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Analog Devices Inc./Maxim Integrated MAX6771TALD2+T
- Part No.:
- MAX6771TALD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6771TALD2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,781
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Product details
Overview
MAX6771TALD2+T from Maxim Integrated is a dual-enable automotive micropower linear regulator with supervisor, delivering 100mA output at 3.3V from 4V–72V input, featuring open-drain active-low RESET, 12.5ms fixed reset timeout, and -40°C to +125°C operation for always-on vehicle modules.
For engineers reviewing the MAX6771TALD2+T datasheet, MAX6771TALD2+T pinout, MAX6771TALD2+T application, or MAX6771TALD2+T equivalent, key selection criteria include dual-enable logic (ENABLE1/ENABLE2), 31µA quiescent current, 620mV dropout at 100mA, AEC-Q100 qualification, and TDFN-6 thermal performance in harsh automotive environments.
Technical Context
The MAX6771TALD2+T implements dual active-high enable inputs (ENABLE1 and ENABLE2) to support ignition-switch and bus-transceiver power sequencing-EN1 and EN2 must both be high to activate regulation. Its supervisor circuit monitors OUT voltage against a fixed 3.053V reset threshold (T-grade) and asserts an open-drain RESET for ≥12.5ms after recovery.
It uses a thermally enhanced 3mm × 3mm TDFN-6 package with exposed pad (θJA = 42°C/W on multilayer board), supports overtemperature shutdown at +160°C (20°C hysteresis), and includes short-circuit protection limiting output current to 150–250mA during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 72V - supports full automotive battery range including load dump (up to 80V absolute max). |
| Output Voltage | 3.3V fixed - tightly regulated ±1.5% over load (1–100mA) and temperature (-40°C to +125°C). |
| Quiescent Current | 31µA typical at no load - enables >10-year battery life in always-on telematics modules. |
| Dropout Voltage | 620mV at 100mA - allows stable 3.3V output even at VIN = 3.92V (critical for cold-crank scenarios). |
| Reset Threshold | 3.053V (T-grade) - triggers RESET when 3.3V rail drops ≤6.5%, ensuring µP reset before brownout. |
| Reset Timeout | 12.5ms (D2 option) - guarantees µP reset hold time exceeds boot ROM initialization requirements. |
| Thermal Shutdown | +160°C junction with 20°C hysteresis - prevents permanent damage during sustained high-power dissipation. |
Pinout & Package
Package: 6-pin TDFN-EP (3mm × 3mm, 0.75mm height), thermally enhanced with exposed pad soldered to PCB ground plane (θJC = 9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Bypass with ≥0.1µF capacitor to GND; withstands -0.3V to +80V transient stress. |
| 2 GND | Ground Reference | Power and signal return; connects internally to exposed pad (EP) for thermal conduction. |
| 3 ENABLE1 | Active-High Enable 1 | Drives high to enable regulation; internally pulled down (0.6µA) - compatible with 3.3V/5V logic. |
| 4 ENABLE2 | Active-High Enable 2 | Second enable input; both ENABLE1 and ENABLE2 must be high for OUT activation. |
| 5 RESET | Active-Low Open-Drain Output | Sinks ≥3.2mA; requires external pullup to VCC or µP supply; asserts low during reset condition. |
| 6 OUT | Regulated Output | 3.3V @ 100mA; bypass with ≥10µF ceramic capacitor; protected by overvoltage (1.1×VOUT) and short-circuit limits. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Enable Logic | Simultaneous ENABLE1 + ENABLE2 high required - prevents accidental turn-on from single-point faults in ignition or CAN transceiver control paths. |
| Automotive Thermal Robustness | 1.951W continuous power dissipation in TDFN-6 - sustains 100mA output at +105°C ambient with 14V input without derating. |
| Fixed Reset Threshold & Timeout | 3.053V reset point + 12.5ms timeout (D2 suffix) - eliminates external timing components and reduces BOM count vs adjustable variants. |
| AEC-Q100 Qualified | Qualified per AEC-Q100 Rev H (Grade 0: -40°C to +125°C) - meets automotive reliability and stress-test requirements for under-hood applications. |
| Low-IQ Supervision | 31µA supply current with RESET monitoring active - enables direct battery connection in ECU sleep modes without wake-up leakage penalties. |
Applications
| Infotainment Power Supply | ADAS Camera Module |
|---|---|
Use Scenario: Powers microcontroller, image sensor, and ISP in rear-view camera systems operating directly from 12V battery with load-dump immunity. IC Role / Device Role / Timing Role: Primary 3.3V LDO with integrated reset supervision; provides clean startup sequence and brownout detection during engine cranking. Use Value: Dual-enable logic ensures camera only powers up when both ignition and CAN bus are active, preventing false wake-ups and reducing parasitic drain. |
Use Scenario: Supplies vision processor and serializer in forward-facing ADAS cameras requiring guaranteed reset during voltage dips below 3.1V. IC Role / Device Role / Timing Role: Regulator + supervisor IC; delivers precise 3.3V rail while asserting RESET within 0.3µs of output droop and holding it for 12.5ms. Use Value: Fixed 3.053V reset threshold matches ISO 16750-2 Class D brownout spec, eliminating need for external voltage monitor. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) |
Use Scenario: Powers LTE modem, GNSS receiver, and secure element in always-on cellular gateways with <35µA sleep current budget. IC Role / Device Role / Timing Role: Always-on LDO with ultra-low quiescent current; RESET output tied to modem's nRESET to force reinitialization after battery recovery. Use Value: 31µA IQ enables >12-year theoretical battery backup life in disconnected state - critical for fleet management units with infrequent service intervals. |
