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Analog Devices Inc./Maxim Integrated MAX6472TA25AD3+T
- Part No.:
- MAX6472TA25AD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6472TA25AD3+T.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,212
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Product details
Overview
MAX6472TA25AD3+T from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 2.5V output, -12.5% reset threshold, 150ms minimum reset timeout, active-low push-pull RESET, and active-low SHDN control. 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 handheld instruments and USB peripherals.
For engineers reviewing the MAX6472TA25AD3+T datasheet, MAX6472TA25AD3+T pinout, MAX6472TA25AD3+T application, or MAX6472TA25AD3+T equivalent, this page provides verified technical context, exact pin functions, real-world use cases, and validated alternative options for portable power management designs requiring stable voltage regulation and reliable processor supervision.
Technical Context
The MAX6472TA25AD3+T integrates a precision LDO regulator core with a fully self-contained reset supervisor using a shared reference. Its SHDN input enables digital shutdown (0.1µA typ), while the RESET output asserts low during VIN undervoltage lockout (2.25V min), VOUT dropout below -12.5% of 2.5V (i.e., <2.1875V), or SHDN assertion - holding low for ≥150ms after recovery.
This device belongs to the MAX6471–MAX6474 subfamily: it features SHDN (Pin 3) and RESET (Pin 4) but no MR pin, confirming manual reset capability is excluded. Its 8-pin TDFN-EP package supports thermal dissipation up to 1951mW at +70°C, with exposed paddle internally tied to GND for PCB-level heat sinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2.0% over -40°C to +85°C - ensures stable core logic supply for 2.5V microcontrollers and FPGAs. |
| Max Output Current | 300mA guaranteed - sufficient to power baseband processors, RF transceivers, or multi-peripheral USB devices. |
| Dropout Voltage | 114mV at 300mA load - enables operation down to VIN = 2.614V, critical for single-cell Li-ion or alkaline battery systems. |
| Quiescent Current | 82µA typical - extends battery life in always-on monitoring circuits without compromising startup speed. |
| Reset Threshold | -12.5% of VOUT (2.1875V min) - meets stringent microprocessor supply tolerance requirements per JEDEC JESD8-12. |
| Reset Timeout | 150ms minimum - satisfies boot-time stabilization windows for ARM Cortex-M and RISC-V SoCs. |
| Shutdown Current | 0.1µA typical - reduces system standby power to nanoampere levels during deep sleep modes. |
Pinout & Package
MAX6472TA25AD3+T uses an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad (EP) internally connected to GND. The EP must be soldered to a PCB ground plane for thermal integrity and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator Input | Accepts 2.5V–5.5V input; requires 0.1µF ceramic bypass to GND for stability and noise rejection. |
| 2 (GND) | Ground / Thermal Sink | Primary return path and thermal conduction interface; must connect to large copper area or internal ground plane. |
| 3 (SHDN) | Active-Low Shutdown Control | Pulled high to VIN for normal operation; pulling low disables regulator and cuts supply current to 0.1µA. |
| 4 (RESET) | Active-Low Push-Pull Reset Output | Drives low during fault conditions and holds low ≥150ms post-recovery; no external pullup required. |
| 5 (SET) | Feedback Reference Input | Internally tied to GND for fixed 2.5V mode; left unconnected or grounded - not used for adjustable configuration. |
| 6 (OUT) | Regulated Output | Delivers 2.5V/300mA; requires ≥3.3µF low-ESR ceramic capacitor to GND for transient response and PSRR. |
| 7,8 (NC) | No Connect | Not bonded; electrically isolated - must remain unconnected on PCB layout. |
| EP | Exposed Thermal Pad | Internally connected to GND; mandatory soldering to PCB ground plane for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Microprocessor Reset | Eliminates need for discrete supervisor IC - reduces BOM count and board space in compact portable designs. |
| Low Dropout at Full Load | 114mV @ 300mA enables >95% efficiency at 2.5V output from 2.7V Li-ion cells near end-of-discharge. |
| Thermal & Short-Circuit Protection | Auto-recovering thermal shutdown at +180°C and 450mA current limit prevent damage during sustained overload. |
| Reverse Current Blocking | 0.01µA IN-to-OUT leakage prevents battery backfeed when OUT is externally powered - critical for backup rail integrity. |
| Input Voltage Range | 2.5V–5.5V supports single-cell Li-ion (2.7–4.2V), dual-cell alkaline (2.4–3.2V), and USB 5V bus-powered operation. |
Applications
| Handheld Instruments | USB Peripheral Devices |
|---|---|
|
Use Scenario: Powering a battery-operated handheld multimeter with LCD display, ADC, and Bluetooth LE radio. IC Role / Device Role / Timing Role: Primary 2.5V supply regulator and system reset supervisor ensuring clean boot after battery insertion or wake-up from sleep. Use Value: 82µA quiescent current extends shelf life; 150ms reset timeout guarantees oscillator stabilization before MCU initialization. |
Use Scenario: Regulating 2.5V for a USB-to-serial bridge IC (e.g., CP2102) in a field-deployable sensor dongle. IC Role / Device Role / Timing Role: LDO + reset generator co-located with USB interface IC to meet USB suspend/resume timing and voltage compliance. Use Value: 114mV dropout allows operation from weak USB ports (<4.75V); push-pull RESET drives CP2102's RESET# directly without pullup. |
| Notebook Subsystem | Wireless Module Power |
|
Use Scenario: Supplying 2.5V to a discrete audio codec or smart card reader controller within a notebook's expansion bay. IC Role / Device Role / Timing Role: Secondary regulated rail with independent reset signaling to isolate subsystem faults from main CPU domain. Use Value: ±2.0% output accuracy maintains codec SNR; SHDN pin enables firmware-controlled subsystem power gating. |
