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Analog Devices Inc./Maxim Integrated MAX6793TPMD3+T
- Part No.:
- MAX6793TPMD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPMD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,336
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Product details
Overview
MAX6793TPMD3+T from Maxim Integrated is a dual-output, ultra-low-quiescent-current linear regulator for automotive systems, featuring 5V to 72V input range, 150mA per output, 68μA quiescent current, and integrated reset/watchdog supervision. It delivers fixed 5V on OUT2 and adjustable or preset (3.3V/2.5V/1.8V/5V) output on OUT1, with thermal/short-circuit protection and AEC-Q100-compliant operation from –40°C to +125°C.
For engineers reviewing the MAX6793TPMD3+T datasheet, MAX6793TPMD3+T pinout, MAX6793TPMD3+T application, or MAX6793TPMD3+T equivalent, key selection criteria include dual-rail voltage sequencing, capacitor-adjustable 50ms reset timeout (D3), 87.5% reset threshold for OUT1, watchdog disable capability via WD-DIS, and TQFN-20EP package compatibility with high-temperature under-hood environments.
Technical Context
The MAX6793TPMD3+T implements two independent LDO regulators: OUT1 (adjustable or preset) and fixed 5V OUT2, each with dedicated enable (ENABLE1/ENABLE2) and shared HOLD for self-holding control. Its supervisory block includes a push-pull or open-drain RESET output triggered by OUT1 voltage drop below 87.5% of nominal, plus a watchdog timer with fixed 280ms timeout or capacitor-adjustable period.
It integrates reverse-battery protection via GATEP-driven pFET, power-fail detection (PFI/PFO) with 1.231V internal reference, and thermal shutdown at +165°C with 20°C hysteresis. All functions operate across –40°C to +125°C and support AEC-Q100 stress testing per automotive qualification requirements.
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 automotive modules |
| Output Current | 150mA per output - supports dual-rail MCU + peripheral powering (e.g., CAN transceiver + sensor interface) |
| Reset Timeout | 50ms (D3 option) - ensures reliable microcontroller initialization after brownout recovery |
| Reset Threshold | 87.5% of OUT1 nominal - matches standard 3.3V/2.5V/1.8V/5V outputs for precise undervoltage detection |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation in high-ambient under-hood use |
| Operating Temp | –40°C to +125°C - fully specified for engine compartment and transmission control unit deployment |
Pinout & Package
MAX6793TPMD3+T is housed in a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad). The EP pad must be soldered to PCB ground plane for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 (Pins 1,2) | Primary regulator output | Delivers preset (3.3V/2.5V/1.8V/5V) or adjustable (1.8V–11V) voltage; requires ≥10μF output capacitor |
| SET1 (Pin 3) | Feedback input | Grounded for preset output; connected to resistive divider for adjustable VOUT1 |
| PFO (Pin 4) | Power-fail comparator output | Open-drain active-low signal asserting when PFI < 1.231V; used for early battery low warning |
| CSWT (Pin 5) | Watchdog timeout adjust | Connected to OUT1 for fixed 280ms timeout; capacitor-to-GND enables adjustable period |
| CSRT (Pin 6) | Reset timeout adjust | Connected to OUT1 for fixed 50ms (D3) timeout; capacitor-to-GND enables other durations |
| GND (Pin 7) | Ground reference | Common return for all analog/digital circuits; tied to EP pad for thermal conduction |
| RESET (Pin 8) | Supervisory reset output | Push-pull or open-drain active-low signal synchronized to OUT1 undervoltage or watchdog fault |
| WDI (Pin 11) | Watchdog input | Edge-sensitive input requiring toggle within timeout window to prevent RESET assertion |
| HOLD (Pin 12) | Regulator hold control | Active-low input enabling self-holding circuit: forces OUT1 ON even after ENABLE1 goes low |
| OUT2 (Pins 13,14) | Secondary regulator output | Fixed 5V output; independent of OUT1; requires ≥10μF output capacitor |
| ENABLE2 (Pin 15) | OUT2 enable input | Active-high logic input controlling only OUT2; internally pulled down (0.5μA sink) |
| PFI (Pin 16) | Power-fail comparator input | Non-inverting input referenced to 1.231V; used with resistor divider to set custom brownout threshold |
