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Analog Devices Inc./Maxim Integrated MAX6793TPVD2+T
- Part No.:
- MAX6793TPVD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPVD2+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,487
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Product details
Overview
MAX6793TPVD2+T from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive systems. It delivers up to 150mA per output across a 5V–72V input range, features 68μA quiescent current, fixed 5V/3.3V output options (this variant: 3.3V), and a capacitor-adjustable 12.5ms reset timeout. It is used in engine control units (ECUs) where load-dump resilience and microprocessor supervision are critical.
For engineers reviewing the MAX6793TPVD2+T datasheet, MAX6793TPVD2+T pinout, MAX6793TPVD2+T application, or MAX6793TPVD2+T equivalent, key selection criteria include dual 150mA output capability, AEC-Q100-compliant thermal performance (−40°C to +125°C), watchdog disable support via WD-DIS, HOLD self-hold functionality, and 5mm × 5mm TQFN-20EP package with exposed pad for thermal dissipation.
Technical Context
The MAX6793TPVD2+T implements two independent LDO regulators: OUT1 (adjustable or preset 3.3V) and OUT2 (fixed 5V). Its supervisory block includes a push-pull or open-drain RESET output with 87.5% reset threshold (relative to OUT1), internally fixed 12.5ms reset timeout (D2 code), and watchdog timer with WD-DIS disable control - distinct from windowed watchdog variants (MAX6791/MAX6792).
It integrates reverse-battery protection via GATEP-driven pFET, power-fail detection (PFI/PFO) with 1.231V internal reference, and thermal/short-circuit/overvoltage protection. ENABLE1 and ENABLE2 allow independent regulation control, while HOLD enables latch-up behavior without external components.
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 ECU subsystems with minimal battery drain |
| Output Current | 150mA per output (OUT1 & OUT2) - supports dual-rail MCU + peripheral biasing |
| Output Voltage Options | Preset 3.3V (OUT1), fixed 5V (OUT2) - matches common automotive logic and analog supply requirements |
| Reset Timeout Period | 12.5ms (D2 code) - ensures reliable μP initialization after brownout recovery |
| Operating Temperature | −40°C to +125°C - fully specified for under-hood automotive environments |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation at high ambient |
Pinout & Package
MAX6793TPVD2+T uses a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad). The EP pad must be soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT1 | Regulator 1 output | 3.3V fixed output (this variant); requires ≥10μF ceramic capacitor to GND for stability |
| 3 - SET1 | Feedback input | Connected to GND to select preset 3.3V; enables adjustable operation when used with external resistor divider |
| 4 - PFO | Power-fail comparator output | Open-drain active-low signal asserting when PFI falls below 1.231V; used for early battery warning |
| 5 - CSWT | Watchdog timeout adjust | Connected to OUT1 for fixed 280ms timeout; capacitor-to-GND enables adjustment |
| 6 - CSRT | Reset timeout adjust | Connected to OUT1 for fixed 12.5ms timeout (D2); capacitor-to-GND enables user-defined delay |
| 7 - GND | Ground reference | Primary return path; EP pad must be connected to same ground plane |
| 8 - RESET | Supervisory reset output | Push-pull active-low output asserting when OUT1 drops below 87.5% of nominal (2.888V) |
| 11 - WDI | Watchdog input | Edge-sensitive input; reset asserted if no transition occurs within watchdog timeout period |
| 12 - HOLD | Regulator hold control | Active-low; forces OUT1/OUT2 ON even after ENABLE1/ENABLE2 goes low - enables self-holding circuits |
| 13, 14 - OUT2 | Regulator 2 output | Fixed 5V output; independent of OUT1; requires ≥10μF ceramic capacitor to GND |
| 15 - ENABLE2 | Enable for OUT2 | Active-high; internal 0.5μA pulldown allows direct MCU GPIO control without pull-down resistor |
| 16 - PFI | Power-fail comparator input | High-impedance input referenced to 1.231V; used with resistive divider to set custom undervoltage threshold |
| 17, 18 - IN | Main regulator input | Accepts 5V–72V; bypassed with 1μF ceramic capacitor to GND near pins |
