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Analog Devices Inc./Maxim Integrated MAX6774TALD2+
- Part No.:
- MAX6774TALD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6774TALD2+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,956
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Product details
Overview
MAX6774TALD2+ from Maxim Integrated is an automotive-grade micropower linear regulator with integrated supervisor and watchdog timer, delivering up to 100mA at fixed 5.0V output (L-suffix), operating from 4V to 72V input, featuring 38µA quiescent current, open-drain active-low RESET, and 12.5ms fixed reset timeout (D2 suffix). It is designed for always-on vehicle modules requiring reliable power sequencing and microprocessor supervision.
For engineers reviewing the MAX6774TALD2+ datasheet, MAX6774TALD2+ pinout, MAX6774TALD2+ application, or MAX6774TALD2+ equivalent, key selection criteria include its AEC-Q100 qualification, -40°C to +125°C operation, 620mV dropout at 100mA, watchdog timeout of 1.6s (typ), and compatibility with high-ambient automotive power domains.
Technical Context
The MAX6774TALD2+ integrates a high-voltage linear regulator with a precision 1.233V internal reference, a comparator-based RESET circuit with factory-trimmed 4.625V threshold (L option), and a 1.6s watchdog timer monitoring WDI transitions. Its enable logic is single-input (ENABLE pin), and it lacks HOLD or dual-enable functionality - distinguishing it from MAX6767/MAX6771 variants.
It uses a push-pull or open-drain RESET output (configurable via part variant; TALD2+ is open-drain per pinout and functional diagram), supports capacitor-adjustable reset timeout via TIMEOUT pin, and includes overtemperature shutdown (160°C) and short-circuit protection. The device operates in preset 5.0V mode (SET tied to GND) and does not support adjustable output voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 72V - supports full automotive battery range including cold-crank (4.5V) and load-dump (up to 72V transient). |
| Output Voltage | 5.0V ±1.5% (4.925V–5.075V) - factory-trimmed fixed output, stable across -40°C to +125°C. |
| Quiescent Current | 38µA (typ) at no load - enables >10-year battery life in always-on telematics or body-control modules. |
| Dropout Voltage | 620mV at 100mA (VIN = 11V) - ensures regulation down to 5.62V input, critical during engine cranking. |
| RESET Threshold | 4.625V (L option, falling edge) - asserts RESET when VOUT drops below 92.5% of nominal, preventing MCU operation in brownout. |
| Watchdog Timeout | 1.6s (typ), non-disableable - detects µP lockup in infotainment or ADAS ECUs without external timing components. |
| Reset Timeout | 12.5ms (D2 option, fixed) - guarantees minimum reset pulse width compliant with ARM Cortex-M and Renesas RH850 MCUs. |
Pinout & Package
MAX6774TALD2+ is housed in a thermally enhanced 6-pin 3mm × 3mm TDFN-EP package (exposed pad soldered to PCB ground plane), rated for 1.951W dissipation at TA ≤ +70°C and derated above.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Accepts 4V–72V unregulated supply; requires ≥0.1µF ceramic bypass to GND for stability. |
| 2 GND | Ground Reference | Primary return path for regulator, RESET, and ENABLE; connects internally to exposed pad (EP). |
| 3 ENABLE | Active-High Enable Input | Drives regulator ON/OFF; internally pulled down (0.6µA sink); logic-high ≥1.4V required. |
| 4 RESET | Active-Low Open-Drain Reset Output | Asserts low during VOUT undervoltage or WDI timeout; requires external pull-up to host MCU VDD. |
| 5 TIMEOUT | Reset Timeout Adjustment | Connected to OUT for fixed 12.5ms timeout (D2); floating or capacitor-to-GND enables adjustment. |
| 6 OUT | Regulated 5.0V Output | Delivers up to 100mA; requires ≥10µF ceramic output capacitor; monitored by internal supervisor. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Rated for automotive Grade 0 (-40°C to +125°C junction), ensuring reliability in under-hood and dashboard applications. |
| Integrated Watchdog Timer | 1.6s timeout (non-disableable) monitors µP activity via WDI pin, eliminating need for external watchdog IC in ECU designs. |
| Low Dropout & High PSRR | 620mV dropout at 100mA and 70dB PSRR at 100Hz enable clean 5V rail despite noisy alternator ripple. |
| Robust Protection Suite | Includes thermal shutdown (160°C), short-circuit current limiting (150–250mA), and output overvoltage protection (107–113% VOUT). |
| Factory-Trimmed Precision | ±1.5% output voltage accuracy and ±2.5% RESET threshold tolerance reduce calibration overhead in production test. |
Applications
| Automotive Body Control Module (BCM) | Automotive Telematics Control Unit (TCU) |
|---|---|
Use Scenario: Powering CAN transceivers, LIN gateways, and door-lock MCUs in always-on sleep mode. IC Role / Device Role / Timing Role: Primary 5V LDO with supervisor; provides regulated rail and system reset during ignition-off battery monitoring. Use Value: 38µA quiescent current prevents excessive parasitic drain; 12.5ms RESET ensures deterministic MCU boot after wake-up interrupt. |
Use Scenario: Supplying GPS/GNSS receiver, cellular modem, and secure element in connected car platforms. IC Role / Device Role / Timing Role: Supervised 5V regulator with watchdog; monitors modem firmware execution and triggers recovery on hang. Use Value: 1.6s watchdog timeout aligns with LTE modem keep-alive intervals; open-drain RESET interfaces directly with 3.3V/5V µP reset inputs. |
| Industrial Vehicle Telematics | Railway Onboard Control System |
Use Scenario: Powering GNSS tracking and fleet-management MCUs in heavy-duty trucks with wide battery variation. IC Role / Device Role / Timing Role: High-input-voltage LDO with brownout detection; maintains valid 5V rail during 6V cold-crank and 36V load-dump events. Use Value: 4V–72V input range eliminates need for pre-regulator stage; 72V absolute max rating withstands ISO 7637-2 pulse 5a transients. |
