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Analog Devices Inc./Maxim Integrated MAX6796TPLD1+T
- Part No.:
- MAX6796TPLD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX6796TPLD1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,938
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Product details
Overview
MAX6796TPLD1+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 includes active-low RESET, watchdog timer, ENABLE, and HOLD inputs. It is used in engine control units (ECUs) and body control modules requiring robust brownout protection and microprocessor supervision.
For engineers reviewing the MAX6796TPLD1+T datasheet, MAX6796TPLD1+T pinout, MAX6796TPLD1+T application, or MAX6796TPLD1+T equivalent, key selection criteria include its 300mA single-output capability, 5–72V wide input range, AEC-Q100-qualified thermal performance (−40°C to +125°C), adjustable or fixed 5V/3.3V/2.5V/1.8V output, and integrated watchdog timeout with disable function.
Technical Context
The MAX6796TPLD1+T implements a high-side pFET-based linear regulation architecture with internal feedback loop referenced to SET pin, supporting both preset and adjustable outputs (1.8V–11V). Its supervisory block integrates a comparator-based RESET generator with fixed 92.5% reset threshold (relative to VOUT), capacitor-adjustable reset timeout (via CSRT), and a dual-mode watchdog with configurable fast/slow fault detection.
It features dedicated HOLD functionality that latches the regulator ON after initial enable-enabling self-holding circuits without external components-and reverse-battery protection via GATEP-driven p-channel MOSFET. All protections (thermal shutdown at +165°C, short-circuit current limit of 400mA, output overvoltage clamp at 1.05×VOUT) are fully specified across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 72V - withstands automotive load-dump transients without external clamping. |
| Output Current | Up to 300mA - sufficient for powering MCU cores, CAN transceivers, and sensor interfaces in ECUs. |
| Quiescent Current | 68μA typical - enables always-on operation in vehicle sleep modes while meeting ISO 11898-2 leakage budgets. |
| Dropout Voltage | 420mV typ. at 100mA - ensures stable 5V output even at VIN = 5.42V, critical during cold-crank conditions. |
| Reset Threshold | 92.5% of VOUT (L/M option) - asserts RESET before microprocessor brownout, with 35μs propagation delay. |
| Watchdog Timeout | 280ms min (fixed) or capacitor-adjustable - provides fail-safe recovery for stalled firmware in safety-critical nodes. |
| Operating Temp | −40°C to +125°C - qualified per AEC-Q100 Grade 0, suitable for under-hood placement. |
Pinout & Package
MAX6796TPLD1+T is housed in a thermally enhanced 20-pin TQFN package (5mm × 5mm, exposed pad), rated for 2.7W continuous dissipation at +70°C ambient. The EP is internally connected to GND and must be soldered to PCB ground plane for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT | Regulator Output | Single regulated output (preset or adjustable 1.8V–11V); requires ≥10μF ceramic capacitor to GND for stability. |
| SET | Feedback Input | Connect to GND for preset voltage (5V/3.3V/2.5V/1.8V); connect resistive divider for adjustable output. |
| ENABLE | Active-High Enable | Drives regulator ON when pulled >1.4V; internally pulldown (0.5μA) for default OFF state. |
| HOLD | Active-Low Hold | Forces OUT ON after initial enable-even if ENABLE goes low-enabling ignition-key self-hold circuits. |
| RESET | Active-Low Reset Output | Push-pull or open-drain; asserts low during VOUT undervoltage or watchdog timeout, with fixed or CSRT-adjustable duration. |
| WDI | Watchdog Input | Accepts µP toggle signal; missing edge within tWD triggers RESET; clears on valid transition or RESET assertion. |
| CSRT | Reset Timeout Adjust | Capacitor-to-GND sets timeout (35μs–200ms); connect to OUT for fixed internal periods (D0–D4). |
| CSWT | Watchdog Timeout Adjust | Capacitor-to-GND sets watchdog period (170ms–520ms); connect to OUT for fixed 280ms min timeout. |
| PFI / PFO | Power-Fail Monitor I/O | PFI compares against 1.231V reference; PFO asserts low when input falls below threshold (e.g., battery sag detection). |