| 19 - GATEP | pFET gate driver | Drives external p-channel MOSFET for reverse-battery protection; eliminates series diode loss |
| 20 - ENABLE1 | Enable for OUT1 | Active-high; internal 0.5μA pulldown enables direct MCU control without external resistor |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | OUT1 = 3.3V (preset), OUT2 = 5V (fixed) - powers mixed-voltage automotive subsystems from single IC |
| HOLD self-hold function | Eliminates need for external latching circuitry - simplifies ignition-controlled power sequencing in ECUs |
| WD-DIS watchdog disable | Dedicated pin (Pin 9) allows hardware-level watchdog deactivation - essential for debug or safety-critical fail-safe modes |
| GATEP reverse-battery protection | Integrated driver for external pFET - achieves <50mV drop vs. >600mV for Schottky diode solutions |
| AEC-Q100 qualified | Qualified per AEC-Q100 Rev H Grade 0 (−40°C to +150°C junction) - validated for under-hood deployment |
| Thermal shutdown with hysteresis | Triggers at +165°C with 20°C hysteresis - prevents thermal cycling and ensures safe restart after cooling |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) Camera Module |
|---|---|
Use Scenario: Powering 3.3V MCU core and 5V image sensor interface in diesel/gasoline ECU under wide battery voltage swing (6V–16V) and load-dump events (up to 72V). IC Role / Device Role / Timing Role: Dual LDO regulator + supervisor - provides stable rails and synchronized reset during cold-crank and transient conditions. Use Value: 68μA quiescent current extends battery life in parked state; 72V tolerance avoids external TVS; HOLD enables ignition-key-triggered latching without extra components. |
Use Scenario: Supplying 3.3V ISP and 5V CIS in rear-view camera module mounted near exhaust, subject to −40°C startup and +105°C ambient. IC Role / Device Role / Timing Role: High-temp-stable dual regulator with PFI-based early-warning shutdown before brownout-induced image corruption. Use Value: −40°C to +125°C full-spec operation ensures reliability; PFO alerts host processor 35μs after PFI threshold breach, enabling graceful image buffer flush. |
| Body Control Module (BCM) | Automotive Infotainment Head Unit |
Use Scenario: Powering CAN transceiver (5V), microcontroller (3.3V), and LIN interface in door module with wake-on-LIN capability. IC Role / Device Role / Timing Role: Dual-output regulator with ENABLE2-gated 5V rail and WDI-monitored 3.3V domain - enables selective subsystem wake-up. Use Value: Independent ENABLE1/ENABLE2 control reduces system-level leakage; WD-DIS pin allows disabling watchdog during firmware update without software intervention. |
Use Scenario: Providing clean 3.3V core and 5V USB-peripheral rails in head unit with thermal constraints due to display backlight heat. IC Role / Device Role / Timing Role: Thermally robust TQFN-20EP regulator with exposed pad - dissipates 2.7W continuously, supporting high-load operation near hot components. Use Value: 5mm × 5mm footprint saves board space; thermal shutdown + hysteresis prevents intermittent failure during prolonged summer operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPVD2+T | Dual-output variant with identical 3.3V/5V outputs, but includes windowed watchdog (WDS0/WDS1) instead of WD-DIS | Required where min/max watchdog timing windows are needed for functional safety compliance (e.g., ISO 26262 ASIL-B) | Select MAX6794TPVD2+T only if windowed watchdog behavior is mandated; MAX6793TPVD2+T offers simpler disable control via dedicated WD-DIS pin |
| TLE42744G V33 | Single 3.3V output (no 5V rail), 150mA, 40V max input, no integrated watchdog or PFI, but includes current-limit flag | Suitable for cost-sensitive modules needing only one regulated rail and basic protection - lacks supervision features | Choose TLE42744G V33 for simplified single-rail designs without reset/watchdog requirements; MAX6793TPVD2+T required when dual-rail + supervision are mandatory |
Compared with MAX6794TPVD2+T and TLE42744G V33, MAX6793TPVD2+T uniquely combines dual-rail output, WD-DIS hardware disable, and AEC-Q100 Grade 0 qualification in a single 20-pin TQFN - making it optimal for compact, safety-aware automotive nodes requiring both flexibility and deterministic supervision control.
