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Analog Devices Inc./Maxim Integrated MAX6773TALD2+T
- Part No.:
- MAX6773TALD2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6773TALD2+T.pdf
- Description:
- IC REG LINEAR 5V 8-TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,582
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Product details
Overview
MAX6773TALD2+T from Maxim Integrated is an automotive-grade micropower linear regulator with integrated supervisor and watchdog timer, delivering 100mA at 5.0V output from 4V–72V input, featuring 38µA quiescent current, open-drain active-low RESET, 12.5ms fixed reset timeout, and 1.6s watchdog timeout - deployed in always-on vehicle control modules requiring high reliability under wide temperature and voltage transients.
For engineers reviewing the MAX6773TALD2+T datasheet, MAX6773TALD2+T pinout, MAX6773TALD2+T application, or MAX6773TALD2+T equivalent, this page delivers verified technical context, exact pin functions, real-world automotive use cases, and validated alternative options for power-supply supervision in harsh-environment embedded systems.
Technical Context
The MAX6773TALD2+T implements a high-voltage linear regulator with internal PMOS pass device, fixed 5.0V output (L-suffix), and dual supervision: a voltage-monitoring RESET circuit with 4.625V threshold (TAL) and capacitor-adjustable or fixed 12.5ms timeout (D2), plus a non-disableable watchdog timer (WDI) with 1.6s typical timeout that asserts RESET on WDI stall.
It uses a single active-high ENABLE input and supports operation across –40°C to +125°C with overtemperature shutdown at 160°C and short-circuit protection. The device operates in push-pull or open-drain RESET mode (configured by external pull-up), and includes thermal derating support via its 3mm × 3mm TDFN-EP package with θJA = 42°C/W on multilayer board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 72V - supports direct connection to automotive battery rail including load-dump (80V abs max) and cold-crank (4V min) conditions. |
| Output Voltage | 5.0V ±2.5% (L-suffix) - factory-trimmed, stable across 1mA–100mA load and –40°C to +125°C. |
| Quiescent Current | 38µA (typ) at no load - enables >10-year battery standby life in always-on telematics or body-control modules. |
| RESET Threshold | 4.625V (TAL suffix) - triggers reset when regulated 5V output drops below 92.5% of nominal, preventing microprocessor brownout execution. |
| Reset Timeout | 12.5ms (D2 suffix) - ensures µP remains held in reset long enough for full power-rail stabilization after recovery. |
| Watchdog Timeout | 1.6s (typ) - detects firmware lockup in engine control or ADAS ECUs where software hangs exceed safe response window. |
| Dropout Voltage | 620mV at 100mA - allows regulation down to VIN = 5.62V, sustaining 5V output during deep battery sag. |
Pinout & Package
MAX6773TALD2+T is housed in a thermally enhanced 6-pin TDFN-EP (3mm × 3mm, package code T633+2), with exposed pad (EP) soldered to PCB ground plane for optimal thermal dissipation (θJC = 9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Accepts 4V–72V unregulated supply; requires ≥0.1µF ceramic bypass to GND close to pin. |
| 2 GND | Ground Reference | Primary return path for regulator, RESET, TIMEOUT, and internal circuits; connects to EP. |
| 3 ENABLE | Active-High Enable | Drives regulator ON when pulled ≥1.4V; internally pulldown-biased (0.6µA) to GND when floating. |
| 4 RESET | Active-Low Reset Output | Open-drain/push-pull configurable; asserts low on VOUT < 4.625V or WDI stall; holds for 12.5ms post-recovery. |
| 5 TIMEOUT | Reset Timeout Adjust | Connected to OUT for fixed 12.5ms timeout (D2); capacitor-to-GND enables adjustable timing per datasheet table. |
| 6 OUT | Regulated Output | Delivers up to 100mA at 5.0V; requires ≥10µF ceramic output capacitor with low ESR for stability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications (Grade 0: –40°C to +125°C ambient), with production-tested reliability and failure-rate validation. |
| Integrated watchdog timer | 1.6s timeout prevents undetected firmware hang in safety-critical ECUs without requiring external timing components. |
| Fixed 5.0V output with tight tolerance | ±2.5% over full temperature/load range eliminates need for external feedback resistors or trimming in standard 5V logic domains. |
| 12.5ms factory-set reset timeout | Guaranteed minimum assertion time ensures µP reset sequencing meets ARM Cortex-M or Infineon AURIX boot requirements. |
| Overtemperature & short-circuit protection | Thermal shutdown at 160°C with 20°C hysteresis and current limiting prevent catastrophic failure during fault conditions. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers microcontroller and CAN transceiver in gasoline/diesel engine management system exposed to 12V battery fluctuations, load dump, and cranking. IC Role / Device Role / Timing Role: Primary 5V supply regulator with voltage supervision and watchdog monitoring of main MCU firmware execution. Use Value: Prevents erroneous code execution during cold-crank voltage sag (down to 4V) and ensures deterministic reset recovery within 12.5ms. |
Use Scenario: Supplies door module MCU and LIN transceiver in centralized body electronics architecture with always-on wake capability. IC Role / Device Role / Timing Role: Always-on 5V LDO with ultra-low 38µA quiescent current and watchdog supervision for intrusion detection and remote keyless entry. Use Value: Enables >10-year battery life in parked vehicle while guaranteeing rapid, reliable MCU reset upon wake event or firmware fault. |
| Advanced Driver Assistance Systems (ADAS) | Telematics Control Unit (TCU) |
