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Analog Devices Inc./Maxim Integrated MAX6793TPMD1+
- Part No.:
- MAX6793TPMD1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPMD1+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6793TPMD1+ from Maxim Integrated is a dual-output, ultra-low-quiescent-current linear regulator designed for automotive power management. It operates from 5V to 72V input, delivers up to 150mA per output (OUT1/OUT2), features fixed 5V OUT2 and adjustable/fixed OUT1 (e.g., 3.3V), and integrates RESET, watchdog, HOLD, and power-fail comparator functions. It is used in engine control units (ECUs) and body control modules where load-dump resilience and micropower operation are critical.
For engineers reviewing the MAX6793TPMD1+ datasheet, MAX6793TPMD1+ pinout, MAX6793TPMD1+ application, or MAX6793TPMD1+ equivalent, key selection considerations include its dual 150mA outputs, 68μA quiescent current, -40°C to +125°C AEC-Q100–compatible operation, 5mm × 5mm TQFN-20 package with exposed pad, and integrated supervisory features including capacitor-adjustable reset/watchdog timeout periods.
Technical Context
The MAX6793TPMD1+ implements two independent LDO regulators: OUT1 supports preset (3.3V, per "M" suffix) or adjustable output (1.8V–11V via SET1), while OUT2 is fixed at 5V. Its supervisory block includes an active-low open-drain RESET output with 87.5% reset threshold (relative to OUT1), internally fixed or CSRT-capacitor-adjustable reset timeout (35μs to 200ms), and watchdog monitoring of WDI transitions with fixed 280ms timeout (CSWT = OUT1) or adjustable period.
It features ENABLE1/ENABLE2 for independent output control, HOLD for self-holding latch behavior, PFI/PFO for programmable power-fail detection (1.231V threshold), and GATEP for driving an external pFET to enable reverse-battery protection - all operating across the full -40°C to +125°C junction temperature range with thermal and short-circuit 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 ECU subsystems with minimal battery drain. |
| Output Current (per channel) | 150mA max (OUT1 & OUT2) - sufficient for MCU cores, CAN transceivers, and sensor interfaces. |
| Dropout Voltage | 840mV typ at 100mA (dual mode) - maintains regulation during cold-crank (6V battery) conditions. |
| Reset Threshold | 87.5% of OUT1 nominal voltage - ensures reliable microcontroller reset before brownout. |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive environments. |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation at high ambient. |
Pinout & Package
MAX6793TPMD1+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN package with exposed pad (EP) connected internally to GND. The EP must be soldered to the PCB ground plane for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT1 | Main regulator output: preset 3.3V (per "M" in part number) or adjustable (1.8V–11V); requires ≥10μF output capacitance. |
| 3 | SET1 | Feedback input - tied to GND for 3.3V preset; connected to resistive divider for adjustable output. |
| 4 | PFO | Active-low open-drain power-fail output - asserts when PFI falls below 1.231V threshold. |
| 5 | CSWT | Watchdog timeout adjust - connect to OUT1 for fixed 280ms timeout; capacitor to GND for adjustment. |
| 6 | CSRT | Reset timeout adjust - connect to OUT1 for fixed timeout (D1 = 3.125ms per "D1" suffix); capacitor for tuning. |
| 7 | GND | Analog/digital ground reference - low-impedance return path for all internal circuits. |
| 8 | RESET | Active-low open-drain reset output - asserts when OUT1 drops below reset threshold or watchdog expires. |
| 11 | WDI | Watchdog input - requires edge transition within timeout window to prevent reset assertion. |
| 12 | HOLD | Active-low hold input - latches regulator ON after initial enable, enabling self-holding without external components. |
| 13, 14 | OUT2 | Fixed 5V auxiliary output - supplies secondary loads (e.g., LIN transceivers, EEPROM) independently. |
| 15 | ENABLE2 | Active-high enable for OUT2 - controls 5V rail independently of OUT1. |
| 16 | PFI | Power-fail comparator input - set via resistor divider to trigger PFO at custom supply threshold (e.g., battery undervoltage). |
| 17, 18 | IN | Main input supply - bypass with ≥1μF ceramic capacitor to GND near pins. |
| 19 | GATEP | pFET gate drive - drives external high-side p-channel MOSFET for reverse-battery protection. |
| 20 | ENABLE1 | Active-high enable for OUT1 - internal 0.5μA pulldown allows direct MCU GPIO control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent outputs | OUT1 (3.3V preset) + OUT2 (fixed 5V) - powers heterogeneous subsystems with isolated fault containment. |
| Self-holding circuit support | HOLD input enables ignition-key–driven latching without external logic or capacitors - reduces BOM count. |
| Capacitor-adjustable timing | CSRT and CSWT pins allow precise, board-level tuning of reset and watchdog timeouts - eliminates firmware dependency. |
| Reverse-battery protection interface | GATEP output drives external pFET - replaces lossy series diode, improving efficiency and thermal margin. |
| AEC-Q100–ready operation | Specified from -40°C to +125°C with thermal shutdown (165°C) and hysteresis (20°C) - meets automotive reliability requirements. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU core and CAN FD transceiver in under-hood ECU exposed to 72V load-dump events and -40°C cold cranking. IC Role / Device Role / Timing Role: Dual LDO regulator providing stable 3.3V (MCU I/O) and 5V (CAN PHY) rails with coordinated RESET assertion during brownout. Use Value: 68μA quiescent current prevents battery depletion during extended vehicle sleep; 72V input tolerance avoids need for external TVS clamping. |
Use Scenario: Supplies door module microcontroller, LIN transceiver, and LED drivers in pillar-mounted BCM with variable battery voltage. IC Role / Device Role / Timing Role: Supervisory regulator delivering 3.3V logic rail and 5V analog rail while monitoring battery health via PFI and asserting PFO on undervoltage. Use Value: HOLD function enables wake-on-LIN without persistent MCU enable signal; integrated watchdog prevents firmware lockup during EMI exposure. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Automotive Infotainment Power Sequencing |
