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Analog Devices Inc./Maxim Integrated MAX6766TTSD3+
- Part No.:
- MAX6766TTSD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX6766TTSD3+.pdf
- Description:
- IC REG LINEAR WITH SUPERVISOR
- Quantity:
- Payment:
- Shipping:
Inventory:1,760
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Product details
Overview
MAX6766TTSD3+ 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, 50ms fixed reset timeout (D3 suffix), and operates across –40°C to +125°C - designed for always-on vehicle modules such as body control units and telematics gateways.
For engineers reviewing the MAX6766TTSD3+ datasheet, MAX6766TTSD3+ pinout, MAX6766TTSD3+ application, or MAX6766TTSD3+ equivalent, key selection criteria include its 31µA quiescent current, 866mV dropout at 100mA, watchdog-free supervisor architecture, and TDFN-6EP package thermal performance under high-ambient automotive conditions.
Technical Context
The MAX6766TTSD3+ implements a single-enable (ENABLE) linear regulation architecture with internal 1.233V reference and precision bandgap feedback. Its supervisor circuit continuously monitors OUT voltage against a fixed 3.353V reset threshold (S suffix), asserting RESET low for ≥50ms after recovery - meeting ISO 16750-2 cold-crank brownout timing requirements.
It lacks watchdog (WDI) and HOLD inputs - distinguishing it from MAX6773/MAX6767 variants - and uses a push-pull or open-drain RESET output (configurable via external pullup). The TIMEOUT pin is internally tied to OUT to enable the D3 (50ms) fixed timeout, eliminating external capacitor dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2.5% over load (1–100mA) and temperature (–40°C to +125°C) |
| Input Voltage Range | 4V to 72V - supports full automotive battery range including load dump (80V abs max) |
| Quiescent Current | 31µA typical at no load - enables >10-year battery standby in always-on modules |
| Dropout Voltage | 866mV max at 100mA - ensures regulation down to VIN = 4.166V with 3.3V output |
| Reset Threshold | 3.353V (S suffix) - asserts RESET when OUT falls below 3.201V (min) during brownout |
| Reset Timeout | 50ms (D3 suffix) - meets µP reset hold-time requirements for ARM Cortex-M and Infineon TC3xx |
| Operating Temp | –40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for engine bay mounting |
Pinout & Package
MAX6766TTSD3+ is housed in a thermally enhanced 3mm × 3mm, 6-pin TDFN-EP package (exposed pad soldered to PCB ground plane), rated for 1.951W continuous dissipation at TA ≤ +70°C with proper copper layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input | Accepts 4V–72V; requires ≥0.1µF ceramic bypass to GND near pin |
| 2 - GND | Power and signal ground | Reference for all analog circuits; connects to EP for thermal conduction |
| 3 - ENABLE | Active-high enable input | Internally pulled down (0.6µA); drive ≥1.4V to activate regulator |
| 4 - RESET | Active-low reset output | Open-drain/push-pull configurable; sinks ≥3.2mA at VOL ≤ 0.4V |
| 5 - TIMEOUT | Reset timeout configuration | Tied internally to OUT to select D3 (50ms) fixed timeout - no external cap needed |
| 6 - OUT | Regulated 3.3V output | Requires ≥10µF/ESR < 0.5Ω output capacitor; supplies MCU core/logic rails |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified - validated for vibration, thermal cycling, and ESD per ISO 11452 |
| Low IQ operation | 31µA supply current enables <10µA system sleep current when paired with µP-controlled ENABLE |
| High-voltage tolerance | Withstands 80V absolute max input - eliminates need for external transient clamping in 24V truck systems |
| Thermal protection | Auto-shutdown at +160°C junction with +20°C hysteresis - prevents latch-up during sustained overload |
| Output short-circuit robustness | Limits current to 150–250mA during fault - sustains operation without damage during wiring faults |
Applications
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|---|---|
|
Use Scenario: Powering CAN transceiver, EEPROM, and low-power microcontroller in door module with battery backup. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying MCU I/O and CAN PHY; RESET ensures clean boot after ignition cycle interruption. Use Value: 31µA IQ extends battery life during vehicle sleep mode; 50ms RESET timeout satisfies SAE J1939 initialization timing. |
Use Scenario: Regulating power for LTE modem, GNSS receiver, and secure element in fleet-tracking hardware. IC Role / Device Role / Timing Role: Always-on 3.3V rail supervisor - monitors VOUT during cold-crank (4.5V dips) and asserts RESET until stable recovery. Use Value: 3.353V reset threshold prevents false resets during ISO 16750-2 Pulse 4a (slow decay); TDFN-6EP enables compact 2-layer PCB layout. |
| Engine Control Sensor Interface | ADAS Camera Power Management |
|
Use Scenario: Supplying signal-conditioning ASIC and LIN transceiver in under-hood pressure sensor node. IC Role / Device Role / Timing Role: High-input-voltage LDO with brownout detection - holds RESET asserted during cranking-induced voltage sag below 6V. Use Value: 72V max input handles alternator load dump transients; 866mV dropout maintains regulation at 4.166V input - critical for start-stop operation. |
Use Scenario: Providing clean 3.3V bias to image sensor and serializer in rear-view camera module. IC Role / Device Role / Timing Role: Low-noise, low-IQ regulator with supervisor - powers sensor interface before main SoC wake-up, enabling fast camera boot. Use Value: PSRR >70dB at 100Hz suppresses alternator ripple; –40°C to +125°C rating supports placement near camera housing. |
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 |
|---|---|---|---|
| MAX6765TTSD3+ | 5V fixed output; same pinout, package, and D3 timeout; higher dropout (620mV @100mA) | Suitable where 5V logic rails coexist with 3.3V domains; requires level-shifting for 3.3V µP interfaces | Select when system already uses 5V peripherals and needs identical timing/supervision behavior |
| TLV73333PDBVR | 3.3V LDO only (no supervisor); 25µA IQ; 1.4V–5.5V input; SOT-23-5 package; no RESET or timeout | Lacks reset supervision - requires external supervisor IC or µP internal BOR for brownout handling | Choose only if supervisor function is implemented elsewhere and board space favors SOT-23 over TDFN |
Compared with MAX6766TTSD3+, MAX6765TTSD3+ offers higher output voltage but identical thermal, timing, and automotive robustness - while TLV73333PDBVR reduces IQ by 6µA but removes critical safety-critical reset functionality required in automotive ECUs.
