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Analog Devices Inc./Maxim Integrated MAX6766TTSD2+
- Part No.:
- MAX6766TTSD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX6766TTSD2+.pdf
- Description:
- IC REG LINEAR 3.3V 100MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:138
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Product details
Overview
MAX6766TTSD2+ from Maxim Integrated is an automotive-grade micropower linear regulator with integrated supervisor, delivering 3.3V fixed output at up to 100mA from 4V–72V input. It features open-drain active-low RESET, 12.5ms fixed reset timeout (D2), and operates across –40°C to +125°C - designed for always-on vehicle modules such as body control units and infotainment power rails.
For engineers reviewing the MAX6766TTSD2+ datasheet, MAX6766TTSD2+ pinout, MAX6766TTSD2+ application, or MAX6766TTSD2+ equivalent, key selection criteria include its 31µA quiescent current, 866mV dropout at 100mA, thermal shutdown protection, and compatibility with high-ambient automotive environments requiring stable low-power biasing.
Technical Context
The MAX6766TTSD2+ implements a single-enable (ENABLE) linear regulation architecture with internal 1.233V reference and precision feedback comparator. Its RESET circuit monitors OUT voltage against a fixed 3.353V threshold (S option) and asserts for exactly 12.5ms after recovery - determined by internal timing resistor and D2-coded logic.
It integrates overtemperature shutdown (160°C trip, 20°C hysteresis) and short-circuit current limiting (~200mA). The device uses a thermally enhanced 6-pin TDFN-EP package with exposed pad tied to GND, enabling 1.9W dissipation at +70°C ambient.
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 (60V+) |
| Output Voltage | Fixed 3.3V ±2.5% - meets standard microcontroller I/O rail requirements |
| Quiescent Current | 31µA typical at no load - enables >10-year battery standby in always-on modules |
| Dropout Voltage | 866mV at 100mA - allows regulation down to VIN = 4.166V while maintaining 3.3V output |
| Reset Threshold | 3.353V (S option) - asserts RESET when VOUT falls below 3.353V, ensuring clean µP reset before brownout |
| Reset Timeout | 12.5ms (D2 option) - guarantees minimum reset pulse width compliant with ARM Cortex-M and Infineon AURIX MCU specs |
| Operating Temperature | –40°C to +125°C - qualified per AEC-Q100 Grade 0 for under-hood and transmission-control applications |
Pinout & Package
MAX6766TTSD2+ is housed in a 3mm × 3mm, 6-pin TDFN-EP package with exposed thermal pad (EP) soldered to PCB ground plane. This package delivers 1.9W continuous power dissipation at +70°C ambient and supports high-reliability automotive thermal cycling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Bypassed to GND with ≥0.1µF capacitor; accepts 4V–72V unregulated automotive supply |
| 2 GND | Ground Reference | Power and signal return; EP must be connected to same ground plane for thermal performance |
| 3 ENABLE | Active-High Enable | Internally pulled down (0.6µA); drives high to activate regulator; compatible with 3.3V/5V logic |
| 4 RESET | Active-Low Open-Drain Reset Output | Sinks ≥3.2mA at 0.4V; requires external pullup to host µP VCC for proper reset signaling |
| 5 TIMEOUT | Reset Timeout Configuration | Connected internally to set 12.5ms timeout (D2); leave floating or tie to OUT if using fixed mode |
| 6 OUT | Regulated Output | Delivers 3.3V @ ≤100mA; bypassed with ≥10µF/ESR <0.5Ω capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Low-quiescent-current operation | 31µA supply current enables >10-year battery life in telematics and gateway modules |
| Wide-input automotive voltage range | 4V–72V operation covers ISO 7637-2 pulse 4 (cold crank) and pulse 5a (load dump) without external protection |
| Integrated supervisor with precise reset | 3.353V reset threshold and 12.5ms timeout ensure deterministic µP initialization during battery transients |
| Thermal and short-circuit protection | 160°C shutdown with 20°C hysteresis prevents latch-up during sustained overload or high-ambient conditions |
| AEC-Q100 qualified packaging | 6-pin TDFN-EP with exposed pad meets Grade 0 reliability for under-hood deployment |
Applications
| Body Control Module (BCM) | Infotainment Power Supply |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in door module with always-on wake capability. IC Role / Device Role / Timing Role: Primary 3.3V bias regulator with supervisor ensuring safe boot after ignition cycle or battery disconnect. Use Value: 31µA quiescent current prevents parasitic drain; 12.5ms RESET guarantees reliable MCU reset during 12V bus sag. |
Use Scenario: Supplies 3.3V rail to audio DSP and display controller in head unit with extended sleep mode. IC Role / Device Role / Timing Role: Always-on LDO with precise reset monitoring to maintain firmware integrity during stop-start engine cycles. Use Value: 866mV dropout allows regulation down to 4.166V, sustaining operation through cold-crank events without brownout. |
| Telematics Control Unit (TCU) | Transmission Control Unit (TCU) |
Use Scenario: Provides regulated 3.3V to LTE modem and GNSS receiver in cellular-connected vehicle tracking system. IC Role / Device Role / Timing Role: High-voltage input LDO with automotive temperature rating and supervisor for remote firmware update safety. Use Value: –40°C to +125°C operation ensures functionality in trunk-mounted installations; 72V tolerance eliminates need for upstream TVS. |
Use Scenario: Powers 3.3V logic in transmission solenoid driver board exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Thermally robust regulator with integrated thermal shutdown protecting against oil-cooler failure or airflow blockage. Use Value: 1.9W TDFN-EP package dissipates heat without heatsink; 20°C thermal hysteresis prevents oscillation during thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator with supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6765TTLD4+ | 5V fixed output, 4.625V reset threshold, 200ms reset timeout (D4) | Targets 5V µP domains (e.g., legacy ECUs); longer timeout suits slower-boot MCUs | Select when system requires 5V rail and extended reset hold time for FPGA configuration or EEPROM write completion |
| TLV70733PDQNR | 3.3V output, 200mA rating, 25µA IQ, but only 5.5V max input and no supervisor | Lacks RESET, watchdog, or high-voltage capability; limited to low-voltage auxiliary rails | Use only in non-automotive, low-input-voltage subsystems where external reset IC is already present |
Compared with MAX6766TTSD2+, MAX6765TTLD4+ provides higher output voltage and longer reset assertion but sacrifices fast-response suitability for modern low-power MCUs; TLV70733PDQNR offers lower IQ and higher current but cannot replace MAX6766TTSD2+ in automotive 12V/24V systems due to input voltage and supervision limitations.
