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Analog Devices Inc./Maxim Integrated MAX6796TPZD2+T
- Part No.:
- MAX6796TPZD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPZD2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,204
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Product details
Overview
MAX6796TPZD2+T from Maxim Integrated is a single-output, ultra-low-quiescent-current linear regulator with integrated supervisory functions (RESET, watchdog, power-fail comparator, and hold control), designed for automotive systems requiring high-voltage tolerance and robust fault management. It operates from 5V to 72V input, delivers up to 300mA output current, features 5V fixed output, 68μA quiescent current, and AEC-Q100-qualified operation from −40°C to +125°C.
For engineers reviewing the MAX6796TPZD2+T datasheet, MAX6796TPZD2+T pinout, MAX6796TPZD2+T application, or MAX6796TPZD2+T equivalent, key selection criteria include its 5V/300mA regulated output under load-dump conditions, fixed 12.5ms reset timeout (D2 suffix), 87.5% reset threshold (Z suffix), watchdog disable capability, and thermally enhanced 20-pin TQFN package with exposed pad.
Technical Context
The MAX6796TPZD2+T implements a high-side pFET-based linear regulation architecture with internal feedback loop referenced to SET pin, enabling precise 5V output regulation across wide input (5–72V) and temperature (−40°C to +125°C) ranges. Its RESET output asserts low when OUT drops below 4.375V (87.5% of 5V) and remains low for exactly 12.5ms after recovery - a factory-trimmed timeout set by D2 coding on CSRT pin.
Supervision logic integrates a fixed 280ms watchdog timeout (CSWT tied to OUT), configurable via WD-DIS pin, and a 1.231V precision PFI comparator driving open-drain PFO. HOLD functionality enables self-holding behavior without external latching components, critical for ignition-controlled automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external protection |
| Output Voltage | Fixed 5.0V ±2.5% - stable supply for microcontrollers and sensors in harsh environments |
| Max Output Current | 300mA - sufficient for powering MCU cores, CAN transceivers, and analog front-ends |
| Quiescent Current | 68μA at VIN = 8V - enables always-on functionality with minimal battery drain |
| Reset Threshold | 4.375V (87.5% of 5V) - triggers reset before MCU brownout during battery sag |
| Reset Timeout | 12.5ms (D2-coded) - ensures reliable processor initialization after voltage recovery |
| Watchdog Timeout | 280ms (fixed, CSWT = OUT) - detects firmware lockup in safety-critical ECUs |
| Operating Temp | −40°C to +125°C - fully specified for under-hood automotive deployment |
Pinout & Package
MAX6796TPZD2+T is housed in a 5mm × 5mm, 20-pin thermally enhanced TQFN-EP package (exposed pad connected to GND), rated for 2.7W continuous power dissipation at +70°C ambient. Pin count and layout match all MAX6791–MAX6796 family members.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulated 5V output; requires ≥10μF ceramic capacitor to GND for stability |
| 3 | SET | Feedback node - grounded for 5V preset mode; connects to resistive divider for adjustable outputs |
| 4 | PFO | Open-drain power-fail output - asserts low when PFI < 1.231V; used for early shutdown warning |
| 5 | CSWT | Watchdog timeout adjust - tied to OUT for fixed 280ms timeout; capacitor sets adjustable period |
| 6 | CSRT | Reset timeout adjust - tied to OUT for fixed 12.5ms (D2); capacitor enables user-defined delay |
| 7 | GND | Analog/digital ground reference and thermal path via exposed pad |
| 8 | RESET | Active-low push-pull reset output - drives µP reset pin directly; no pull-up required |
| 11 | WDI | Watchdog input - rising/falling edge must occur within 280ms to prevent reset assertion |
| 12 | HOLD | Active-low hold control - forces regulator ON even after ENABLE goes low; enables self-hold circuits |
| 16 | PFI | Power-fail comparator input - connect to resistor divider to monitor battery or pre-regulator rail |
| 17,18 | IN | Main input supply - bypass with 1μF ceramic capacitor to GND near pins |
| 19 | GATEP | pFET gate driver - controls external high-side MOSFET for reverse-battery protection |
| 20 | ENABLE | Active-high enable - internally pulled down; driven high by ignition signal to activate regulator |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (68μA) | Enables permanent connection to vehicle battery without excessive parasitic drain |
| 72V Input Tolerance | Eliminates need for external TVS or overvoltage clamping in 24V commercial vehicle systems |
| Integrated HOLD Function | Allows ignition-switched startup followed by autonomous hold - no external latch or MCU GPIO required |
| Factory-Trimmed Reset Timing | D2-coded 12.5ms timeout guarantees consistent reset pulse width across temperature and voltage |
| AEC-Q100 Qualified | Validated for automotive applications including engine control, body electronics, and ADAS modules |
| Reverse-Battery Protection Driver | GATEP output drives pFET to block reverse polarity - replaces lossy series diode with <100mΩ RDS(on) path |
Applications
| Engine Control Unit (ECU) Power Management | Body Control Module (BCM) Supervision |
|---|---|
Use Scenario: Powers 32-bit ARM Cortex-M7 MCU and CAN FD transceiver in diesel ECU exposed to 65V load-dump pulses. IC Role / Device Role / Timing Role: Primary 5V LDO with integrated RESET, watchdog, and HOLD - manages safe boot, runtime fault detection, and ignition-controlled latching. Use Value: 68μA quiescent current prevents battery depletion during 30-day parking; 72V rating avoids external protection; HOLD eliminates need for keep-alive circuitry. | Use Scenario: Supplies 5V to door module microcontroller and LIN transceiver in passenger car BCM operating at −40°C to +105°C. IC Role / Device Role / Timing Role: Single-supply regulator with PFI monitoring and programmable reset timing - provides brownout immunity and orderly shutdown on battery sag. Use Value: 87.5% reset threshold (Z) ensures reset before MCU malfunction; PFI comparator enables predictive low-battery warning via software. |
| ADAS Camera Power Sequencing | Commercial Vehicle Telematics Unit |
