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Analog Devices Inc./Maxim Integrated MAX6770TASD2+
- Part No.:
- MAX6770TASD2+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6770TASD2+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,358
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Product details
Overview
MAX6770TASD2+ from Maxim Integrated is a micropower automotive-grade linear regulator with integrated supervisor, delivering 100mA at fixed 3.3V output (T suffix), 4.25V reset threshold (S suffix), and 12.5ms fixed reset timeout (D2 suffix). It operates from 4V to 72V input, consumes only 38µA quiescent current, and features open-drain active-low RESET output - ideal for always-on vehicle body control modules requiring reliable power sequencing and brownout detection.
For engineers reviewing the MAX6770TASD2+ datasheet, MAX6770TASD2+ pinout, MAX6770TASD2+ application, or MAX6770TASD2+ equivalent, key selection criteria include its AEC-Q100-qualified operation across –40°C to +125°C, thermally enhanced 3mm × 3mm TDFN package, enable-controlled startup, and compatibility with 12V/24V/48V automotive battery systems under load dump and cold-crank conditions.
Technical Context
The MAX6770TASD2+ implements a single active-high ENABLE input to control regulator turn-on/off, with internal 0.6µA pulldown ensuring default-off behavior. Its RESET output asserts when VOUT falls below 4.25V (S threshold) and remains asserted for ≥12.5ms after recovery - meeting µP reset timing requirements per JEDEC JESD84-B51.
This device belongs to the MAX6765–MAX6774B family of high-voltage linear regulators with integrated supervision. Unlike watchdog-equipped variants (e.g., MAX6773), the MAX6770 lacks WDI functionality and uses fixed-output architecture - no external SET resistor network required. Its thermal shutdown activates at +160°C with 20°C hysteresis, supporting continuous operation in engine bay environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 72V - supports full automotive battery range including load dump (up to +72V transient) and cold-crank (down to 4V). |
| Output Voltage | Fixed 3.3V ±2.5% - stable supply for automotive microcontrollers, CAN transceivers, and sensor interfaces. |
| Quiescent Current | 38µA typical - enables <100µA system standby current in always-on modules compliant with ISO 16750-2. |
| Reset Threshold | 4.25V (S option) - triggers reset before 3.3V rail collapse, ensuring deterministic µP restart during brownout. |
| Reset Timeout | 12.5ms (D2 option) - satisfies minimum reset pulse width requirements for ARM Cortex-M and Renesas RH850 MCUs. |
| Dropout Voltage | 866mV max at 100mA (3.3V output) - maintains regulation down to VIN = 4.166V, critical during cold-crank. |
| Package | 6-pin 3mm × 3mm TDFN-EP - 1.951W thermal dissipation enables 100mA continuous output at +105°C ambient. |
Pinout & Package
MAX6770TASD2+ is housed in a thermally enhanced 6-pin TDFN package (3mm × 3mm, 0.75mm height) with exposed pad (EP) connected internally to GND. The EP must be soldered to a PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input | Accepts 4V–72V unregulated supply; requires ≥0.1µF ceramic bypass capacitor to GND for stability. |
| 2 - GND | Power and signal reference | Common return path for regulator, RESET, and ENABLE; connects to EP for low-impedance thermal path. |
| 3 - ENABLE | Active-high enable input | Drives high (>1.4V) to activate regulator; internally pulled down to GND (0.6µA) for fail-safe shutdown. |
| 4 - RESET | Active-low open-drain reset output | Sinks up to 3.2mA; requires external pull-up to VCC or VOUT; asserts low during undervoltage or startup. |
| 5 - TIMEOUT | Reset timeout configuration | Connected to OUT for fixed 12.5ms timeout (D2); floating or capacitor-to-GND enables adjustable timing. |
| 6 - OUT | Regulated 3.3V output | Delivers up to 100mA; requires ≥10µF ceramic output capacitor with ≤10mΩ ESR for transient response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified per Grade 0 (–40°C to +150°C junction), enabling use in safety-critical automotive domains without additional qualification. |
| Low dropout at high load | 620mV dropout at 100mA for 5V versions; 866mV for 3.3V version - ensures regulation during deep battery sag. |
| Integrated overtemperature protection | Thermal shutdown at +160°C with +20°C hysteresis - prevents latch-up and enables self-recovery in overheating scenarios. |
| Robust input voltage tolerance | Withstands –0.3V to +80V on IN pin - survives reverse-battery connection and load-dump transients per ISO 7637-2 Pulse 5a. |
| Guaranteed reset assertion | RESET asserts within 0.3µs of VOUT falling below threshold - meets fast-fail response requirements for ASIL-B systems. |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Camera Power |
|---|---|
Use Scenario: Powering microcontroller, LIN transceiver, and door-lock actuator drivers in vehicle door modules. IC Role / Device Role / Timing Role: Primary 3.3V LDO with supervisor; provides regulated supply and hard-reset signal during ignition cycling and battery disconnect. Use Value: 38µA quiescent current enables <100µA module sleep current; 12.5ms reset pulse ensures reliable MCU boot after wake-up from ultra-low-power mode. |
Use Scenario: Supplying image sensor and ISP in rear-view or surround-view cameras mounted in hot under-hood locations. IC Role / Device Role / Timing Role: High-input-voltage LDO with thermal protection; regulates 3.3V rail while monitoring for brownout during engine start. Use Value: 3mm × 3mm TDFN package with exposed pad dissipates 1.951W - sustains 100mA output at +105°C ambient without derating. |
| Telematics Control Unit (TCU) | Automotive Gateway ECU |
