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Analog Devices Inc./Maxim Integrated MAX6792TPSD2+T
- Part No.:
- MAX6792TPSD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6792TPSD2+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,500
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Product details
Overview
The MAX6792TPSD2+T from Maxim Integrated is a dual-output, ultra-low-quiescent-current 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 windowed watchdog timer, RESET with 12.5ms timeout, and HOLD-enabled self-holding circuitry - used in engine control units and body electronics requiring robust brownout recovery.
For engineers reviewing the MAX6792TPSD2+T datasheet, MAX6792TPSD2+T pinout, MAX6792TPSD2+T application, or MAX6792TPSD2+T equivalent, key selection criteria include its dual 5V/5V output configuration, AEC-Q100-qualified thermal performance (−40°C to +125°C), TQFN-20 package with exposed pad, and windowed watchdog with selectable ratio (SET/WDS0/WDS1).
Technical Context
The MAX6792TPSD2+T implements two independent LDO regulators: OUT1 is adjustable (1.8V–11V) or preset (5V/3.3V/2.5V/1.8V) via SET1; OUT2 is fixed 5V. Its windowed watchdog monitors WDI transitions against both minimum (tWD1) and maximum (tWD2) timeout thresholds - asserting RESET if pulse period falls outside either bound.
Supervision includes active-low open-drain RESET with 92.5% reset threshold (relative to OUT1), capacitor-adjustable or fixed 12.5ms timeout (CSRT = D2), and HOLD input that latches regulator ON after initial enable - eliminating external latch components in ignition-controlled systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive automotive modules. |
| Output Current | 150mA per output (OUT1 & OUT2) - supports dual-rail microcontroller and CAN transceiver biasing. |
| Reset Threshold | 92.5% of OUT1 nominal voltage - ensures reliable µP reset before functional undervoltage. |
| Reset Timeout | 12.5ms fixed (D2 option) - meets automotive ASAM-MC requirement for minimum reset assertion duration. |
| Watchdog Type | Windowed (min/max) - detects both stuck-high and stuck-low WDI faults in safety-critical firmware monitoring. |
| Operating Temperature | −40°C to +125°C - fully specified for under-hood automotive placement per AEC-Q100 Grade 0. |
Pinout & Package
MAX6792TPSD2+T is housed in a 5mm × 5mm, 20-pin thermally enhanced TQFN-EP package (exposed pad connected to GND). The package supports up to 2.7W continuous dissipation at +70°C ambient, enabling operation under high VIN, high ILOAD, and elevated temperature conditions.
| 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); 150mA max; requires ≥10µF ceramic output capacitor. |
| 3 / SET1 | OUT1 Feedback Input | Grounded for preset voltage; connected to resistive divider for adjustable output - sets VOUT1 = 1.231V × (1 + R1/R2). |
| 4 / PFO | Power-Fail Comparator Output | Open-drain, active-low signal triggered when PFI < 1.231V - used for early battery low-warning or pre-shutdown signaling. |
| 5 / CSWT | Watchdog Timeout Adjust | Connected to OUT1 for fixed 280ms timeout; capacitor-to-GND enables adjustable windowed watchdog timing. |
| 6 / CSRT | Reset Timeout Adjust | Connected to OUT1 selects D2 (12.5ms) reset timeout; capacitor-to-GND allows user-defined assertion duration. |
| 7 / GND | Ground Reference | Main signal and power ground; EP pad must be soldered to PCB ground plane for thermal and EMI performance. |
| 8 / RESET | Supervisory Reset Output | Active-low, open-drain; asserts when OUT1 drops below 92.5% threshold or watchdog fault occurs. |
| 9 / WDS1 | Watchdog Window Ratio Select | With WDS0, selects min/max watchdog window ratio (8×, 16×, or 64×) - defines tWD1 relative to tWD2. |
| 10 / WDS0 | Watchdog Window Ratio Select | Paired with WDS1 to configure windowed watchdog behavior or disable watchdog (WDS0=high, WDS1=low). |
| 11 / WDI | Watchdog Input | Edge-sensitive input; rising/falling transitions must occur within tWD1–tWD2 window to prevent RESET assertion. |
| 12 / HOLD | Regulator Hold Control | Active-low; forces OUT1/OUT2 ON even after ENABLE1 goes low - enables self-holding ignition circuits. |
| 13, 14 / OUT2 | Regulator 2 Output | Fixed 5V output, 150mA max; independent of OUT1; requires ≥10µF output capacitor. |
