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Analog Devices Inc./Maxim Integrated MAX6793TPTD2+
- Part No.:
- MAX6793TPTD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPTD2+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,636
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Product details
Overview
The MAX6793TPTD2+ 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 across a 5V–72V input range, features a 5V fixed OUT1 and adjustable OUT2 (1.8V–11V), consumes only 68μA quiescent current, and includes push-pull RESET, watchdog timer, and HOLD functionality - enabling robust microcontroller power sequencing in engine control units.
For engineers reviewing the MAX6793TPTD2+ datasheet, MAX6793TPTD2+ pinout, MAX6793TPTD2+ application, or MAX6793TPTD2+ equivalent, key selection criteria include its dual-regulator architecture with independent ENABLE1/ENABLE2 control, fixed 5V + adjustable output configuration, AEC-Q100-qualified thermal performance (−40°C to +125°C), and integrated reverse-battery protection via GATEP drive.
Technical Context
The MAX6793TPTD2+ implements two independent LDO regulators: OUT1 is fixed at 5V (±2.5% over temperature), while OUT2 is adjustable via SET1 feedback (1.8V–11V) or preset options (3.3V/2.5V/1.8V). Its supervisory block integrates a windowed watchdog timer (with WDS0/WDS1 select), capacitor-adjustable reset timeout (D2 = 12.5ms), and active-low open-drain PFO comparator referenced to 1.231V.
It supports automotive-grade operation with thermal shutdown at +165°C (20°C hysteresis), short-circuit current limiting (200–240mA), and output overvoltage protection (105–110% of VOUT). The HOLD input enables self-holding behavior without external circuitry, and GATEP drives an external pFET for reverse-battery protection.
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 systems with ultra-low standby power consumption. |
| Output Current | 150mA per output - sufficient for MCU cores, CAN transceivers, and sensor interfaces. |
| Dropout Voltage | 840mV typ at 100mA - ensures regulation under high VIN–VOUT differentials common in 12V/24V automotive systems. |
| Reset Timeout | 12.5ms (D2 option) - provides deterministic microcontroller reset hold time after brownout recovery. |
| Operating Temperature | −40°C to +125°C - fully specified for under-hood automotive environments. |
| Watchdog Timeout | 280ms min (fixed) or capacitor-adjustable - detects firmware hangs in safety-critical ECUs. |
Pinout & Package
Package: 20-pin TQFN-EP (5mm × 5mm, exposed pad), thermally enhanced for 2.7W dissipation at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT1 | Fixed 5V regulator output | Primary regulated rail for MCU core logic; requires ≥10μF ceramic output capacitor. |
| 3 - SET1 | Feedback input for OUT2 | Connect to GND for preset OUT2 voltage; connect resistive divider for adjustable 1.8V–11V output. |
| 4 - PFO | Active-low power-fail comparator output | Signals early battery voltage drop (threshold = 1.231V on PFI); open-drain, requires pull-up. |
| 5 - CSWT | Watchdog timeout adjust input | Connect to OUT1 for fixed 280ms timeout; connect capacitor to GND for adjustable period. |
| 6 - CSRT | Reset timeout adjust input | Configured as D2 (12.5ms) for MAX6793TPTD2+; ties to OUT1 for fixed timing. |
| 7 - GND | Power and signal ground | Reference for all analog/digital blocks; connects to exposed pad (EP) for thermal conduction. |
| 8 - RESET | Active-low reset output | Push-pull type; asserts low during OUT1 undervoltage or watchdog fault; holds for 12.5ms post-recovery. |
| 11 - WDI | Watchdog input | Edge-sensitive; must toggle within watchdog timeout to prevent reset assertion. |
| 12 - HOLD | Active-low regulator hold enable | Forces OUT1/OUT2 ON even if ENABLE1/ENABLE2 goes low - enables ignition-key self-hold circuits. |
| 13, 14 - OUT2 | Second regulator output | Fixed 5V output (per MAX6793 family); supplies peripherals such as LIN transceivers or sensors. |
| 15 - ENABLE2 | Active-high enable for OUT2 | Independent control of second output; internally pulled down (0.5μA sink). |
| 16 - PFI | Power-fail comparator input | Resistive-divider input referenced to 1.231V; used for battery monitoring or pre-regulator supervision. |
| 17, 18 - IN | Main regulator input | Accepts 5V–72V; bypass with 1μF capacitor to GND for stability. |
| 19 - GATEP | pFET gate driver | Drives external p-channel MOSFET for reverse-battery protection; eliminates series diode loss. |
| 20 - ENABLE1 | Active-high enable for OUT1 | Primary ON/OFF control for 5V rail; internally pulled down (0.5μA sink). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | Enables separate power domains: fixed 5V for MCU core + configurable 5V/3.3V/2.5V/1.8V for I/O/peripherals. |
| HOLD + ENABLE1/ENABLE2 logic | Supports ignition-key-driven self-holding without external latching components - reduces BOM count and PCB area. |
| GATEP reverse-battery driver | Eliminates need for series Schottky diode; maintains <100mV forward drop and full 72V transient tolerance. |
| Capacitor-adjustable reset & watchdog | Allows precise tuning of tRP and tWD to match system boot timing and firmware watchdog requirements. |
| AEC-Q100 qualified operation | Validated for automotive use including thermal cycling, humidity, and vibration - suitable for ASIL-B applications. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN controller, and analog front-end in gasoline/diesel engine management systems exposed to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Dual LDO + supervisor provides primary 5V core rail and secondary 5V peripheral rail with synchronized reset and watchdog supervision. Use Value: 72V input tolerance and 68μA quiescent current ensure reliable operation during cranking (5.5V) and load-dump (65V), minimizing battery drain in sleep mode. | Use Scenario: Supplies power to door module microcontrollers, LIN transceivers, and LED drivers in vehicle body electronics. IC Role / Device Role / Timing Role: Regulates stable 5V/3.3V rails while monitoring battery health via PFI/PFO and enforcing safe firmware restart via WDI/RESET. Use Value: HOLD function enables "key-off" retention of memory and real-time clock without external keep-alive circuitry. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Electric Power Steering (EPS) Control Unit |
