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Analog Devices Inc./Maxim Integrated MAX6793TPMD4+
- Part No.:
- MAX6793TPMD4+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPMD4+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
MAX6793TPMD4+ from Maxim Integrated is a dual-output, ultra-low-quiescent-current linear regulator IC designed for automotive power management. It delivers up to 150mA per output across a 5V–72V input range, features fixed 5V/3.3V outputs (this variant: 3.3V OUT1, 5V OUT2), 68μA quiescent current, and integrated reset/watchdog supervision with 200ms capacitor-adjustable reset timeout (D4 code). It operates in automotive environments including load-dump conditions.
For engineers reviewing the MAX6793TPMD4+ datasheet, MAX6793TPMD4+ pinout, MAX6793TPMD4+ application, or MAX6793TPMD4+ equivalent, this page provides verified technical context, package mapping, supervisory timing values, thermal protection behavior, and AEC-Q100-aligned design intent - all confirmed for the exact MAX6793TPMD4+ variant.
Technical Context
The MAX6793TPMD4+ implements two independent LDO regulators: OUT1 (adjustable or preset 3.3V) and OUT2 (fixed 5V), each rated for 150mA continuous output. Its supervisory block includes an open-drain RESET output with 87.5% reset threshold (S-code), 200ms reset timeout (D4), and watchdog input (WDI) with fixed 280ms timeout or capacitor-adjustable mode.
It integrates HOLD functionality enabling self-holding operation without external components, ENABLE1/ENABLE2 for independent output control, and reverse-battery protection via GATEP-driven pFET. All functions are specified over –40°C to +125°C and qualified per AEC-Q100 requirements for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without shutdown |
| Quiescent Current | 68μA typical - enables always-on systems with minimal battery drain |
| Output Current | 150mA per output - supports dual-rail microcontroller peripherals and sensors |
| Reset Threshold | 87.5% of OUT1 nominal voltage (S-code) - ensures reliable brownout detection at 2.888V for 3.3V OUT1 |
| Reset Timeout | 200ms (D4 code, fixed) - provides sufficient deassertion hold time for μP initialization |
| Watchdog Timeout | 280ms minimum (fixed) - detects firmware lockup in safety-critical automotive nodes |
| Operating Temperature | –40°C to +125°C - fully specified for under-hood and engine-control module deployment |
Pinout & Package
MAX6793TPMD4+ is housed in a 20-pin, 5mm × 5mm thermally enhanced 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 |
|---|---|---|
| OUT1 (Pins 1,2) | Regulator 1 Output | 3.3V fixed output (S-code); requires ≥10μF ceramic capacitor to GND for stability |
| SET1 (Pin 3) | Feedback Input | Connected to GND for preset 3.3V; used with external divider for adjustable output |
| PFO (Pin 4) | Power-Fail Comparator Output | Open-drain active-low signal asserting when PFI falls below 1.231V |
| CSWT (Pin 5) | Watchdog Timeout Adjust | Connected to OUT1 for fixed 280ms timeout; capacitor to GND enables adjustment |
| CSRT (Pin 6) | Reset Timeout Adjust | Connected to OUT1 for fixed 200ms timeout (D4); capacitor enables user-defined delay |
| GND (Pin 7) | Ground Reference | Main signal and power ground; EP must be soldered to PCB ground plane |
| RESET (Pin 8) | Supervisory Reset Output | Active-low open-drain output; asserts during OUT1 undervoltage or watchdog fault |
| WDI (Pin 11) | Watchdog Input | Edge-sensitive input - transition required within watchdog timeout to prevent reset |
| HOLD (Pin 12) | Regulator Hold Control | Active-low; forces OUT1/OUT2 ON even after ENABLE1/ENABLE2 goes low |
| OUT2 (Pins 13,14) | Regulator 2 Output | Fixed 5V output; requires ≥10μF ceramic capacitor to GND |
| ENABLE2 (Pin 15) | Output 2 Enable | Active-high; controls OUT2 independently; internally pulled down (0.5μA sink) |
| PFI (Pin 16) | Power-Fail Input | Resistive-divider input referenced to 1.231V threshold for early battery warning |
| IN (Pins 17,18) | Main Input Supply | Accepts 5V–72V; bypassed with 1μF capacitor to GND per pin |
| GATEP (Pin 19) | pFET Gate Driver | Drives external p-channel MOSFET for reverse-battery protection (no diode drop) |
| ENABLE1 (Pin 20) | Output 1 Enable | Active-high; controls OUT1 independently; internally pulled down (0.5μA sink) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | OUT1 = 3.3V (S-code), OUT2 = 5V - powers mixed-voltage subsystems from single high-voltage rail |
| Self-holding circuit support | HOLD input eliminates need for external latch components in ignition-controlled systems |
| Reverse-battery protection | GATEP drives pFET - achieves <100mV drop vs. >400mV diode solution, improving efficiency |
| Automotive-grade supervision | RESET with 87.5% threshold + 200ms timeout meets ISO 16750-2 cold-cranking and brownout requirements |
| Thermal & fault protection | Integrated thermal shutdown (+165°C), short-circuit limit (~240mA), and output overvoltage clamp (1.05×VOUT) |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powering 3.3V CAN transceivers and 5V image sensor interfaces in under-hood ECU modules subject to 72V load-dump events. IC Role / Device Role / Timing Role: Dual-output LDO with integrated reset supervision ensures deterministic boot sequencing and brownout recovery during cranking. Use Value: 68μA quiescent current prevents battery drain during vehicle sleep; 200ms reset timeout guarantees full μP initialization before release. |
Use Scenario: Supplying vision processor cores and radar preamplifiers in front-camera modules requiring AEC-Q100 compliance and fault resilience. IC Role / Device Role / Timing Role: Supervisory regulator monitors both 3.3V logic and 5V analog rails, asserting RESET on either undervoltage condition. Use Value: Windowed watchdog capability (via WDS0/WDS1) detects both firmware hang and spurious noise-induced resets in safety-critical paths. |
| Body Control Module (BCM) | Infotainment Head Unit |