Availability
MAX6766TTSD3+ is available at Aetrix Electronics and suitable for automotive body electronics, industrial telemetry nodes, and telecom remote power management requiring stable component supply across extended temperature and high-reliability lifecycles.
Supply support for MAX6766TTSD3+ 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, emphasizing reliability, integration, and AEC-Q100 compliance.
The MAX6765–MAX6774 family delivers micropower, high-input-voltage linear regulation with integrated supervision - engineered specifically for automotive always-on subsystems where low IQ, wide VIN, and guaranteed reset timing are non-negotiable.
FAQ
What is the reset threshold voltage for MAX6766TTSD3+?
The MAX6766TTSD3+ has a fixed reset threshold of 3.353V (S suffix), with guaranteed minimum of 3.201V and maximum of 3.399V across –40°C to +125°C and 1–100mA load. This threshold is factory-trimmed and does not require external resistors - ensuring consistent brownout detection without calibration overhead in MAX6766TTSD3+ designs.
Does MAX6766TTSD3+ include a watchdog timer?
No, MAX6766TTSD3+ does not include a watchdog timer. It belongs to the MAX6765/MAX6766 subgroup, which provides only voltage supervision and fixed reset timeout. Watchdog functionality is exclusive to MAX6773/MAX6774 variants (e.g., MAX6773TTSD3+), making MAX6766TTSD3+ appropriate for applications where µP-level watchdog is handled externally or not required.
What package type and thermal rating does MAX6766TTSD3+ use?
MAX6766TTSD3+ uses a 3mm × 3mm, 6-pin TDFN-EP package with exposed pad (EP) connected internally to GND. At TA ≤ +70°C, it supports 1.951W continuous power dissipation; derating is 24.4mW/°C above +70°C. This enables reliable 100mA operation at +105°C ambient when mounted on ≥1in² 2oz copper.
Can MAX6766TTSD3+ be used with adjustable output voltages?
No, MAX6766TTSD3+ provides only fixed 3.3V output. Adjustable output capability is available only in MAX6767–MAX6774B variants (e.g., MAX6767TTSD3+) that feature the SET pin for external resistor-divider configuration. The MAX6766TTSD3+ lacks SET and RESETIN pins - simplifying design for dedicated 3.3V applications without trimming overhead.
Is MAX6766TTSD3+ pin-compatible with other devices in the MAX6765–MAX6774 family?
Yes, MAX6766TTSD3+ shares identical 6-pin TDFN-EP pinout with MAX6765TTx_x+, MAX6769TTx_x+, and MAX6770TTx_x+ variants. However, functional pin assignments differ: MAX6767/MAX6768 add HOLD, MAX6769/MAX6770 add RESETIN, and MAX6773/MAX6774 add WDI - so direct substitution requires verification of ENABLE/RESET/TIMEOUT signal compatibility and absence of unused pins in layout.
MAX6766TTSD3+ 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):
- 1.6V @ 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)
MAX6766TTSD3+ FAQ
1.How can I place an order for MAX6766TTSD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6766TTSD3+ 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 MAX6766TTSD3+ reliable?
The price and inventory of MAX6766TTSD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6766TTSD3+ is usually 5 days.
3.What payment methods are accepted for MAX6766TTSD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6766TTSD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6766TTSD3+?
MAX6766TTSD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6766TTSD3+ 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 MAX6766TTSD3+?
For technical support, including MAX6766TTSD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6766TTSD3+ requirements.
6.How does Aetrix verify that MAX6766TTSD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6766TTSD3+ 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 MAX6766TTSD3+ meets industry standards.
7.What is the process for return or replacement of MAX6766TTSD3+?
All MAX6766TTSD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6766TTSD3+, 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 MAX6766TTSD3+ part is unused and in its original packaging.
Return procedure for MAX6766TTSD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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