Availability
MAX6766TTSD2+ is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power management, and telematics control units requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX6766TTSD2+ 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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets.
The MAX6765–MAX6774 family was engineered specifically for automotive micropower biasing with integrated supervision - addressing the need for ultra-low-IQ, high-input-voltage, AEC-Q100-compliant regulators in always-on vehicle networks.
FAQ
What is the exact reset threshold voltage for MAX6766TTSD2+?
The MAX6766TTSD2+ has a fixed reset threshold of 3.353V (S option), meaning the active-low RESET output asserts when the regulated 3.3V output falls below this value. This threshold is trimmed and guaranteed over –40°C to +125°C, ensuring consistent µP reset behavior during battery voltage sags common in automotive start-stop cycles. The MAX6766TTSD2+ does not support adjustable reset thresholds.
Does MAX6766TTSD2+ include a watchdog timer?
No, the MAX6766TTSD2+ does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6773/MAX6773B/MAX6774/MAX6774B variants in the family. The MAX6766TTSD2+ provides only voltage-monitoring supervision - RESET assertion based solely on OUT voltage falling below 3.353V, followed by a fixed 12.5ms timeout period.
What is the maximum allowable load current for MAX6766TTSD2+ at 85°C ambient?
At +85°C ambient, the MAX6766TTSD2+'s maximum allowable power dissipation is 1.9W − (0.0244W/°C × 15°C) = 1.534W. With VIN = 14V and VOUT = 3.3V, the theoretical max load current is IOUT = PDMAX / (VIN − VOUT) = 1.534W / 10.7V ≈ 143mA - but the device is rated for 100mA guaranteed output current. Therefore, the absolute limit remains 100mA regardless of thermal margin, as specified in the Electrical Characteristics table for MAX6766TTSD2+.
Can MAX6766TTSD2+ be used with an adjustable output voltage?
No, MAX6766TTSD2+ is a fixed-output variant (3.3V) and does not support adjustable output. Only MAX6767–MAX6774B devices in the family feature the SET pin for external resistive divider configuration (1.8V–11V). The MAX6766TTSD2+ has internal feedback resistors permanently configured for 3.3V; connecting SET to GND or any other node has no effect on output voltage.
Is the RESET output of MAX6766TTSD2+ push-pull or open-drain?
The MAX6766TTSD2+ features an open-drain RESET output. As confirmed in the Pin Description and Functional Diagram sections, RESET is actively pulled low during assertion but requires an external pullup resistor (typically to the host µP's VCC rail) to achieve high-state logic level. This configuration allows wired-OR reset bus sharing across multiple supervisors - a common requirement in automotive domain controllers using MAX6766TTSD2+.
MAX6766TTSD2+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 72V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 45 µA
- Current - Supply (Max):
- 55 µA
- PSRR:
- 70dB (100Hz)
- Control Features:
- Enable, Reset, Watchdog
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN-EP (3x3)
MAX6766TTSD2+ FAQ
1.How can I place an order for MAX6766TTSD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6766TTSD2+ 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 MAX6766TTSD2+ reliable?
The price and inventory of MAX6766TTSD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6766TTSD2+ is usually 5 days.
3.What payment methods are accepted for MAX6766TTSD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6766TTSD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6766TTSD2+?
MAX6766TTSD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6766TTSD2+ 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 MAX6766TTSD2+?
For technical support, including MAX6766TTSD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6766TTSD2+ requirements.
6.How does Aetrix verify that MAX6766TTSD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6766TTSD2+ 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 MAX6766TTSD2+ meets industry standards.
7.What is the process for return or replacement of MAX6766TTSD2+?
All MAX6766TTSD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6766TTSD2+, 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 MAX6766TTSD2+ part is unused and in its original packaging.
Return procedure for MAX6766TTSD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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