. IC Role / Device Role: High-input-voltage regulator with HOLD latching and PFI-based battery monitoring. Use Value: Enables ignition-controlled startup with self-hold during key-off memory mode, plus early battery-low alert before system shutdown. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Control Unit |
|
Use Scenario: Powers image sensor (3.3V) and SerDes interface (5V) in rear-view camera module exposed to under-hood temps. IC Role / Device Role: Automotive-grade dual LDO with thermal shutdown, wide VIN range, and 125°C operation. Use Value: Maintains stable output across -40°C cold crank to +125°C under-hood ambient - avoids sensor reset or data corruption. |
Use Scenario: Supplies torque-control MCU (3.3V) and motor gate driver bias (5V) in EPS system with high vibration and EMI. IC Role / Device Role: Low-noise, high-PSRR (69dB @100Hz) regulator with integrated watchdog supervision. Use Value: Prevents runaway motor operation by asserting RESET if MCU firmware hangs - meets ASIL-B functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPVD2+ | Same pinout, same 3.3V/5V outputs, but includes windowed watchdog (WDS0/WDS1) - not present in MAX6793. | Required where asymmetric watchdog timing (min/max window) is needed for safety-critical firmware validation. | Select MAX6794TPVD2+ only if windowed watchdog logic is required; otherwise MAX6793TPVD2+ offers identical regulation and simpler control. |
| TLV70733PDQNR | Single 3.3V output, 200mA, 2.5V–5.5V input only - no 72V capability, no watchdog, no HOLD, no PFI. | Suitable only for low-voltage post-regulation (e.g., 5V → 3.3V) in non-automotive or non-safety-critical systems. | Not a functional substitute: lacks high-VIN, dual output, supervisory features, and AEC-Q100 qualification required for MAX6793TPVD2+ use cases. |
Compared with MAX6794TPVD2+, the MAX6793TPVD2+ omits windowed watchdog inputs but retains identical dual-output regulation, RESET, HOLD, and PFI functionality - making it optimal for cost-sensitive automotive applications where basic watchdog timeout suffices.
Availability
MAX6793TPVD2+ 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 MAX6793TPVD2+ 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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets.
The MAX6791–MAX6796 family was engineered specifically for automotive power management - delivering ultra-low quiescent current, 72V tolerance, integrated supervision, and AEC-Q100 qualification in compact TQFN packages.
FAQ
What output voltage does MAX6793TPVD2+ deliver on OUT1 and OUT2?
MAX6793TPVD2+ delivers a preset 3.3V on OUT1 (indicated by "V" in the part number) and a fixed 5V on OUT2. The "D2" suffix specifies a 12.5ms reset timeout period. OUT1 can be reconfigured to other voltages (1.8V, 2.5V, 5V) or adjusted from 1.8V to 11V using an external resistor divider on SET1, but the factory configuration is 3.3V.
Does MAX6793TPVD2+ support reverse-battery protection?
Yes, MAX6793TPVD2+ supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When reverse polarity is applied, the IC disables the pFET to block current flow - eliminating the power loss and heat associated with series Schottky diodes. No external protection diode is required.
How is the watchdog timer configured on MAX6793TPVD2+?
MAX6793TPVD2+ uses a fixed 280ms watchdog timeout period (tWD2), enabled by connecting CSWT to OUT1 (as specified in the D2 variant). The watchdog is disabled by driving WD-DIS low. Unlike MAX6791/MAX6792, MAX6793TPVD2+ does not implement windowed watchdog logic - WDS0 and WDS1 pins are not connected internally.
What is the function of the HOLD pin on MAX6793TPVD2+?
The HOLD pin on MAX6793TPVD2+ provides self-holding functionality: when pulled low after initial enable, it keeps OUT1 active even if ENABLE1 returns low - enabling ignition-key-controlled startup with memory retention. HOLD is internally pulled up to OUT1 with 2μA current, so leaving it unconnected makes ENABLE1 behave as a standard ON/OFF switch.
Is MAX6793TPVD2+ qualified for automotive applications?
Yes, MAX6793TPVD2+ is AEC-Q100 qualified (Grade 0) and specified for -40°C to +125°C operation. It includes automotive-specific protections: thermal shutdown with hysteresis, short-circuit current limiting, output overvoltage protection, and robust ESD tolerance - making it suitable for engine control, body electronics, and ADAS systems.
MAX6793TPVD2+ 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:
- 2
- 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)
MAX6793TPVD2+ FAQ
1.How can I place an order for MAX6793TPVD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPVD2+ 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 MAX6793TPVD2+ reliable?
The price and inventory of MAX6793TPVD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPVD2+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPVD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPVD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPVD2+?
MAX6793TPVD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPVD2+ 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 MAX6793TPVD2+?
For technical support, including MAX6793TPVD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPVD2+ requirements.
6.How does Aetrix verify that MAX6793TPVD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPVD2+ 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 MAX6793TPVD2+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPVD2+?
All MAX6793TPVD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPVD2+, 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 MAX6793TPVD2+ part is unused and in its original packaging.
Return procedure for MAX6793TPVD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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