Use Scenario: Regulating 5V for safety-critical train control logic in EN 5012x-compliant systems. IC Role / Device Role / Timing Role: AEC-Q100 qualified supervisor LDO; delivers fault-tolerant power with thermal shutdown and watchdog supervision. Use Value: -40°C to +125°C operation meets EN 50121-3-2 ambient requirements; 160°C thermal shutdown prevents latch-up during convection-limited enclosure operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar micropower supervisory regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6773TALD2+ | Identical pinout, specs, and features except watchdog timeout is 1.6s (same), but lacks WDI pin function - no watchdog capability. | Suitable where only power-supervision (not µP health monitoring) is required; lower BOM cost if watchdog is unused. | Select MAX6773TALD2+ only if watchdog timer is unnecessary; MAX6774TALD2+ adds WDI-driven reset without layout change. |
| TPS7B7702QPWPRQ1 | 40µA IQ, 4V–40V input, 5V fixed, but no integrated watchdog; RESET threshold adjustable via external resistor; 200ms min timeout only. | Requires external RC network for reset timing and resistor divider for threshold setting - increases design complexity and footprint. | Choose TPS7B7702QPWPRQ1 only when TI's automotive qualification and 40V max input suffice and watchdog is handled externally. |
Compared with MAX6773TALD2+, MAX6774TALD2+ adds essential WDI-based watchdog supervision without altering pinout or power specs; versus TPS7B7702QPWPRQ1, it offers tighter RESET threshold tolerance, factory-set timing, and broader 72V input capability - reducing validation effort in high-transient automotive environments.
Availability
MAX6774TALD2+ is available at Aetrix Electronics and suitable for automotive body electronics, telematics control units, and industrial vehicle tracking systems requiring stable component supply across extended temperature and high-reliability lifecycles.
Supply support for MAX6774TALD2+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX6765–MAX6774B family was engineered specifically for automotive power-supervision applications, combining ultra-low IQ, wide-input operation, and integrated watchdog/reset functions to replace discrete supervisor + LDO solutions in ECUs.
FAQ
What is the watchdog timeout period of the MAX6774TALD2+?
The MAX6774TALD2+ features a non-disableable watchdog timer with a typical timeout period of 1.6 seconds. This value is specified in the Electrical Characteristics table (tWD parameter) and applies across the full -40°C to +125°C operating range. The watchdog asserts the RESET output if the WDI pin remains static (high or low) beyond this interval, ensuring recovery from microprocessor lockup in automotive ECUs.
Does the MAX6774TALD2+ support adjustable output voltage?
No, the MAX6774TALD2+ does not support adjustable output voltage. Its "L" suffix denotes a factory-trimmed fixed 5.0V output. The SET pin is internally connected for preset operation and must be tied to GND; using external resistors to configure an adjustable output is not supported for this specific variant. Only MAX6767–MAX6774B parts with "A" or "B" suffixes and non-L/M/T/S/Z/W/V output codes enable adjustable mode.
What is the RESET output type on the MAX6774TALD2+?
The MAX6774TALD2+ features an active-low open-drain RESET output. As confirmed in the Pin Description table and Functional Diagram (page 13), RESET is open-drain - requiring an external pull-up resistor to the host microcontroller's VDD rail. This configuration allows wired-OR reset signaling across multiple supervisors and supports level-shifting between different logic families.
Is the MAX6774TALD2+ AEC-Q100 qualified?
Yes, the MAX6774TALD2+ is AEC-Q100 qualified. Per the Ordering Information table and Applications section, MAX6774TA_D_/V+ variants (including MAX6774TALD2+) are explicitly listed as AEC-Q100 qualified. This certification covers stress testing for temperature cycling, humidity, ESD, and lifetime reliability - confirming suitability for automotive front-end, body, and powertrain control modules.
What is the maximum continuous output current of the MAX6774TALD2+?
The MAX6774TALD2+ guarantees a continuous output current of 100mA under all operating conditions. This is specified as "Guaranteed Output Current" in the Electrical Characteristics table. Actual deliverable current depends on thermal limits: at TA = +70°C, the 3mm × 3mm TDFN package supports up to 1.951W dissipation, allowing full 100mA across the full input range only when VIN − VOUT ≤ 19.5V; higher differentials require derating.
MAX6774TALD2+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tray
- 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:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX6774TALD2+ FAQ
1.How can I place an order for MAX6774TALD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6774TALD2+ 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 MAX6774TALD2+ reliable?
The price and inventory of MAX6774TALD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6774TALD2+ is usually 5 days.
3.What payment methods are accepted for MAX6774TALD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6774TALD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6774TALD2+?
MAX6774TALD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6774TALD2+ 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 MAX6774TALD2+?
For technical support, including MAX6774TALD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6774TALD2+ requirements.
6.How does Aetrix verify that MAX6774TALD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6774TALD2+ 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 MAX6774TALD2+ meets industry standards.
7.What is the process for return or replacement of MAX6774TALD2+?
All MAX6774TALD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6774TALD2+, 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 MAX6774TALD2+ part is unused and in its original packaging.
Return procedure for MAX6774TALD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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