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Analog Devices Inc./Maxim Integrated MAX6768TASD2+
- Part No.:
- MAX6768TASD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6768TASD2+.pdf
- Description:
- POWER SUPPLY SUPPORT CIRCUIT, AD
- Quantity:
- Payment:
- Shipping:
Inventory:1,766
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Product details
Overview
MAX6768TASD2+ from Maxim Integrated is an automotive-grade micropower linear regulator with integrated supervisor and HOLD functionality, delivering up to 100mA at 3.3V output from 4V–72V input, featuring 31µA quiescent current, open-drain RESET with 12.5ms timeout, and thermal/short-circuit protection for always-on vehicle modules.
For engineers reviewing the MAX6768TASD2+ datasheet, MAX6768TASD2+ pinout, MAX6768TASD2+ application, or MAX6768TASD2+ equivalent, key selection criteria include its dual-enable hold architecture, fixed 3.3V output with 3.353V reset threshold, 6-pin TDFN-EP package, -40°C to +125°C operation, and compatibility with automotive power sequencing requirements.
Technical Context
The MAX6768TASD2+ implements a high-voltage linear regulation architecture with internal 1.233V reference and dual-mode enable logic: ENABLE (active-high) initiates regulation, while HOLD (active-low) latches the output ON even after ENABLE is deasserted-enabling self-holding without external components. Its supervisor circuit monitors OUT voltage against a fixed 3.353V reset threshold and asserts open-drain RESET for 12.5ms after recovery.
It integrates overtemperature shutdown (160°C trip, 20°C hysteresis), short-circuit current limiting (150–250mA), and output overvoltage protection (107–113% of VOUT). The device uses a thermally enhanced 3mm × 3mm TDFN-EP package rated for 1.951W dissipation at TA ≤ +70°C, supporting continuous operation under high ambient, high VIN, and full-load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 72V - supports direct connection to automotive battery (cold-crank down to 4V, load-dump up to 72V) |
| Output Voltage | Fixed 3.3V ±2.5% - stable supply for automotive microcontrollers and CAN transceivers |
| Quiescent Current | 31µA typical at no load - enables <100µA system standby current in always-on modules |
| Reset Threshold | 3.353V (T option) - triggers RESET when 3.3V rail drops below 3.353V × 0.925 = 3.102V (min) |
| Reset Timeout | 12.5ms (D2 option) - ensures µP reset pulse meets minimum assertion time for reliable boot initialization |
| Dropout Voltage | 866mV at 100mA - allows regulation down to VIN = 4.166V while maintaining 3.3V output |
| Operating Temp | -40°C to +125°C - fully specified for under-hood automotive environments |
Pinout & Package
MAX6768TASD2+ is housed in a thermally enhanced 6-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) connected internally to GND. The EP must be soldered to PCB ground plane for optimal thermal performance (1.951W max dissipation at TA ≤ +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Accepts 4V–72V unregulated supply; requires ≥0.1µF bypass capacitor to GND |
| 2 GND | Ground Reference | Power and signal return; connects to EP for thermal path |
| 3 ENABLE | Active-High Enable | Drives high to start regulation; internally pulled down (0.6µA sink) when floating |
| 4 RESET | Active-Low Open-Drain Reset Output | Asserts low during undervoltage or watchdog timeout; requires external pullup for µP reset interface |
| 5 TIMEOUT | Reset Timeout Adjustment | Connected to OUT for fixed 12.5ms timeout (D2); capacitor to GND enables adjustable timing |
| 6 OUT | Regulated Output | Delivers up to 100mA at 3.3V; requires ≥10µF output capacitor (ESR < 0.5Ω) for stability |
Key Features
| Feature | Design Value |
|---|---|
| HOLD Input with Latching Logic | Enables self-holding circuit: pulling HOLD low after ENABLE activation maintains regulation even if ENABLE returns low-no external latch components required |
| Automotive Temperature Grade | Qualified per AEC-Q100; fully specified from -40°C to +125°C junction temperature for under-hood deployment |
| Low Quiescent Current | 31µA typical supply current enables compliance with ISO 16750-2 "parking mode" current budgets (<100µA) |
| Integrated Protection | Thermal shutdown (160°C), short-circuit current limit (150–250mA), and output overvoltage clamp (107–113% of VOUT) |
| Fixed Reset Threshold & Timeout | 3.353V reset threshold (T option) and 12.5ms timeout (D2) eliminate external resistor/capacitor tuning for standard µP reset timing |
Applications
| Body Control Module (BCM) | Infotainment Power Supply |
|---|---|
|
Use Scenario: Provides always-on 3.3V supply to microcontroller and CAN transceiver in vehicle door module, surviving cold-crank (4V) and load-dump (72V) events. IC Role / Device Role / Timing Role: Primary LDO regulator with supervisor; RESET asserts during brownout to force controlled µP reboot before firmware corruption. Use Value: 31µA quiescent current prevents battery drain during weeks-long parking; HOLD latching eliminates need for external wake-up controller. |
Use Scenario: Powers audio DSP and display interface ICs in head-unit, requiring clean, stable 3.3V rail with guaranteed reset during ignition cycling. IC Role / Device Role / Timing Role: System supervisor and post-regulator; RESET provides 12.5ms pulse to synchronize boot sequence across multiple subsystems. Use Value: Fixed 3.353V reset threshold ensures reset occurs before 3.3V rail falls below µP VDD min spec (3.135V); dropout voltage supports operation down to 4.166V input. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
|
Use Scenario: Supplies 3.3V to LTE modem and GNSS receiver in cellular-connected TCU, operating continuously during vehicle sleep states. IC Role / Device Role / Timing Role: Always-on power manager with latch-hold capability; ENABLE driven by ignition signal, HOLD asserted by µP to maintain power during CAN bus wake events. Use Value: HOLD input enables autonomous power retention during CAN frame reception without µP intervention-reducing latency and MCU wake cycles. |
