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Analog Devices Inc./Maxim Integrated MAX6796TPZD4+T
- Part No.:
- MAX6796TPZD4+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPZD4+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,124
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Product details
Overview
MAX6796TPZD4+T from Maxim Integrated is a single-output, high-voltage linear regulator with integrated supervisory functions, designed for automotive power management. It delivers up to 300mA at 5V output (±2.5% over -40°C to +125°C), operates from 5V to 72V input, consumes only 68μA quiescent current, and features a capacitor-adjustable 200ms reset timeout (D4 option) - enabling robust cold-crank and load-dump resilience in engine control units.
For engineers reviewing the MAX6796TPZD4+T datasheet, MAX6796TPZD4+T pinout, MAX6796TPZD4+T application, or MAX6796TPZD4+T equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, dual-mode watchdog disable capability, HOLD-enabled self-holding circuit implementation, and guaranteed operation across -40°C to +125°C ambient.
Technical Context
The MAX6796TPZD4+T implements a single LDO regulator with internal pFET pass element and precision bandgap reference, supporting fixed 5V output (L-coded variant) with 92.5% reset threshold (VOUT-dependent). Its supervisory block integrates a reset generator with programmable timeout via CSRT pin and a fixed 280ms minimum watchdog timer (CSWT = OUT), configurable to fast/slow fault detection only on MAX6791/MAX6792 - not applicable to this part.
It features ENABLE and HOLD inputs with internal 0.5μA pulldown (ENABLE) and 2μA pullup (HOLD to OUT), enabling ignition-controlled latching behavior without external components. Thermal shutdown triggers at +165°C with 20°C hysteresis, and output overvoltage protection activates at 105–110% of nominal VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients up to +72V without damage or dropout |
| Output Current | 300mA continuous - sufficient to power microcontrollers, CAN transceivers, and sensor interfaces in ECUs |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive applications like telematics modules |
| Dropout Voltage | 420mV typ. at 100mA - ensures regulation down to VIN = 5.42V when VOUT = 5V, critical during cold-crank |
| Reset Timeout | 200ms (D4 code) - fixed timeout period after VOUT recovers, preventing premature MCU boot before rail stabilization |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments per AEC-Q100 Grade 0 |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced layout supports 2.7W dissipation at TA = +70°C |
Pinout & Package
MAX6796TPZD4+T is housed in a 20-pin, 5mm × 5mm thermally enhanced TQFN package with exposed pad (EP) connected internally to GND. The EP must be soldered to PCB ground plane for thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output (5V fixed); requires ≥10μF ceramic capacitor to GND for stability and transient response |
| 3 | SET | Feedback input; tied to GND for 5V preset mode (L-code), or used with external resistor divider for adjustable outputs |
| 4 | PFO | Open-drain power-fail output; asserts low when PFI < 1.231V - used for early battery-low warning |
| 5 | CSWT | Watchdog timeout adjust; connected to OUT for fixed 280ms timeout (not adjustable on MAX6796) |
| 6 | CSRT | Reset timeout adjust; connected to OUT for fixed 200ms timeout (D4 code) per ordering guide |
| 7 | GND | Analog/digital ground reference; must be low-impedance connection to EP and system GND plane |
| 8 | RESET | Active-low push-pull reset output; drives µP reset pin directly without pullup; asserts during brownout or watchdog fault |
| 11 | WDI | Watchdog input; rising/falling edge must occur within 280ms to prevent RESET assertion |
| 12 | HOLD | Active-low hold input; forces regulator ON even if ENABLE goes low - enables self-holding ignition circuits |
| 16 | PFI | Power-fail comparator input; sets custom undervoltage threshold via resistive divider referenced to 1.231V |
| 17,18 | IN | Main regulator input; bypassed with 1μF ceramic capacitor to GND near pins for EMI suppression |
| 19 | GATEP | pFET gate drive output; controls external high-side p-channel MOSFET for reverse-battery protection |
| 20 | ENABLE | Active-high enable input; internally pulled down (0.5μA); driven high by ignition signal to initiate startup |
| EP | Exposed Pad | Internally connected to GND; mandatory thermal path to PCB ground plane - not electrically functional as signal |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (68μA) | Enables >10-year battery standby in always-on automotive modules without parasitic drain concerns |
| 72V Absolute Max Input | Survives ISO 7637-2 Pulse 5a (load dump) without external TVS or clamping circuitry |
| HOLD + ENABLE Latching | Eliminates need for external latch IC or discrete transistor circuit in ignition-switched power domains |
| Integrated Reverse-Battery Protection Driver | GATEP output directly drives pFET gate - removes series diode voltage drop and heat generation |
| AEC-Q100 Qualified | Validated for automotive use including HTOL, temperature cycling, and ESD per Grade 0 requirements |
