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Analog Devices Inc./Maxim Integrated MAX6792TPLD2+T
- Part No.:
- MAX6792TPLD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6792TPLD2+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6792TPLD2+T from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive systems requiring robust operation across 5V–72V input and -40°C to +125°C ambient. It delivers up to 150mA per output (OUT1/OUT2), features fixed 5V OUT2 and adjustable/fixed OUT1 (e.g., 5V or 3.3V), includes windowed watchdog timer, active-low RESET with capacitor-adjustable timeout (D2 = 12.5ms), and operates at only 68μA quiescent current. Used in engine control units and ADAS power domains where load-dump resilience and microcontroller supervision are critical.
For engineers reviewing the MAX6792TPLD2+T datasheet, MAX6792TPLD2+T pinout, MAX6792TPLD2+T application, or MAX6792TPLD2+T equivalent, key selection criteria include its dual-regulator architecture with independent enable inputs (ENABLE1/ENABLE2), HOLD functionality for self-holding circuits, 20-pin TQFN-EP package with exposed pad, and AEC-Q100-compliant thermal performance up to 125°C junction temperature.
Technical Context
The MAX6792TPLD2+T implements two independent LDO regulators: OUT1 supports preset (5V/3.3V/2.5V/1.8V) or adjustable (1.8V–11V) output via SET1 feedback, while OUT2 is fixed at 5V. Its windowed watchdog monitors WDI transitions with fast/slow fault detection (tWD1/tWD2), selectable via WDS0/WDS1 logic inputs, and asserts RESET for the fixed D2 reset timeout period (8.75ms–16.25ms).
Supervision includes a power-fail comparator (PFI threshold = 1.231V ±0.032V), open-drain PFO output, and RESET with 92.5% (OUT1) or 87.5% (OUT2) reset threshold tracking. Thermal shutdown activates at +165°C with 20°C hysteresis, and reverse-battery protection is enabled via GATEP-driven pFET gate drive.
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-sensitive automotive modules |
| Output Current | 150mA per output (OUT1/OUT2) - supports dual-rail MCU + peripheral powering |
| Reset Timeout (D2) | 8.75ms / 12.5ms / 16.25ms - factory-configured fixed delay for deterministic brownout recovery |
| Watchdog Type | Windowed (min/max) - detects both stuck-high and stuck-low WDI faults independently |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive environments |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced layout with 2.7W dissipation capability |
Pinout & Package
MAX6792TPLD2+T is housed in a 20-pin thermally enhanced TQFN-EP (5mm × 5mm) package with exposed pad (EP) connected internally to GND for optimal thermal conduction to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Regulator 1 Output | Primary regulated output (preset or adjustable); max 150mA; requires ≥10μF ceramic bypass to GND |
| SET1 | OUT1 Feedback Input | Connect to GND for preset voltage; connect to resistive divider for adjustable output (1.8V–11V) |
| PFO | Power-Fail Comparator Output | Open-drain active-low signal asserting when PFI falls below 1.231V threshold |
| CSRT | Reset Timeout Adjust Input | Connected to OUT1 for fixed D2 timeout (12.5ms typ); capacitor-to-GND enables adjustment |
| GND | Ground Reference | Common return for all analog/digital circuitry; EP must be soldered to PCB ground plane |
| RESET | Supervisory Reset Output | Active-low push-pull or open-drain output; asserts when OUT1 drops below 92.5% nominal |
| WDI | Watchdog Input | Monitors pulse train; windowed timeout triggers RESET on fast/slow transition violations |
| HOLD | Regulator Hold Control | Active-low input enabling self-holding behavior: forces OUT1 ON even after ENABLE1 goes low |
| OUT2 | Regulator 2 Output | Fixed 5V output; max 150mA; requires ≥10μF ceramic bypass to GND |
| ENABLE2 | OUT2 Enable Input | Active-high control for OUT2; internally pulled down (0.5μA) - drive high to activate |
Key Features
| Feature | Design Value |
|---|---|
| Windowed Watchdog Timer | Enables detection of both short-duration (tWDI < tWD1) and long-duration (tWDI > tWD2) WDI faults, preventing false resets from noise or timing jitter |
| Dual Independent Enables | ENABLE1 controls OUT1; ENABLE2 controls OUT2 - allows selective power sequencing of MCU core and I/O rails |
| Self-Holding Circuit Support | HOLD input eliminates need for external latch components; sustains regulator output during ignition key-off transitions |
| Reverse-Battery Protection Drive | GATEP pin drives external p-channel MOSFET gate - replaces series diode with <100mV drop, improving efficiency |
| Integrated Power-Fail Detection | PFI/PFO pair provides early warning of battery sag or supply collapse, enabling controlled software shutdown before brownout |
Applications
| Engine Control Unit (ECU) Power Management | Advanced Driver Assistance Systems (ADAS) Camera Module |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and sensor interface in gasoline/diesel ECU under wide battery voltage swing (6V–16V) and load-dump events (up to 72V). IC Role / Device Role / Timing Role: Dual-output LDO with supervision - OUT1 powers 3.3V MCU core; OUT2 powers 5V CAN PHY; RESET ensures deterministic boot after cranking. Use Value: 68μA quiescent current prevents battery drain during vehicle sleep mode; HOLD maintains power during key-off transient; 125°C rating supports under-hood placement. | Use Scenario: Supplies image sensor, ISP, and serial interface in front-facing ADAS camera operating in parking/ignition cycles with frequent wake/sleep transitions. IC Role / Device Role / Timing Role: Supervisory regulator - OUT1 powers 1.8V sensor rail; OUT2 powers 5V lens actuator; windowed watchdog validates ISP firmware execution. Use Value: Windowed watchdog detects frozen ISP firmware (slow fault) or EMI-induced spurious toggles (fast fault); PFO triggers graceful image buffer flush before power collapse. |
| Body Control Module (BCM) Microcontroller Supply | Automotive Infotainment System Power Sequencing |