Use Scenario: Providing regulated 3.3V for LIN transceivers and 5V for EEPROM/RTC in door-module controllers with wake-on-LIN capability. IC Role / Device Role / Timing Role: HOLD input enables self-hold after ignition enable pulse, sustaining power during brief ignition signal loss. Use Value: Dual ENABLE inputs allow independent sequencing of subsystems; GATEP eliminates reverse-battery diode losses in 12V battery architectures. |
Use Scenario: Powering display interface logic and audio codec in head units where thermal dissipation is constrained by plastic enclosures. IC Role / Device Role / Timing Role: Thermally enhanced TQFN package (2.7W dissipation) maintains regulation during sustained 150mA loads at +105°C ambient. Use Value: 5mm × 5mm footprint saves PCB area vs. legacy TO-263 solutions; AEC-Q100 qualification reduces qualification overhead. |
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 |
|---|---|---|---|
| MAX6794TPMD4+ | Same pinout, identical electrical specs, but includes windowed watchdog (WDS0/WDS1) instead of WD-DIS | Preferred where min/max watchdog windowing is required for ASIL-B diagnostics | Select MAX6794TPMD4+ only if windowed watchdog behavior is explicitly needed; MAX6793TPMD4+ uses simpler WD-DIS disable control |
| TLV70733PDRVR | Single 3.3V output, 200mA, 5.5V max input, no supervision - lacks 72V input, RESET, watchdog, or HOLD | Suitable only for non-automotive, low-voltage, non-safety-critical applications | Not a functional substitute; use only in cost-sensitive consumer designs without automotive stress or supervision requirements |
Compared with MAX6794TPMD4+, MAX6793TPMD4+ offers simplified watchdog disable via WD-DIS pin rather than logic-select inputs, reducing routing complexity. Compared with TLV70733PDRVR, it delivers automotive-grade 72V tolerance, dual-rail capability, and full supervisory functionality - making it irreplaceable in AEC-Q100-compliant systems.
Availability
MAX6793TPMD4+ is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, body electronics, and infotainment systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6793TPMD4+ 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 MAX6793TPMD4+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with integrated supervision - engineered specifically for automotive power domains needing robustness against load dump, cold crank, and extended temperature operation.
FAQ
What output voltages does the MAX6793TPMD4+ provide?
The MAX6793TPMD4+ provides two regulated outputs: OUT1 is preset to 3.3V (S-code), and OUT2 is fixed at 5V. Both outputs deliver up to 150mA continuously. The 3.3V output is set by connecting SET1 to GND; OUT2 requires no configuration. This dual-rail capability makes MAX6793TPMD4+ ideal for powering mixed-voltage automotive subsystems.
How is the reset timeout period configured on the MAX6793TPMD4+?
The MAX6793TPMD4+ uses the D4 suffix to indicate a fixed 200ms reset timeout period. This is implemented by connecting CSRT to OUT1/OUT2 - no external capacitor is required. If adjustable timing is needed, a capacitor can be added from CSRT to GND, yielding timeouts from ~35μs to 260ms depending on value. The fixed D4 setting ensures consistent, production-tested timing for automotive boot sequences.
Does the MAX6793TPMD4+ support reverse-battery protection?
Yes, the MAX6793TPMD4+ integrates reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. This replaces lossy series diodes, achieving <100mV forward drop versus >400mV for Schottky solutions. The internal protection circuitry ensures safe operation during –12V reverse-battery transients, a critical requirement for automotive 12V systems.
What is the function of the HOLD pin on the MAX6793TPMD4+?
The HOLD pin on MAX6793TPMD4+ enables self-holding operation: when pulled low after initial enable, it keeps OUT1 and OUT2 active even if ENABLE1 or ENABLE2 returns low. This eliminates external latching circuitry in ignition-switched systems. HOLD is internally pulled up to OUT1 with 2μA, so leaving it unconnected allows standard enable/disable behavior - a flexible feature unique to the MAX6793TPMD4+ among dual-output supervisors.
Is the MAX6793TPMD4+ qualified for automotive use?
Yes, the MAX6793TPMD4+ is AEC-Q100 qualified (Grade 0: –40°C to +125°C) and designed for automotive applications. It meets ISO 16750-2 load-dump (72V), cold-crank (4.5V), and surge immunity requirements. All electrical parameters - including dropout voltage, PSRR, and reset accuracy - are guaranteed across the full temperature range, making MAX6793TPMD4+ suitable for engine control, ADAS, and body electronics.
MAX6793TPMD4+ 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:
- 4.375V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPMD4+ FAQ
1.How can I place an order for MAX6793TPMD4+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPMD4+ 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 MAX6793TPMD4+ reliable?
The price and inventory of MAX6793TPMD4+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPMD4+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPMD4+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPMD4+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPMD4+?
MAX6793TPMD4+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPMD4+ 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 MAX6793TPMD4+?
For technical support, including MAX6793TPMD4+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPMD4+ requirements.
6.How does Aetrix verify that MAX6793TPMD4+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPMD4+ 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 MAX6793TPMD4+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPMD4+?
All MAX6793TPMD4+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPMD4+, 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 MAX6793TPMD4+ part is unused and in its original packaging.
Return procedure for MAX6793TPMD4+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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