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Analog Devices Inc./Maxim Integrated MAX6796TPVD3+T
- Part No.:
- MAX6796TPVD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPVD3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,889
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Product details
Overview
MAX6796TPVD3+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It operates from 5V to 72V input, delivers up to 300mA output current, features 68μA quiescent current, and provides a fixed 5V output with 87.5% reset threshold and 50ms reset timeout - ideal for engine control units under load-dump conditions.
For engineers reviewing the MAX6796TPVD3+T datasheet, MAX6796TPVD3+T pinout, MAX6796TPVD3+T application, or MAX6796TPVD3+T equivalent, key selection criteria include its AEC-Q100-qualified operation from –40°C to +125°C, thermal shutdown at +165°C, adjustable watchdog timeout, hold-input self-latching capability, and reverse-battery protection via GATEP drive.
Technical Context
The MAX6796TPVD3+T implements a single LDO regulator with internal pFET pass element, supporting fixed 5V output (L option) and 87.5% reset threshold relative to VOUT. Its RESET output is push-pull active-low with capacitor-adjustable timeout (D3 = 50ms), and it includes a watchdog timer with fixed 280ms timeout (CSWT tied to OUT) and WD-DIS disable input.
Supervision logic monitors VOUT continuously; RESET asserts when VOUT drops below 4.375V (87.5% of 5V), remains asserted for 50ms after recovery, and is synchronized with watchdog faults. The HOLD input enables self-holding behavior by latching ENABLE low, eliminating need for external latch circuitry in ignition-switched systems.
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 to power microcontrollers, CAN transceivers, and sensor interfaces. |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive automotive modules. |
| Dropout Voltage | 420mV typ. at 100mA - ensures regulation down to VIN = 5.42V for 5V output. |
| Reset Threshold | 4.375V (87.5% of 5V) - precise brownout detection aligned with MCU reset requirements. |
| Reset Timeout | 50ms (D3 option) - meets ISO 16750-2 cold-cranking timing requirements. |
| Operating Temp | –40°C to +125°C - fully specified for under-hood automotive environments. |
| Protection Features | Thermal shutdown (+165°C), short-circuit limit (~440mA), output overvoltage clamp (1.05×VOUT). |
Pinout & Package
MAX6796TPVD3+T is housed in a thermally enhanced 20-pin TQFN package (5mm × 5mm, exposed pad), rated for 2.7W power dissipation and compatible with standard reflow profiles (260°C peak). The exposed pad (EP) must be soldered to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (5V fixed); requires ≥10μF ceramic capacitor to GND for stability. |
| 3 | SET | Feedback input; grounded for 5V preset mode, connected to resistive divider for adjustable output. |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early battery-low warning. |
| 5 | CSWT | Watchdog timeout adjust; tied to OUT for fixed 280ms timeout (D3 implies CSWT = OUT). |
| 6 | CSRT | Reset timeout adjust; tied to OUT for fixed 50ms timeout (D3 code confirms this configuration). |
| 7 | GND | Analog/digital ground reference; connects internally to exposed pad (EP). |
| 8 | RESET | Push-pull active-low reset output; drives MCU reset pin directly without pull-up resistor. |
| 11 | WDI | Watchdog input; requires periodic edge transition within 280ms to prevent reset assertion. |
| 12 | HOLD | Active-low hold input; forces regulator ON even after ENABLE goes low - enables ignition-key latching. |
| 16 | PFI | Power-fail comparator input; sets custom brownout threshold via external resistor divider. |
| 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; pulled down internally (0.5μA), compatible with open-collector MCU outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 68μA enables >10-year battery standby in always-on automotive modules. |
| Integrated reverse-battery protection | GATEP output drives external pFET, eliminating series diode voltage drop and heat loss. |
| Self-holding circuit support | HOLD input eliminates need for external latch or microcontroller firmware intervention during ignition cycling. |
| Adjustable watchdog and reset timeouts | CSWT/CSRT pins accept capacitors for fine-tuned timeout periods beyond factory presets. |
| AEC-Q100 qualified | Qualified per Grade 0 (–40°C to +150°C junction), with full characterization across –40°C to +125°C ambient. |
| Power-fail comparator with programmable threshold | PFI/PFO pair allows configurable early-warning shutdown before critical brownout occurs. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensor interface in gasoline/diesel ECU under wide battery voltage swing (6V–16V) and load-dump events (up to 72V). IC Role / Device Role / Timing Role: Primary 5V LDO regulator with reset supervision and watchdog monitoring of main MCU execution. Use Value: 68μA IQ extends stop-start battery life; 72V input rating avoids external TVS clamping; HOLD input enables ignition-triggered latching without software overhead. | Use Scenario: Supplies power to door module MCU, LIN transceiver, and window motor drivers in 12V vehicle architecture. IC Role / Device Role / Timing Role: Single-supply regulator with integrated PFI monitoring for battery voltage degradation alerts. Use Value: PFO output triggers graceful shutdown before deep discharge; 50ms reset timeout ensures reliable MCU initialization after cold crank. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Telematics Control Unit (TCU) |
