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Analog Devices Inc./Maxim Integrated MAX6793TPYD3+
- Part No.:
- MAX6793TPYD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPYD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6793TPYD3+ 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 (OUT1 and OUT2), supports 5V to 72V input range, features 68μA quiescent current, and includes active-low RESET with 50ms fixed timeout (D3). It operates in -40°C to +125°C and is used in engine control units and body electronics where load-dump resilience and low-power supervision are critical.
For engineers reviewing the MAX6793TPYD3+ datasheet, MAX6793TPYD3+ pinout, MAX6793TPYD3+ application, or MAX6793TPYD3+ equivalent, key selection considerations include its dual 5V/5V fixed output configuration, HOLD-enabled self-holding circuitry, watchdog disable capability via WD-DIS, and AEC-Q100-compliant thermal robustness in the 20-pin TQFN package.
Technical Context
The MAX6793TPYD3+ implements two independent LDO regulators: OUT1 is adjustable (1.8V–11V) or preset (5V/3.3V/2.5V/1.8V), while OUT2 is fixed at 5V. Its supervisory block integrates a reset generator with 92.5% reset threshold relative to OUT1 and a capacitor-adjustable or fixed 50ms reset timeout (CSRT = D3).
It features a standard watchdog timer (not windowed) with 280ms minimum timeout, disableable via WD-DIS pin, and includes reverse-battery protection drive (GATEP), power-fail comparator (PFI/PFO), and HOLD-based latching control - all operating across the full -40°C to +125°C automotive temperature range.
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 systems |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient for MCU core + peripheral rail in compact ECUs |
| Reset Timeout | 50ms (D3 option) - ensures reliable microprocessor initialization after brownout recovery |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments |
| Reset Threshold | 92.5% of OUT1 nominal voltage - provides accurate undervoltage detection without external resistors |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation at high ambient |
Pinout & Package
The MAX6793TPYD3+ is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN package with exposed pad (EP) connected to GND for optimal heat transfer. Pin count and layout match the MAX6791–MAX6796 family; no lead-free or RoHS exemptions apply.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT1 | Regulator 1 Output | Fixed 5V or adjustable (1.8V–11V); supplies up to 150mA; requires ≥10μF output capacitor |
| 3 - SET1 | Feedback Input | Grounded for preset output; connected to resistor divider for adjustable VOUT1 |
| 4 - PFO | Power-Fail Output | Open-drain, active-low signal asserting when PFI < 1.231V - enables early shutdown warning |
| 5 - CSWT | Watchdog Timeout Adjust | Connected to OUT1 for fixed 280ms timeout; capacitor-to-GND enables adjustment |
| 6 - CSRT | Reset Timeout Adjust | Connected to OUT1 for fixed 50ms (D3) timeout; capacitor-to-GND enables other durations |
| 7 - GND | Ground Reference | Primary analog/digital return; EP must be soldered to PCB ground plane |
| 8 - RESET | Supervisory Reset Output | Active-low, push-pull or open-drain; asserts during OUT1 undervoltage or watchdog fault |
| 9 - WDS1 | Watchdog Logic Select | Unused in MAX6793 (not windowed); tied high or low per design - no functional impact |
| 10 - WDS0 | Watchdog Logic Select | Unused in MAX6793 (not windowed); tied high or low per design - no functional impact |
| 11 - WDI | Watchdog Input | Edge-triggered; reset asserted if no transition occurs within watchdog timeout period |
| 12 - HOLD | Regulator Hold Control | Active-low; forces OUT1 ON even after ENABLE1 goes low - enables self-holding without external latch |
| 13, 14 - OUT2 | Regulator 2 Output | Fixed 5V output; supplies up to 150mA; requires ≥10μF output capacitor |
| 15 - ENABLE2 | Enable Input 2 | Active-high; controls OUT2 independently; internally pulled down (0.5μA) |
| 16 - PFI | Power-Fail Input | Non-inverting comparator input; threshold set by external resistor divider referenced to 1.231V |
| 17, 18 - IN | Main Input Supply | 5V–72V input; bypassed 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 | Enable Input 1 | Active-high; controls OUT1; internally pulled down (0.5μA); works with HOLD for ignition sequencing |
| - WD-DIS | Watchdog Disable | Active-low pin; drives low to disable watchdog - simplifies debug and safe boot modes |
Key Features
| Feature | Design Value |
|---|---|
| Dual 5V/5V fixed outputs | OUT1 and OUT2 both deliver regulated 5V - powers dual-rail MCUs or separate logic/peripheral domains |
| HOLD-enabled latching | Eliminates need for external flip-flop or microcontroller GPIO to sustain regulator ON state after ignition release |
| WD-DIS watchdog disable | Hardware-disable pin allows deterministic boot without watchdog timing constraints - critical for firmware validation |
| GATEP reverse-battery drive | Direct gate control of external pFET replaces lossy series diode - improves efficiency and thermal margin |
| AEC-Q100 qualified operation | Validated for automotive use including temperature cycling, ESD, and long-term reliability - no derating required |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powering 32-bit MCU and CAN transceiver in gasoline/diesel engine management system exposed to 72V load-dump events. IC Role / Device Role / Timing Role: Dual 5V regulator supplies core logic (OUT1) and communication interface (OUT2); RESET ensures deterministic MCU restart after brownout. Use Value: 68μA quiescent current prevents battery drain during extended parking; HOLD sustains power through ignition cycle transitions. | Use Scenario: Supplying door module MCU, LIN transceiver, and LED drivers in harsh cabin environment with wide temperature swings. IC Role / Device Role / Timing Role: Provides stable 5V rails with integrated power-fail warning (PFI/PFO) for graceful shutdown before battery disconnect. Use Value: GATEP-driven reverse-battery protection avoids diode drop and heat - enabling compact, sealed module design. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Electric Power Steering (EPS) Controller |
