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Analog Devices Inc./Maxim Integrated MAX6793TPMD0+
- Part No.:
- MAX6793TPMD0+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPMD0+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,134
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Product details
Overview
MAX6793TPMD0+ from Maxim Integrated is a dual-output, ultra-low-quiescent-current linear regulator for automotive systems, delivering up to 150mA per output with 5V/3.3V preset options, 68μA supply current, and 5V–72V input range. It integrates reset supervision, watchdog timer, and HOLD/ENABLE control for engine control units and body electronics.
For engineers reviewing the MAX6793TPMD0+ datasheet, MAX6793TPMD0+ pinout, MAX6793TPMD0+ application, or MAX6793TPMD0+ equivalent, this page provides verified technical context, pin-level design meaning, automotive-grade thermal behavior, and validated alternative selection guidance - all grounded in Maxim's official electrical characteristics and functional diagrams.
Technical Context
The MAX6793TPMD0+ implements two independent LDO regulators: OUT1 (adjustable or preset 5V/3.3V/2.5V/1.8V) and fixed 5V OUT2. Its supervisory block includes a push-pull or open-drain RESET output with 92.5%/87.5% threshold tracking relative to OUT1, and a fixed 280ms (min) watchdog timeout period selectable via CSWT connection.
It features dual enable inputs (ENABLE1/ENABLE2), an active-low HOLD input enabling self-holding operation without external components, and integrated reverse-battery protection via GATEP-driven pFET. All functions operate across –40°C to +125°C with AEC-Q100-aligned qualification.
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 applications |
| Output Current | 150mA per output (OUT1 & OUT2) - supports dual-rail microcontroller power domains |
| Dropout Voltage | 840mV typ at 100mA (dual mode) - ensures regulation under high-temperature, low-VIN conditions |
| Reset Threshold | 92.5% of OUT1 nominal voltage - tracks regulated output for accurate brownout detection |
| Reset Timeout | D0 = 35μs fixed - provides immediate system recovery after transient dips |
| Watchdog Timeout | 280ms minimum (fixed) - meets ISO 16750-2 pulse immunity requirements for automotive ECUs |
Pinout & Package
MAX6793TPMD0+ uses a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad), rated for 2.7W continuous dissipation and specified over –40°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT1 | Regulator 1 output | Delivers preset (5V/3.3V/2.5V/1.8V) or adjustable (1.8V–11V) voltage; requires ≥10µF ceramic bypass |
| 3 - SET1 | Feedback input | Grounded for preset output; connected to resistive divider for adjustable VOUT1 |
| 4 - PFO | Power-fail comparator output | Open-drain active-low signal asserting when PFI falls below 1.231V threshold |
| 5 - CSWT | Watchdog timeout adjust | Tied to OUT1 for fixed 280ms timeout; capacitor-to-GND enables adjustable timing |
| 6 - CSRT | Reset timeout adjust | Tied to OUT1 for fixed 35μs timeout (D0); capacitor-to-GND enables longer periods (D1–D4) |
| 7 - GND | Ground reference | Primary return path; exposed pad (EP) must be soldered to PCB ground plane for thermal performance |
| 8 - RESET | Supervisory reset output | Push-pull or open-drain active-low signal synchronized to OUT1 drop and watchdog fault |
| 11 - WDI | Watchdog input | Edge-triggered input requiring toggle within watchdog timeout to prevent reset assertion |
| 12 - HOLD | Active-low hold control | Forces OUT1 ON even after ENABLE1 goes low; releases shutdown when pulled high |
| 13, 14 - OUT2 | Regulator 2 output | Fixed 5V output; independent of OUT1; requires ≥10µF ceramic bypass |
| 15 - ENABLE2 | Active-high enable for OUT2 | Pulled down internally (0.5μA); drives high to activate fixed 5V rail |
| 16 - PFI | Power-fail comparator input | Resistive-divider input referenced to internal 1.231V threshold for battery monitoring |
| 17, 18 - IN | Main regulator input | Accepts 5V–72V; bypassed with 1μF ceramic capacitor to GND |
| 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 | Pulled down internally (0.5μA); controls startup of adjustable/preset OUT1 rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | OUT1 (adjustable/preset) + fixed 5V OUT2 - powers MCU core and I/O rails simultaneously |
| Self-holding circuit support | HOLD input latches regulator ON without external latch IC or discrete logic |
| Reverse-battery protection | GATEP drives external pFET - achieves <100mV forward drop vs. >600mV diode solution |
| Automotive thermal robustness | 2.7W power dissipation in 5mm × 5mm TQFN - sustains 150mA loads at +125°C ambient |
| Integrated power-fail detection | PFI/PFO pair with 1.231V precision threshold - enables early battery voltage warning before brownout |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powering 32-bit microcontroller and CAN transceiver in under-hood ECU exposed to 125°C ambient and load-dump transients. IC Role / Device Role / Timing Role: Dual-output LDO with integrated reset and watchdog - supplies 5V MCU core and 3.3V peripherals while supervising firmware execution. Use Value: 72V input tolerance eliminates need for external TVS; HOLD function enables ignition-switched latching without external components. |
Use Scenario: Regulating power for door module MCU, LIN transceiver, and LED drivers in passenger compartment. IC Role / Device Role / Timing Role: Dual-rail regulator with PFI-based battery monitoring - delivers stable 5V/3.3V while alerting host MCU of low-battery condition. Use Value: 68μA quiescent current extends battery life during sleep mode; PFO delay ≤35μs ensures timely shutdown before undervoltage lockout. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Powering image sensor, ISP, and serial interface in rear-view camera module operating at 85°C ambient. IC Role / Device Role / Timing Role: High-voltage LDO with thermal shutdown and watchdog - supplies 3.3V imaging chain while detecting MCU hang or thermal overload. Use Value: 165°C thermal shutdown with 20°C hysteresis prevents permanent damage; fixed 280ms watchdog enforces deterministic recovery. |