Use Scenario: Powering cellular modem, GNSS receiver, and secure element in always-connected fleet management units. IC Role / Device Role / Timing Role: Always-on 3.3V regulator with precise reset threshold; initiates controlled reboot upon battery voltage sag below 4.25V. Use Value: 4.25V reset threshold aligns with LTE modem VDD brownout spec; open-drain RESET allows wired-OR with other supervisors. |
Use Scenario: Providing clean 3.3V supply to multi-core gateway SoC managing CAN FD, Ethernet, and LIN communication stacks. IC Role / Device Role / Timing Role: Input-stage LDO with enable control; sequenced by main PMIC to delay SoC power-up until primary rails stabilize. Use Value: Single ENABLE pin simplifies power sequencing logic; 72V max input withstands 24V truck battery transients per ISO 16750-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6769TASD2+ | Includes RESETIN pin for adjustable reset threshold monitoring; same 3.3V/4.25V/D2 configuration and package. | Used where reset must monitor external rail (e.g., 5V analog supply) instead of VOUT. | Select MAX6769TASD2+ only if independent reset supervision of a secondary voltage is required. |
| TLV73333PDBVR | Lower input range (1.4V–5.5V), 300mA output, 65µA IQ, SOT-23-5 package - not AEC-Q100 qualified. | Targeted at non-automotive industrial or consumer applications with low-voltage inputs. | Not suitable for automotive use; MAX6770TASD2+ is required for 4V–72V operation and AEC-Q100 compliance. |
Compared with MAX6769TASD2+, the MAX6770TASD2+ eliminates RESETIN complexity for simpler VOUT-only supervision, reducing BOM count and layout area; versus TLV73333PDBVR, it delivers automotive-grade reliability, extended input range, and guaranteed high-temp performance - essential for under-hood deployment.
Availability
MAX6770TASD2+ is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera power supplies, and telematics control units requiring stable component supply across long production lifecycles and extreme temperature environments.
Supply support for MAX6770TASD2+ 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–MAX6774B product line delivers high-voltage micropower LDOs with integrated supervision specifically for automotive always-on modules - balancing ultra-low quiescent current, wide input range, and AEC-Q100 reliability.
FAQ
What is the maximum input voltage rating for MAX6770TASD2+?
The MAX6770TASD2+ has an absolute maximum input voltage rating of +80V on the IN pin, with operational specification from 4V to 72V. This allows robust operation during automotive load-dump events (ISO 7637-2 Pulse 5a) and compatibility with 12V, 24V, and 48V battery architectures. Exceeding +80V risks permanent damage.
Does MAX6770TASD2+ include a watchdog timer function?
No, the MAX6770TASD2+ does not include a watchdog timer. Watchdog functionality is exclusive to MAX6773/MAX6773B/MAX6774/MAX6774B variants. The MAX6770TASD2+ provides only voltage-monitoring reset supervision - asserting RESET when VOUT falls below 4.25V - with no WDI pin or timeout monitoring of microprocessor activity.
What is the thermal performance of MAX6770TASD2+ in its TDFN package?
The MAX6770TASD2+ in its 3mm × 3mm TDFN-EP package delivers 1.951W maximum power dissipation at +70°C ambient, derating by 24.4mW/°C above that. With proper PCB copper area (1in², 2oz), it sustains 100mA output continuously at +105°C ambient - validated per JESD51-3/5 standards and critical for engine compartment placement.
How is the reset timeout period configured on MAX6770TASD2+?
The MAX6770TASD2+ uses the D2 suffix to indicate a factory-trimmed 12.5ms reset timeout. This is implemented by internal circuitry - no external capacitor needed. The TIMEOUT pin is connected to OUT internally for this fixed timing. For adjustable timeout, a different part number (e.g., MAX6770TASD3+) with capacitor-based timing would be required.
Is MAX6770TASD2+ compatible with standard 3.3V microcontrollers?
Yes, the MAX6770TASD2+ delivers a tightly regulated 3.3V ±2.5% output across –40°C to +125°C and 1mA–100mA load, meeting supply requirements for automotive MCUs including NXP S32K, ST STM32G4, and Infineon AURIX TC3xx families. Its 12.5ms RESET pulse width exceeds JEDEC JESD84-B51 minimums for reliable boot initialization.
MAX6770TASD2+ 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:
- 1.085V, 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)
MAX6770TASD2+ FAQ
1.How can I place an order for MAX6770TASD2+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6770TASD2+ 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 MAX6770TASD2+ reliable?
The price and inventory of MAX6770TASD2+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6770TASD2+ is usually 5 days.
3.What payment methods are accepted for MAX6770TASD2+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6770TASD2+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6770TASD2+?
MAX6770TASD2+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6770TASD2+ 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 MAX6770TASD2+?
For technical support, including MAX6770TASD2+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6770TASD2+ requirements.
6.How does Aetrix verify that MAX6770TASD2+ is sourced from the original manufacturer or authorized distributors?
All MAX6770TASD2+ 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 MAX6770TASD2+ meets industry standards.
7.What is the process for return or replacement of MAX6770TASD2+?
All MAX6770TASD2+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6770TASD2+, 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 MAX6770TASD2+ part is unused and in its original packaging.
Return procedure for MAX6770TASD2+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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