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Analog Devices Inc./Maxim Integrated MAX6472TA18BD3+T
- Part No.:
- MAX6472TA18BD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6472TA18BD3+T.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,987
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Product details
Overview
MAX6472TA18BD3+T from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 1.8V output, -12.5% reset threshold accuracy, and 150ms (min) reset timeout. It features 82µA quiescent current, 55mV dropout at 150mA, and active-low push-pull RESET output. Designed for battery-powered portable equipment including Bluetooth modules and digital cameras.
For engineers reviewing the MAX6472TA18BD3+T datasheet, MAX6472TA18BD3+T pinout, MAX6472TA18BD3+T application, or MAX6472TA18BD3+T equivalent, key selection criteria include guaranteed 300mA output current, ±2.0% output voltage accuracy over temperature, shutdown current of 0.1µA, thermal/short-circuit protection, and compatibility with 3.3µF minimum output capacitance.
Technical Context
The MAX6472TA18BD3+T implements a dual-function LDO regulator core with internal reference and fully integrated reset supervisor sharing the same reference voltage. Its reset circuit asserts active-low RESET when VOUT drops below 87.5% of nominal (1.575V at 1.8V output) and holds RESET for ≥150ms after recovery.
This device belongs to the MAX6471–MAX6474 subfamily: it includes SHDN (active-low shutdown) but no MR (manual reset) input, and uses SET pin for fixed-output configuration (SET = GND). It is packaged in 8-pin TDFN-EP with exposed paddle tied to GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2.0% over -40°C to +85°C - ensures stable core logic supply for 1.8V microcontrollers and memory. |
| Max Output Current | 300mA guaranteed - sufficient to power baseband processors or RF transceivers in portable devices. |
| Dropout Voltage | 55mV at 150mA - enables operation from single-cell Li-ion (3.0V min) while maintaining regulation down to 1.855V input. |
| Quiescent Current | 82µA typical - extends battery life in always-on monitoring circuits without compromising startup speed. |
| Reset Threshold | -12.5% of VOUT (1.575V at 1.8V) - meets standard microprocessor supply tolerance requirements for reliable boot sequencing. |
| Reset Timeout | 150ms minimum - provides adequate stabilization time for clock oscillators and PLLs before processor release. |
| Shutdown Current | 0.1µA typical - reduces system standby power to nanoampere level during deep sleep modes. |
Pinout & Package
MAX6472TA18BD3+T is housed in an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad internally connected to GND. The package supports high thermal dissipation when soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator Input | Accepts 2.5V–5.5V input; requires 0.1µF bypass capacitor to GND for stability and noise rejection. |
| 2 (GND) | Ground / Thermal Pad | Primary electrical return and thermal path; must be soldered to large copper area for junction temperature control. |
| 3 (SHDN) | Active-Low Shutdown Control | Pulling low disables regulator and reduces supply current to 0.1µA; connect to VIN for normal operation. |
| 4 (RESET) | Active-Low Push-Pull Reset Output | Drives µP reset pin directly; remains low during power-up, brownout, or shutdown until 150ms after VOUT stabilizes. |
| 5 (SET) | Feedback Reference Input | Connected to GND for fixed 1.8V output; open or floating not allowed - ensures correct internal resistor-divider selection. |
| 6 (OUT) | Regulated Output | Delivers 1.8V at up to 300mA; requires ≥3.3µF low-ESR ceramic capacitor to GND for transient response and stability. |
| 7–8 (EP) | Exposed Paddle | Internally tied to GND; must be soldered to PCB ground plane to achieve specified thermal resistance (θJA = 41°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Microprocessor Reset | Eliminates external supervisor IC; guarantees reset assertion during power-up, brownout, and shutdown events. |
| Low Dropout Voltage | 55mV at 150mA enables use with single-cell Li-ion batteries down to 3.0V while sustaining 1.8V output. |
| Ultra-Low Quiescent Current | 82µA supply current minimizes battery drain in always-on sensor nodes and wearable devices. |
| Thermal & Short-Circuit Protection | Shuts down at +180°C junction temperature and limits output to 450mA - prevents damage under fault conditions. |
| Reverse Current Protection | 0.01µA typical OUT-to-IN leakage prevents reverse battery discharge when external backup sources are present. |
Applications
| Bluetooth Module Power Management | Digital Camera Core Supply |
|---|---|
Use Scenario: Powers baseband processor and RF transceiver in compact Bluetooth headsets requiring stable 1.8V rail and reliable power-on reset. IC Role / Device Role / Timing Role: LDO regulator + integrated reset supervisor providing regulated 1.8V and synchronized µP reset signal. Use Value: Eliminates need for discrete reset IC and reduces BOM count; 150ms reset timeout ensures crystal oscillator stabilization before firmware execution. |
Use Scenario: Supplies image sensor interface and ISP core in battery-powered digital cameras operating from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 1.8V LDO with shutdown control enabling low-power capture mode and fast wake-up. Use Value: 0.1µA shutdown current extends standby time; 55mV dropout allows >95% battery utilization across full discharge curve. |
| USB Peripheral Power | PCMCIA Card Regulation |
Use Scenario: Regulates 1.8V supply for USB audio adapters or HID devices drawing ≤300mA from 5V USB bus. IC Role / Device Role / Timing Role: Input-to-output LDO with reverse leakage protection preventing backfeed into host USB port. Use Value: 0.01µA OUT-to-IN leakage meets USB On-The-Go (OTG) isolation requirements; push-pull RESET simplifies µP interface. |
