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Analog Devices Inc./Maxim Integrated MAX6793TPLD2+
- Part No.:
- MAX6793TPLD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPLD2+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6793TPLD2+ from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. 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 adjustable reset timeout (12.5ms), watchdog disable, and HOLD self-hold functionality - used in engine control units and body electronics where load-dump resilience and low-power wake-up are critical.
For engineers reviewing the MAX6793TPLD2+ datasheet, MAX6793TPLD2+ pinout, MAX6793TPLD2+ application, or MAX6793TPLD2+ equivalent, this page provides verified technical context, exact pin roles, automotive-grade thermal performance (–40°C to +125°C), confirmed reset threshold behavior (87.5% of OUT1), and validated alternative options for dual-output high-voltage supervision.
Technical Context
The MAX6793TPLD2+ implements two independent LDO regulators: OUT1 is adjustable (1.8V–11V) or preset (5V/3.3V/2.5V/1.8V) via SET1, while OUT2 is fixed at 5V. Its supervisory block includes an open-drain RESET output with 87.5% nominal threshold and capacitor-adjustable timeout (D2 = 12.5ms), plus a watchdog timer with fixed 280ms timeout (CSWT tied to OUT1) and WD-DIS disable control.
It integrates HOLD functionality that latches OUT1/OUT2 ON after initial enable, independent of ENABLE1/ENABLE2 state, and supports reverse-battery protection via GATEP-driven pFET. All protections - thermal shutdown (+165°C), short-circuit current limit (~240mA), and output overvoltage clamp (1.05×VOUT) - are fully specified across –40°C to +125°C.
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 modules meeting ISO 16750-2 sleep-current requirements. |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient to power microcontrollers, CAN transceivers, and sensors simultaneously. |
| Reset Threshold | 87.5% of OUT1 nominal voltage - ensures reliable brownout detection before MCU functional failure. |
| Reset Timeout | 12.5ms (D2 option) - meets automotive reset timing requirements for deterministic boot sequencing. |
| Watchdog Timeout | 280ms fixed (CSWT = OUT1) - provides robust firmware hang detection without external timing components. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 stress test conditions. |
Pinout & Package
MAX6793TPLD2+ uses a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad), rated for 2.7W continuous dissipation at +70°C ambient. The exposed pad (EP) must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT1 | Regulator 1 Output | Adjustable (1.8V–11V) or preset (5V/3.3V/2.5V/1.8V); supplies up to 150mA; requires ≥10μF output capacitor. |
| 3 - SET1 | Feedback Input | Connect to GND for preset output; connect external resistor divider for adjustable VOUT1. |
| 4 - PFO | Power-Fail Comparator Output | Open-drain active-low signal asserting when PFI falls below 1.231V - used for early battery-fail warning. |
| 5 - CSWT | Watchdog Timeout Adjust | Tied to OUT1 for fixed 280ms timeout; capacitor to GND enables adjustable period - disables watchdog if left floating. |
| 6 - CSRT | Reset Timeout Adjust | Tied to OUT1 for D2 (12.5ms) fixed timeout; capacitor to GND enables user-defined delay - critical for boot timing compliance. |
| 7 - GND | Ground Reference | Primary analog/digital return; EP must be connected to same ground plane for thermal performance. |
| 8 - RESET | Supervisory Reset Output | Active-low open-drain output asserting when OUT1 drops below 87.5% threshold - directly interfaces µP reset pin. |
| 9 - WDS1 | Watchdog Window Ratio Select | Part of dual-input logic (with WDS0) to configure windowed watchdog on MAX6791/MAX6792; unused on MAX6793. |
| 10 - WDS0 | Watchdog Window Ratio Select | Unused on MAX6793; internal logic ignores these pins - no effect on watchdog behavior. |
| 11 - WDI | Watchdog Input | Falling/rising edge resets watchdog timer; absence of toggle >280ms triggers RESET assertion - monitors firmware liveness. |
| 12 - HOLD | Regulator Hold Input | Active-low latch: forces OUT1/OUT2 ON even after ENABLE1/ENABLE2 goes low - enables ignition-key self-hold circuits. |
| 13, 14 - OUT2 | Regulator 2 Output | Fixed 5V output, 150mA capable; independent of OUT1 regulation - powers auxiliary loads like LIN transceivers. |
| 15 - ENABLE2 | Enable Input 2 | Active-high control for OUT2 only; internally pulled down (0.5μA sink) - allows separate sequencing of dual outputs. |