Use Scenario: Powering image sensor and ISP in front-facing ADAS camera subjected to vibration, thermal stress, and EMI. IC Role / Device Role / Timing Role: Dual 5V outputs decouple noise-sensitive imaging path (OUT1) from motor driver interface (OUT2); RESET guarantees clean boot after power interruption. Use Value: 5mm × 5mm TQFN with exposed pad maintains junction temp <125°C at 150mA load - avoids thermal throttling. | Use Scenario: Regulating MCU and gate driver supply in EPS controller requiring fail-safe behavior and ASIL-B compliance support. IC Role / Device Role / Timing Role: Supervisory functions (RESET, watchdog, PFO) feed into safety monitor; HOLD enables controlled power-down sequence. Use Value: WD-DIS pin allows temporary watchdog disable during firmware update - preventing spurious resets during critical flash operations. |
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 |
|---|---|---|---|
| MAX6794TPYD3+ | Same pinout, identical electrical specs, but includes windowed watchdog (WDS0/WDS1 pins active) | Required only if windowed watchdog timing (min/max fault detection) is needed for functional safety monitoring | Select MAX6794TPYD3+ only when ISO 26262 ASIL-C/D diagnostics mandate windowed watchdog behavior |
| TLV70733PDQNR | Single 3.3V output, 200mA, 5.5V max input, no supervision - lacks RESET, watchdog, HOLD, or high-voltage capability | Suitable only for low-voltage, non-automotive, non-safety-critical applications with simple enable control | Not a functional substitute; only consider for cost-sensitive consumer designs with VIN < 6V and no supervision needs |
Compared with MAX6794TPYD3+, the MAX6793TPYD3+ omits windowed watchdog logic - reducing complexity and test overhead where basic timeout supervision suffices. Unlike TLV70733PDQNR, it supports 72V input, dual outputs, and full automotive supervision - making it irreplaceable in demanding vehicle subsystems.
Availability
MAX6793TPYD3+ is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and electric power steering controllers requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6793TPYD3+ 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-reliability automotive power systems, delivering micropower supervision and high-input-voltage regulation in thermally robust packages for under-hood and chassis-mounted electronics.
FAQ
What output voltage options does the MAX6793TPYD3+ support?
The MAX6793TPYD3+ supports fixed 5V on both OUT1 and OUT2 outputs. The "Y" in the part number denotes the 5V/5V configuration. OUT1 can alternatively be configured as adjustable (1.8V–11V) using an external resistor divider on SET1, but the factory-programmed version MAX6793TPYD3+ ships with both outputs preset to 5V.
Does the MAX6793TPYD3+ include watchdog functionality, and how is it disabled?
Yes, the MAX6793TPYD3+ includes a standard (non-windowed) watchdog timer with 280ms minimum timeout. It is disabled by driving the WD-DIS pin low. This hardware disable method allows deterministic boot sequences and firmware updates without risk of spurious resets - a key requirement for automotive software validation.
What is the purpose of the HOLD pin on the MAX6793TPYD3+?
The HOLD pin on the MAX6793TPYD3+ is an active-low input that enables self-holding behavior: once OUT1 is enabled via ENABLE1, pulling HOLD low sustains regulation even if ENABLE1 returns low. Releasing HOLD shuts down OUT1. This eliminates external latching components in ignition-switched automotive subsystems.
Can the MAX6793TPYD3+ withstand automotive load-dump conditions?
Yes, the MAX6793TPYD3+ is rated for 5V to 72V input operation and is specifically designed to survive ISO 7637-2 Load Dump pulses (up to 60V for 400ms) without external protection. Its internal architecture and 72V absolute maximum rating on the IN pin ensure robustness in 12V and 24V vehicle electrical systems.
Is the MAX6793TPYD3+ qualified for automotive use?
Yes, the MAX6793TPYD3+ is AEC-Q100 qualified (Grade 0: -40°C to +125°C) and specified across the full temperature range. It undergoes rigorous testing for thermal cycling, humidity, ESD, and long-term reliability - meeting requirements for engine bay, transmission, and chassis-mounted automotive electronics.
MAX6793TPYD3+ 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:
- 2.188V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 35ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPYD3+ FAQ
1.How can I place an order for MAX6793TPYD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPYD3+ 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 MAX6793TPYD3+ reliable?
The price and inventory of MAX6793TPYD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPYD3+ is usually 5 days.
3.What payment methods are accepted for MAX6793TPYD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPYD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPYD3+?
MAX6793TPYD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPYD3+ 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 MAX6793TPYD3+?
For technical support, including MAX6793TPYD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPYD3+ requirements.
6.How does Aetrix verify that MAX6793TPYD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6793TPYD3+ 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 MAX6793TPYD3+ meets industry standards.
7.What is the process for return or replacement of MAX6793TPYD3+?
All MAX6793TPYD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPYD3+, 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 MAX6793TPYD3+ part is unused and in its original packaging.
Return procedure for MAX6793TPYD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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