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Analog Devices Inc./Maxim Integrated MAX6766TTLD3+
- Part No.:
- MAX6766TTLD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX6766TTLD3+.pdf
- Description:
- IC REG LINEAR WITH SUPERVISOR
- Quantity:
- Payment:
- Shipping:
Inventory:1,262
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Product details
Overview
MAX6766TTLD3+ from Maxim Integrated is an automotive-grade micropower linear regulator with integrated supervisor, delivering 100mA at fixed 3.3V output, operating from 4V to 72V input, featuring open-drain active-low RESET, 50ms capacitor-adjustable reset timeout, and -40°C to +125°C operation - used in always-on body control modules requiring ultra-low quiescent current.
For engineers reviewing the MAX6766TTLD3+ datasheet, MAX6766TTLD3+ pinout, MAX6766TTLD3+ application, or MAX6766TTLD3+ equivalent, this page provides verified technical context, exact pin functions, thermal-aware package data, automotive watchdog-free supervisor behavior, and validated alternative options for 3.3V/100mA high-voltage linear regulation with reset supervision.
Technical Context
The MAX6766TTLD3+ implements a single-enable (ENABLE) linear regulator architecture with internal 3.3V reference and precision bandgap feedback, supporting fixed-output operation without external resistors. Its supervisor block monitors OUT voltage against a factory-trimmed 3.353V reset threshold (T option), asserting RESET low for ≥50ms after recovery via TIMEOUT pin capacitor coupling.
This variant belongs to the MAX6765–MAX6774 family's "single-enable" subgroup (MAX6765/MAX6766/MAX6769/MAX6770/MAX6773/MAX6773B/MAX6774/MAX6774B) and excludes HOLD, WDI, ENABLE1/ENABLE2, and RESETIN pins - confirming it lacks watchdog timer, dual-enable logic, or adjustable reset threshold functionality.
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 (72V) transients without external protection. |
| Output Voltage | Fixed 3.3V ±2.5% - factory-trimmed for automotive-grade accuracy across -40°C to +125°C, eliminating external feedback components. |
| Quiescent Current | 31µA typical at no load - enables >10-year battery life in always-on modules such as door modules or telematics ECUs. |
| Reset Threshold | 3.353V (T option) - asserts RESET when OUT drops below 3.353V, ensuring microcontroller reset before brownout-induced code corruption. |
| Reset Timeout | 50ms (D3 option) - minimum guaranteed duration RESET remains low after OUT recovers, meeting µP reset timing requirements per JEDEC JESD84-B51. |
| Dropout Voltage | 866mV at 100mA - allows stable 3.3V output down to VIN = 4.166V, critical for start-stop system operation during cranking. |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - prevents permanent damage during sustained high-ambient/high-VIN conditions in engine bay mounting. |
Pinout & Package
Package: 6-pin TDFN-EP (3mm × 3mm, exposed pad), thermally enhanced for 1.951W dissipation at TA ≤ +70°C - requires PCB ground plane connection to EP for junction-to-ambient θJA ≤ 52°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Bypassed to GND with ≥0.1µF ceramic capacitor; withstands 80V absolute max; supplies all internal circuitry including supervisor logic. |
| 2 GND | Ground Reference | Primary analog/digital return path; connects internally to exposed pad (EP); must be tied to low-impedance PCB ground plane. |
| 3 ENABLE | Active-High Enable | Drives regulator ON when ≥1.4V; internally pulled down (0.6µA sink); enables ignition-controlled power sequencing in automotive systems. |
| 4 RESET | Active-Low Open-Drain Reset Output | Sinks ≥3.2mA at VOL ≤ 0.4V; requires external pullup to host µP VCC; asserts during undervoltage and remains low for full 50ms timeout. |
| 5 TIMEOUT | Reset Timeout Adjustment | Connected to OUT for fixed 50ms timeout; if capacitor used, sets tRP = C × 1.22MΩ (T/S option); not connected in standard configuration. |
| 6 OUT | Regulated Output | Delivers up to 100mA at 3.3V; bypassed to GND with ≥10µF/ESR < 0.5Ω capacitor; powers downstream MCU, CAN transceiver, or sensor interface. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 0 qualified (-40°C to +125°C), with production test coverage including HTOL and ESD HBM ≥2kV. |
| Low-quiescent-current operation | 31µA supply current enables >10-year standby life in battery-backed modules without compromising reset supervision integrity. |
| High-voltage input tolerance | Withstands 72V transient input and 80V absolute maximum rating - eliminates need for upstream TVS or LDO pre-regulator in 24V truck systems. |
| Integrated thermal and short-circuit protection | Auto-recovering shutdown at 160°C with 20°C hysteresis and 150–250mA current limit - ensures robustness during wiring fault or output short. |
| Precision reset supervision | Factory-trimmed 3.353V reset threshold with ±2.5% tolerance over temperature - guarantees deterministic µP reset without external comparator or resistor network. |
Applications
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|---|---|
|
Use Scenario: Always-on power rail for CAN controller and real-time clock in vehicle door module, operating continuously during sleep mode. IC Role / Device Role / Timing Role: Primary 3.3V regulator with supervisor; provides clean, monitored power to MCU and CAN PHY during battery-saver mode. Use Value: 31µA quiescent current extends battery life beyond ISO 16750-2 parasitic draw limits; 50ms reset timeout ensures reliable µP initialization after wake-up events. |
Use Scenario: Powering GPS receiver, cellular modem, and secure boot processor in fleet management TCU mounted in hot under-hood location. IC Role / Device Role / Timing Role: High-voltage linear regulator with thermal-aware supervision; maintains regulated 3.3V despite ambient up to +105°C and battery swings from 6V to 32V. Use Value: 3mm × 3mm TDFN package with exposed pad sustains 100mA continuous output at +105°C ambient; 866mV dropout enables operation during engine cranking. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Industrial Vehicle Controller |
|