Use Scenario: Powers image sensor, ISP, and MIPI serializer in front-facing ADAS camera subjected to thermal cycling and vibration. IC Role / Device Role / Timing Role: High-reliability dual LDO with thermal shutdown and overvoltage protection guarding against sensor short-circuits and hot-swap transients. Use Value: 5mm × 5mm TQFN package fits tight space constraints; 125°C rating supports sealed camera housing operation. |
Use Scenario: Manages power-up sequencing for display processor, audio codec, and touch controller in head-unit with multi-rail requirements. IC Role / Device Role / Timing Role: Enables controlled ramp-up of 3.3V and 5V rails using ENABLE1/ENABLE2, with RESET synchronized to system boot state. Use Value: Adjustable reset timeout (via CSRT) aligns with slowest peripheral's power-on reset requirement - eliminates need for external RC networks. |
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 |
|---|---|---|---|
| MAX6794TPMD2+ | Same dual-output architecture, but offers 12.5ms fixed reset timeout (D2 suffix) vs. 3.125ms (D1); identical 3.3V OUT1, 5V OUT2, and pinout. | Suitable where longer reset hold time is required for slower peripherals (e.g., certain EEPROMs or displays). | Select MAX6794TPMD2+ only if system-level timing analysis confirms need for >3.125ms reset assertion duration. |
| TLV70733PDQNR | Single-output 3.3V LDO (200mA), 2.5V–5.5V input, no watchdog/RESET/PFI - lacks supervisory functions and high-voltage capability. | Limited to low-voltage, non-automotive applications (e.g., portable instrumentation); cannot replace MAX6793TPMD1+ in 12V/24V systems. | Use only as cost-sensitive alternative in non-automotive, low-input-voltage designs where supervisory features are omitted. |
Compared with MAX6794TPMD2+, MAX6793TPMD1+ provides shorter reset assertion (3.125ms vs. 12.5ms), enabling faster system recovery after transient faults; compared with TLV70733PDQNR, it delivers automotive-grade input range, dual outputs, and integrated supervision - making it irreplaceable in safety-critical vehicle ECUs.
Availability
MAX6793TPMD1+ is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and infotainment systems requiring stable component supply across automotive production lifecycles.
Supply support for MAX6793TPMD1+ 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, medical, and automotive applications.
The MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision - combining high-input-voltage LDO regulation, micropower operation, and integrated reset/watchdog/PFI functions in a single AEC-Q100–capable package.
FAQ
What output voltage does MAX6793TPMD1+ deliver on OUT1?
MAX6793TPMD1+ delivers a preset 3.3V on OUT1, indicated by the "M" in the part number per Maxim's ordering guide. This is confirmed in the Electrical Characteristics table (T/S column, VOUT1 = 3.206V to 3.360V at 1mA load). The SET1 pin can be used to configure an adjustable output instead, but the default configuration is 3.3V.
Does MAX6793TPMD1+ support reverse-battery protection?
Yes, MAX6793TPMD1+ supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When reverse polarity is applied, the internal circuitry disables GATEP, turning off the pFET and blocking current flow - eliminating the need for lossy series diodes and preserving system efficiency.
What is the meaning of "D1" in MAX6793TPMD1+?
The "D1" suffix in MAX6793TPMD1+ specifies a fixed 3.125ms reset timeout period, as defined in Table 2 of the datasheet. This value is selected by connecting CSRT to OUT1; no external capacitor is needed. D1 is one of five factory-programmed reset timeout options (D0–D4), ensuring precise, repeatable reset timing without calibration.
Can MAX6793TPMD1+ be used in non-automotive applications?
Yes, MAX6793TPMD1+ is usable in industrial and transportation applications requiring wide-input-voltage regulation (5V–72V), low quiescent current (68μA), and robust supervision. Its -40°C to +125°C rating, thermal protection, and 72V absolute maximum input make it suitable for railway, energy metering, and off-grid power systems - though AEC-Q100 qualification is specific to automotive use cases.
How does the HOLD function operate in MAX6793TPMD1+?
In MAX6793TPMD1+, the HOLD pin implements a self-holding latch: once ENABLE1 is asserted and OUT1 begins regulating, pulling HOLD low "locks" the regulator ON - even if ENABLE1 later goes low. Releasing HOLD (to high-impedance or OUT1) shuts down OUT1. This enables ignition-switch–based power control without external latching circuitry.
MAX6793TPMD1+ 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:
- 2.187ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPMD1+ FAQ
1.How can I place an order for MAX6793TPMD1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPMD1+ 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 MAX6793TPMD1+ reliable?
The price and inventory of MAX6793TPMD1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPMD1+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPMD1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPMD1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPMD1+?
MAX6793TPMD1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPMD1+ 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 MAX6793TPMD1+?
For technical support, including MAX6793TPMD1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPMD1+ requirements.
6.How does Aetrix verify that MAX6793TPMD1+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPMD1+ 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 MAX6793TPMD1+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPMD1+?
All MAX6793TPMD1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPMD1+, 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 MAX6793TPMD1+ part is unused and in its original packaging.
Return procedure for MAX6793TPMD1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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