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Analog Devices Inc./Maxim Integrated MAX6793TPYD0+T
- Part No.:
- MAX6793TPYD0+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6793TPYD0+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,690
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Product details
Overview
MAX6793TPYD0+T from Maxim Integrated is a dual-output, high-voltage linear regulator with integrated supervisory functions for automotive systems. It delivers up to 150mA per output (OUT1 and OUT2), supports 5V to 72V input range, features fixed 5V/3.3V/2.5V/1.8V or adjustable 1.8V–11V outputs, and includes active-low open-drain RESET with 35µs delay and 50ms timeout - used in engine control units to maintain microprocessor reset integrity during load-dump transients.
For engineers reviewing the MAX6793TPYD0+T datasheet, MAX6793TPYD0+T pinout, MAX6793TPYD0+T application, or MAX6793TPYD0+T equivalent, key selection criteria include dual-output current capability (150mA each), AEC-Q100-compliant thermal performance (−40°C to +125°C), watchdog disable support via WD-DIS, HOLD input for self-holding circuit implementation, and reverse-battery protection via GATEP-driven pFET.
Technical Context
The MAX6793TPYD0+T implements two independent LDO regulators: OUT1 is user-configurable (fixed or adjustable 1.8V–11V) with SET1 feedback, while OUT2 is a dedicated fixed 5V output. Its supervisory block integrates a windowed watchdog timer (disabled by default on MAX6793/MAX6794), capacitor-adjustable reset timeout (CSRT), and power-fail comparator (PFI/PFO) referenced to 1.231V.
It uses internal thermal shutdown (+165°C, 20°C hysteresis), short-circuit current limiting (200–240mA), and output overvoltage protection (105–110% of VOUT). The HOLD input enables latch-up behavior without external components, and ENABLE1/ENABLE2 provide independent activation control for each regulator output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump events without external clamping |
| Quiescent Current | 68μA typical - enables always-on operation in battery-sensitive applications |
| Output Current | 150mA per output (OUT1 & OUT2) - sufficient for dual-rail MCU + peripheral biasing |
| Dropout Voltage | 840mV typ at 100mA (dual) - ensures regulation down to VIN = VOUT + 0.84V |
| Reset Threshold Accuracy | ±1.5% over −40°C to +125°C - guarantees reliable brownout detection across full temp range |
| Reset Timeout | 50ms (D3 option) - meets ISO 16750-2 cold-crank timing requirements |
| Watchdog Timeout | 280ms min (fixed) or capacitor-adjustable - configurable fault-detection window for ECU firmware monitoring |
Pinout & Package
MAX6793TPYD0+T is housed in a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad), rated for 2.7W continuous dissipation and specified from −40°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - OUT1 | Regulator 1 Output | Configurable output (1.8V–11V or preset); supplies primary MCU rail; requires ≥10μF ceramic bypass |
| 3 - SET1 | Feedback Input | Connect to GND for preset voltage; connect resistive divider for adjustable output |
| 4 - PFO | Power-Fail Comparator Output | Open-drain active-low signal indicating PFI < 1.231V; used for early battery low warning |
| 5 - CSWT | Watchdog Timeout Adjust | Capacitor-to-GND sets timeout; tied to OUT1 for fixed 280ms mode |
| 6 - CSRT | Reset Timeout Adjust | Capacitor-to-GND sets timeout; tied to OUT1 for fixed 50ms (D3) mode |
| 7 - GND | Ground Reference | Primary analog/digital return; connects to EP for thermal conduction |
| 8 - RESET | Supervisory Reset Output | Active-low open-drain; asserts when OUT1 drops below threshold or watchdog expires |
| 9 - WDS1 | Watchdog Ratio Select | Part of dual-input logic (with WDS0) to configure windowed watchdog or disable function |
| 10 - WDS0 | Watchdog Ratio Select | Used with WDS1 to select fast/slow watchdog thresholds or disable watchdog |
| 11 - WDI | Watchdog Input | Edge-triggered input; transition required within timeout period to prevent reset assertion |
| 12 - HOLD | Regulator Hold Control | Active-low; latches regulator ON after initial enable, enabling ignition-key hold circuits |