Use Scenario: Powers vision processor and sensor interface in forward collision warning camera module operating under extreme ambient temperatures. IC Role / Device Role / Timing Role: High-reliability 5V regulator with AEC-Q100 qualification, thermal shutdown, and 1.6s watchdog to detect perception algorithm freeze. Use Value: Maintains functional safety integrity by forcing controlled reset before thermal runaway or software deadlock compromises sensor fusion. |
Use Scenario: Supplies cellular modem, GPS receiver, and secure element in connected car infotainment gateway with OTA update capability. IC Role / Device Role / Timing Role: Supervised 5V power source with RESET assertion on VOUT brownout and WDI-triggered reset on modem firmware hang. Use Value: Ensures robust field-upgrade resilience by recovering from communication stack crashes without requiring physical service intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive linear regulator with supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6773TALD3+T | Same 5V/4.625V/1.6s watchdog, but 50ms reset timeout (D3) instead of 12.5ms (D2). | Suitable where longer reset hold time is required for complex boot sequences (e.g., multi-core SoC initialization). | Select MAX6773TALD3+T only if system boot timing demands >12.5ms guaranteed reset assertion. |
| TLV70750PDQNR | 5V fixed LDO only (no RESET, no watchdog, no high-voltage input); 200mA output; 25µA IQ; max VIN = 5.5V. | Limited to low-voltage post-regulation (e.g., 5V rail derived from DC-DC converter), not direct battery-fed applications. | Use TLV70750PDQNR only in non-battery-direct, space-constrained designs where supervision is handled elsewhere. |
Compared with MAX6773TALD2+T, MAX6773TALD3+T extends reset hold time for slower-booting processors, while TLV70750PDQNR trades supervision and HV capability for lower IQ and smaller footprint in secondary-regulation roles.
Availability
MAX6773TALD2+T is available at Aetrix Electronics and suitable for automotive engine control, body electronics, ADAS camera modules, and telematics units requiring stable component supply across extended temperature and voltage stress conditions.
Supply support for MAX6773TALD2+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, emphasizing high reliability and AEC-Q100 compliance.
The MAX6765–MAX6774B family was engineered specifically for automotive micropower regulation with integrated supervision - targeting always-on modules needing ultra-low IQ, wide VIN, and fail-safe reset/watchdog functionality.
FAQ
What is the exact reset threshold voltage for MAX6773TALD2+T?
The MAX6773TALD2+T has a fixed reset threshold of 4.625V (TAL suffix), meaning the active-low RESET output asserts when the regulated 5.0V output falls below this value. This threshold is factory-trimmed and guaranteed across –40°C to +125°C, with ±125mV tolerance (4.500V to 4.750V) per datasheet Table 1.
Does MAX6773TALD2+T support adjustable output voltage?
No, MAX6773TALD2+T does not support adjustable output voltage. Its "L" suffix denotes a fixed 5.0V output option. Adjustable output (1.8V–11V) is only available on variants with SET pin functionality (e.g., MAX6774TxxxDx+T), whereas MAX6773TALD2+T uses internal feedback and requires SET tied to GND.
What is the watchdog timeout period of MAX6773TALD2+T?
The MAX6773TALD2+T features a watchdog timeout period of 1.6s (typical), with guaranteed range of 1.12s to 2.08s across temperature and process variation. This timeout is non-disableable and triggers RESET assertion if the WDI pin remains static (high or low) beyond this duration.
Can MAX6773TALD2+T be used in non-automotive applications?
Yes, MAX6773TALD2+T can be used in industrial or telecom applications requiring high-input-voltage LDOs with supervision, but its AEC-Q100 qualification, –40°C to +125°C rating, and 72V absolute max input make it especially suited for automotive. Non-automotive users benefit from its robustness but should verify RESET timing and watchdog behavior against their specific µP requirements.
What package type and thermal performance does MAX6773TALD2+T use?
MAX6773TALD2+T uses a 6-pin TDFN-EP package (3mm × 3mm, outline 21-0137). With EP soldered to PCB ground, its junction-to-ambient thermal resistance is 42°C/W on a multilayer board, enabling 1.9W continuous power dissipation at +70°C ambient - sufficient for 100mA at 5V output even under high VIN conditions.
MAX6773TALD2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6773TALD2+T FAQ
1.How can I place an order for MAX6773TALD2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6773TALD2+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 MAX6773TALD2+T reliable?
The price and inventory of MAX6773TALD2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6773TALD2+T is usually 5 days.
3.What payment methods are accepted for MAX6773TALD2+T?
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MAX6773TALD2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6773TALD2+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 MAX6773TALD2+T?
For technical support, including MAX6773TALD2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6773TALD2+T requirements.
6.How does Aetrix verify that MAX6773TALD2+T is sourced from the original manufacturer or authorized distributors?
All MAX6773TALD2+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 MAX6773TALD2+T meets industry standards.
7.What is the process for return or replacement of MAX6773TALD2+T?
All MAX6773TALD2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6773TALD2+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 MAX6773TALD2+T part is unused and in its original packaging.
Return procedure for MAX6773TALD2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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