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Analog Devices Inc./Maxim Integrated MAX6472TA30AD3+T
- Part No.:
- MAX6472TA30AD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6472TA30AD3+T.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,498
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Product details
Overview
MAX6472TA30AD3+T from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 3.0V output, -12.5% reset threshold, 150ms minimum reset timeout, and active-low manual reset (MR) input. It operates from 2.5V to 5.5V input, delivers ±2.0% output accuracy over -40°C to +85°C, and consumes only 82µA quiescent current - ideal for battery-powered portable systems requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6472TA30AD3+T datasheet, MAX6472TA30AD3+T pinout, MAX6472TA30AD3+T application, or MAX6472TA30AD3+T equivalent, key selection criteria include its MR-enabled reset assertion during in-spec operation, 150ms guaranteed reset hold time after MR release, shutdown capability (0.1µA), and compatibility with handheld instruments, Bluetooth modules, and USB peripherals where supply stability and deterministic reset timing are critical.
Technical Context
The MAX6472TA30AD3+T belongs to the MAX6471–MAX6474/MAX6479–MAX6482 variant group, featuring an active-low manual reset (MR) input with internal 40kΩ pullup to VOUT and reset timeout selectable via part number suffix (D3 = 150ms min). Its regulator core uses a precision bandgap reference shared with the reset comparator, ensuring tight correlation between output voltage accuracy and reset threshold tolerance (-12.5% of nominal 3.0V = 2.625V).
This device implements dual-mode feedback: SET pin grounded for fixed 3.0V output; when used in adjustable mode, SET accepts external resistor divider to set VOUT = 1.229V × (1 + R1/R2). MR assertion forces RESET low regardless of VOUT status, and RESET remains asserted for the full 150ms timeout after MR returns high - enabling controlled system restarts without requiring external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.0% over -40°C to +85°C - ensures stable core logic supply for 3.3V-tolerant microcontrollers. |
| Max Output Current | 300mA guaranteed - sufficient to power ARM Cortex-M0+ MCUs, RF transceivers, or sensor hubs without external pass devices. |
| Dropout Voltage | 114mV at 300mA load - enables operation from single-cell Li-ion (3.0V min) while maintaining regulation down to 2.886V output. |
| Reset Threshold | -12.5% of 3.0V = 2.625V (min assert), 2.700V (max deassert) - provides robust margin against supply sag during processor wake-up bursts. |
| Reset Timeout | 150ms minimum - meets JEDEC JESD78 requirement for microprocessor initialization hold time after power stabilization. |
| Supply Current | 82µA operating / 0.1µA shutdown - extends battery life in always-on IoT sensors and wearable standby modes. |
| MR Input Logic | Active-low with 40kΩ internal pullup to VOUT - eliminates external pullup resistor; compatible with open-drain GPIO or tactile switch interfaces. |
Pinout & Package
MAX6472TA30AD3+T is housed in an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed paddle thermally connected to GND. The package supports high-power dissipation (1951mW at +70°C) and requires PCB ground plane connection to EP for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 2.5V–5.5V supply; bypass with 0.1µF ceramic capacitor to GND for noise immunity. |
| 2 (GND) | Ground reference & thermal path | Must connect to large PCB ground plane; serves as primary heat sink for LDO pass transistor. |
| 3 (MR) | Manual reset input | Active-low; internally pulled up to VOUT (40kΩ); asserts RESET when pulled ≤0.9V (30% of 3.0V). |
| 4 (RESET) | Active-low reset output | Push-pull configuration; drives low during MR assertion, VOUT undervoltage, or power-up until 150ms timeout expires. |
| 5 (SET) | Feedback select | Grounded for fixed 3.0V output; connects to external resistor divider for adjustable mode (not used here). |
| 6 (OUT) | Regulated output | Delivers 3.0V @ 300mA; requires ≥3.3µF low-ESR ceramic output capacitor for stability. |
| EP | Exposed paddle | Internally tied to GND; must be soldered to PCB ground plane for thermal conduction and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated manual reset (MR) | Enables hardware-triggered system reset without software intervention - critical for field service, test mode entry, or safety-critical recovery. |
| 150ms minimum reset timeout | Guarantees sufficient hold time for clock oscillator stabilization and memory controller initialization before CPU release. |
| 0.1µA shutdown current | Reduces system standby power to nanoampere levels - enables multi-year battery life in coin-cell-powered remote sensors. |
| Reverse current protection | 0.01µA typical OUT-to-IN leakage prevents backup capacitor discharge into depleted main battery during hot-swap events. |
| Thermal shutdown with hysteresis | Shuts down at +180°C and re-enables at +160°C - protects against sustained overload in compact enclosures without airflow. |
Applications
| Handheld Instruments | Bluetooth Modules |
|---|---|
|
Use Scenario: Powering ARM-based data loggers in field-deployed environmental sensors with button-initiated firmware updates. IC Role / Device Role / Timing Role: Provides regulated 3.0V supply and generates synchronized reset pulse upon user-pressed MR switch to force clean bootloader entry. Use Value: Eliminates need for discrete supervisor IC and RC timing network, reducing BOM count by two components while guaranteeing 150ms reset hold time per JEDEC spec. |
Use Scenario: Supplying baseband processor and BLE radio in compact wireless earbuds with battery-level-triggered factory reset. IC Role / Device Role / Timing Role: Delivers low-noise 3.0V rail and asserts RESET via MR signal from MCU GPIO to initiate secure erase sequence during low-battery recovery. Use Value: Enables deterministic reset timing independent of VOUT droop - critical when battery voltage falls near LDO dropout but system must remain functional until final shutdown. |
| USB-C Peripherals | PCMCIA Cards |
|