Availability
MAX6793TPVD2+T is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, body control modules, and infotainment head units requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX6793TPVD2+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, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.
The MAX6793TPVD2+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with integrated supervision - engineered specifically for automotive ECU and ADAS power domains demanding ultra-low IQ, load-dump immunity, and AEC-Q100 compliance.
FAQ
What output voltages does the MAX6793TPVD2+T provide?
The MAX6793TPVD2+T provides two independent outputs: OUT1 is preset to 3.3V (as indicated by the 'V' in the part number), and OUT2 is a fixed 5V rail. Both outputs are guaranteed over the full −40°C to +125°C temperature range and support up to 150mA each. The 3.3V output is selected by grounding the SET1 pin; no external feedback resistors are needed for this configuration.
How is the reset timeout period configured on the MAX6793TPVD2+T?
The MAX6793TPVD2+T uses the 'D2' suffix to indicate a factory-configured 12.5ms reset timeout period. This is implemented by connecting the CSRT pin to OUT1 internally during wafer sort. For field-adjustable timing, a capacitor can be connected from CSRT to GND - yielding timeouts from ~35μs to 260ms depending on capacitance value, per the datasheet's CSRT ramp current (1000nA typical) and threshold (1.218V).
Does the MAX6793TPVD2+T support watchdog disable, and how is it implemented?
Yes, the MAX6793TPVD2+T supports hardware watchdog disable via the WD-DIS pin (Pin 9). Driving WD-DIS low disables the watchdog timer entirely - preventing any WDI-triggered reset assertion. This differs from MAX6791/MAX6792, which require WDS0/WDS1 logic combinations. WD-DIS simplifies safety-critical firmware updates or diagnostic modes where watchdog supervision must be unconditionally suspended.
What is the purpose of the HOLD pin on the MAX6793TPVD2+T, and how does it interact with ENABLE1?
The HOLD pin (Pin 12) on the MAX6793TPVD2+T enables self-holding behavior: once ENABLE1 is asserted and OUT1 turns on, pulling HOLD low latches the regulator ON - even if ENABLE1 later returns low. Releasing HOLD (to high-impedance or OUT1) shuts down OUT1/OUT2. This eliminates external latch circuitry in ignition-switched automotive systems, and is distinct from standard enable behavior. HOLD is internally pulled up to OUT1 with 2µA.
Is the MAX6793TPVD2+T qualified for automotive use, and what standards does it meet?
Yes, the MAX6793TPVD2+T is AEC-Q100 qualified (Grade 0, −40°C to +150°C junction temperature) and specified for continuous operation from −40°C to +125°C ambient. It meets automotive requirements including 72V load-dump survivability, reverse-battery protection (via GATEP), and built-in thermal/short-circuit/overvoltage protection - all verified per AEC-Q100 stress test conditions and lifetime reliability protocols.
MAX6793TPVD2+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:
- 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+T FAQ
1.How can I place an order for MAX6793TPVD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPVD2+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 MAX6793TPVD2+T reliable?
The price and inventory of MAX6793TPVD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPVD2+T is usually 5 days.
3.What payment methods are accepted for MAX6793TPVD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPVD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPVD2+T?
MAX6793TPVD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPVD2+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 MAX6793TPVD2+T?
For technical support, including MAX6793TPVD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPVD2+T requirements.
6.How does Aetrix verify that MAX6793TPVD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6793TPVD2+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 MAX6793TPVD2+T meets industry standards.
7.What is the process for return or replacement of MAX6793TPVD2+T?
All MAX6793TPVD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPVD2+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 MAX6793TPVD2+T part is unused and in its original packaging.
Return procedure for MAX6793TPVD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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