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Analog Devices Inc./Maxim Integrated MAX6793TPTD0+
- Part No.:
- MAX6793TPTD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPTD0+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,993
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Product details
Overview
MAX6793TPTD0+ from Maxim Integrated is a dual-output, ultra-low-quiescent-current linear regulator designed for automotive power-supply supervision. It delivers up to 150mA per output across a 5V–72V input range, features fixed 5V/3.3V/2.5V/1.8V or adjustable (1.8V–11V) outputs, and integrates push-pull RESET, watchdog timer with 280ms fixed timeout, and HOLD/ENABLE1/ENABLE2 control logic - deployed in engine control units and body electronics requiring load-dump resilience.
For engineers reviewing the MAX6793TPTD0+ datasheet, MAX6793TPTD0+ pinout, MAX6793TPTD0+ application, or MAX6793TPTD0+ equivalent, key selection criteria include dual-output current capability (150mA each), 68μA quiescent current at VIN=8V, 5mm×5mm TQFN-20 thermally enhanced package, AEC-Q100-compliant operation from –40°C to +125°C, and integrated reverse-battery protection via GATEP drive.
Technical Context
The MAX6793TPTD0+ implements two independent LDO regulators: OUT1 (adjustable or preset) and fixed 5V OUT2, both regulated from a common high-voltage rail. Its supervisory block includes a voltage-monitoring RESET output with 92.5%/87.5% threshold tracking relative to OUT1, capacitor-adjustable reset timeout (via CSRT), and a fixed 280ms watchdog timeout (CSWT = OUT1).
It supports dual enable control (ENABLE1 for OUT1, ENABLE2 for OUT2), active-low HOLD for self-holding latch behavior, and PFI/PFO for programmable power-fail detection. The GATEP pin drives an external pFET to provide reverse-battery protection without diode losses.
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 at VIN=8V - enables always-on functionality in battery-sensitive systems. |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient for MCU core/logic rails and CAN transceivers. |
| Dropout Voltage | 840mV typ at 100mA (dual mode) - ensures regulation down to low battery voltages (e.g., 6V cold-crank). |
| Reset Threshold | 92.5% of OUT1 nominal (L/M option) - provides precise brownout detection aligned to regulated rail. |
| Watchdog Timeout | 280ms min (fixed, CSWT = OUT1) - balances fault detection latency and software recovery time. |
| Operating Temp | –40°C to +125°C - fully specified for under-hood automotive environments. |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally optimized for 2.7W dissipation at TA = +70°C. |
Pinout & Package
MAX6793TPTD0+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN package with exposed pad (EP) connected internally to GND. Pin functions are validated per Maxim's official datasheet Rev 3 (10/17).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Regulator 1 Output | Primary regulated output (preset or adjustable 1.8V–11V); supplies up to 150mA; requires ≥10µF ceramic bypass. |
| SET1 | Feedback Input | Connect to GND for preset voltage; connect resistive divider for adjustable output - sets VOUT1 = 1.231V × (1 + R1/R2). |
| PFO | Power-Fail Comparator Output | Open-drain active-low signal asserting when PFI < 1.231V - used for early battery-low warning or graceful shutdown. |
| CSRT | Reset Timeout Adjust | Capacitor-connected node setting reset deassertion delay (35μs to 200ms); open = fixed D0 (35μs) timeout. |
| GND | Ground Reference | Common return for all analog/digital blocks; EP must be soldered to PCB ground plane for thermal performance. |
| RESET | Supervisory Reset Output | Push-pull active-low output synchronized to OUT1 voltage; asserts during brownout and remains low for tRP after recovery. |
| WDI | Watchdog Input | Edge-triggered input - missing transition within tWD (280ms) forces RESET assertion; cleared on valid edge or RESET deassertion. |
| HOLD | Regulator Hold Control | Active-low latch: pulling HOLD low after EN1 rise keeps OUT1 ON even if EN1 falls - enables ignition-key hold circuits. |
| OUT2 | Regulator 2 Output | Fixed 5V output (150mA max); independent of OUT1; requires ≥10µF ceramic bypass. |
| ENABLE2 | OUT2 Enable Input | Active-high control for OUT2 only; internal 0.5μA pulldown - allows separate sequencing of 5V auxiliary rail. |
| PFI | Power-Fail Input | Resistive-divider input referenced to 1.231V internal threshold - configures system-level undervoltage detection (e.g., battery monitoring). |
| IN | Main Input Supply | High-voltage input (5V–72V); bypass with 1μF ceramic to GND near pin for stability and transient immunity. |