| 16 - PFI | Power-Fail Input | Resistive-divider input referenced to 1.231V internal threshold - sets custom undervoltage warning point for battery monitoring. |
| 17, 18 - IN | Main Regulator Input | Accepts 5V–72V supply; bypassed with 1μF capacitor to GND - handles wide automotive battery range including cold-crank. |
| 19 - GATEP | pFET Gate Drive | Drives external p-channel MOSFET for reverse-battery protection - eliminates series diode drop and heat loss. |
| 20 - ENABLE1 | Enable Input 1 | Active-high control for OUT1 only; internally pulled down - enables independent startup control of primary regulated rail. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | OUT1 (adjustable/preset) + fixed 5V OUT2 - supports mixed-voltage systems (e.g., 3.3V MCU + 5V sensor interface) without extra regulators. |
| HOLD self-hold circuitry | Eliminates need for external latch components - simplifies ignition-switched power architecture in body control modules. |
| Reverse-battery protection drive | GATEP output controls external pFET - achieves <50mV forward drop vs. >300mV diode solution, improving efficiency and thermal margin. |
| Automotive-grade supervision | RESET with 87.5% threshold + 12.5ms timeout + watchdog disable (WD-DIS) - satisfies ASIL-B diagnostic coverage requirements for power ICs. |
| Thermal robustness | +165°C shutdown with 20°C hysteresis - prevents thermal runaway during sustained high-ambient + high-load operation under hood. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog front-end during cold-crank (5.5V) and load-dump (72V) events. IC Role / Device Role / Timing Role: Dual-output LDO with supervision - OUT1 (3.3V) for MCU core, OUT2 (5V) for CAN PHY; RESET asserts within 35μs of brownout. Use Value: 68μA quiescent current extends battery life in key-off mode; HOLD maintains power during ignition transition without software intervention. |
Use Scenario: Supplies door module MCU, LIN transceiver, and LED drivers in vehicle interior lighting system. IC Role / Device Role / Timing Role: Supervisory regulator - OUT1 (5V) powers LIN bus, OUT2 (3.3V) powers MCU; watchdog monitors firmware execution every 280ms. Use Value: WD-DIS pin allows safe watchdog disable during bootloader execution; PFI/PFO enables graceful shutdown before battery depletion. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Control Unit |
|
Use Scenario: Provides clean 1.8V and 3.3V rails to image sensor and ISP in rear-view camera module exposed to under-hood temperatures. IC Role / Device Role / Timing Role: High-PSRR (69dB @100Hz) dual LDO - OUT1 (1.8V) for sensor analog core, OUT2 (3.3V) for digital interface; RESET ensures known boot state after thermal cycling. Use Value: 5mm × 5mm TQFN with exposed pad sustains 2.7W dissipation at +105°C ambient - avoids derating in compact camera housings. |
Use Scenario: Regulates power to torque-sensing ASIC and motor gate driver in EPS system requiring functional safety compliance. IC Role / Device Role / Timing Role: Safety-monitoring LDO - RESET output feeds ASIL-C MCU's NMI pin; thermal shutdown (+165°C) prevents fault propagation during motor stall. Use Value: Output overvoltage protection (1.05×VOUT) safeguards downstream ASICs from regulator fault-induced damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output high-voltage supervisory regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPLD2+ | Identical pinout, package, and electrical specs; differs only in watchdog architecture - MAX6794 supports windowed watchdog (MIN/MAX timeout), while MAX6793 uses standard single-timer watchdog. | Required where firmware must detect both fast hangs (<6.25ms) and slow hangs (>280ms); not needed for basic periodic watchdog reset. | Select MAX6794TPLD2+ only if windowed watchdog logic is mandated by functional safety analysis (e.g., ISO 26262 ASIL B). |
| TPS7B8750QKVURQ1 | Single-output (5V only), 300mA, 35μA IQ, 4.5V–40V input - lacks dual output, adjustable VOUT, HOLD, and WD-DIS; offers tighter VOUT tolerance (±1%) and integrated enable sequencing. | Suitable for simpler systems needing only one rail; cannot replace MAX6793TPLD2+ in dual-rail designs without adding second regulator. | Choose TPS7B8750QKVURQ1 when space-constrained single-rail applications prioritize ultra-low IQ and AEC-Q100 Grade 0 (–40°C to +150°C) over dual output and supervision flexibility. |
Compared with MAX6794TPLD2+, the MAX6793TPLD2+ offers simplified watchdog control without windowing complexity, reducing firmware overhead; versus TPS7B8750QKVURQ1, it provides dual-rail capability and HOLD latching essential for ignition-switched architectures, albeit with higher IQ and wider input range.