| GATEP | pFET Gate Drive | Drives external p-channel MOSFET source-to-battery for reverse-polarity protection without diode loss. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (68μA) | Enables direct battery connection in always-on domains (e.g., CAN wake-up receivers) without excessive parasitic drain. |
| 72V Absolute Max Input | Eliminates need for external TVS or Zener clamping during 12V/24V automotive load-dump events (ISO 7637-2 Pulse 5a). |
| Integrated HOLD Function | Allows ignition-switched enable with zero-component self-hold-reducing BOM count and PCB area in ECU power trees. |
| Adjustable Watchdog Window | Supports both fast-fault (e.g., infinite loop) and slow-fault (e.g., scheduler stall) detection via WDS0/WDS1 logic select (MAX6791/92 only; not applicable to MAX6796). |
| Reverse-Battery Protection | GATEP output drives pFET to block −14V/−28V reverse polarity-replacing Schottky diodes and saving >1W conduction loss at 300mA. |
| AEC-Q100 Qualified | Validated for automotive use including HTOL, TC, UHAST, and ESD testing-ensuring reliability in harsh under-hood environments. |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Supervisor |
|---|---|
Use Scenario: Powers 32-bit MCU core and CAN FD transceiver in gasoline/diesel ECU, operating continuously across cold-crank (5.5V) to load-dump (72V) conditions. IC Role / Device Role / Timing Role: Primary 5V LDO with RESET supervision and watchdog monitoring of main application processor. Use Value: 300mA output sustains full ECU operation during cranking; 68μA IQ prevents battery depletion during weeks of parking; HOLD enables ignition-triggered latching without relay. | Use Scenario: Supplies 3.3V to door module microcontroller and LIN transceiver, with early warning of battery voltage sag prior to system shutdown. IC Role / Device Role / Timing Role: Single-output regulator with PFI/PFO comparator for battery health monitoring and graceful power-down sequencing. Use Value: Adjustable PFI threshold (via resistor divider) detects 11.8V battery sag; RESET holds MCU in reset until VOUT recovers to 92.5% nominal, preventing corrupted EEPROM writes. |
| Advanced Driver Assistance System (ADAS) Camera Power | Electric Power Steering (EPS) Motor Controller Bias Supply |
Use Scenario: Provides clean 2.5V bias to image sensor and ISP in rear-view camera module mounted near exhaust manifold. IC Role / Device Role / Timing Role: High-PSRR (69dB @100Hz), low-noise LDO with thermal shutdown protection at +125°C junction. Use Value: 420mV dropout at 100mA ensures 2.5V output remains stable at VIN = 2.92V during cold-crank; thermal hysteresis (20°C) prevents oscillation near shutdown threshold. | Use Scenario: Generates 5V supply for EPS motor controller's gate driver ICs and position sensors, surviving repeated 60V transients during regenerative braking. IC Role / Device Role / Timing Role: Robust primary regulator with reverse-battery protection (GATEP-driven pFET) and short-circuit limiting (400mA). Use Value: GATEP eliminates series diode drop-preserving 5V rail during 300mA peak loads; short-circuit limit protects against H-bridge shoot-through faults without external fusing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage micropower regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6795TPLD2/V+ | Same pinout and function; differs only in reset timeout (D2 = 12.5ms vs. D1 = 3.125ms) and AEC-Q100 qualification (V+ suffix). | Requires identical circuit layout but targets higher-reliability automotive programs where formal qualification documentation is mandatory. | Select MAX6795TPLD2/V+ when AEC-Q100 certification evidence (test reports, PPAP) is contractually required. |
| TLE4276-2G | Fixed 5V output only; no adjustable SET, no watchdog, no HOLD; 70μA IQ; 40V max input; SOIC-8 package. | Lacks supervision features and high-voltage capability-suitable only for non-safety-critical 12V systems with simple ON/OFF control. | Choose TLE4276-2G only for cost-sensitive, non-AEC-Q100 applications where watchdog, HOLD, and 72V operation are unnecessary. |
Compared with MAX6795TPLD2/V+, MAX6796TPLD1+T offers shorter reset timeout (3.125ms vs. 12.5ms) and lacks formal AEC-Q100 documentation-but retains identical electrical behavior and pin compatibility. Versus TLE4276-2G, MAX6796TPLD1+T adds critical supervision, wider input range, and latch-hold capability at modest BOM cost premium.