| 15 / ENABLE2 | OUT2 Enable Input | Active-high; internal 0.5µA pulldown - enables/disables OUT2 independently of OUT1 and HOLD state. |
| 16 / PFI | Power-Fail Input | Resistive-divider input referenced to 1.231V internal threshold - sets custom battery or rail fail point. |
| 17, 18 / IN | Main Regulator Input | Accepts 5V–72V; bypassed with 1µF ceramic capacitor to GND for stability and transient immunity. |
| 19 / GATEP | pFET Gate Drive | Drives external p-channel MOSFET for reverse-battery protection - eliminates series diode voltage drop. |
| 20 / ENABLE1 | OUT1 Enable Input | Active-high; internal 0.5µA pulldown - primary ON/OFF control for OUT1; overridden by HOLD when asserted. |
Key Features
| Feature | Design Value |
|---|---|
| Windowed Watchdog Timer | Simultaneously monitors minimum and maximum WDI pulse intervals - detects firmware lockup *and* runaway execution. |
| HOLD-Controlled Self-Holding | Eliminates need for external latch or MCU GPIO to sustain regulator ON state after ignition key release. |
| Reverse-Battery Protection Driver | GATEP output drives pFET gate directly - achieves <50mV dropout vs. >300mV Schottky solution, improving cold-cranking margin. |
| AEC-Q100 Qualified | Qualified to Grade 0 (−40°C to +125°C) - validated for under-hood deployment without derating. |
| Dual Independent Enables | ENABLE1 and ENABLE2 allow separate sequencing of OUT1 and OUT2 - supports multi-rail power-up timing requirements. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powers 32-bit MCU, CAN transceiver, and sensor interface in diesel ECU exposed to 65V load-dump events. IC Role / Device Role / Timing Role: Dual-output LDO with windowed watchdog serves as primary power supervisor and firmware health monitor. Use Value: 72V input range and 12.5ms RESET ensure deterministic restart after cranking transients; HOLD sustains power during key-off diagnostics. |
Use Scenario: Supplies 5V to door module MCU and 3.3V to LIN transceiver in 12V vehicle architecture. IC Role / Device Role / Timing Role: Dual-regulator provides isolated rails with independent enable control and shared RESET signaling. Use Value: 150mA per output supports concurrent MCU + transceiver operation; PFI/PFO enables battery voltage graceful shutdown. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Telematics Control Unit (TCU) |
|
Use Scenario: Powers image sensor, ISP, and Ethernet PHY in front-facing camera exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: High-temp LDO with thermal shutdown and watchdog ensures vision system reliability during extended parking heat soak. Use Value: −40°C to +125°C operation and 165°C thermal shutdown prevent latch-up; GATEP enables reverse-polarity protection without diode loss. |
Use Scenario: Provides always-on 5V rail and switched 3.3V rail for cellular modem, GNSS receiver, and secure element in telematics gateway. IC Role / Device Role / Timing Role: Low-IQ regulator maintains RTC and wake logic while enabling full system boot on cellular event. Use Value: 68μA quiescent current extends battery backup time; CSRT-adjustable RESET supports modem-specific boot timing. |
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 |
|---|---|---|---|
| MAX6794TPSD2+T | Dual-output like MAX6792TPSD2+T but with identical 5V/5V outputs (no adjustable OUT1); same pinout and supervision features. | Suitable where both rails require fixed 5V (e.g., dual-core MCU with separate I/O and core supplies). | Select MAX6794TPSD2+T when adjustable OUT1 is unnecessary and BOM simplification is prioritized. |
| TLV70733PDQNR | Single 3.3V, 300mA LDO with 25μA IQ and no watchdog/supervision; SOT-23-5, 2.9V–5.5V input only. | Limited to low-voltage, non-automotive applications; lacks reset, watchdog, HOLD, or high-VIN capability. | Use TLV70733PDQNR only for cost-sensitive, non-safety, low-input-voltage consumer designs - not an automotive replacement. |
Compared with MAX6794TPSD2+T, the MAX6792TPSD2+T offers adjustable OUT1 for flexible rail generation, while TLV70733PDQNR lacks high-VIN operation, supervision, and automotive qualification - making it unsuitable for direct substitution in automotive systems.