Availability
MAX6793TPLD2+ is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera ECUs, and electric power steering systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6793TPLD2+ 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 developed specifically for automotive power-supply supervision - integrating high-voltage LDOs, RESET, watchdog, HOLD, and reverse-battery protection into a single AEC-Q100-qualified device.
FAQ
What output voltage options does the MAX6793TPLD2+ support?
The MAX6793TPLD2+ supports preset output voltages of 5V, 3.3V, 2.5V, or 1.8V on OUT1, selectable by grounding SET1. It also supports adjustable OUT1 from 1.8V to 11V using an external resistor divider. OUT2 is fixed at 5V. The "D2" in MAX6793TPLD2+ indicates the reset timeout is configured for 12.5ms, not output voltage selection.
Does the MAX6793TPLD2+ include reverse-battery protection?
Yes, the MAX6793TPLD2+ includes reverse-battery protection circuitry via its GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the power loss and heat generation of a series Schottky diode, enabling efficient protection against –14V reverse polarity events common in automotive service environments.
How is the watchdog function disabled on the MAX6793TPLD2+?
The watchdog function on the MAX6793TPLD2+ is disabled by driving the WD-DIS pin low. When WD-DIS is low, the watchdog timer is inactive and WDI transitions have no effect. WD-DIS is internally pulled up to OUT1, so connecting it to GND is required for disable - a hardware-controlled, fail-safe method distinct from software register writes.
What is the purpose of the HOLD pin on the MAX6793TPLD2+?
The HOLD pin on the MAX6793TPLD2+ provides self-holding functionality: when driven low after initial enable, it keeps OUT1 and OUT2 active even if ENABLE1 or ENABLE2 returns low. This enables ignition-key-based power sequencing in automotive modules without external latch circuitry - a key feature for body control and infotainment systems.
Is the MAX6793TPLD2+ AEC-Q100 qualified?
Yes, the MAX6793TPLD2+ is AEC-Q100 qualified - specifically, the "/V+" suffix denotes automotive qualification. It is tested and guaranteed over –40°C to +125°C, with full characterization of parameters including dropout voltage, PSRR, reset threshold drift, and thermal shutdown behavior under automotive stress conditions.
MAX6793TPLD2+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.625V, 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)
MAX6793TPLD2+ FAQ
1.How can I place an order for MAX6793TPLD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPLD2+ 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 MAX6793TPLD2+ reliable?
The price and inventory of MAX6793TPLD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPLD2+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPLD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPLD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPLD2+?
MAX6793TPLD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPLD2+ 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 MAX6793TPLD2+?
For technical support, including MAX6793TPLD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPLD2+ requirements.
6.How does Aetrix verify that MAX6793TPLD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPLD2+ 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 MAX6793TPLD2+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPLD2+?
All MAX6793TPLD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPLD2+, 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 MAX6793TPLD2+ part is unused and in its original packaging.
Return procedure for MAX6793TPLD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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