Use Scenario: Powers image sensor, ISP, and Ethernet PHY in rear-view camera module mounted near exhaust manifold. IC Role / Device Role / Timing Role: High-temp-stable 5V regulator with thermal shutdown (165°C) and watchdog - ensures fail-safe operation during thermal stress. Use Value: −40°C to +125°C rating supports under-hood placement; 280ms watchdog detects frozen ISP firmware; GATEP enables reverse-polarity protection. | Use Scenario: Supplies 5V to GPS/GNSS receiver, cellular modem, and eMMC in fleet telematics gateway subjected to 24V system with cranking dips. IC Role / Device Role / Timing Role: Load-dump tolerant regulator with dual supervision - RESET ensures clean reboot after voltage collapse; PFO signals impending brownout to save logs. Use Value: 5V/300mA output sustains modem transmit bursts; 12.5ms reset timeout (D2) matches bootloader requirements; AEC-Q100 assures long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator with supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPZD2/V+ | Identical electrical specs and pinout; /V suffix denotes AEC-Q100 qualification with full automotive test report | Required for OEM programs mandating certified automotive-grade documentation and PPAP support | Select MAX6795TPZD2/V+ when formal automotive qualification evidence (test reports, failure-in-time data) is contractually required |
| TLV70750PDQNR | Lower IQ (25μA), narrower 2.5–5.5V input range, no watchdog or HOLD; SOT-23-5 package | Suitable only for post-regulated 5V rails in non-automotive or low-voltage industrial systems | Choose TLV70750PDQNR only for cost-sensitive, low-power, non-automotive applications where supervision features are unnecessary |
Compared with MAX6795TPZD2/V+, the MAX6796TPZD2+T offers identical performance but lacks formal AEC-Q100 certification documentation; versus TLV70750PDQNR, it provides 72V tolerance, integrated watchdog/HOLD, and automotive temperature range - making it irreplaceable in primary battery-fed automotive nodes.
Availability
MAX6796TPZD2+T is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, and ADAS camera systems requiring stable component supply across extended temperature and high-reliability automotive lifecycles.
Supply support for MAX6796TPZD2+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 demanding industrial, automotive, and communications applications.
The MAX6791–MAX6796 product line targets automotive power management with integrated supervision, delivering high-voltage linear regulation, reset generation, watchdog monitoring, and reverse-battery protection in a single compact package.
FAQ
What does the 'ZD2' suffix in MAX6796TPZD2+T indicate?
The 'Z' denotes an 87.5% reset threshold (i.e., 4.375V for 5V output), and 'D2' specifies a factory-trimmed 12.5ms reset timeout period. These are laser-trimmed parameters set during final test - no external components needed to achieve this precise timing and threshold. The MAX6796TPZD2+T uses these fixed values to guarantee deterministic reset behavior across temperature and voltage.
Can MAX6796TPZD2+T be used with adjustable output voltages?
No - MAX6796TPZD2+T is configured for fixed 5V output only. The 'Z' suffix confirms preset 5V operation (not adjustable). To use adjustable output (1.8V–11V), select a variant with 'W', 'V', 'Y', 'Z', 'T', 'S', 'L', or 'M' output code *and* no D-suffix reset code - for example, MAX6796TPWD2+T supports adjustable output with 12.5ms reset. The MAX6796TPZD2+T's SET pin must be grounded per datasheet for 5V mode.
Does MAX6796TPZD2+T require external components for reverse-battery protection?
No - MAX6796TPZD2+T integrates a GATEP driver that controls an external p-channel MOSFET to provide reverse-battery protection. No series diode or additional IC is needed. Connect GATEP to the MOSFET gate, source to IN, and drain to OUT. This achieves <100mΩ conduction path versus >500mΩ for Schottky solutions - minimizing voltage drop and heat generation during normal operation.
How is the watchdog function disabled on MAX6796TPZD2+T?
The watchdog is disabled by driving the WD-DIS pin low. When WD-DIS = low, the watchdog timer is inactive and WDI transitions have no effect. When WD-DIS is high or connected to OUT (5V), the watchdog is enabled and monitors WDI for edges within 280ms. This hardware-disable feature allows safe operation during development or in subsystems where firmware cannot guarantee timely watchdog refreshes.
Is MAX6796TPZD2+T pin-compatible with other MAX679x regulators?
Yes - MAX6796TPZD2+T shares identical 20-pin TQFN-EP footprint and pin mapping with all MAX6791–MAX6796 variants, including MAX6791TPZD2+T and MAX6795TPZD2+T. This enables direct substitution within the same PCB layout. However, functional differences exist: MAX6796TPZD2+T is single-output (300mA), while MAX6791/MAX6792 offer dual outputs (150mA each) and windowed watchdog - verify system-level supervision requirements before replacement.
MAX6796TPZD2+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:
- 2.313V, 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)
MAX6796TPZD2+T FAQ
1.How can I place an order for MAX6796TPZD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPZD2+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 MAX6796TPZD2+T reliable?
The price and inventory of MAX6796TPZD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPZD2+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPZD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPZD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPZD2+T?
MAX6796TPZD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPZD2+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 MAX6796TPZD2+T?
For technical support, including MAX6796TPZD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPZD2+T requirements.
6.How does Aetrix verify that MAX6796TPZD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPZD2+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 MAX6796TPZD2+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPZD2+T?
All MAX6796TPZD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPZD2+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 MAX6796TPZD2+T part is unused and in its original packaging.
Return procedure for MAX6796TPZD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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