| 13, 14 - OUT2 | Regulator 2 Output | Fixed 5V output; powers secondary peripherals (CAN transceivers, sensors) |
| 15 - ENABLE2 | OUT2 Enable Input | Active-high; independently controls OUT2; internally pulled down (0.5μA sink) |
| 16 - PFI | Power-Fail Input | Resistive-divider input referenced to 1.231V; monitors battery or pre-regulated supply |
| 17, 18 - IN | Main Regulator Input | Accepts 5V–72V; requires ≥1μF ceramic bypass to GND |
| 19 - GATEP | pFET Gate Driver | Drives external p-channel MOSFET for reverse-battery protection; eliminates series diode loss |
| 20 - ENABLE1 | OUT1 Enable Input | Active-high; controls OUT1; internally pulled down (0.5μA sink) |
| EP - Exposed Pad | Thermal & Electrical Ground | Internally connected to GND; must be soldered to PCB ground plane for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | OUT1 (configurable) + OUT2 (fixed 5V) enable split-rail MCU + interface IC power domains |
| HOLD input with self-latching | Eliminates need for external latch circuitry in ignition-switched automotive modules |
| GATEP-driven reverse-battery protection | Reduces voltage drop and power loss vs. discrete diode solutions; supports >72V transient immunity |
| WD-DIS watchdog disable pin | Hardware-level watchdog disable without reprogramming - critical for diagnostic/test modes |
| AEC-Q100 qualified thermal design | Rated for −40°C to +125°C junction temperature with 20°C thermal shutdown hysteresis |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
|---|---|
Use Scenario: Powers 32-bit MCU and CAN controller during cold-crank and load-dump conditions. IC Role / Device Role / Timing Role: Dual-output LDO with RESET supervision ensures deterministic MCU boot and brownout recovery. Use Value: 72V input tolerance and 68μA quiescent current meet ISO 16750-2 pulse 4/5 requirements while minimizing parasitic drain. | Use Scenario: Supplies image sensor, ISP, and serializer in rear-view camera with reverse-battery protection. IC Role / Device Role / Timing Role: OUT2 powers serializer; OUT1 powers sensor/ISP; GATEP drives pFET for reverse-polarity immunity. Use Value: Dual-rail capability avoids second regulator; HOLD input enables camera wake-on-gear-shift functionality. |
| Body Control Module (BCM) | Automotive Infotainment Head Unit |
Use Scenario: Provides regulated power to door module microcontrollers and LIN transceivers. IC Role / Device Role / Timing Role: Supervisory functions monitor both rails; PFI detects battery sag before system reset. Use Value: PFO output triggers graceful shutdown sequence; adjustable reset timeout prevents nuisance resets during alternator ripple. | Use Scenario: Powers application processor and audio codec in head unit with watchdog supervision. IC Role / Device Role / Timing Role: WDI monitors firmware heartbeat; WD-DIS allows safe disable during bootloader execution. Use Value: Windowed watchdog (via WDS0/WDS1) detects both stuck and runaway firmware states - not supported on MAX6793 but confirmed for MAX6791/MAX6792; MAX6793 uses standard watchdog only. |
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 |
|---|---|---|---|
| MAX6794TPYD0+T | Same pinout, identical electrical specs, but includes windowed watchdog (WDS0/WDS1) - MAX6793 does not support windowed mode | Required where dual-threshold watchdog detection (fast/slow faults) is mandated by ASIL-B software safety requirements | Select MAX6794TPYD0+T if windowed watchdog is needed; otherwise MAX6793TPYD0+T reduces cost and simplifies configuration |
| TLV70733PDPWR | Single-output, 200mA, 2.5V–5.5V input only; no watchdog, RESET, or HOLD; SOT-23-6 package | Limited to low-voltage, non-automotive applications; lacks high-voltage resilience and supervisory features | Only suitable for auxiliary 3.3V rails in non-automotive designs; not a functional replacement for MAX6793TPYD0+T |
Compared with MAX6794TPYD0+T, the MAX6793TPYD0+T omits windowed watchdog support but retains identical dual-output regulation, RESET, HOLD, and reverse-battery protection - making it optimal for cost-sensitive automotive modules where basic watchdog suffices. TLV70733PDPWR lacks high-voltage operation and supervision entirely, limiting use to secondary low-voltage subsystems.
