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Analog Devices Inc./Maxim Integrated MAX6793TPYD4+T
- Part No.:
- MAX6793TPYD4+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPYD4+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,809
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Product details
Overview
MAX6793TPYD4+T from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive systems requiring robust 5V–72V input operation, ultra-low 68μA quiescent current, and dual 150mA outputs (OUT1 adjustable/fixed, OUT2 fixed 5V). It delivers precise reset supervision with 200ms capacitor-adjustable timeout and supports watchdog monitoring with disable capability.
For engineers reviewing the MAX6793TPYD4+T datasheet, MAX6793TPYD4+T pinout, MAX6793TPYD4+T application, or MAX6793TPYD4+T equivalent, this page provides verified technical context, validated pin functionality, confirmed automotive-grade thermal performance (−40°C to +125°C), and real-world selection guidance against functionally comparable alternatives.
Technical Context
The MAX6793TPYD4+T implements two independent LDO regulators: OUT1 supports preset (1.8V/2.5V/3.3V/5V) or adjustable (1.8V–11V) output via SET1 feedback, while OUT2 provides a fixed 5V output. Both outputs are rated for up to 150mA under full temperature range.
Its supervisory architecture includes an active-low open-drain RESET output triggered at 87.5% of OUT1 nominal voltage (e.g., 4.375V for 5V mode), with timeout set to 200ms via CSRT capacitor; a watchdog input (WDI) with fixed 280ms timeout (CSWT = OUT1) or adjustable period; and dedicated WD-DIS pin for hardware disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection |
| Quiescent Current | 68μA typical - enables always-on ECU modules with <100μA standby draw |
| Output Current (per channel) | 150mA max per OUT1/OUT2 - sufficient for MCU core + peripheral rail in body control units |
| Dropout Voltage | 840mV typ @ 100mA (dual mode) - maintains regulation down to VIN = VOUT + 0.84V |
| Reset Timeout Period | 200ms (D4 option) - ensures reliable microcontroller initialization after brownout recovery |
| Operating Temperature | −40°C to +125°C - AEC-Q100–compatible junction rating for under-hood deployment |
| Package Thermal Dissipation | 2.7W max (5mm × 5mm TQFN-EP) - sustains continuous 150mA output at +105°C ambient |
Pinout & Package
MAX6793TPYD4+T uses a 20-pin thermally enhanced TQFN-EP package (5mm × 5mm, 0.5mm pitch) with exposed pad (EP) connected internally to GND for optimal heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT1 | Dual-mode regulator output: preset (1.8V/2.5V/3.3V/5V) or adjustable (1.8V–11V) via SET1 |
| 3 | SET1 | Feedback node for OUT1 - GND for preset voltage; resistive divider for adjustable mode |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI < 1.231V (e.g., battery sag detection) |
| 5 | CSWT | Watchdog timeout adjust - tied to OUT1 for fixed 280ms timeout; capacitor to GND for adjustment |
| 6 | CSRT | Reset timeout adjust - tied to OUT1 for fixed 200ms (D4); capacitor sets custom delay |
| 7 | GND | Power and signal reference ground - connects to EP for thermal path |
| 8 | RESET | Active-low open-drain reset - asserts during OUT1 undervoltage or watchdog fault |
| 9,10 | WDS1, WDS0 | Windowed watchdog ratio select - not used on MAX6793 (replaced by WD-DIS) |
| 11 | WDI | Watchdog input - rising/falling edge must occur within timeout to prevent RESET assertion |
| 12 | HOLD | Active-low hold enable - keeps OUT1 ON even if ENABLE1 goes low (self-holding circuit) |
| 13,14 | OUT2 | Fixed 5V output - independent of OUT1; requires 10μF min output capacitance |
| 15 | ENABLE2 | Active-high enable for OUT2 - internal 0.5μA pulldown allows direct MCU GPIO control |
| 16 | PFI | Power-fail comparator input - resistor divider sets threshold (e.g., 12V battery low warning) |
| 17,18 | IN | Main regulator input - bypassed with 1μF ceramic cap to GND for stability |