| Thermal Shutdown + Hysteresis | +165°C trip with 20°C hysteresis prevents thermal oscillation during sustained high-power operation |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog front-end during cold-crank (5.5V battery) and load-dump (72V transient). IC Role / Device Role / Timing Role: Primary 5V LDO regulator with reset supervision and watchdog monitoring for safety-critical boot sequence. Use Value: 420mV dropout at 100mA ensures uninterrupted 5V supply down to VIN = 5.42V; 200ms reset timeout prevents MCU lockup during slow rail recovery. | Use Scenario: Supplies image sensor, ISP processor, and serializer in compact rear-view camera housing exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Single-point power source with HOLD-latched enable and thermal protection for unattended operation. Use Value: -40°C to +125°C full-spec operation eliminates derating; GATEP-driven pFET provides reverse-battery immunity without diode loss. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in always-connected vehicle tracking systems. IC Role / Device Role / Timing Role: Low-IQ supervisor-regulator enabling >5-year battery life in sleep mode while maintaining RTC and wake-up capability. Use Value: 68μA quiescent current reduces annual battery drain to <0.6Ah; PFI/PFO enables graceful shutdown before deep discharge. | Use Scenario: Regulates power for door module microcontrollers, LIN transceivers, and LED drivers in multi-zone lighting systems. IC Role / Device Role / Timing Role: Centralized 5V source with watchdog supervision to detect firmware hangs in distributed nodes. Use Value: WDI monitoring detects stuck firmware loops; RESET output triggers safe state transition and diagnostic logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage automotive regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPZD4+T | Identical electrical specs and pinout; differs only in marking - MAX6795 is non-AEC-Q100 qualified version | Suitable for non-automotive industrial or commercial applications where AEC-Q100 is not required | Select MAX6795TPZD4+T only for cost-sensitive non-automotive designs; MAX6796TPZD4+T is mandatory for automotive production |
| TLV70733PDQNR | Lower input range (2.5V–5.5V), 300mA output, 25μA IQ - lacks watchdog, reset timeout adjust, and 72V tolerance | Applicable only in low-voltage, non-automotive embedded systems with stable 3.3V rails | Not a functional substitute - TLV70733PDQNR cannot replace MAX6796TPZD4+T in automotive or wide-input applications |
Compared with MAX6795TPZD4+T, the MAX6796TPZD4+T adds AEC-Q100 qualification and extended reliability testing; compared with TLV70733PDQNR, it provides 14× wider input range, integrated supervision, and automotive-grade thermal/EMI robustness - making it irreplaceable in under-hood power domains.
Availability
MAX6796TPZD4+T is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, and telematics units requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for MAX6796TPZD4+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 family was engineered specifically for automotive power-supply supervision - integrating high-voltage LDO regulation, reset generation, watchdog timing, and reverse-battery protection into a single AEC-Q100-qualified package.
FAQ
What output voltage does MAX6796TPZD4+T deliver?
MAX6796TPZD4+T delivers a fixed 5V output (±2.5% over -40°C to +125°C) as indicated by the 'L' in its ordering code. The 'Z' denotes 5V output with 92.5% reset threshold, and 'D4' specifies a 200ms reset timeout period. It does not support adjustable output in this configuration.
Is MAX6796TPZD4+T AEC-Q100 qualified?
Yes, MAX6796TPZD4+T is AEC-Q100 qualified (Grade 0, -40°C to +125°C). This qualification is confirmed by the '/V' suffix in related variants (e.g., MAX6795TPLD2/V+) and explicitly stated in Maxim's documentation for automotive-grade versions of the MAX6791–MAX6796 family.
How does the HOLD function work on MAX6796TPZD4+T?
On MAX6796TPZD4+T, the HOLD pin is active-low. When pulled low after ENABLE is asserted, it forces the regulator to remain ON even if ENABLE later goes low - enabling self-holding ignition circuits. Releasing HOLD (to high or open) shuts down the output. HOLD is internally pulled up to OUT with 2μA current.
Can MAX6796TPZD4+T drive a p-channel MOSFET for reverse-battery protection?
Yes, MAX6796TPZD4+T includes a dedicated GATEP output that drives the gate of an external p-channel MOSFET. This provides reverse-battery protection without series diode losses. GATEP delivers up to 12V drive at VIN = 20V and sinks current to ensure clean turn-off during fault conditions.
What is the watchdog timeout behavior of MAX6796TPZD4+T?
MAX6796TPZD4+T uses a fixed watchdog timeout of 280ms (minimum), configured via CSWT = OUT. It does not support windowed watchdog or ratio-select logic (WDS0/WDS1), which are exclusive to MAX6791/MAX6792. A valid WDI edge must occur within this period to prevent RESET assertion.
MAX6796TPZD4+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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6796TPZD4+T FAQ
1.How can I place an order for MAX6796TPZD4+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPZD4+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 MAX6796TPZD4+T reliable?
The price and inventory of MAX6796TPZD4+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPZD4+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPZD4+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPZD4+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPZD4+T?
MAX6796TPZD4+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPZD4+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 MAX6796TPZD4+T?
For technical support, including MAX6796TPZD4+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPZD4+T requirements.
6.How does Aetrix verify that MAX6796TPZD4+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPZD4+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 MAX6796TPZD4+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPZD4+T?
All MAX6796TPZD4+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPZD4+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 MAX6796TPZD4+T part is unused and in its original packaging.
Return procedure for MAX6796TPZD4+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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