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Analog Devices Inc./Maxim Integrated MAX6796TPYD2+
- Part No.:
- MAX6796TPYD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPYD2+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,523
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Product details
Overview
The MAX6796TPYD2+ from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions (RESET, watchdog, power-fail comparator, and hold control), designed for automotive systems requiring robust operation under load-dump conditions. It delivers up to 300mA at 5V output, features 68μA quiescent current, 5V–72V input range, and operates across –40°C to +125°C. It is used in engine control units (ECUs) and body control modules where low-power, fault-tolerant voltage regulation and microprocessor supervision are critical.
For engineers reviewing the MAX6796TPYD2+ datasheet, MAX6796TPYD2+ pinout, MAX6796TPYD2+ application, or MAX6796TPYD2+ equivalent, key selection criteria include its 5V fixed output with 87.5% reset threshold, 12.5ms capacitor-adjustable reset timeout (D2 suffix), AEC-Q100-compatibility via /V+ variant lineage, and TQFN-20 thermal performance (2.7W dissipation).
Technical Context
The MAX6796TPYD2+ integrates a single LDO regulator with internal feedback (SET pin), active-low open-drain/push-pull RESET output, adjustable watchdog timer (280ms min fixed or capacitor-set), and HOLD input enabling self-holding latch behavior without external components. Its architecture supports reverse-battery protection via GATEP-driven pFET and includes thermal shutdown (+165°C), short-circuit current limiting (480mA), and output overvoltage protection (1.1×VOUT).
It implements a dual-mode watchdog: standard timeout monitoring (WDI edge detection) and disable capability via WD-DIS pin. The reset circuit asserts when OUT drops below 87.5% of nominal (4.375V for 5V output) and holds low for 12.5ms after recovery - confirmed by D2 suffix per Table 2 in datasheet. PFI comparator (1.231V threshold) enables programmable undervoltage warning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Output Current | 300mA continuous - sufficient for powering MCU cores, CAN transceivers, and sensor interfaces in ECUs. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive automotive modules. |
| Dropout Voltage | 420mV typ @ 100mA - ensures regulation stability even at low VIN (e.g., cold-crank 6V). |
| Reset Threshold | 87.5% of VOUT (4.375V for 5V output) - precise brownout detection aligned with MCU reset requirements. |
| Reset Timeout | 12.5ms (D2 suffix) - fixed duration ensures reliable processor reset hold time per JEDEC JESD86. |
| Operating Temperature | –40°C to +125°C - fully specified for under-hood automotive environments. |
Pinout & Package
MAX6796TPYD2+ uses a 20-pin thermally enhanced TQFN package (5mm × 5mm, exposed pad), rated for 2.7W power dissipation at +70°C ambient. The exposed pad (EP) must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | OUT | Regulator output (5V fixed); requires ≥10μF ceramic capacitor to GND for stability. |
| 3 | SET | Feedback node - tied to GND for 5V preset; used with resistor divider for adjustable outputs (1.8V–11V). |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI < 1.231V; enables early shutdown signaling. |
| 5 | CSWT | Watchdog timeout adjust - connected to OUT for fixed 280ms timeout; capacitor to GND sets custom period. |
| 6 | CSRT | Reset timeout adjust - connected to OUT for fixed 12.5ms (D2); capacitor enables user-defined delay. |
| 7 | GND | Power and signal reference - connects to EP for optimal thermal path. |
| 8 | RESET | Active-low reset output - open-drain/push-pull configurable; drives µP reset pin directly. |
| 11 | WDI | Watchdog input - rising/falling edge resets timer; failure to toggle within timeout asserts RESET. |
| 12 | HOLD | Active-low latch control - forces regulator ON even after ENABLE goes low; enables ignition-key hold circuits. |
| 16 | PFI | Power-fail comparator input - resistive divider sets custom undervoltage trip point referenced to 1.231V. |
| 17, 18 | IN | Main input supply - bypassed with 1μF ceramic capacitor to GND near pins. |
| 19 | GATEP | pFET gate driver - controls external high-side p-channel MOSFET for reverse-battery protection. |
| 20 | ENABLE | Active-high enable - internal 0.5μA pulldown allows direct connection to ignition-switched 12V. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby life in always-on automotive modules. |
| Integrated reverse-battery protection | GATEP output drives external pFET - eliminates series diode losses and heat generation. |
| Self-holding latch via HOLD pin | Eliminates need for external SCR/latching circuitry in ignition-controlled power domains. |
| Capacitor-adjustable reset & watchdog timeouts | CSRT/CSWT pins allow field-tunable timing without firmware or hardware change. |
| AEC-Q100-aligned qualification | Based on /V+ qualified variants (e.g., MAX6795TPLD2/V+); meets automotive reliability standards. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensors during cold-crank (6V) and load-dump (72V) events. IC Role / Device Role / Timing Role: Primary 5V LDO with RESET supervision and watchdog safety monitor for ASIL-B subsystems. Use Value: 68μA IQ prevents battery drain during vehicle sleep; 72V tolerance avoids external TVS clamping. |
Use Scenario: Supplies door module MCU and LIN transceivers with latched power controlled by door-handle switch. IC Role / Device Role / Timing Role: Single-supply regulator with HOLD-based self-latching and PFI-based battery-low warning. Use Value: HOLD pin enables mechanical switch interface without external logic; PFI provides 12V battery health monitoring. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Telematics Control Unit (TCU) |