Use Scenario: Powers image signal processor (ISP), MIPI CSI-2 serializer, and real-time clock in front-facing ADAS camera exposed to under-hood temperatures. IC Role / Device Role / Timing Role: High-reliability 5V regulator with thermal shutdown and watchdog supervision for safety-critical vision processing. Use Value: +125°C ambient rating and +165°C thermal shutdown ensure operation in sealed enclosures; watchdog prevents silent firmware hangs during vibration-induced glitches. | Use Scenario: Supplies LTE modem, GNSS receiver, and secure element in cellular-connected TCU requiring always-on connectivity and remote firmware updates. IC Role / Device Role / Timing Role: Supervised power source with hold functionality enabling wake-on-LTE while minimizing sleep current. Use Value: HOLD + ENABLE combination allows MCU to enter deep sleep while maintaining regulated 5V rail - reducing system IQ to <100μA total. |
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 |
|---|---|---|---|
| MAX6795TPVD3+T | Identical pinout, specs, and features; differs only in output voltage option (5V vs. MAX6796's 5V) - MAX6795 is dual-mode variant with SET/SET1 flexibility, but TPVD3+T denotes same 5V/L configuration. | No functional difference in 5V fixed-output use case; MAX6795TPVD3+T shares identical reset, watchdog, and hold behavior. | Select MAX6795TPVD3+T only if future design flexibility for adjustable output is required; otherwise MAX6796TPVD3+T is direct fit. |
| TLV70733PDQNR | Lower input range (2.5V–5.5V), no watchdog/reset, no HOLD, 200mA output - lacks automotive-grade supervision and high-voltage capability. | Suitable only for low-voltage post-regulation (e.g., 3.3V from 5V rail), not primary battery-fed regulation. | Not a functional replacement; use only in non-automotive, low-voltage secondary regulation where supervision is handled externally. |
Compared with MAX6795TPVD3+T, MAX6796TPVD3+T offers identical electrical performance and pin compatibility for fixed 5V operation, while TLV70733PDQNR lacks critical automotive supervision features and cannot replace it in battery-input applications.
Availability
MAX6796TPVD3+T is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera ECUs, and telematics control units requiring stable component supply across extended temperature and high-reliability qualification.
Supply support for MAX6796TPVD3+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 product line targets automotive power management with integrated supervision, delivering high-voltage LDO regulation, reset generation, watchdog monitoring, and reverse-battery protection in a single AEC-Q100-qualified device.
FAQ
What output voltage does MAX6796TPVD3+T provide?
MAX6796TPVD3+T provides a fixed 5V output (L option per ordering guide). The "V" in TPVD3+T indicates 5V nominal output; the D3 suffix specifies 87.5% reset threshold and 50ms reset timeout. It does not support adjustable output unless modified externally via SET pin - but the factory configuration is strictly 5V fixed.
Is MAX6796TPVD3+T AEC-Q100 qualified?
Yes, MAX6796TPVD3+T is AEC-Q100 qualified (Grade 0). It is fully specified from –40°C to +125°C ambient, with thermal shutdown at +165°C and tested for reliability under automotive stress conditions including temperature cycling, humidity, and vibration - confirmed in Maxim's official datasheet Rev 3 (10/17).
How does the HOLD function work on MAX6796TPVD3+T?
The HOLD input on MAX6796TPVD3+T is active-low. When pulled low after ENABLE goes high, it latches the regulator ON - keeping OUT active even if ENABLE returns low. Releasing HOLD (to high or open) shuts down the output. This enables ignition-key triggered self-holding without external components, a core feature for automotive power sequencing.
What is the watchdog timeout period for MAX6796TPVD3+T?
MAX6796TPVD3+T uses a fixed watchdog timeout of 280ms (minimum), configured by tying CSWT to OUT (as indicated by D3 in the part number). The watchdog can be disabled via WD-DIS pin, and fast/slow fault detection is not enabled - only basic timeout supervision, unlike MAX6791/MAX6792 windowed variants.
Does MAX6796TPVD3+T support reverse-battery protection?
Yes, MAX6796TPVD3+T integrates reverse-battery protection via the GATEP pin, which drives the gate of an external p-channel MOSFET. When battery polarity is reversed, GATEP holds the pFET off, blocking current flow. No external diode is needed - reducing voltage drop and power loss compared to discrete solutions.
MAX6796TPVD3+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:
- 1
- Voltage - Threshold:
- 1.575V, Adj
- Output:
- Push-Pull, Totem Pole
- 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)
MAX6796TPVD3+T FAQ
1.How can I place an order for MAX6796TPVD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPVD3+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 MAX6796TPVD3+T reliable?
The price and inventory of MAX6796TPVD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPVD3+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPVD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPVD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPVD3+T?
MAX6796TPVD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPVD3+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 MAX6796TPVD3+T?
For technical support, including MAX6796TPVD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPVD3+T requirements.
6.How does Aetrix verify that MAX6796TPVD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPVD3+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 MAX6796TPVD3+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPVD3+T?
All MAX6796TPVD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPVD3+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 MAX6796TPVD3+T part is unused and in its original packaging.
Return procedure for MAX6796TPVD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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