| IN (Pins 17,18) | Main supply input | Accepts 5V–72V; bypassed with ≥1μF capacitor to GND for stability |
| GATEP (Pin 19) | pFET gate driver | Drives external p-channel MOSFET for reverse-battery protection; eliminates series diode loss |
| ENABLE1 (Pin 20) | OUT1 enable input | Active-high logic input controlling only OUT1; internally pulled down (0.5μA sink) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | Enables simultaneous 3.3V MCU core + 5V I/O rail generation with separate enable/control |
| Capacitor-adjustable reset timeout | Supports system-specific reset timing (e.g., 50ms D3 variant) without firmware changes |
| WD-DIS watchdog disable input | Hardware-level watchdog deactivation during debug or safe mode-no software dependency |
| Self-holding circuit via HOLD | Eliminates external latch components for ignition-key-triggered power sequencing |
| Reverse-battery protection driver | GATEP output drives pFET to block –12V/–24V battery reversal without diode voltage drop |
| AEC-Q100 qualified design | Validated for automotive temperature, vibration, and ESD stress per Grade 0/1 requirements |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Camera ECU |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and door-lock actuator drivers in vehicle body electronics. IC Role / Device Role / Timing Role: Dual-output regulator providing 3.3V for MCU core and 5V for CAN PHY, with RESET ensuring deterministic boot after battery disconnect/reconnect. Use Value: 68μA quiescent current minimizes parasitic drain during vehicle sleep mode; HOLD enables ignition-triggered latching without external circuitry. | Use Scenario: Supplying image sensor, ISP, and Ethernet PHY in front-facing ADAS camera with strict thermal limits. IC Role / Device Role / Timing Role: Primary power source delivering 5V to sensor and 3.3V to ISP, with watchdog monitoring ISP firmware execution and asserting RESET on hang. Use Value: 72V input tolerance survives load-dump events; TQFN-20EP package dissipates 2.7W enabling continuous operation at +105°C ambient. |
| Transmission Control Unit (TCU) | Electric Power Steering (EPS) Controller |
Use Scenario: Regulating power for solenoid drivers, position sensors, and safety MCU in automatic transmission systems. IC Role / Device Role / Timing Role: Dual-rail supervisor supplying 5V to analog front-end and 3.3V to safety-certified MCU, with PFI monitoring pre-regulated battery voltage. Use Value: PFI comparator provides early warning of battery sag before critical brownout; thermal shutdown at +165°C prevents failure during extended high-load operation. | Use Scenario: Powering torque sensor interface, motor gate drivers, and ASIL-B MCU in electric power steering systems. IC Role / Device Role / Timing Role: High-reliability regulator with watchdog supervision and reverse-battery protection via GATEP-driven pFET. Use Value: GATEP eliminates series diode loss, improving efficiency in 12V/24V EPS systems; AEC-Q100 qualification ensures compliance with ISO 26262 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPMD3+T | Dual-output like MAX6793TPMD3+T but includes windowed watchdog (min/max timeout) instead of standard watchdog | Required where watchdog fault classification (fast vs. slow timeout violation) is needed for diagnostic logging | Select MAX6794TPMD3+T only if windowed watchdog behavior is explicitly required; otherwise MAX6793TPMD3+T offers simpler implementation |
| TLV70733PDQNR | Single-output 3.3V LDO (200mA), no supervision, 5.5V max input, no AEC-Q100 rating | Limited to low-voltage, non-automotive applications without reset/watchdog or high-voltage tolerance | Not suitable as direct alternative; only consider for cost-sensitive, non-automotive designs with VIN < 5.5V and no supervision needs |
Compared with MAX6794TPMD3+T, the MAX6793TPMD3+T omits windowed watchdog logic-reducing complexity and BOM count-while retaining identical dual-rail regulation, 50ms reset timeout, and AEC-Q100 qualification. TLV70733PDQNR lacks high-voltage capability, supervision, and automotive qualification, making it unsuitable for replacement in automotive contexts.
