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Analog Devices Inc./Maxim Integrated MAX6472TA15AD3+T
- Part No.:
- MAX6472TA15AD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6472TA15AD3+T.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6472TA15AD3+T from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 1.5V output, -12.5% reset threshold, 150ms minimum reset timeout, and active-low open-drain RESET output. It operates from 2.5V to 5.5V input, consumes 82µA quiescent current, and delivers ±2.0% output voltage accuracy over -40°C to +85°C - ideal for battery-powered Bluetooth modules and USB peripherals requiring reliable power sequencing.
For engineers reviewing the MAX6472TA15AD3+T datasheet, MAX6472TA15AD3+T pinout, MAX6472TA15AD3+T application, or MAX6472TA15AD3+T equivalent, this page provides verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in Maxim's official specifications for the precise part number.
Technical Context
The MAX6472TA15AD3+T integrates a precision LDO regulator core and a fully self-contained reset supervisor sharing the same reference voltage. Its regulator supports 1.5V fixed output with dropout as low as 55mV at 150mA and 114mV at 300mA, while the reset circuit monitors VOUT against a -12.5% threshold and asserts an open-drain RESET signal for ≥150ms after recovery.
This device belongs to the MAX6471–MAX6474 subfamily: it features an active-low manual reset input (MR), shutdown capability (SHDN), and SET pin for optional adjustable operation - but in its configured state (TA15AD3+T), it uses preset 1.5V output and does not require external feedback components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed +1.5V - factory-trimmed, no external resistors required for nominal operation. |
| Max Output Current | 300mA guaranteed - sufficient to power baseband processors or RF transceivers in portable devices. |
| Dropout Voltage | 114mV at 300mA - enables stable 1.5V regulation from a single 1.8V Li-ion cell or 2-cell alkaline supply. |
| Quiescent Current | 82µA - minimizes battery drain during active operation; drops to 0.1µA in shutdown mode. |
| Reset Threshold | -12.5% of VOUT (1.3125V) - ensures µP reset before supply falls outside JEDEC JESD8-5B tolerance bands. |
| Reset Timeout | 150ms minimum - meets typical processor initialization timing requirements without external RC networks. |
| Input Voltage Range | 2.5V to 5.5V - compatible with common intermediate rails including 3.3V, 5V, and boosted battery sources. |
Pinout & Package
MAX6472TA15AD3+T is housed in an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed paddle thermally connected to GND. Pin 1 is IN; Pin 2 is GND; Pin 3 is MR (manual reset input); Pin 4 is RESET (open-drain active-low); Pin 5 is SET (feedback input, tied to GND for fixed 1.5V); Pin 6 is OUT; Pins 7–8 are unused; EP is soldered to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input supply | Accepts 2.5V–5.5V input; requires 0.1µF ceramic bypass to GND close to pin. |
| 2 (GND) | Power and thermal reference | Primary ground return and heatsink path; must connect to large copper area or ground plane. |
| 3 (MR) | Active-low manual reset input | Pulls RESET low when asserted; internal 40kΩ pullup to VOUT eliminates need for external resistor. |
| 4 (RESET) | Open-drain active-low reset output | Sinks up to 3.2mA; requires external pullup to host VCC; asserts during brownout, power-up, or MR event. |
| 5 (SET) | Feedback reference node | Internally connected to 1.229V reference; tied to GND for fixed 1.5V output; floats for adjustable configuration. |
| 6 (OUT) | Regulated output | Delivers 1.5V ±2.0% at up to 300mA; requires ≥3.3µF low-ESR ceramic capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated microprocessor reset | Eliminates external supervisor IC - reduces BOM count and board space in space-constrained designs. |
| Manual reset input (MR) | Enables system-level reset initiation via pushbutton or logic signal without cycling main power rail. |
| Shutdown control (SHDN) | Reduces total supply current to 0.1µA (typ), enabling ultra-low-power sleep states in portable equipment. |
| Reverse current protection | 0.01µA max OUT-to-IN leakage prevents backup capacitor or battery discharge when main supply is removed. |
| Thermal and short-circuit protection | Shuts down at 180°C junction temperature with 20°C hysteresis; survives indefinite output short to GND. |
Applications
| Bluetooth Module Power Management | USB Peripheral Regulation |
|---|---|
|
Use Scenario: Powers baseband controller and RF transceiver in Class 2 Bluetooth headsets or dongles using single-cell lithium or alkaline supply. IC Role / Device Role / Timing Role: Provides clean, sequenced 1.5V supply with synchronized reset assertion to ensure firmware boots only after stable voltage and clock are established. Use Value: 150ms reset timeout guarantees full oscillator stabilization before CPU release; 82µA IQ extends talk time by >12% versus legacy supervisors. |
Use Scenario: Regulates 1.5V I/O rail for USB 2.0 transceivers and PHY logic in portable hubs or OTG adapters. IC Role / Device Role / Timing Role: Acts as primary LDO with built-in reset supervision - replaces discrete LDO + reset IC combo on compact USB PCBs. Use Value: Open-drain RESET interfaces directly with USB controller's nRESET pin; MR pin allows host-initiated re-enumeration without disconnecting VBUS. |
| Notebook Subsystem Backup Supply | Digital Camera Sensor Bias Rail |
|
Use Scenario: Supplies always-on 1.5V rail to real-time clock (RTC), lid switch logic, and keyboard controller during S3/S4 suspend states. IC Role / Device Role / Timing Role: Maintains regulated output from supercapacitor or coin cell when main 3.3V rail is off; asserts RESET during brownout to halt memory writes. Use Value: 0.1µA shutdown current enables >3-month RTC hold-up from 0.1F supercap; reverse leakage <0.01µA prevents backup source depletion. |