Use Scenario: Powers image sensor interface, ISP processor, and SerDes link in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Delivers low-noise 3.3V rail (via adjustable OUT2) with PSRR >69dB @100Hz and monitors system health via windowed watchdog. Use Value: Dual enable inputs allow staggered power-up of sensor and processor domains, reducing inrush current during cold start. | Use Scenario: Supplies torque-sensing MCU, motor gate drivers, and current-sense amplifiers in EPS systems requiring functional safety compliance. IC Role / Device Role / Timing Role: Provides redundant 5V rails with thermal shutdown, overcurrent protection, and fail-safe reset signaling to meet ISO 26262 requirements. Use Value: Output overvoltage protection (105–110% VOUT) prevents damage to downstream gate drivers during regulator fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPTD2+ | Same pinout, identical electrical specs, but includes windowed watchdog (WDS0/WDS1) instead of WD-DIS; supports fast/slow fault detection. | Preferred where firmware hang detection requires both minimum and maximum timeout windows (e.g., ASIL-C diagnostics). | Select MAX6794TPTD2+ when windowed watchdog behavior is required; MAX6793TPTD2+ uses simpler WD-DIS disable logic. |
| TPS7B8750QKVURQ1 | Single-output (5V only), lower IQ (35μA), no HOLD or GATEP; supports 40V max input, not 72V. | Suitable for non-load-dump environments (e.g., infotainment power rails) but lacks reverse-battery protection and dual-rail capability. | Choose TPS7B8750QKVURQ1 only for cost-sensitive, single-rail, low-transient applications - not a drop-in replacement. |
Compared with MAX6794TPTD2+, the MAX6793TPTD2+ simplifies watchdog control using WD-DIS instead of WDS0/WDS1, reducing GPIO usage; versus TPS7B8750QKVURQ1, it offers higher input voltage, dual outputs, and integrated reverse-battery protection - critical for under-hood deployment.
Availability
MAX6793TPTD2+ 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 high-reliability operating conditions.
Supply support for MAX6793TPTD2+ 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 product line targets high-voltage automotive power management, delivering micropower dual/single LDOs with integrated reset, watchdog, and reverse-battery protection - specifically engineered for ECU, BCM, and ADAS subsystems.
FAQ
What output voltages does the MAX6793TPTD2+ support?
The MAX6793TPTD2+ provides a fixed 5V output on OUT1 and a second output (OUT2) that can be configured as either a fixed 5V or adjusted from 1.8V to 11V using the SET1 feedback pin. Its ordering code "TD2" indicates a 5V/5V dual-output configuration with D2 (12.5ms) reset timeout - confirmed in the manufacturer's selector guide and electrical characteristics table.
Does the MAX6793TPTD2+ include reverse-battery protection?
Yes, the MAX6793TPTD2+ integrates a GATEP driver that controls an external p-channel MOSFET to provide reverse-battery protection. This eliminates the need for a series Schottky diode, maintaining low dropout and full 72V transient tolerance - explicitly documented in the Functional Diagrams and Reverse-Battery Protection Circuitry section of the datasheet.
How is the watchdog timer disabled on the MAX6793TPTD2+?
The MAX6793TPTD2+ uses the WD-DIS pin (Pin 10) for watchdog disable: driving WD-DIS low disables the watchdog function entirely. This differs from the MAX6791/MAX6792 windowed variants, which use WDS0/WDS1 logic inputs - a distinction clearly defined in the Pin Description table and Watchdog Timer section of the datasheet.
What is the thermal performance of the MAX6793TPTD2+ in its TQFN package?
The MAX6793TPTD2+ in its 5mm × 5mm TQFN-EP package dissipates up to 2.7W continuously and is rated for −40°C to +125°C operation. Thermal shutdown activates at +165°C with 20°C hysteresis, and the exposed pad (EP) must be soldered to the PCB ground plane to achieve specified thermal resistance - verified in Absolute Maximum Ratings and Typical Operating Characteristics (Figure MAX6791toc07).
Can the MAX6793TPTD2+ be used in AEC-Q100-compliant designs?
While the MAX6793TPTD2+ itself is not individually AEC-Q100 certified, the MAX6795TPLD2/V+ and MAX6795TPSD2/V+ variants are explicitly listed as AEC-Q100 qualified in the datasheet. The MAX6793TPTD2+ shares identical process, design, and qualification flow - and is widely deployed in automotive applications meeting AEC-Q100 requirements through system-level validation.
MAX6793TPTD2+ 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:
- 3.053V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPTD2+ FAQ
1.How can I place an order for MAX6793TPTD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPTD2+ 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 MAX6793TPTD2+ reliable?
The price and inventory of MAX6793TPTD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPTD2+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPTD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPTD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPTD2+?
MAX6793TPTD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPTD2+ 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 MAX6793TPTD2+?
For technical support, including MAX6793TPTD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPTD2+ requirements.
6.How does Aetrix verify that MAX6793TPTD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPTD2+ 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 MAX6793TPTD2+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPTD2+?
All MAX6793TPTD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPTD2+, 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 MAX6793TPTD2+ part is unused and in its original packaging.
Return procedure for MAX6793TPTD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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