Use Scenario: Provides clean 1.8V supply for PCMCIA/CardBus peripherals in industrial handheld terminals. IC Role / Device Role / Timing Role: High-reliability LDO with thermal shutdown protecting against connector hot-plug transients. Use Value: Guaranteed 300mA output supports burst-mode data transfer; ±2.0% accuracy maintains timing margin for synchronous interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76318QDBVRQ1 | 150mA output, 120mV dropout at 150mA, no integrated reset, automotive-grade (-40°C to +125°C) | Lacks reset function - requires external supervisor; suitable only where space permits two ICs and extended temperature is mandatory. | Select if AEC-Q100 qualification is required and system can accommodate separate reset IC. |
| ADP160ACBZ-1.8-R7 | 150mA output, 135mV dropout at 150mA, no reset, 1.8V fixed, 1.8µA quiescent current | No reset capability; lower IQ but insufficient current for 300mA loads - cannot replace MAX6472TA18BD3+T in same footprint or performance envelope. | Consider only for ultra-low-power sensor nodes where 150mA max load and external reset are acceptable. |
Compared with TPS76318QDBVRQ1 and ADP160ACBZ-1.8-R7, the MAX6472TA18BD3+T uniquely combines 300mA drive, integrated -12.5% reset with 150ms timeout, and 82µA quiescent current in a single 8-pin TDFN - enabling smaller PCB area and simplified power sequencing in portable designs.
Availability
MAX6472TA18BD3+T is available at Aetrix Electronics and suitable for Bluetooth modules, digital cameras, USB peripherals, and PCMCIA cards requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX6472TA18BD3+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management solutions for industrial, communications, and consumer applications.
The MAX6469–MAX6484 product line was designed specifically for battery-powered portable electronics requiring integrated power regulation and microprocessor supervision in minimal footprint.
FAQ
What is the output voltage tolerance of the MAX6472TA18BD3+T over temperature?
The MAX6472TA18BD3+T guarantees ±2.0% output voltage accuracy over the full operating temperature range of -40°C to +85°C. This specification applies to the fixed 1.8V output when loaded between 1mA and 300mA, ensuring reliable operation for 1.8V logic families across environmental extremes. The MAX6472TA18BD3+T achieves this using a precision internal reference and trimmed feedback network.
Does the MAX6472TA18BD3+T support manual reset functionality?
No, the MAX6472TA18BD3+T does not include a manual reset (MR) input. It belongs to the MAX6471–MAX6474 subfamily, which features SHDN (shutdown) but omits MR. Manual reset capability is only available on MAX6471–MAX6474/MAX6479–MAX6482 variants - the MAX6472TA18BD3+T relies solely on power-on, brownout, and shutdown-triggered reset assertion.
What is the minimum output capacitance required for stable operation of the MAX6472TA18BD3+T?
The MAX6472TA18BD3+T requires a minimum 3.3µF low-ESR ceramic capacitor from OUT to GND for stable operation and optimal transient response. This value is specified in the Electrical Characteristics table and validated across temperature and load conditions. Using less capacitance may cause instability or excessive output voltage overshoot during load steps.
Can the MAX6472TA18BD3+T be used with a single-cell Li-ion battery?
Yes, the MAX6472TA18BD3+T supports input voltages from 2.5V to 5.5V, making it compatible with single-cell Li-ion batteries (nominal 3.7V, discharge range ~3.0V–4.2V). With 55mV dropout at 150mA, it maintains 1.8V regulation down to 1.855V input - allowing >95% usable battery capacity before dropout occurs. The MAX6472TA18BD3+T also includes undervoltage lockout at 2.25V to prevent erratic behavior near end-of-discharge.
What package type is used for the MAX6472TA18BD3+T?
The MAX6472TA18BD3+T is packaged in an 8-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) measuring 3mm × 3mm with 0.5mm pitch. The exposed paddle is internally connected to GND and must be soldered to the PCB ground plane to achieve the specified thermal performance (θJA = 41°C/W) and ensure reliable operation at full 300mA load.
MAX6472TA18BD3+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 (1.8V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- -
- 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)
MAX6472TA18BD3+T FAQ
1.How can I place an order for MAX6472TA18BD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6472TA18BD3+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 MAX6472TA18BD3+T reliable?
The price and inventory of MAX6472TA18BD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6472TA18BD3+T is usually 5 days.
3.What payment methods are accepted for MAX6472TA18BD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6472TA18BD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6472TA18BD3+T?
MAX6472TA18BD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6472TA18BD3+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 MAX6472TA18BD3+T?
For technical support, including MAX6472TA18BD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6472TA18BD3+T requirements.
6.How does Aetrix verify that MAX6472TA18BD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6472TA18BD3+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 MAX6472TA18BD3+T meets industry standards.
7.What is the process for return or replacement of MAX6472TA18BD3+T?
All MAX6472TA18BD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6472TA18BD3+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 MAX6472TA18BD3+T part is unused and in its original packaging.
Return procedure for MAX6472TA18BD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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