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Analog Devices Inc./Maxim Integrated MAX6472TA15AD3
- Part No.:
- MAX6472TA15AD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6472TA15AD3.pdf
- Description:
- IC REG LINEAR LDO 300MA
- Quantity:
- Payment:
- Shipping:
Inventory:1,274
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Product details
Overview
MAX6472TA15AD3 from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, preset +1.5V output, -12.5% reset threshold accuracy, and 150ms minimum 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 MAX6472TA15AD3 datasheet, MAX6472TA15AD3 pinout, MAX6472TA15AD3 application, or MAX6472TA15AD3 equivalent, key selection considerations include its fixed +1.5V output, manual reset input (MR), shutdown capability, thermal/short-circuit protection, and operation across -40°C to +85°C.
Technical Context
The MAX6472TA15AD3 integrates a precision LDO regulator core with a dedicated reset supervisor sharing the same reference voltage. Its MR pin enables external assertion of reset while VOUT remains within specification, and SHDN provides active-low digital shutdown reducing supply current to 0.1µA.
This variant belongs to the MAX6471–MAX6474/MAX6479–MAX6482 subgroup, confirmed by MR presence and absence of FB/SET dual-mode functionality. It uses the -12.5% reset threshold (suffix 'B') and D3 timeout (150ms min), with fixed +1.5V output (suffix '15').
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +1.5V fixed - eliminates need for external feedback resistors in standard applications. |
| Max Output Current | 300mA - sufficient to power microcontrollers, RF transceivers, and sensor subsystems directly. |
| Dropout Voltage | 55mV at 150mA - enables stable regulation even with tight VIN–VOUT margins (e.g., 1.8V IN → 1.5V OUT). |
| Quiescent Current | 82µA - extends battery life in always-on portable devices such as handheld instruments. |
| Reset Threshold | -12.5% of VOUT (1.3125V) - ensures robust brownout detection before microprocessor malfunction. |
| Reset Timeout | 150ms (min) - guarantees sufficient hold-off time for clock stabilization and memory initialization. |
| Shutdown Current | 0.1µA (typ) - supports ultra-low-power sleep modes without external disconnect circuitry. |
| Operating Temp | -40°C to +85°C - qualified for industrial and consumer portable environments without derating. |
Pinout & Package
MAX6472TA15AD3 is housed in an 8-pin TDFN-EP package (3mm × 3mm, 0.75mm height) with exposed paddle electrically connected to GND for enhanced thermal dissipation.
| 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. |
| 2 (GND) | Ground / Thermal Pad | Primary ground return and thermal path; must be soldered to PCB ground plane. |
| 3 (MR) | Manual Reset Input | Active-low; internal 40kΩ pullup to VOUT; asserts RESET when pulled low, even if VOUT is valid. |
| 4 (RESET) | Active-Low Reset Output | Push-pull configuration; drives low during power-up, brownout, or MR assertion for ≥150ms. |
| 5 (SET) | Feedback Reference Input | Connected to GND for fixed +1.5V mode; not used for adjustment in this variant. |
| 6 (OUT) | Regulated Output | Delivers +1.5V @ up to 300mA; requires ≥3.3µF low-ESR ceramic output capacitor. |
| 7–8 (EP) | Exposed Paddle | Internally tied to GND; mandatory connection to PCB ground plane for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Manual Reset (MR) | Enables system-level reset initiation without processor involvement-critical for field service and test modes. |
| 150ms Minimum Reset Timeout | Guarantees sufficient delay for oscillator startup and memory controller initialization before CPU release. |
| 0.1µA Shutdown Current | Reduces system standby power to nanoampere levels-enables multi-year battery life in IoT edge sensors. |
| Reverse Current Protection | 0.01µA typical OUT-to-IN leakage prevents backup power sources from back-feeding into depleted batteries. |
| Thermal & Short-Circuit Protection | Auto-shutdown at +180°C junction temperature with 20°C hysteresis-prevents permanent damage under fault conditions. |
Applications
| Bluetooth Module Power | Digital Camera Core Logic |
|---|---|
|
Use Scenario: Powers baseband processor and RF transceiver in compact Bluetooth headsets with single-cell Li-ion supply. IC Role / Device Role / Timing Role: Primary 1.5V LDO with integrated reset supervision ensuring clean boot after battery insertion or wake-from-sleep. Use Value: Eliminates discrete supervisor IC and reduces BOM count by one component while maintaining 150ms reset hold time for radio calibration. |
Use Scenario: Supplies image signal processor (ISP) and memory interface in ultra-thin digital cameras operating from 3.0V–4.2V battery range. IC Role / Device Role / Timing Role: Fixed-output LDO with MR pin enabling hardware-triggered reset during lens error recovery or firmware update rollback. Use Value: MR functionality allows camera firmware to initiate safe restart without software-controlled GPIO, improving reliability during mechanical faults. |
| Handheld Test Instrument | USB Peripheral Controller |
|
Use Scenario: Regulates power for microcontroller and analog front-end in portable multimeters with auto-ranging and data logging. IC Role / Device Role / Timing Role: Low-quiescent LDO with shutdown control synchronizing power-down with display backlight off. Use Value: 82µA IQ and 0.1µA shutdown current extend alkaline battery life beyond 12 months in typical usage patterns. |
Use Scenario: Provides stable 1.5V supply to USB 2.0 transceiver and embedded controller in bus-powered hubs and adapters. IC Role / Device Role / Timing Role: Reset supervisor ensures USB enumeration only begins after VBUS stabilization and PHY lock. Use Value: Integrated -12.5% reset threshold prevents enumeration failures caused by marginal VDD dips during hot-plug transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6472TA15BD3 | Same package, pinout, and electrical specs; differs only in reset threshold accuracy (-12.5% vs. -7.5%). | Suitable where tighter reset window is required (e.g., high-speed processors with narrow VDD tolerance). | Select MAX6472TA15BD3 only if system timing margin demands earlier reset assertion. |
| TPS76315QDBVRQ1 | Automotive-grade 1.5V LDO (300mA) with 120ms reset timeout; no MR pin; higher IQ (110µA); SOT-23-6 package. | Lacks manual reset and shutdown; suited for cost-sensitive automotive body electronics without field-service requirements. | Choose TPS76315QDBVRQ1 only for AEC-Q100-compliant designs where MR and ultra-low IQ are nonessential. |
Compared with MAX6472TA15AD3, MAX6472TA15BD3 offers identical functionality with stricter reset threshold, while TPS76315QDBVRQ1 trades MR/shutdown for automotive qualification and smaller footprint-neither is pin-compatible, requiring layout revision.