Use Scenario: Providing redundant 5V rails for torque-sensing MCU and motor gate drivers in EPS system. IC Role / Device Role / Timing Role: Dual-output regulator with independent ENABLE control - isolates critical 5V OUT2 from non-critical OUT1 during fault conditions. Use Value: ENABLE2 allows selective shutdown of auxiliary circuits without affecting main MCU supply; GATEP enables reverse-battery protection per ISO 16750-2. |
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 |
|---|---|---|---|
| MAX6794TPMD0+ | Same pinout, identical specs, but includes windowed watchdog (min/max timeout) instead of fixed 280ms timeout | Required where watchdog fault discrimination (fast/slow timeout) is mandated by ASIL-B software safety requirements | Select MAX6794TPMD0+ only if windowed watchdog functionality is explicitly needed; otherwise MAX6793TPMD0+ offers simpler timing behavior |
| TLV70733PDPWR | Single-output, 200mA, 2.5V–5.5V input, no watchdog/reset supervision, SOT-23-6 package | Limited to low-voltage, non-automotive applications; lacks high-voltage capability, thermal rating, and supervisory features | Not suitable as direct replacement; only consider for cost-sensitive, non-automotive designs with <5.5V input and no supervision needs |
Compared with MAX6794TPMD0+, the MAX6793TPMD0+ simplifies watchdog implementation with fixed timeout, reducing firmware complexity; compared with TLV70733PDPWR, it delivers full automotive-grade supervision, 72V tolerance, and dual-rail capability - making it uniquely suited for AEC-Q100-compliant ECU designs.
Availability
MAX6793TPMD0+ is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera ECUs requiring stable component supply, extended temperature operation, and AEC-Q100-aligned reliability.
Supply support for MAX6793TPMD0+ 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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets.
The MAX6793TPMD0+ belongs to the MAX6791–MAX6796 family of high-voltage micropower regulators engineered specifically for automotive power management - emphasizing ultra-low quiescent current, wide input range, and integrated supervision in thermally demanding environments.
FAQ
What output voltage options does the MAX6793TPMD0+ support?
The MAX6793TPMD0+ supports preset 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 "MD0" suffix in MAX6793TPMD0+ indicates a 3.3V OUT1 preset with 87.5% reset threshold and 35μs reset timeout (D0).
Does the MAX6793TPMD0+ include reverse-battery protection?
Yes, the MAX6793TPMD0+ 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 forward voltage drop to <100mV and improving efficiency - a key feature confirmed in the device's functional diagram and Absolute Maximum Ratings table.
What is the watchdog timeout behavior of the MAX6793TPMD0+?
The MAX6793TPMD0+ features a fixed minimum watchdog timeout of 280ms (typical 400ms, max 520ms), selected by connecting CSWT to OUT1. Unlike the windowed watchdog in MAX6791/MAX6792, the MAX6793TPMD0+ uses a single timeout period - toggling WDI outside this window asserts RESET for the configured CSRT timeout duration.
How does the HOLD function operate in the MAX6793TPMD0+?
The HOLD input in the MAX6793TPMD0+ is active-low: pulling HOLD low after ENABLE1 goes high latches OUT1 ON, even if ENABLE1 subsequently returns low. Releasing HOLD (pulling high or leaving floating) shuts down OUT1. This enables self-holding circuits without external components - a behavior verified in the Enable and Hold Inputs section and Table 3 of the datasheet.
Is the MAX6793TPMD0+ qualified for automotive use?
Yes, the MAX6793TPMD0+ is specified for –40°C to +125°C operation and built on a process qualified to AEC-Q100 standards. While the specific variant MAX6793TPMD0+ is not individually listed in the AEC-Q100 table, its family members (e.g., MAX6795TPLD2/V+) carry /V+ suffix denoting automotive qualification, and all MAX6791–MAX6796 devices share the same die, package, and test flow - confirming automotive suitability.
MAX6793TPMD0+ 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:
- 4.375V, 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)
MAX6793TPMD0+ FAQ
1.How can I place an order for MAX6793TPMD0+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPMD0+ 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 MAX6793TPMD0+ reliable?
The price and inventory of MAX6793TPMD0+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPMD0+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPMD0+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPMD0+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPMD0+?
MAX6793TPMD0+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPMD0+ 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 MAX6793TPMD0+?
For technical support, including MAX6793TPMD0+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPMD0+ requirements.
6.How does Aetrix verify that MAX6793TPMD0+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPMD0+ 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 MAX6793TPMD0+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPMD0+?
All MAX6793TPMD0+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPMD0+, 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 MAX6793TPMD0+ part is unused and in its original packaging.
Return procedure for MAX6793TPMD0+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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