Use Scenario: Regulating power for USB-C audio adapters that require host-initiated reset during enumeration failure. IC Role / Device Role / Timing Role: Supplies 3.0V to USB PHY and responds to host-driven MR signal (via I²C GPIO expander) to reset communication stack. Use Value: Supports USB Type-C vendor-defined messages (VDMs) for cable-aware reset without modifying host driver stack or adding level-shifting circuitry. |
Use Scenario: Powering legacy PCMCIA Wi-Fi cards in industrial laptops where hot-plug insertion must trigger full subsystem reset. IC Role / Device Role / Timing Role: Generates 3.0V for WLAN chipset and uses card-detect signal as MR input to assert RESET during slot insertion/removal. Use Value: Replaces discrete reset generator and power-good monitor, cutting PCB area by 35% and eliminating timing skew between power and reset assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-manual-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76330QDBVRQ1 | 300mA LDO with 3.0V fixed output, no MR input; reset function requires external supervisor (e.g., TPS3809). | Lacks integrated MR - necessitates additional IC and routing for manual reset functionality. | Select when MR is unused and AEC-Q100 automotive qualification is required (TPS76330QDBVRQ1 is qualified; MAX6472TA30AD3+T is not). |
| ADM7172ACPZ-3.0-R7 | 3.0V LDO with 200mA output, no reset or MR; requires external reset IC (e.g., ADM6315) for supervision. | No native reset or manual reset capability - increases design complexity and component count. | Choose only if ultra-low noise (1.8µV RMS) is prioritized over integration; MAX6472TA30AD3+T offers superior integration for space-constrained portable designs. |
Compared with TPS76330QDBVRQ1 and ADM7172ACPZ-3.0-R7, the MAX6472TA30AD3+T uniquely integrates MR input, 150ms reset timeout, and 300mA drive in one 3×3mm package - reducing total solution size by >40% and eliminating inter-IC timing dependencies in battery-powered edge devices.
Availability
MAX6472TA30AD3+T is available at Aetrix Electronics and suitable for handheld instruments, Bluetooth modules, USB-C peripherals, PCMCIA cards, and digital cameras requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX6472TA30AD3+T 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, medical, and communications applications.
The MAX6469–MAX6484 product line targets battery-powered portable equipment needing tightly coupled regulation and reset functions - delivering single-chip power sequencing for microprocessor-based systems with minimal external components.
FAQ
What is the reset timeout duration for MAX6472TA30AD3+T?
The MAX6472TA30AD3+T has a fixed 150ms minimum reset timeout period (suffix D3), meaning RESET remains asserted for at least 150ms after MR transitions from low to high or after VOUT rises above the -12.5% threshold. This value is factory-programmed and cannot be adjusted externally. The actual timeout may extend slightly due to process variation but will never fall below 150ms under specified conditions.
Does MAX6472TA30AD3+T support adjustable output voltage?
No, MAX6472TA30AD3+T is configured for fixed 3.0V output. Its SET pin is internally connected to ground during manufacturing to enable preset mode. While the underlying MAX6472 die supports adjustable operation via external resistor divider on SET, the MAX6472TA30AD3+T variant is trimmed and tested exclusively for 3.0V fixed output - using SET for adjustment would invalidate output accuracy and reset threshold calibration.
What is the function of the MR pin on MAX6472TA30AD3+T?
The MR (Manual Reset) pin on MAX6472TA30AD3+T is an active-low input that forces the RESET output low regardless of VOUT status. When MR is pulled below 0.9V (30% of 3.0V), RESET asserts immediately and remains low for the full 150ms timeout after MR returns high. An internal 40kΩ pullup to VOUT eliminates need for external resistor, enabling direct connection to pushbutton switches or GPIO pins.
Can MAX6472TA30AD3+T operate with input voltage below 2.5V?
No, MAX6472TA30AD3+T requires minimum 2.5V input per Absolute Maximum Ratings and Electrical Characteristics tables. At VIN < 2.5V, the device enters undervoltage lockout (UVLO) - IN voltage falling below 2.25V (min) disables regulation and asserts RESET. Operation below 2.5V is undefined and may result in unregulated output, increased ground current, or failure to meet reset timing specifications.
Is MAX6472TA30AD3+T RoHS-compliant and lead(Pb)-free?
Yes, MAX6472TA30AD3+T is supplied in lead(Pb)-free/RoHS-compliant packaging, as indicated by the "+T" suffix per Maxim's Ordering Information. The TDFN-EP package uses matte tin finish on all terminations and complies with JEDEC JS-011B and IPC/JEDEC J-STD-020D moisture sensitivity level 1 (MSL-1) requirements for surface-mount assembly.
MAX6472TA30AD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V (3V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 0.19V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 136 µA
- Current - Supply (Max):
- 96 µA
- PSRR:
- -
- Control Features:
- Manual Reset, Reset
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX6472TA30AD3+T FAQ
1.How can I place an order for MAX6472TA30AD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6472TA30AD3+T 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 MAX6472TA30AD3+T reliable?
The price and inventory of MAX6472TA30AD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6472TA30AD3+T is usually 5 days.
3.What payment methods are accepted for MAX6472TA30AD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6472TA30AD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6472TA30AD3+T?
MAX6472TA30AD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6472TA30AD3+T 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 MAX6472TA30AD3+T?
For technical support, including MAX6472TA30AD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6472TA30AD3+T requirements.
6.How does Aetrix verify that MAX6472TA30AD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6472TA30AD3+T 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 MAX6472TA30AD3+T meets industry standards.
7.What is the process for return or replacement of MAX6472TA30AD3+T?
All MAX6472TA30AD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6472TA30AD3+T, 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 MAX6472TA30AD3+T part is unused and in its original packaging.
Return procedure for MAX6472TA30AD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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