Availability
MAX6472TA15AD3 is available at Aetrix Electronics and suitable for Bluetooth modules, digital cameras, handheld test instruments, and USB peripherals requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX6472TA15AD3 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 communications in portable and industrial systems.
The MAX6469–MAX6484 family was engineered specifically for space-constrained, battery-operated devices needing combined regulation and reliable reset supervision in a single 8-pin TDFN package.
FAQ
What is the function of the MR pin on the MAX6472TA15AD3?
The MR (Manual Reset) pin on the MAX6472TA15AD3 is an active-low input that forces the RESET output low when asserted-even if the +1.5V output is within specification. It features a 40kΩ internal pullup to VOUT and supports TTL/CMOS logic levels. This enables hardware-initiated resets for field service, test modes, or fault recovery without processor intervention. The MAX6472TA15AD3 holds RESET low for the full 150ms timeout after MR returns high.
Does the MAX6472TA15AD3 support adjustable output voltage?
No, the MAX6472TA15AD3 does not support adjustable output voltage. It is configured for fixed +1.5V output via internal resistor divider. Although it includes a SET pin, that pin is internally connected to GND in this variant per Maxim's ordering convention ('15' suffix = 1.5V). For adjustable operation, select MAX6469–MAX6472 variants with different suffixes or use MAX6475/MAX6476 with FB pin.
What is the maximum input voltage rating for the MAX6472TA15AD3?
The MAX6472TA15AD3 has an absolute maximum input voltage rating of +7V on the IN pin, but its operational input voltage range is specified from +2.5V to +5.5V. Operation outside the 2.5V–5.5V range may cause regulation failure or exceed thermal limits. The device also includes undervoltage lockout (UVLO) that disables regulation below ~2.47V to prevent unstable startup behavior.
How does the MAX6472TA15AD3 behave during battery removal in backup-power configurations?
When the main IN supply is removed, the MAX6472TA15AD3 enters reverse-current protection mode: OUT-to-IN leakage drops to 0.01µA typical, preventing backup capacitors or batteries from discharging into the dead input rail. RESET asserts immediately, signaling the system to enter low-power state. If SHDN is pulled high (e.g., via diode to VOUT), the device draws only 40µA from OUT-enabling supercapacitor hold-up for volatile memory retention until backup voltage decays below RAM specifications.
Is the MAX6472TA15AD3 RoHS-compliant and lead-free?
Yes, the MAX6472TA15AD3 is manufactured in lead(Pb)-free/RoHS-compliant packaging. Maxim specifies this by substituting '+T' for '-T' in the orderable part number (e.g., MAX6472TA15AD3+T). The device meets JEDEC J-STD-020D reflow profile requirements for lead-free assembly, with peak solder temperature up to +260°C. The exposed paddle is nickel-palladium-gold plated for reliable solder wetting.
MAX6472TA15AD3 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:
- 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 FAQ
1.How can I place an order for MAX6472TA15AD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6472TA15AD3 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 reliable?
The price and inventory of MAX6472TA15AD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6472TA15AD3 is usually 5 days.
3.What payment methods are accepted for MAX6472TA15AD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6472TA15AD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6472TA15AD3?
MAX6472TA15AD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6472TA15AD3 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?
For technical support, including MAX6472TA15AD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6472TA15AD3 requirements.
6.How does Aetrix verify that MAX6472TA15AD3 is sourced from the original manufacturer or authorized distributors?
All MAX6472TA15AD3 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 meets industry standards.
7.What is the process for return or replacement of MAX6472TA15AD3?
All MAX6472TA15AD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6472TA15AD3, 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 part is unused and in its original packaging.
Return procedure for MAX6472TA15AD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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