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Analog Devices Inc./Maxim Integrated MAX6796TPMD1+T
- Part No.:
- MAX6796TPMD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPMD1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,108
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Product details
Overview
MAX6796TPMD1+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 fixed 5V output with 92.5% reset threshold - enabling robust operation during load-dump events in engine control units and body electronics.
For engineers reviewing the MAX6796TPMD1+T datasheet, MAX6796TPMD1+T pinout, MAX6796TPMD1+T application, or MAX6796TPMD1+T equivalent, key selection criteria include its AEC-Q100-qualified 5mm × 5mm TQFN package, capacitor-adjustable watchdog/reset timeout, HOLD-enabled self-holding circuitry, and thermal protection up to +125°C ambient.
Technical Context
The MAX6796TPMD1+T implements a single high-side linear regulator with internal pFET gate drive (GATEP) for reverse-battery protection and integrates a dual-mode watchdog timer (fixed 280ms or capacitor-adjustable) plus a RESET output with programmable timeout (35μs to 200ms). Its SET pin enables fixed 5V output or adjustable 1.8V–11V regulation via external resistor divider.
Supervisory logic monitors OUT voltage against a precision 92.5% reset threshold (4.625V nominal at 5V output), asserts open-drain/push-pull RESET on dropout or watchdog fault, and supports HOLD-based latching without external components - all while maintaining full -40°C to +125°C operation and AEC-Q100 compliance.
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 microcontroller core rails and CAN transceivers |
| Quiescent Current | 68μA typical - enables always-on functionality in battery-sensitive systems |
| Dropout Voltage | 420mV typ at 100mA - maintains regulation down to VIN = VOUT + 0.42V |
| Reset Threshold | 92.5% of VOUT (4.625V at 5V output) - precise brownout detection aligned to regulated rail |
| Watchdog Timeout | 280ms min (fixed) or capacitor-adjustable - configurable fault-detection window for MCU supervision |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments |
| Package | 20-pin TQFN-EP (5mm × 5mm) - thermally enhanced for 2.7W dissipation at +70°C ambient |
Pinout & Package
MAX6796TPMD1+T uses a 20-pin thermally enhanced TQFN-EP (5mm × 5mm) package with exposed pad (EP) connected internally to GND for low-thermal-resistance PCB mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 | OUT | Regulator output - delivers up to 300mA; requires ≥10μF ceramic capacitor to GND |
| 3 | SET | Feedback input - tied to GND for 5V fixed output; used with resistive divider for adjustable 1.8V–11V |
| 4 | PFO | Active-low open-drain power-fail output - asserts when PFI falls below 1.231V threshold |
| 5 | CSWT | Watchdog timeout adjust - connect to OUT for fixed 280ms timeout or to capacitor for adjustable period |
| 6 | CSRT | Reset timeout adjust - connect to OUT for fixed timeout (D1 = 3.125ms) or to capacitor for user-defined delay |
| 7 | GND | Power and signal ground - connects to EP for thermal conduction |
| 8 | RESET | Active-low reset output - push-pull or open-drain; holds low for CSRT-defined period after VOUT recovery |
| 11 | WDI | Watchdog input - rising/falling edge must occur within timeout window to prevent RESET assertion |
| 12 | HOLD | Active-low hold enable - forces regulator ON even if ENABLE goes low; latches self-holding state |
| 16 | PFI | Power-fail comparator input - set threshold via resistor divider to monitor battery or pre-regulated rail |
| 17,18 | IN | Main regulator input - bypass with 1μF capacitor to GND; accepts 5V–72V supply |
| 19 | GATEP | pFET gate driver - drives external PMOS for reverse-battery protection without series diode loss |
| 20 | ENABLE | Active-high enable - internal 0.5μA pulldown; logic high turns regulator ON |
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 - eliminates 0.3V–0.7V diode drop and associated heat |
| Self-holding circuit support | HOLD pin latches regulator ON without external latch IC or discrete components |
| Capacitor-adjustable timing | CSRT and CSWT pins allow precise tuning of reset/watchdog timeouts across production lots |
| AEC-Q100 qualified | Qualified per Grade 0 (-40°C to +125°C) - validated for engine control, ADAS, and body domain ECUs |
| Thermal & overcurrent protection | 165°C shutdown with 20°C hysteresis and 480mA short-circuit limit - prevents field failure under overload |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN transceiver, and sensor interface in gasoline/diesel ECU under wide battery voltage swing (6V–16V) and load-dump stress (up to 72V). IC Role / Device Role / Timing Role: Primary 5V LDO regulator with reset supervision and watchdog monitoring of MCU firmware execution. Use Value: 68μA IQ extends stop-start battery life; 72V input tolerance eliminates need for TVS clamping; HOLD enables ignition-key-triggered latching. | Use Scenario: Supplies vision processor and radar SoC in forward collision warning module operating near engine bay with ambient up to +105°C. IC Role / Device Role / Timing Role: Single-point 5V power source with thermal shutdown, output overvoltage protection, and precise reset coordination. Use Value: 2.7W thermal capability sustains 300mA at +105°C; 1.8V–11V adjustability supports future SoC voltage scaling; AEC-Q100 Grade 0 ensures reliability. