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Analog Devices Inc./Maxim Integrated MAX6771TATD1+
- Part No.:
- MAX6771TATD1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6771TATD1+.pdf
- Description:
- IC REG LINEAR 3.3V 100MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,182
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Product details
Overview
MAX6771TATD1+ from Maxim Integrated is an automotive-grade micropower linear regulator with integrated supervisor and dual-enable logic (ENABLE1/ENABLE2), delivering 100mA at 5.0V output from 4V–72V input, featuring 31µA quiescent current, open-drain active-low RESET, and 200ms fixed reset timeout - designed for ignition-controlled always-on modules in vehicle body electronics.
For engineers reviewing the MAX6771TATD1+ datasheet, MAX6771TATD1+ pinout, MAX6771TATD1+ application, or MAX6771TATD1+ equivalent, key selection criteria include dual-enable sequencing compatibility with CAN/LIN transceivers, -40°C to +125°C operation, thermal shutdown at 160°C, 620mV dropout at 100mA, and TDFN-EP package thermal performance up to 1.951W.
Technical Context
The MAX6771TATD1+ implements dual active-high enable inputs (ENABLE1 and ENABLE2) to support independent control paths - e.g., ignition switch (ENABLE1) and bus transceiver READY signal (ENABLE2) - enabling flexible power-on sequencing without external logic. Its supervisor circuit monitors regulated output voltage and asserts an open-drain RESET when VOUT falls below 4.625V (L-option threshold), holding low for 200ms after recovery.
This variant belongs to the MAX6771/MAX6772 subgroup and excludes watchdog timer (WDI), HOLD, RESETIN, or SET functionality - confirming fixed 5.0V output, fixed reset threshold, and fixed timeout. It uses internal trimmed feedback and operates with no external resistors required for regulation or reset configuration.
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 | 5.0V ±2.5% - factory-trimmed, no external resistors needed; stable across 1mA–100mA load and -40°C to +125°C. |
| Quiescent Current | 31µA typical at no load - enables >10-year battery life in always-on telematics or alarm modules. |
| Dropout Voltage | 620mV at 100mA - ensures regulation down to VIN = 5.62V, critical during engine cranking. |
| Reset Threshold | 4.625V (L-option) - guarantees µP reset before brownout-induced firmware corruption. |
| Reset Timeout | 200ms (D4 option) - satisfies automotive microcontroller reset timing requirements per ISO 16750-2. |
| Operating Temperature | -40°C to +125°C - qualified per AEC-Q100 Grade 0, suitable for under-hood placement. |
Pinout & Package
MAX6771TATD1+ is housed in a thermally enhanced 6-pin TDFN-EP (3mm × 3mm) package with exposed pad (EP) soldered to PCB ground plane for optimal thermal dissipation (1.951W at TA ≤ +70°C). The EP is electrically connected to GND internally but must not serve as primary GND connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Bypassed to GND with ≥0.1µF ceramic capacitor; accepts 4V–72V supply with transient tolerance. |
| 2 GND | Ground Reference | Power and signal return; connects to PCB ground plane; EP must also be tied to same plane. |
| 3 ENABLE1 | Active-High Enable 1 | Drives regulator ON when pulled ≥1.4V; internally pulldown-biased (0.6µA sink) for default OFF state. |
| 4 ENABLE2 | Active-High Enable 2 | Second independent enable path - both ENABLE1 and ENABLE2 must be high for regulation. |
| 5 RESET | Active-Low Open-Drain Output | Pulled low during reset condition; requires external pullup (e.g., to µP VCC) for proper logic level. |
| 6 OUT | Regulated Output | 5.0V @ up to 100mA; bypassed with ≥10µF low-ESR capacitor (ESR < 0.5Ω) for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Enable Logic | Simultaneous ENABLE1/ENABLE2 requirement prevents spurious turn-on - ideal for ignition + communication bus coordination. |
| Automotive Thermal Robustness | Thermal shutdown at 160°C with 20°C hysteresis enables safe operation in high-ambient under-hood environments. |
| Low-IQ Supervision | 31µA supply current includes full supervisor function - eliminates need for separate reset IC in space-constrained modules. |
| High-Voltage Input Tolerance | Withstands 80V absolute max input - survives ISO 7637-2 pulse 5a (load dump) without external TVS. |
| Fixed Reset Timing | 200ms D4 timeout eliminates capacitor selection error and board-level timing drift over temperature/lifetime. |
Applications
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|---|---|
Use Scenario: Powering CAN/LIN interface ICs and microcontrollers in door modules, seat controllers, and lighting nodes that remain active during vehicle sleep mode. IC Role / Device Role: Primary 5V supply with dual-enable sequencing synchronized to ignition status and bus activity signals. Use Value: Enables reliable wake-up and shutdown coordination while maintaining <35µA system standby current. |
Use Scenario: Supplying GPS receiver, cellular modem, and MCU in always-connected fleet management units requiring continuous GNSS tracking and OTA updates. IC Role / Device Role: Regulated 5V rail with guaranteed reset assertion during battery voltage sag during engine start. Use Value: Prevents modem lockup or GPS data loss by enforcing 200ms reset hold time aligned with automotive ECU reset standards. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Electronic Parking Brake (EPB) Controller |
Use Scenario: Powering image sensor interface and vision processor in rear-view or surround-view cameras mounted near engine compartment. IC Role / Device Role: High-input-voltage LDO with thermal protection and precise 5V output for noise-sensitive analog front-end circuits. Use Value: Maintains regulation through 72V load dump transients and sustains operation up to +125°C ambient without derating. |
Use Scenario: Providing fail-safe 5V supply to brake actuator MCU and motor drivers in parking brake control units subject to vibration and thermal cycling. IC Role / Device Role: Supervised regulator with deterministic reset behavior to ensure controlled actuator de-energization on power loss. Use Value: Guarantees clean reset initiation within 100µs of VOUT droop, meeting ASIL-B functional safety timing constraints. |
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 |
|---|---|---|---|
| MAX6772TATD1+ | Identical pinout, package, and electrical specs; differs only in reset threshold (4.375V, M-option) and timeout (200ms). | Suitable where lower reset threshold accommodates wider VOUT tolerance or higher system noise margin. | Select MAX6772TATD1+ if system requires reset assertion at 4.375V instead of 4.625V - no layout or firmware changes needed. |
| TLV70750PDQNR | Single-enable, 500mA output, 25µA IQ, but lacks supervisor, reset timeout, and automotive temp grade (-40°C to +125°C not guaranteed). | Limited to non-safety-critical consumer or industrial 5V rails without reset supervision. | Only consider TLV70750PDQNR for cost-sensitive non-automotive designs where supervisor function is implemented externally. |
Compared with MAX6772TATD1+, MAX6771TATD1+ provides tighter reset threshold (4.625V vs. 4.375V) for earlier fault detection in 5V systems; compared with TLV70750PDQNR, it delivers integrated AEC-Q100-compliant supervision, dual-enable control, and guaranteed high-temp operation - eliminating BOM count and validation effort.