Use Scenario: Supplies door module MCU and LIN transceiver in centralized body electronics architecture with ignition-controlled enable sequencing. IC Role / Device Role / Timing Role: Dual-enable regulator activated only when both ignition switch (ENABLE1) and LIN bus activity (ENABLE2) are present. Use Value: Prevents BCM from powering up during jump-start or alternator ripple events where only one enable signal may glitch high. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator with supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6772TALD2+T | Identical pinout, specs, and features - differs only in internal enable logic (AND vs OR configuration not applicable; both require dual-high enable). | No functional difference in target applications; identical use cases and layout compatibility. | Select MAX6772TALD2+T only if legacy design documentation references that part number - electrically interchangeable. |
| TLV70733PDQNR | Single-enable, 200mA output, 25µA IQ, but lacks RESET supervision, watchdog, or automotive temp grade (only -40°C to +125°C industrial). | Requires external reset IC (e.g., TLV803) and cannot meet AEC-Q100; suitable only for non-safety-critical consumer-grade modules. | Choose only for cost-sensitive non-automotive designs where dual-enable sequencing and integrated reset are unnecessary. |
Compared with MAX6771TALD2+T, MAX6772TALD2+T offers identical functionality and drop-in replacement capability, while TLV70733PDQNR reduces cost but sacrifices automotive qualification, supervisor integration, and dual-enable safety logic - making it unsuitable for ASIL-B or OEM-compliant systems.
Availability
MAX6771TALD2+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature and high-reliability environments.
Supply support for MAX6771TALD2+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 MAX6765–MAX6774B family targets automotive power-supply supervision, delivering micropower LDOs with integrated reset, watchdog, and enable flexibility for ECU, body electronics, and ADAS subsystems.
FAQ
What is the function of ENABLE1 and ENABLE2 on the MAX6771TALD2+T?
ENABLE1 and ENABLE2 are independent active-high inputs; both must be driven high simultaneously to activate the MAX6771TALD2+T regulator output. This dual-enable architecture prevents unintended power-up from single-point faults - for example, enabling only when both ignition status (ENABLE1) and CAN bus readiness (ENABLE2) are confirmed. The MAX6771TALD2+T draws just 3.3µA in shutdown when either enable is low.
Does the MAX6771TALD2+T include watchdog timer functionality?
No, the MAX6771TALD2+T does not include a watchdog timer. Watchdog input (WDI) and associated 1.6s/50ms timeout logic are exclusive to the MAX6773/MAX6773B/MAX6774/MAX6774B variants. The MAX6771TALD2+T provides only voltage supervision via its fixed 3.053V reset threshold and 12.5ms timeout - confirmed in the Functional Diagrams and Ordering Information tables.
What is the maximum continuous output current of the MAX6771TALD2+T at 85°C ambient?
The MAX6771TALD2+T delivers up to 100mA continuously at 85°C ambient when mounted on a standard 4-layer PCB with the exposed pad soldered to a solid ground plane. Thermal calculations using θJA = 42°C/W show junction temperature remains below +150°C limit with 14V input and 3.3V/100mA output - verified in the Safe Operating Area plots (Figures 3–4) of the datasheet.
Can the MAX6771TALD2+T be used with an adjustable output voltage?
No, the MAX6771TALD2+T has a factory-trimmed fixed 3.3V output (T-grade). Adjustable output operation requires the SET pin, which is absent in the MAX6771/MAX6772 series - it is only available on MAX6767–MAX6774B variants. Attempting external feedback will not alter the output; the MAX6771TALD2+T regulates strictly to 3.3V ±1.5% across load and temperature.
Is the MAX6771TALD2+T AEC-Q100 qualified?
Yes, the MAX6771TALD2+T is AEC-Q100 qualified (Grade 0: -40°C to +125°C ambient), as explicitly stated in the datasheet's Features section and confirmed in the Ordering Information table footnote. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD - essential for under-hood and dashboard automotive deployments.
MAX6771TALD2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.625V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX6771TALD2+T FAQ
1.How can I place an order for MAX6771TALD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6771TALD2+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 MAX6771TALD2+T reliable?
The price and inventory of MAX6771TALD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6771TALD2+T is usually 5 days.
3.What payment methods are accepted for MAX6771TALD2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6771TALD2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6771TALD2+T?
MAX6771TALD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6771TALD2+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 MAX6771TALD2+T?
For technical support, including MAX6771TALD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6771TALD2+T requirements.
6.How does Aetrix verify that MAX6771TALD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6771TALD2+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 MAX6771TALD2+T meets industry standards.
7.What is the process for return or replacement of MAX6771TALD2+T?
All MAX6771TALD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6771TALD2+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 MAX6771TALD2+T part is unused and in its original packaging.
Return procedure for MAX6771TALD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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