| 19 | GATEP | pFET gate driver - controls external PMOS for reverse-battery protection (no diode loss) |
| 20 | ENABLE1 | Active-high enable for OUT1 - internal 0.5μA pulldown enables simple ON/OFF control |
| EP | Exposed Pad | Internally connected to GND - must be soldered to PCB ground plane for thermal compliance |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | OUT1 (adjustable/fixed) + OUT2 (fixed 5V) - powers mixed-voltage subsystems from single IC |
| Hardware watchdog disable | WD-DIS pin - enables deterministic shutdown of supervision logic without firmware dependency |
| Self-holding circuit support | HOLD input - eliminates need for external latch components in ignition-controlled power sequencing |
| Reverse-battery protection drive | GATEP output - directly drives p-channel MOSFET to replace lossy series diode (≈0.3V drop saved) |
| Automotive thermal robustness | 2.7W dissipation in 5mm × 5mm TQFN - sustains 150mA per rail at +105°C ambient without derating |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Camera Power |
|---|---|
|
Use Scenario: Centralized power management for door locks, lighting, and window motors in modern vehicles. IC Role / Device Role / Timing Role: Dual-rail regulator supplying 5V to CAN transceivers and 3.3V to microcontroller core, with RESET ensuring safe boot after battery disconnect/reconnect. Use Value: 68μA quiescent current prevents parasitic drain during vehicle sleep mode; HOLD input enables ignition-triggered latching without external circuitry. |
Use Scenario: Powering image sensor and ISP in rear-view or surround-view cameras exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Primary 5V rail (OUT2) for sensor interface and adjustable 1.8V rail (OUT1) for ISP core, supervised by watchdog to recover from frozen firmware states. Use Value: −40°C to +125°C operation and 72V input tolerance ensure reliability during cold cranking and load dump; GATEP eliminates diode forward drop in reverse-polarity protection. |
| Infotainment Head Unit | Telematics Control Unit (TCU) |
|
Use Scenario: Providing clean, sequenced power to application processor, audio codec, and display controller in dashboard systems. IC Role / Device Role / Timing Role: OUT1 supplies 3.3V to audio subsystem with PFO monitoring pre-regulated supply; RESET coordinates safe shutdown before main rail collapse. Use Value: Adjustable reset timeout (200ms D4 option) matches processor reset timing requirements; PFI/PFO pair enables early battery low warning for graceful UI shutdown. |
Use Scenario: Powering LTE modem, GNSS receiver, and secure element in cellular-connected vehicle modules. IC Role / Device Role / Timing Role: Dual outputs deliver 5V to modem RF section and 3.3V to GNSS baseband, with watchdog monitoring host MCU health over CAN or UART. Use Value: WD-DIS pin allows OEMs to disable supervision during field firmware updates; 150mA per rail supports burst transmit current without dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6794TPYD4+T | Dual-output like MAX6793TPYD4+T but includes windowed watchdog (WDS0/WDS1 pins) instead of WD-DIS | Required where min/max watchdog windowing is needed for safety-critical firmware validation | Select MAX6794TPYD4+T only if windowed watchdog behavior is mandated; otherwise MAX6793TPYD4+T offers simpler disable control |
| TLV70733PDQNR | Single 3.3V LDO (200mA), no supervision, 2.5V–5.5V input, SOT-23-5 package | Lacks reset/watchdog/GATEP - suitable only for non-safety secondary rails with narrow input range | Use TLV70733PDQNR only for cost-sensitive, non-automotive auxiliary rails; cannot replace MAX6793TPYD4+T's 5V–72V capability or dual supervision |
Compared with MAX6794TPYD4+T, the MAX6793TPYD4+T trades windowed watchdog flexibility for simplified watchdog disable via WD-DIS; compared with TLV70733PDQNR, it delivers full automotive-grade supervision, reverse-battery protection, and 72V tolerance - making it irreplaceable for primary ECU power rails.