Availability
MAX6796TPLD1+T is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera power supplies, and electric power steering systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6796TPLD1+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 family was engineered specifically for automotive power-supply supervision-integrating high-voltage LDO regulation, RESET generation, watchdog monitoring, and reverse-battery protection into a single AEC-Q100-capable package for ECU and BCM applications.
FAQ
What output voltage options does the MAX6796TPLD1+T support?
The MAX6796TPLD1+T supports fixed preset outputs of 5.0V, 3.3V, 2.5V, or 1.8V (selected by factory configuration encoded in the part number suffix), and an adjustable output from 1.8V to 11V using an external resistive divider connected to the SET pin. The "L" in MAX6796TPLD1+T indicates a 5V preset output with 92.5% reset threshold and 3.125ms reset timeout.
Does the MAX6796TPLD1+T include reverse-battery protection?
Yes, the MAX6796TPLD1+T includes integrated reverse-battery protection via its GATEP pin, which drives the gate of an external p-channel MOSFET to block reverse current flow. This eliminates the need for series Schottky diodes, reducing conduction loss and heat generation-especially critical in high-current automotive applications where efficiency and thermal margin matter.
How does the HOLD function operate in the MAX6796TPLD1+T?
The HOLD input in the MAX6796TPLD1+T is an active-low signal that, when pulled low after initial enable, forces the regulator output (OUT) to remain ON even if the ENABLE pin is subsequently driven low. Releasing HOLD (i.e., pulling it high or leaving it floating) shuts down the regulator. This enables self-holding circuits-such as ignition-key triggered power rails-without external latching components.
Can the watchdog timer in the MAX6796TPLD1+T be disabled?
Yes, the watchdog timer in the MAX6796TPLD1+T can be disabled. For MAX6796 devices, driving the WD-DIS pin low disables the watchdog function entirely. When disabled, WDI transitions have no effect on RESET assertion, and the device relies solely on power-supply monitoring for reset generation-providing design flexibility for systems where firmware-level watchdog supervision is handled externally.
What is the maximum continuous power dissipation of the MAX6796TPLD1+T?
The MAX6796TPLD1+T has a maximum continuous power dissipation of 2667mW at TA = +70°C in its 20-pin TQFN package. Derating is 33.3mW/°C above +70°C. With proper PCB copper pour connected to the exposed pad (EP), the device sustains full 300mA output at +125°C ambient in automotive under-hood environments-validated per AEC-Q100 thermal test requirements.
MAX6796TPLD1+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:
- 4.625V, 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)
MAX6796TPLD1+T FAQ
1.How can I place an order for MAX6796TPLD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6796TPLD1+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 MAX6796TPLD1+T reliable?
The price and inventory of MAX6796TPLD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6796TPLD1+T is usually 5 days.
3.What payment methods are accepted for MAX6796TPLD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6796TPLD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6796TPLD1+T?
MAX6796TPLD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6796TPLD1+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 MAX6796TPLD1+T?
For technical support, including MAX6796TPLD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6796TPLD1+T requirements.
6.How does Aetrix verify that MAX6796TPLD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6796TPLD1+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 MAX6796TPLD1+T meets industry standards.
7.What is the process for return or replacement of MAX6796TPLD1+T?
All MAX6796TPLD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6796TPLD1+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 MAX6796TPLD1+T part is unused and in its original packaging.
Return procedure for MAX6796TPLD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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