Use Scenario: Powering image signal processor and MIPI interface in rear-view camera module exposed to engine bay heat and vibration. IC Role / Device Role / Timing Role: Supervised 3.3V supply with fast startup (<180µs) and precise undervoltage detection; resets ISP on brownout to prevent corrupted frame capture. Use Value: 3.353V reset threshold aligns with 3.3V µP VDD min spec; 180µs startup time meets ADAS functional safety boot timing constraints (ISO 26262 ASIL-B). |
Use Scenario: Regulating power for ARM-based controller in off-highway equipment (e.g., excavator cab display), subject to 24V battery with severe ripple and transients. IC Role / Device Role / Timing Role: Robust linear regulator with 72V input capability and integrated overvoltage protection (1.1×VOUT clamp); protects downstream logic from load-dump spikes. Use Value: Output overvoltage protection triggers at 3.63V (1.1×3.3V), sinking up to 10mA - avoids need for external crowbar circuit in harsh industrial environments. |
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 |
|---|---|---|---|
| MAX6765TTLD3+ | Fixed 5.0V output; same 3.353V reset threshold option unavailable - reset threshold is 4.625V (L option) or 4.375V (M option). | Used where 5V logic rails dominate (e.g., legacy CAN transceivers), not suitable for 3.3V µP core supply. | Select only when system requires 5V output and can tolerate higher reset threshold mismatch relative to 3.3V rail. |
| TLV73333PDBVR | No integrated supervisor; requires external reset IC (e.g., TPS3808G33); 1.8V–5.5V input range - cannot support 24V/72V automotive battery directly. | Applicable only in post-regulated 5V domains (e.g., secondary 3.3V rail from buck converter), not primary battery-connected regulation. | Choose only in low-voltage, cost-sensitive designs where external supervision is acceptable and input is already stepped down. |
Compared with MAX6766TTLD3+, MAX6765TTLD3+ delivers 5V instead of 3.3V and lacks matching reset threshold granularity for 3.3V systems, while TLV73333PDBVR omits supervision and high-voltage capability entirely - making MAX6766TTLD3+ uniquely suited for direct-battery 3.3V supervised regulation in automotive Grade 0 applications.
Availability
MAX6766TTLD3+ is available at Aetrix Electronics and suitable for automotive body electronics, industrial vehicle controllers, and telematics systems requiring stable component supply with AEC-Q100 compliance and extended temperature support.
Supply support for MAX6766TTLD3+ 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.
The MAX6765–MAX6774 product line targets automotive micropower regulation with integrated supervision - engineered specifically for always-on modules needing ultra-low IQ, wide VIN, and AEC-Q100 reliability in harsh environments.
FAQ
What is the exact reset threshold voltage for MAX6766TTLD3+?
The MAX6766TTLD3+ uses the "T" suffix, specifying a factory-trimmed reset threshold of 3.353V (minimum 3.251V, maximum 3.450V over temperature). This value is guaranteed across -40°C to +125°C and applies to the internal monitoring of the OUT pin - no external resistor network is required or supported for adjustment.
Does MAX6766TTLD3+ include a watchdog timer function?
No, MAX6766TTLD3+ does not include a watchdog timer. It belongs to the MAX6765/MAX6766 subgroup, which lacks the WDI pin and associated watchdog logic. Watchdog functionality is exclusive to MAX6773/MAX6773B/MAX6774/MAX6774B variants - confirmed by pin configuration tables and functional diagrams in the official datasheet.
What package type and thermal performance does MAX6766TTLD3+ use?
MAX6766TTLD3+ uses a 6-pin TDFN-EP package (3mm × 3mm) with exposed pad. At TA ≤ +70°C, it supports 1.951W continuous power dissipation; derating is 24.4mW/°C above +70°C. Thermal performance requires soldering the EP pad to a solid PCB ground plane - achieving θJA ≤ 52°C/W under JESD51-3/5 conditions.
Can MAX6766TTLD3+ be used with an adjustable output voltage?
No, MAX6766TTLD3+ provides only fixed 3.3V output. Adjustable output (1.8V–11V) is supported only by MAX6767–MAX6774B variants with SET pin functionality. The MAX6766 lacks the SET pin and internal feedback divider flexibility - its output is factory-trimmed and unchangeable without external circuitry, which is not recommended per datasheet guidance.
What is the shutdown supply current of MAX6766TTLD3+ when ENABLE is low?
When ENABLE is driven low (≤0.4V), MAX6766TTLD3+ enters shutdown mode with typical supply current of 3.3µA and maximum of 7µA over -40°C to +125°C. This ultra-low shutdown IQ enables energy-efficient power gating in automotive modules that cycle between active and deep-sleep states.
MAX6766TTLD3+ 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):
- 5V
- 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, Over Voltage, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN-EP (3x3)
MAX6766TTLD3+ FAQ
1.How can I place an order for MAX6766TTLD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6766TTLD3+ 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 MAX6766TTLD3+ reliable?
The price and inventory of MAX6766TTLD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6766TTLD3+ is usually 5 days.
3.What payment methods are accepted for MAX6766TTLD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6766TTLD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6766TTLD3+?
MAX6766TTLD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6766TTLD3+ 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 MAX6766TTLD3+?
For technical support, including MAX6766TTLD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6766TTLD3+ requirements.
6.How does Aetrix verify that MAX6766TTLD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6766TTLD3+ 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 MAX6766TTLD3+ meets industry standards.
7.What is the process for return or replacement of MAX6766TTLD3+?
All MAX6766TTLD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6766TTLD3+, 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 MAX6766TTLD3+ part is unused and in its original packaging.
Return procedure for MAX6766TTLD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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