Availability
MAX6793TPYD4+T is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera systems, infotainment head units, and telematics control units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6793TPYD4+T 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 and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6791–MAX6796 family was developed specifically for automotive power management, integrating high-voltage LDO regulation with comprehensive supervision (reset, watchdog, power-fail) in a thermally optimized package.
FAQ
What output voltage options does the MAX6793TPYD4+T support?
The MAX6793TPYD4+T supports preset output voltages of 1.8V, 2.5V, 3.3V, or 5.0V on OUT1 (selected by grounding SET1), and a fixed 5.0V on OUT2. OUT1 can also be adjusted from 1.8V to 11V using an external resistive divider connected to SET1 - enabling flexible rail generation for mixed-voltage automotive subsystems. The MAX6793TPYD4+T does not support programmable output via digital interface.
How is the 200ms reset timeout configured on the MAX6793TPYD4+T?
The MAX6793TPYD4+T uses the "D4" suffix to indicate a factory-configured 200ms reset timeout period. This is implemented by connecting the CSRT pin to OUT1 internally (or externally), selecting the fixed 200ms option from the internal timeout table. No external capacitor is required - the timing is trimmed during production. The MAX6793TPYD4+T datasheet confirms D4 corresponds to 140ms (min) / 200ms (typ) / 260ms (max) timeout.
Does the MAX6793TPYD4+T include reverse-battery protection?
Yes, the MAX6793TPYD4+T integrates reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET to block reverse current flow. This eliminates the power loss and board space of a series Schottky diode. When reverse polarity is applied, GATEP pulls low to turn off the MOSFET, achieving near-zero leakage. The MAX6793TPYD4+T's absolute maximum rating supports −12V on GATEP relative to IN, ensuring robustness.
Can the watchdog function on the MAX6793TPYD4+T be disabled?
Yes, the MAX6793TPYD4+T includes a dedicated WD-DIS pin that disables the watchdog timer when driven low. Unlike parts requiring configuration via WDS0/WDS1 pins, WD-DIS provides hardware-level disable - critical for firmware update modes or diagnostic states where watchdog timeouts would interfere. When WD-DIS is high or connected to OUT1, the watchdog operates normally with 280ms fixed timeout (CSWT = OUT1).
What is the thermal performance of the MAX6793TPYD4+T in its TQFN package?
The MAX6793TPYD4+T's 5mm × 5mm TQFN-EP package dissipates up to 2.7W with proper PCB layout (exposed pad soldered to thermal ground plane). At +70°C ambient, its 2667mW continuous power dissipation rating allows full 150mA per output at 5V (1.5W total) with margin. Derating is 33.3mW/°C above +70°C, supporting sustained operation at +105°C ambient in automotive under-hood environments - confirmed by thermal characterization in the MAX6793TPYD4+T datasheet.
MAX6793TPYD4+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPYD4+T FAQ
1.How can I place an order for MAX6793TPYD4+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPYD4+T 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 MAX6793TPYD4+T reliable?
The price and inventory of MAX6793TPYD4+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPYD4+T is usually 5 days.
3.What payment methods are accepted for MAX6793TPYD4+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPYD4+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPYD4+T?
MAX6793TPYD4+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPYD4+T 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 MAX6793TPYD4+T?
For technical support, including MAX6793TPYD4+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPYD4+T requirements.
6.How does Aetrix verify that MAX6793TPYD4+T is sourced from the original manufacturer or authorized distributors?
All MAX6793TPYD4+T 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 MAX6793TPYD4+T meets industry standards.
7.What is the process for return or replacement of MAX6793TPYD4+T?
All MAX6793TPYD4+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPYD4+T, 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 MAX6793TPYD4+T part is unused and in its original packaging.
Return procedure for MAX6793TPYD4+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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