Availability
MAX6771TATD1+ is available at Aetrix Electronics and suitable for automotive body electronics, telematics control units, ADAS camera ECUs, and electronic parking brake controllers requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX6771TATD1+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management solutions for automotive, industrial, and communications markets.
The MAX6765–MAX6774 family was engineered specifically for automotive micropower regulation with integrated supervision - addressing the need for ultra-low IQ, wide-input-voltage, and AEC-Q100-compliant power solutions in always-on vehicle subsystems.
FAQ
What is the reset threshold voltage for MAX6771TATD1+?
The MAX6771TATD1+ features a fixed reset threshold of 4.625V (L-option), meaning the active-low RESET output asserts when the regulated 5.0V output falls below this value. This threshold is factory-trimmed and guaranteed over -40°C to +125°C, ensuring consistent brownout detection without external components. The MAX6771TATD1+ does not support adjustable reset via RESETIN or external dividers.
Does MAX6771TATD1+ support watchdog timer functionality?
No, MAX6771TATD1+ does not include a watchdog timer input (WDI) or associated timeout circuitry. It belongs to the MAX6771/MAX6772 subgroup, which omits WDI, HOLD, RESETIN, and SET pins. Watchdog capability is exclusive to MAX6773/MAX6773B/MAX6774/MAX6774B variants. For designs requiring watchdog supervision, MAX6774TATD1+ (1.6s timeout) or MAX6774BATD1+ (50ms timeout) are functionally distinct alternatives.
What is the recommended input and output capacitance for MAX6771TATD1+?
Per the MAX6765–MAX6774 datasheet, MAX6771TATD1+ requires a minimum 0.1µF ceramic capacitor between IN and GND, and a minimum 10µF low-ESR (≤0.5Ω) output capacitor between OUT and GND. The output capacitor must be placed close to the device pins to ensure stability across temperature and load (1mA–100mA). X5R or X7R dielectrics are recommended; tantalum or aluminum electrolytics are not advised due to ESR and lifetime limitations.
Can MAX6771TATD1+ be used with a 75V input transient?
MAX6771TATD1+ has an absolute maximum input rating of +80V, so it can safely withstand 75V transients per ISO 7637-2 Pulse 5a (load dump), provided external clamping is used to limit duration and energy. However, continuous operation above 72V is not specified. For sustained 75V input, derating analysis per thermal limits and power dissipation (PD = (VIN – VOUT) × IOUT) is required - and operation beyond 72V voids parametric guarantees per datasheet conditions.
Is MAX6771TATD1+ pin-compatible with other devices in the MAX6765–MAX6774 family?
MAX6771TATD1+ shares the same 6-pin TDFN-EP package and pinout with MAX6765, MAX6766, MAX6769, MAX6770, and MAX6773/MAX6774 variants - but functional pin assignments differ. Specifically, pins 3 and 4 are ENABLE1/ENABLE2 on MAX6771TATD1+, whereas they are ENABLE and RESETIN (or unused) on others. Direct substitution without schematic review will cause malfunction. Always verify pin function mapping against the specific variant's Pin Description table.
MAX6771TATD1+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-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:
- 8-TDFN-EP (3x3)
MAX6771TATD1+ FAQ
1.How can I place an order for MAX6771TATD1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6771TATD1+ 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 MAX6771TATD1+ reliable?
The price and inventory of MAX6771TATD1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6771TATD1+ is usually 5 days.
3.What payment methods are accepted for MAX6771TATD1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6771TATD1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6771TATD1+?
MAX6771TATD1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6771TATD1+ 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 MAX6771TATD1+?
For technical support, including MAX6771TATD1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6771TATD1+ requirements.
6.How does Aetrix verify that MAX6771TATD1+ is sourced from the original manufacturer or authorized distributors?
All MAX6771TATD1+ 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 MAX6771TATD1+ meets industry standards.
7.What is the process for return or replacement of MAX6771TATD1+?
All MAX6771TATD1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6771TATD1+, 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 MAX6771TATD1+ part is unused and in its original packaging.
Return procedure for MAX6771TATD1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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