Use Scenario: Powers analog front-end and column drivers of CMOS image sensors in compact digital cameras and action cams. IC Role / Device Role / Timing Role: Delivers low-noise 1.5V bias with fast transient response to handle sensor pixel readout bursts and frame-rate switching. Use Value: 114mV dropout at 300mA allows operation from 1.8V battery even under load; ±2.0% accuracy ensures consistent ADC reference scaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76315QDBVRQ1 | 150mA max output, 200mV dropout at 150mA, no MR pin, fixed 1.5V, 120ms reset timeout | Lacks manual reset input; suitable only where system-level reset is handled externally | Select if cost sensitivity outweighs need for MR functionality and higher current capability |
| ADP196ACBZ-1.5-R7 | 300mA output, 180mV dropout at 300mA, no integrated reset, requires external supervisor IC | Requires additional BOM components and PCB area for reset generation and timing | Choose when design already includes a shared reset supervisor across multiple rails |
Compared with MAX6472TA15AD3+T, TPS76315QDBVRQ1 trades 150mA current limit and missing MR for AEC-Q100 qualification, while ADP196ACBZ-1.5-R7 offers identical current but shifts reset responsibility to external circuitry - making MAX6472TA15AD3+T optimal for space-constrained, self-contained reset sequencing.
Availability
MAX6472TA15AD3+T is available at Aetrix Electronics and suitable for Bluetooth modules, USB peripherals, notebook subsystems, and digital camera sensor bias rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6472TA15AD3+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 high-performance analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, automotive, and portable systems.
The MAX6469–MAX6484 product line targets battery-powered portable electronics needing integrated power regulation and reset supervision in minimal footprint - emphasizing ultra-low IQ, tight output accuracy, and robust fault protection.
FAQ
What is the function of the SET pin on the MAX6472TA15AD3+T?
The SET pin on the MAX6472TA15AD3+T serves as the feedback reference node. In its default configuration (as indicated by the 'TA' suffix), SET is internally connected to a 1.229V reference and tied to GND to enable fixed 1.5V output. It remains uncommitted for adjustable operation but is not used in this specific variant - no external resistors are required for nominal 1.5V regulation.
Does the MAX6472TA15AD3+T support manual reset functionality?
Yes, the MAX6472TA15AD3+T supports manual reset via its MR (Manual Reset) pin (Pin 3). A logic-low pulse on MR asserts the open-drain RESET output for the full 150ms timeout period, regardless of VOUT status. The MR pin includes a 40kΩ internal pullup to VOUT, eliminating the need for external components in basic pushbutton implementations.
What is the maximum input voltage rating for the MAX6472TA15AD3+T?
The MAX6472TA15AD3+T has an absolute maximum input voltage rating of +7V on the IN pin, but its functional operating range is specified from +2.5V to +5.5V. Operation above +5.5V violates the recommended conditions and may compromise output accuracy, dropout performance, or long-term reliability - always maintain VIN within 2.5V–5.5V for compliant operation.
How does the MAX6472TA15AD3+T behave during battery removal or backup scenarios?
When the main IN supply is removed, the MAX6472TA15AD3+T enters backup mode: OUT can sustain load from a supercapacitor or coin cell, while RESET asserts to place downstream logic into safe state. Reverse OUT-to-IN leakage is limited to 0.01µA (typ), preventing backup source discharge. Shutdown must remain high (>0.7×VOUT) to maintain regulation integrity during this condition.
Is the MAX6472TA15AD3+T RoHS-compliant and lead-free?
Yes, the MAX6472TA15AD3+T is RoHS-compliant and lead-free. The '+T' suffix explicitly denotes the lead(Pb)-free/RoHS-compliant version per Maxim's ordering convention. It is qualified for reflow soldering at +260°C (JEDEC J-STD-020) and features matte-tin terminations compatible with standard Pb-free assembly processes.
MAX6472TA15AD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- 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 (1.5V)
- 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)
MAX6472TA15AD3+T FAQ
1.How can I place an order for MAX6472TA15AD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6472TA15AD3+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 MAX6472TA15AD3+T reliable?
The price and inventory of MAX6472TA15AD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6472TA15AD3+T is usually 5 days.
3.What payment methods are accepted for MAX6472TA15AD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6472TA15AD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6472TA15AD3+T?
MAX6472TA15AD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6472TA15AD3+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 MAX6472TA15AD3+T?
For technical support, including MAX6472TA15AD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6472TA15AD3+T requirements.
6.How does Aetrix verify that MAX6472TA15AD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6472TA15AD3+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 MAX6472TA15AD3+T meets industry standards.
7.What is the process for return or replacement of MAX6472TA15AD3+T?
All MAX6472TA15AD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6472TA15AD3+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 MAX6472TA15AD3+T part is unused and in its original packaging.
Return procedure for MAX6472TA15AD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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