Availability
MAX6792TPSD2+T is available at Aetrix Electronics and suitable for automotive engine control, body electronics, ADAS camera ECUs, and telematics gateways requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAX6792TPSD2+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 MAX6792TPSD2+T belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators with integrated supervision - engineered specifically for automotive subsystems needing robust power sequencing, fault detection, and extended temperature operation.
FAQ
What output voltage options does the MAX6792TPSD2+T support?
The MAX6792TPSD2+T supports preset output voltages of 5.0V (OUT1 and OUT2), 3.3V, 2.5V, or 1.8V on OUT1 - selected by grounding SET1 - and a fixed 5.0V on OUT2. OUT1 can also be adjusted from 1.8V to 11V using an external resistor divider connected to SET1. The "SD2" suffix confirms 5V/5V dual-output configuration with 12.5ms reset timeout.
How does the windowed watchdog function in the MAX6792TPSD2+T?
The MAX6792TPSD2+T implements a windowed watchdog that asserts RESET if the WDI signal remains static longer than tWD2 (slow fault) *or* toggles faster than tWD1 (fast fault). WDS0 and WDS1 select the window ratio (8×, 16×, or 64×), enabling detection of both firmware hangs and infinite loops - a critical feature for ISO 26262-compliant systems using the MAX6792TPSD2+T.
Can the MAX6792TPSD2+T operate with reverse battery connection?
Yes - the MAX6792TPSD2+T includes GATEP output that drives an external p-channel MOSFET to block reverse current. When reverse polarity is applied, GATEP holds the MOSFET gate near source potential, turning it off and preventing damage. This eliminates the 300–500mV forward drop of a series diode, preserving voltage headroom during cold-cranking - a key advantage of the MAX6792TPSD2+T in 12V automotive systems.
What is the role of the HOLD pin on the MAX6792TPSD2+T?
The HOLD pin on the MAX6792TPSD2+T is an active-low input that latches the regulator ON after initial power-up, even if ENABLE1 is subsequently deasserted. This enables self-holding ignition circuits without external components. To shut down, HOLD must be released (pulled high or left floating) *after* ENABLE1 is low. This behavior is confirmed in the MAX6792TPSD2+T functional diagram and electrical characteristics table.
Is the MAX6792TPSD2+T qualified for automotive use?
Yes - the MAX6792TPSD2+T is AEC-Q100 qualified (Grade 0) and specified for −40°C to +125°C operation. Its 72V input rating, thermal shutdown at +165°C, and built-in protections (overcurrent, overvoltage, reverse-battery) meet stringent automotive reliability requirements. The "/V" designation in related variants (e.g., MAX6792TPSD2/V+) explicitly denotes automotive qualification - and the MAX6792TPSD2+T shares identical die and qualification.
MAX6792TPSD2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.888V, 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)
MAX6792TPSD2+T FAQ
1.How can I place an order for MAX6792TPSD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6792TPSD2+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 MAX6792TPSD2+T reliable?
The price and inventory of MAX6792TPSD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6792TPSD2+T is usually 5 days.
3.What payment methods are accepted for MAX6792TPSD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6792TPSD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6792TPSD2+T?
MAX6792TPSD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6792TPSD2+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 MAX6792TPSD2+T?
For technical support, including MAX6792TPSD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6792TPSD2+T requirements.
6.How does Aetrix verify that MAX6792TPSD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6792TPSD2+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 MAX6792TPSD2+T meets industry standards.
7.What is the process for return or replacement of MAX6792TPSD2+T?
All MAX6792TPSD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6792TPSD2+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 MAX6792TPSD2+T part is unused and in its original packaging.
Return procedure for MAX6792TPSD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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