Use Scenario: Powers image signal processor and radar interface in front-camera ECU, where thermal robustness and supply integrity are critical for functional safety. IC Role / Device Role / Timing Role: Safety-relevant power supervisor; thermal shutdown (160°C) and short-circuit protection prevent fault propagation in sealed enclosures. Use Value: 1.951W thermal rating in 3mm × 3mm TDFN-EP allows full 100mA load at +105°C ambient-meeting ASIL-B thermal derating requirements. |
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 |
|---|---|---|---|
| MAX6767TASD2+ | Same pinout, same 3.3V output and D2 timeout, but lacks HOLD input-uses only ENABLE for on/off control | No self-holding capability; requires external circuitry or µP GPIO to maintain power during ENABLE removal | Select when simplified enable logic suffices and HOLD functionality is unnecessary |
| TLV70733PDQNR | Lower input range (2.5V–5.5V), no RESET output, no HOLD, 250mA output, SOT-23-5 package | Not suitable for automotive battery-direct applications; lacks supervision and high-temp qualification | Select only for low-voltage, non-automotive, cost-sensitive consumer applications without reset or hold needs |
Compared with MAX6767TASD2+, the MAX6768TASD2+ adds HOLD latching for autonomous power retention-critical for CAN wake and low-power telematics. Compared with TLV70733PDQNR, it supports full automotive voltage transients, includes supervisor functions, and operates across the full AEC-Q100 temperature range.
Availability
MAX6768TASD2+ is available at Aetrix Electronics and suitable for automotive body electronics, infotainment systems, and telematics modules requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for MAX6768TASD2+ 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–MAX6774 family was engineered specifically for automotive always-on modules-delivering ultra-low quiescent current, wide-input regulation, integrated supervision, and robust thermal performance in compact packages.
FAQ
What is the function of the HOLD pin on the MAX6768TASD2+?
The HOLD pin on the MAX6768TASD2+ is an active-low input that enables self-holding behavior: when pulled low after ENABLE is asserted, it latches the regulator ON even if ENABLE subsequently goes low. Releasing HOLD shuts down the output. This eliminates external latch circuitry in automotive wake-up architectures. The MAX6768TASD2+ uses this feature to sustain power during CAN bus activity without continuous ENABLE assertion.
Does the MAX6768TASD2+ include a watchdog timer?
No, the MAX6768TASD2+ does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6773/MAX6773B/MAX6774/MAX6774B variants in the family. The MAX6768TASD2+ belongs to the MAX6767/MAX6768 subgroup, which features HOLD input and adjustable output capability-but no WDI pin or watchdog timeout circuitry. Its supervisor function is limited to VOUT monitoring and RESET assertion.
What is the reset threshold voltage for MAX6768TASD2+?
The MAX6768TASD2+ has a fixed reset threshold of 3.353V (denoted by the "T" suffix), meaning RESET asserts when the regulated 3.3V output falls below this value. The actual trip point is guaranteed between 3.251V and 3.350V over temperature and load. This threshold ensures RESET activates before the 3.3V rail drops below the minimum valid VDD for most automotive microcontrollers (typically 3.135V).
Can the output voltage of MAX6768TASD2+ be adjusted?
No, the MAX6768TASD2+ provides a fixed 3.3V output. Although it belongs to the MAX6767–MAX6774 series-which supports adjustable outputs via the SET pin-the "T" suffix and part number structure confirm it is configured for fixed 3.3V operation. The SET pin is internally connected to generate the preset voltage; external resistors are not used. For adjustable output, select MAX6767xxx or MAX6768xxx with "A" or "B" suffixes indicating adjustable mode.
What package type and thermal performance does MAX6768TASD2+ use?
The MAX6768TASD2+ uses a 6-pin TDFN-EP package (3mm × 3mm) with exposed pad (EP) internally tied to GND. When soldered to a 1in² 2oz copper ground plane, it achieves 1.951W maximum power dissipation at TA ≤ +70°C, derating linearly above that temperature. This enables continuous 100mA output at 3.3V even under high ambient (+105°C) and high input voltage (42V) conditions-critical for under-hood automotive reliability.
MAX6768TASD2+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Regulator/Supervisor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.888V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 8.75ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (3x3)
MAX6768TASD2+ FAQ
1.How can I place an order for MAX6768TASD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6768TASD2+ 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 MAX6768TASD2+ reliable?
The price and inventory of MAX6768TASD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6768TASD2+ is usually 5 days.
3.What payment methods are accepted for MAX6768TASD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6768TASD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6768TASD2+?
MAX6768TASD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6768TASD2+ 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 MAX6768TASD2+?
For technical support, including MAX6768TASD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6768TASD2+ requirements.
6.How does Aetrix verify that MAX6768TASD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6768TASD2+ 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 MAX6768TASD2+ meets industry standards.
7.What is the process for return or replacement of MAX6768TASD2+?
All MAX6768TASD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6768TASD2+, 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 MAX6768TASD2+ part is unused and in its original packaging.
Return procedure for MAX6768TASD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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