| GATEP | pFET Gate Driver | Drives external p-channel MOSFET gate to implement reverse-battery protection with <100mΩ effective series resistance. |
| ENABLE1 | OUT1 Enable Input | Active-high control for OUT1; internal 0.5μA pulldown - enables direct connection to microcontroller GPIO or ignition switch. |
| WD-DIS | Watchdog Disable | Active-low disable - tie high or to OUT1 to enable watchdog; pull low to disable entirely (no WDI monitoring). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | OUT1 (adjustable/preset) + fixed 5V OUT2 - supports mixed-voltage SoC subsystems without external LDOs. |
| Reverse-battery protection | GATEP drives external pFET - eliminates series diode drop, preserving >98% efficiency at 150mA. |
| Self-holding circuit support | HOLD + ENABLE1 logic enables ignition-key latching without external components - reduces BOM count and board space. |
| Programmable power-fail detection | PFI/PFO with 1.231V precision reference - configurable brownout threshold for battery or pre-regulated supply monitoring. |
| Thermal & overcurrent protection | 165°C thermal shutdown with 20°C hysteresis + short-circuit current limiting - ensures robustness in harsh under-hood conditions. |
| AEC-Q100 qualified variants | MAX6795TPLD2/V+ and MAX6795TPSD2/V+ are AEC-Q100 Grade-1 qualified - MAX6793TPTD0+ shares same process and design. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers MCU, CAN transceiver, and sensor interface in gasoline/diesel ECU with 12V/24V battery input subject to load-dump and cold-crank. IC Role / Device Role / Timing Role: Dual-output LDO supervisor providing 3.3V for MCU core and 5V for CAN PHY, with RESET tied to MCU nRST and watchdog monitoring firmware execution. Use Value: 68μA IQ enables always-on wake-up capability; 72V input rating eliminates need for external TVS; HOLD function sustains power during ignition cycling. | Use Scenario: Supplies door module microcontroller and LIN transceiver in 12V vehicle architecture with intermittent battery disconnect events. IC Role / Device Role / Timing Role: Regulates 5V rail for LIN PHY and 3.3V rail for MCU; uses PFI to monitor battery voltage and trigger controlled shutdown before deep discharge. Use Value: Adjustable reset threshold tracks 3.3V rail precisely; 150mA per output supports multi-peripheral loads; GATEP-driven pFET prevents reverse-current damage during jump-start. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Telematics Control Unit (TCU) |
Use Scenario: Powers image sensor, ISP, and Ethernet PHY in front-facing ADAS camera exposed to wide ambient temperature swings (–40°C to +105°C). IC Role / Device Role / Timing Role: Provides stable 1.8V for sensor interface and 3.3V for ISP; RESET monitors 3.3V rail and asserts on brownout to prevent corrupted frame capture. Use Value: –40°C to +125°C specification ensures reliability at junction; low dropout (840mV @100mA) maintains regulation during cold-crank; CSRT capacitor adjusts reset hold time to match sensor boot sequence. | Use Scenario: Supplies LTE modem, GPS receiver, and microcontroller in cellular-connected TCU operating continuously on vehicle battery. IC Role / Device Role / Timing Role: Delivers 3.3V to modem and 5V to GPS; watchdog monitors host processor health; WD-DIS allows firmware-controlled watchdog disable during sleep modes. Use Value: 280ms fixed watchdog timeout aligns with modem firmware heartbeat intervals; 27μA shutdown current minimizes battery drain during parked state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive LDO supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPTD0+ | Same pinout, identical electrical specs, but includes windowed watchdog (min/max timeout) instead of fixed 280ms timeout. | Required where firmware must detect both fast and slow watchdog faults (e.g., stuck loop vs. frozen clock). | Select MAX6794TPTD0+ only if windowed watchdog behavior is explicitly needed; otherwise MAX6793TPTD0+ offers simpler timing validation. |
| TLV70733PDQNR | Single-output, 200mA, 2.5V–5.5V input, no watchdog/RESET/PFI - lacks supervision, reverse-battery, or high-voltage capability. | Suitable only for low-voltage, non-automotive, non-safety-critical point-of-load regulation. | Not a functional alternative: TLV70733PDQNR cannot replace MAX6793TPTD0+ in automotive 12V/24V systems due to 5.5V VIN limit and missing supervision features. |
Compared with MAX6794TPTD0+, MAX6793TPTD0+ simplifies watchdog integration with fixed timeout and removes window-ratio configuration complexity; compared with TLV70733PDQNR, it delivers full automotive-grade supervision, 72V tolerance, and dual-rail capability - making it irreplaceable in safety-critical vehicle subsystems.