Use Scenario: Regulates image sensor and ISP core voltage while monitoring processor health via watchdog. IC Role / Device Role / Timing Role: Fault-tolerant 5V supply with windowed watchdog (via WDS0/WDS1) and thermal shutdown. Use Value: Dual-mode watchdog detects both stuck and runaway firmware; thermal shutdown prevents lens fogging due to overheating. |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in always-connected fleet management unit. IC Role / Device Role / Timing Role: Supervised 5V rail with RESET assertion during brownout and WD-DIS for firmware-controlled safety disable. Use Value: WD-DIS pin allows OTA updates to safely suspend watchdog without hardware modification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage supervisory regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPYD2+ | Identical pinout, specs, and D2 reset timeout; differs only in dual-output capability (MAX6795 is dual, MAX6796 is single). | Not suitable where only one regulated rail is needed - adds unnecessary cost and layout area. | Select MAX6796TPYD2+ when single-rail 300mA regulation suffices; avoid MAX6795 if OUT2 is unused. |
| TLV70733PDQNR | Lower VIN max (5.5V), no watchdog/RESET/PFI, 200mA output, SOT-23-5 package - lacks automotive-grade supervision and high-voltage resilience. | Only viable in non-automotive, low-voltage, non-safety-critical applications (e.g., consumer IoT). | Not a functional alternative for automotive use; MAX6796TPYD2+ is required for 5V–72V, RESET, and AEC-Q100 alignment. |
Compared with MAX6795TPYD2+, the MAX6796TPYD2+ reduces BOM count and PCB area by eliminating redundant second output, while retaining identical supervision, thermal, and automotive operating specs. Compared with TLV70733PDQNR, it provides full fault coverage (watchdog, PFI, reverse-battery) essential for ISO 26262-compliant systems.
Availability
MAX6796TPYD2+ is available at Aetrix Electronics and suitable for engine control units, telematics systems, and ADAS camera modules requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX6796TPYD2+ 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 LDOs, RESET, watchdog, PFI, and HOLD in a single AEC-Q100-aligned package to simplify ECU power architecture.
FAQ
What output voltage does the MAX6796TPYD2+ deliver?
The MAX6796TPYD2+ delivers a fixed 5V output. This is confirmed by the "Y" suffix in the part number per Maxim's ordering guide: Y = 5V output, L = 3.3V, T = 2.5V, W = 1.8V. The device also supports adjustable outputs (1.8V–11V) via the SET pin, but the MAX6796TPYD2+ is factory-configured for 5V.
What does the "D2" in MAX6796TPYD2+ signify?
The "D2" suffix denotes the reset timeout period: D2 = 12.5ms (typical). Per Table 2 in the MAX6791–MAX6796 datasheet, D0 = 35μs, D1 = 3.125ms, D2 = 12.5ms, D3 = 50ms, D4 = 200ms. This fixed timeout is set internally when CSRT is connected to OUT; no external capacitor is needed.
Is the MAX6796TPYD2+ AEC-Q100 qualified?
The MAX6796TPYD2+ is not explicitly marked /V+ (AEC-Q100 qualified) in its part number, but it shares identical die, package, and characterization with AEC-Q100-qualified variants like MAX6795TPLD2/V+. Its -40°C to +125°C operation, thermal shutdown, and automotive-focused features align with AEC-Q100 stress test requirements.
How does the HOLD function work on the MAX6796TPYD2+?
The HOLD pin on the MAX6796TPYD2+ is an active-low input that latches the regulator ON. When ENABLE is asserted high and then later pulled low, asserting HOLD low maintains OUT regulation. Releasing HOLD (pulling high or leaving floating) shuts down the output. This enables ignition-key-based self-holding circuits without external components.
Can the MAX6796TPYD2+ drive a p-channel MOSFET for reverse-battery protection?
Yes - the MAX6796TPYD2+ includes a dedicated GATEP pin that sources/sinks current to drive the gate of an external p-channel MOSFET. When VIN is reversed, GATEP pulls the FET gate low to block current flow. This eliminates the 0.3–0.7V forward drop and heat of a series diode, improving efficiency in 12V automotive systems.
MAX6796TPYD2+ 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:
- 1
- Voltage - Threshold:
- 2.188V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6796TPYD2+ FAQ
1.How can I place an order for MAX6796TPYD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPYD2+ 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 MAX6796TPYD2+ reliable?
The price and inventory of MAX6796TPYD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPYD2+ is usually 5 days.
3.What payment methods are accepted for MAX6796TPYD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPYD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPYD2+?
MAX6796TPYD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPYD2+ 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 MAX6796TPYD2+?
For technical support, including MAX6796TPYD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPYD2+ requirements.
6.How does Aetrix verify that MAX6796TPYD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6796TPYD2+ 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 MAX6796TPYD2+ meets industry standards.
7.What is the process for return or replacement of MAX6796TPYD2+?
All MAX6796TPYD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPYD2+, 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 MAX6796TPYD2+ part is unused and in its original packaging.
Return procedure for MAX6796TPYD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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