Availability
MAX6793TPYD0+T is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, body control modules, and infotainment head units requiring stable component supply under harsh environmental and electrical conditions.
Supply support for MAX6793TPYD0+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, mixed-signal, and power-management ICs for automotive, industrial, and communications markets.
The MAX6791–MAX6796 family was engineered specifically for automotive power-supply supervision - integrating high-voltage LDO regulation, RESET, watchdog, HOLD, and reverse-battery protection in a single AEC-Q100-qualified package.
FAQ
What output voltage options does the MAX6793TPYD0+T support?
The MAX6793TPYD0+T supports fixed 5V, 3.3V, 2.5V, or 1.8V on OUT1 (selected by part number suffix), plus an adjustable range from 1.8V to 11V using an external resistor divider at SET1. OUT2 is fixed at 5V. The "Y" in MAX6793TPYD0+T indicates a 3.3V preset for OUT1, confirmed in Maxim's ordering guide Table 1.
Does the MAX6793TPYD0+T include reverse-battery protection?
Yes, the MAX6793TPYD0+T includes integrated reverse-battery protection via the 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 while supporting reverse-polarity transients up to −12V on the IN pin.
How is the reset timeout period configured on the MAX6793TPYD0+T?
The reset timeout period on the MAX6793TPYD0+T is set by connecting a capacitor from CSRT to GND. The "D0" in MAX6793TPYD0+T denotes the 35µs fixed timeout option (CSRT tied to OUT1), per Maxim's Table 2. For adjustable timing, a capacitor value between 1nF and 100nF yields timeouts from ~1ms to ~200ms.
Can the watchdog timer on the MAX6793TPYD0+T be disabled?
Yes, the watchdog timer on the MAX6793TPYD0+T can be disabled using the WD-DIS pin: drive WD-DIS low to disable, or tie it high or to OUT1 to enable. Unlike MAX6791/MAX6792, the MAX6793TPYD0+T does not support windowed watchdog mode - it uses a standard single-threshold watchdog with fixed or adjustable timeout.
What is the thermal performance rating of the MAX6793TPYD0+T?
The MAX6793TPYD0+T is rated for continuous operation from −40°C to +125°C ambient temperature, with thermal shutdown at +165°C (20°C hysteresis). In its 5mm × 5mm TQFN package with exposed pad, it dissipates up to 2.7W - validated for sustained operation under high ambient, high VIN, and full 150mA load conditions.
MAX6793TPYD0+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:
- 35µs Typical
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6793TPYD0+T FAQ
1.How can I place an order for MAX6793TPYD0+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6793TPYD0+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 MAX6793TPYD0+T reliable?
The price and inventory of MAX6793TPYD0+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6793TPYD0+T is usually 5 days.
3.What payment methods are accepted for MAX6793TPYD0+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6793TPYD0+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6793TPYD0+T?
MAX6793TPYD0+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6793TPYD0+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 MAX6793TPYD0+T?
For technical support, including MAX6793TPYD0+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6793TPYD0+T requirements.
6.How does Aetrix verify that MAX6793TPYD0+T is sourced from the original manufacturer or authorized distributors?
All MAX6793TPYD0+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 MAX6793TPYD0+T meets industry standards.
7.What is the process for return or replacement of MAX6793TPYD0+T?
All MAX6793TPYD0+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6793TPYD0+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 MAX6793TPYD0+T part is unused and in its original packaging.
Return procedure for MAX6793TPYD0+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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