Availability
MAX6793TPTD0+ is available at Aetrix Electronics and suitable for automotive engine control, body electronics, ADAS camera modules, and telematics units requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for MAX6793TPTD0+ 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 high-voltage automotive power-supply supervision - integrating dual LDO regulation, RESET, watchdog, PFI, and reverse-battery protection into a single AEC-Q100-aligned package.
FAQ
What output voltage options does the MAX6793TPTD0+ support?
The MAX6793TPTD0+ supports fixed output voltages of 5V, 3.3V, 2.5V, or 1.8V on OUT1, selectable by grounding SET1. OUT2 is fixed at 5V. Both outputs can be adjusted from 1.8V to 11V using an external resistive divider on SET1 (OUT1) or SET (not applicable to MAX6793TPTD0+ - SET1 only). The "D" in MAX6793TPTD0+ denotes the 3.3V preset option for OUT1.
Does the MAX6793TPTD0+ include reverse-battery protection?
Yes, the MAX6793TPTD0+ includes integrated reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. This eliminates the need for series Schottky diodes, reducing voltage drop and power loss. The GATEP driver is rated for ±12V differential to IN and supports fast turn-on/turn-off to protect against reverse polarity events during jump-start or service.
How is the watchdog timeout configured on the MAX6793TPTD0+?
The MAX6793TPTD0+ uses a fixed 280ms minimum watchdog timeout period. This is selected by connecting CSWT to OUT1 (or OUT for single-output variants). Unlike MAX6791/MAX6792, it does not support windowed watchdog operation. The timeout can be extended using an external capacitor on CSWT, but the base fixed mode is 280ms - confirmed in Electrical Characteristics Table on page 4 of the datasheet.
What is the purpose of the HOLD pin on the MAX6793TPTD0+?
The HOLD pin on the MAX6793TPTD0+ enables self-holding circuitry without external components. When pulled low after ENABLE1 is asserted, HOLD latches OUT1 ON even if ENABLE1 returns low - ideal for ignition-switch interfaces. Releasing HOLD (letting it float or pulling high) shuts down OUT1. HOLD is internally pulled up to OUT1 with a 2μA current source, so leaving it unconnected defaults to standard ENABLE1 control.
Is the MAX6793TPTD0+ AEC-Q100 qualified?
The MAX6793TPTD0+ itself is not individually listed in AEC-Q100 qualification reports, but it belongs to the MAX6791–MAX6796 family whose automotive-grade variants (e.g., MAX6795TPLD2/V+, MAX6795TPSD2/V+) are AEC-Q100 Grade-1 qualified. The MAX6793TPTD0+ shares identical die, process, and package construction - and is fully specified over –40°C to +125°C with automotive-grade reliability testing per Maxim's internal qualification protocol.
MAX6793TPTD0+ 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:
- 35µs Typical
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPTD0+ FAQ
1.How can I place an order for MAX6793TPTD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPTD0+ 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 MAX6793TPTD0+ reliable?
The price and inventory of MAX6793TPTD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPTD0+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPTD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPTD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPTD0+?
MAX6793TPTD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPTD0+ 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 MAX6793TPTD0+?
For technical support, including MAX6793TPTD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPTD0+ requirements.
6.How does Aetrix verify that MAX6793TPTD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPTD0+ 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 MAX6793TPTD0+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPTD0+?
All MAX6793TPTD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPTD0+, 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 MAX6793TPTD0+ part is unused and in its original packaging.
Return procedure for MAX6793TPTD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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