Availability
MAX6793TPMD3+T is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera ECUs, transmission control units, and electric power steering controllers requiring stable component supply across extended temperature ranges and high-reliability operation.
Supply support for MAX6793TPMD3+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 demanding industrial, automotive, and communications applications.
The MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision, combining high-input-voltage LDO regulation with integrated reset, watchdog, power-fail detection, and reverse-battery protection in a single AEC-Q100-qualified package.
FAQ
What output voltage options does the MAX6793TPMD3+T support?
The MAX6793TPMD3+T supports preset output voltages of 5V, 3.3V, 2.5V, or 1.8V on OUT1, and a fixed 5V on OUT2. OUT1 can also be adjusted from 1.8V to 11V using an external resistive divider connected to SET1. The "M" in MAX6793TPMD3+T denotes a 3.3V preset for OUT1, confirmed by Maxim's ordering guide and electrical characteristics tables.
How is the 50ms reset timeout implemented in the MAX6793TPMD3+T?
The MAX6793TPMD3+T achieves its 50ms reset timeout (D3 option) by connecting CSRT to OUT1, selecting the internally fixed duration. This is verified in the Electrical Characteristics table (tRP = 35/50/65ms for D0/D3/D4), and confirmed in the Pin Description where CSRT is defined as the reset timeout adjust input with OUT1 connection enabling fixed timing.
Does the MAX6793TPMD3+T include reverse-battery protection?
Yes, the MAX6793TPMD3+T includes reverse-battery protection via the GATEP pin, which drives the gate of an external p-channel MOSFET to block reverse current. This eliminates the need for series Schottky diodes, reducing voltage drop and power loss-critical for 12V/24V automotive systems where efficiency and thermal management are essential.
What is the function of the WD-DIS pin on the MAX6793TPMD3+T?
The WD-DIS pin on the MAX6793TPMD3+T provides hardware-level watchdog disable: driving WD-DIS low disables the watchdog timer entirely, preventing RESET assertion regardless of WDI state. This enables safe debug modes or fail-safe states without firmware intervention, and is distinct from the WDS0/WDS1 configuration used in MAX6791/MAX6792 windowed variants.
Is the MAX6793TPMD3+T AEC-Q100 qualified?
Yes, the MAX6793TPMD3+T is AEC-Q100 qualified, as confirmed by Maxim's ordering information listing "/V" suffix variants (e.g., MAX6795TPLD2/V+) and explicit mention in the Benefits and Features section. While MAX6793TPMD3+T itself carries the "+" (lead-free) and "T" (tape-and-reel) suffixes, its underlying die and package meet AEC-Q100 Grade 1 requirements for automotive use from –40°C to +125°C.
MAX6793TPMD3+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:
- 4.375V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPMD3+T FAQ
1.How can I place an order for MAX6793TPMD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPMD3+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 MAX6793TPMD3+T reliable?
The price and inventory of MAX6793TPMD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPMD3+T is usually 5 days.
3.What payment methods are accepted for MAX6793TPMD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPMD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPMD3+T?
MAX6793TPMD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPMD3+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 MAX6793TPMD3+T?
For technical support, including MAX6793TPMD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPMD3+T requirements.
6.How does Aetrix verify that MAX6793TPMD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6793TPMD3+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 MAX6793TPMD3+T meets industry standards.
7.What is the process for return or replacement of MAX6793TPMD3+T?
All MAX6793TPMD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPMD3+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 MAX6793TPMD3+T part is unused and in its original packaging.
Return procedure for MAX6793TPMD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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