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Powers door module MCU and LIN transceiver in 12V architecture with extended sleep mode requirements. IC Role / Device Role / Timing Role: Always-on 5V regulator with programmable reset timeout and watchdog disable for low-power sleep states. Use Value: 27μA shutdown current minimizes parasitic drain; WD-DIS pin allows clean watchdog disable during deep-sleep entry/exit. | Use Scenario: Provides safety-critical 5V rail to torque sensor, motor controller MCU, and ASIL-B diagnostic circuitry. IC Role / Device Role / Timing Role: Functional-safety-aware power supervisor with dual independent fault detection (reset + watchdog) and fail-safe RESET assertion. Use Value: Windowed watchdog not applicable, but fixed 280ms timeout meets ISO 26262 ASIL-B timing constraints; output overvoltage protection limits fault propagation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage linear regulator with supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPMD2/V+ | Same family, identical pinout and electrical specs; differs only in reset timeout option (D2 = 12.5ms vs D1 = 3.125ms) | Used where longer reset hold time is required after brownout recovery | Select MAX6796TPMD1+T for faster system restart; choose MAX6795TPMD2/V+ only if 12.5ms reset timeout is mandated by MCU reset timing spec |
| TLE42764GV50 | Infineon automotive LDO; 450mA output, 70μA IQ, but no integrated watchdog or HOLD function | Lacks self-holding and watchdog supervision - requires external circuitry for latching or MCU supervision | Choose MAX6796TPMD1+T when HOLD-based ignition latching or watchdog supervision is required; TLE42764GV50 suits simpler always-on 5V rail needs |
Compared with MAX6795TPMD2/V+, MAX6796TPMD1+T offers shorter 3.125ms reset timeout for rapid MCU recovery; versus TLE42764GV50, it integrates HOLD and watchdog - reducing BOM count and board space in complex automotive nodes.
Availability
MAX6796TPMD1+T is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and body control modules requiring stable component supply across automotive production lifecycles.
Supply support for MAX6796TPMD1+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-supply supervision, delivering high-input-voltage regulation with integrated reset, watchdog, and reverse-battery protection in thermally robust packages.
FAQ
What output voltage does MAX6796TPMD1+T deliver?
MAX6796TPMD1+T delivers a fixed 5V output. The "MD1" suffix indicates preset 5V output with 92.5% reset threshold (4.625V) and 3.125ms reset timeout. It can also be configured for adjustable output from 1.8V to 11V using an external resistor divider on the SET pin - though the factory-programmed MD1 variant is optimized for 5V use.
Does MAX6796TPMD1+T support reverse-battery protection?
Yes, MAX6796TPMD1+T supports reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET. When battery polarity is reversed, the IC disables the pFET, blocking current flow and protecting downstream circuitry - eliminating the need for lossy series diodes and their associated voltage drop and thermal issues.
How does the HOLD function work on MAX6796TPMD1+T?
The HOLD pin on MAX6796TPMD1+T enables self-holding operation: once ENABLE is asserted and the regulator starts, pulling HOLD low latches the output ON permanently - even if ENABLE later goes low. Releasing HOLD (pulling high or leaving open) shuts down the regulator. This allows ignition-key-triggered power sequencing without external latch components.
Is MAX6796TPMD1+T AEC-Q100 qualified?
Yes, MAX6796TPMD1+T is AEC-Q100 qualified (Grade 0, -40°C to +125°C). It undergoes stress testing including temperature cycling, HTOL, and ESD per automotive standards, making it suitable for under-hood applications such as engine control, transmission control, and ADAS sensors where reliability under extreme thermal and electrical conditions is mandatory.
Can the watchdog timer on MAX6796TPMD1+T be disabled?
Yes, the watchdog timer on MAX6796TPMD1+T can be disabled using the WD-DIS pin. Driving WD-DIS low disables the watchdog function entirely, allowing the device to operate as a pure regulator and supervisor without periodic WDI toggling requirements - useful during MCU debug, bootloader execution, or low-power sleep modes where watchdog supervision is unnecessary.
MAX6796TPMD1+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:
- 4.375V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 2.187ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX6796TPMD1+T FAQ
1.How can I place an order for MAX6796TPMD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPMD1+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 MAX6796TPMD1+T reliable?
The price and inventory of MAX6796TPMD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPMD1+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPMD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPMD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPMD1+T?
MAX6796TPMD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPMD1+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 MAX6796TPMD1+T?
For technical support, including MAX6796TPMD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPMD1+T requirements.
6.How does Aetrix verify that MAX6796TPMD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPMD1+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 MAX6796TPMD1+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPMD1+T?
All MAX6796TPMD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPMD1+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 MAX6796TPMD1+T part is unused and in its original packaging.
Return procedure for MAX6796TPMD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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