Use Scenario: Powering a Bluetooth 5.0 module (e.g., nRF52840) in a wearable health monitor with coin-cell backup. IC Role / Device Role / Timing Role: Main 2.5V rail regulator with reset assertion during battery swap to force controlled reboot and memory save. Use Value: Reverse leakage protection (0.01µA) prevents coin-cell discharge when main battery is removed; 150ms timeout aligns with BLE stack initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76325QDBVRQ1 | 250mA output, 120mV dropout @ 250mA, -10% reset threshold, 200ms timeout, SOT-23-6 package | Lacks SHDN pin; reset is open-drain only; lower current rating limits use in higher-power peripherals | Choose for automotive-qualified AEC-Q100 Grade 3 designs where 250mA suffices and SHDN is not required. |
| NCP1117ST25T3G | 800mA output, 1.2V dropout @ 800mA, no integrated reset, TO-220/SOT-223 package, ±2% accuracy | Requires external reset IC (e.g., MCP102); larger footprint; higher dropout limits low-voltage battery use | Choose when higher current and cost sensitivity outweigh integration benefits and board space constraints. |
Compared with MAX6472TA25AD3+T, TPS76325QDBVRQ1 offers automotive qualification but sacrifices shutdown control and current headroom, while NCP1117ST25T3G delivers higher current at the cost of added components, larger size, and no built-in reset - making MAX6472TA25AD3+T optimal for space-constrained, battery-sensitive portable designs needing full integration.
Availability
MAX6472TA25AD3+T is available at Aetrix Electronics and suitable for handheld instruments, USB peripheral devices, and wireless module power applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6472TA25AD3+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 and mixed-signal ICs for power management, sensing, and connectivity in demanding environments.
The MAX6469–MAX6484 product line targets ultra-low-power portable electronics, integrating LDO regulation and microprocessor reset into minimal-footprint packages to eliminate discrete supervisors and reduce system-level complexity.
FAQ
What is the exact output voltage and accuracy of the MAX6472TA25AD3+T?
The MAX6472TA25AD3+T provides a fixed 2.5V output with ±2.0% accuracy over the full operating temperature range (-40°C to +85°C). This specification is guaranteed across all production units and includes line, load, and temperature variation - ensuring reliable operation for 2.5V logic rails in portable equipment without external trimming.
Does the MAX6472TA25AD3+T include a manual reset (MR) input?
No, the MAX6472TA25AD3+T does not include a manual reset (MR) input. It belongs to the MAX6471–MAX6474 subfamily, which features SHDN and RESET pins but omits MR functionality. For manual reset capability, consider MAX6471TA25AD3+T or MAX6473TA25AD3+T instead - both share identical output and reset specs but add the MR pin.
What is the function of the SET pin on the MAX6472TA25AD3+T?
On the MAX6472TA25AD3+T, the SET pin is configured for fixed-output operation and must be connected to GND. It is not used for adjustable voltage configuration - that functionality applies only to MAX6469–MAX6472/MAX6477–MAX6480 variants with different suffixes. Leaving SET floating or unconnected may cause regulation instability.
What package type and thermal characteristics does the MAX6472TA25AD3+T use?
The MAX6472TA25AD3+T uses an 8-pin TDFN-EP (3mm × 3mm) package with exposed thermal pad. Its maximum power dissipation is 1951mW at +70°C, derating by 24.4mW/°C above that temperature. The EP must be soldered to a PCB ground plane to achieve specified thermal performance and ensure reliable operation at full 300mA load.
Can the MAX6472TA25AD3+T be used with a single-cell Li-ion battery?
Yes, the MAX6472TA25AD3+T supports single-cell Li-ion operation: its 2.5V–5.5V input range covers the full Li-ion discharge curve (2.7V–4.2V), and its 114mV dropout at 300mA allows regulation down to VIN = 2.614V - well within the usable voltage window. Combined with 82µA quiescent current, it maximizes runtime in battery-critical applications.
MAX6472TA25AD3+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 (2.5V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 0.25V @ 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)
MAX6472TA25AD3+T FAQ
1.How can I place an order for MAX6472TA25AD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6472TA25AD3+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 MAX6472TA25AD3+T reliable?
The price and inventory of MAX6472TA25AD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6472TA25AD3+T is usually 5 days.
3.What payment methods are accepted for MAX6472TA25AD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6472TA25AD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6472TA25AD3+T?
MAX6472TA25AD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6472TA25AD3+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 MAX6472TA25AD3+T?
For technical support, including MAX6472TA25AD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6472TA25AD3+T requirements.
6.How does Aetrix verify that MAX6472TA25AD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6472TA25AD3+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 MAX6472TA25AD3+T meets industry standards.
7.What is the process for return or replacement of MAX6472TA25AD3+T?
All MAX6472TA25AD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6472TA25AD3+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 MAX6472TA25AD3+T part is unused and in its original packaging.
Return procedure for MAX6472TA25AD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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