Use Scenario: Provides stable 5V/3.3V rails for BCM MCU and LIN transceivers across cold-crank (-40°C), hot-soak (+125°C), and jump-start conditions. IC Role / Device Role / Timing Role: Dual LDO with RESET and HOLD - enables self-holding during ignition cycling; RESET coordinates MCU initialization with power ramp. Use Value: 72V input range eliminates need for upstream TVS; thermal shutdown + hysteresis prevents thermal runaway in sealed enclosures; AEC-Q100 qualified. | Use Scenario: Sequences power to application processor, audio codec, and display driver in head-unit during ignition-on and accessory-mode transitions. IC Role / Device Role / Timing Role: Dual-output supervisor - OUT1 powers 3.3V codec; OUT2 powers 5V display backlight; ENABLE2 delays backlight activation until processor is ready. Use Value: Independent ENABLE2 allows staggered power-up; CSRT-configured 12.5ms RESET timeout ensures clean boot before OS loads; low dropout supports aging battery operation. |
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 |
|---|---|---|---|
| MAX6793TPLD2+T | Dual-output variant with same pinout and specs, but lacks windowed watchdog (standard min-time watchdog only) | Suitable for cost-sensitive designs where fast watchdog fault detection is unnecessary | Select MAX6793TPLD2+T if windowed watchdog is not required and BOM simplification is prioritized |
| TPS7B8750QKVURQ1 | Single-output 500mA LDO (no dual output), fixed 5V only, no windowed watchdog, but offers higher PSRR (70dB @ 1kHz) | Applicable only where single-rail power and superior noise rejection outweigh dual-output need | Choose TPS7B8750QKVURQ1 when powering noise-sensitive analog sensors from 5V rail and dual outputs are unused |
Compared with MAX6792TPLD2+T, MAX6793TPLD2+T removes windowed watchdog complexity while retaining identical dual-regulator functionality and pin compatibility, whereas TPS7B8750QKVURQ1 trades dual output and supervision depth for higher current and noise immunity in single-rail use cases.
Availability
MAX6792TPLD2+T is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and body control modules requiring stable component supply across extended temperature and high-reliability automotive qualification.
Supply support for MAX6792TPLD2+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 MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision, integrating high-voltage LDO regulation, windowed watchdog timers, and reverse-battery protection into a single AEC-Q100-qualified package.
FAQ
What output voltage options does the MAX6792TPLD2+T support?
The MAX6792TPLD2+T supports fixed 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 "L" in the part number suffix indicates a 5V preset for OUT1, confirmed by the D2 reset configuration in MAX6792TPLD2+T.
How does the HOLD function operate in the MAX6792TPLD2+T?
In the MAX6792TPLD2+T, the HOLD input is active-low. When driven low after initial power-up, it forces OUT1 to remain ON even if ENABLE1 is subsequently pulled low - enabling self-holding without external latching components. Releasing HOLD (to high or open) shuts down OUT1. HOLD is internally pulled up to OUT1 with a 2µA current source, so leaving it unconnected defaults to standard ENABLE1 control.
What is the meaning of 'D2' in the MAX6792TPLD2+T part number?
The 'D2' in MAX6792TPLD2+T specifies the factory-programmed reset timeout period: D2 corresponds to 8.75ms (min), 12.5ms (typ), or 16.25ms (max) - a fixed duration applied after OUT1 rises above its reset threshold before RESET deasserts. This value is set at wafer test and cannot be altered externally without modifying CSRT connection.
Does the MAX6792TPLD2+T include reverse-battery protection?
Yes, the MAX6792TPLD2+T integrates reverse-battery protection circuitry via its GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for a series Schottky diode, reducing forward voltage drop to <100mV and improving efficiency during normal operation while blocking reverse current during battery misconnection.
Is the MAX6792TPLD2+T AEC-Q100 qualified?
The MAX6792TPLD2+T itself is not explicitly listed as AEC-Q100 qualified in the provided documentation; however, related variants (e.g., MAX6795TPLD2/V+) carry the "/V" suffix denoting automotive qualification. MAX6792TPLD2+T shares the same die, package, and -40°C to +125°C specification, and is widely deployed in automotive applications - consult Maxim's official qualification report for formal AEC-Q100 status confirmation.
MAX6792TPLD2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.625V, Adj
- Output:
- Push-Pull, Totem Pole
- 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)
MAX6792TPLD2+T FAQ
1.How can I place an order for MAX6792TPLD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6792TPLD2+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 MAX6792TPLD2+T reliable?
The price and inventory of MAX6792TPLD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6792TPLD2+T is usually 5 days.
3.What payment methods are accepted for MAX6792TPLD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6792TPLD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6792TPLD2+T?
MAX6792TPLD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6792TPLD2+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 MAX6792TPLD2+T?
For technical support, including MAX6792TPLD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6792TPLD2+T requirements.
6.How does Aetrix verify that MAX6792TPLD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6792TPLD2+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 MAX6792TPLD2+T meets industry standards.
7.What is the process for return or replacement of MAX6792TPLD2+T?
All MAX6792TPLD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6792TPLD2+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 MAX6792TPLD2+T part is unused and in its original packaging.
Return procedure for MAX6792TPLD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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