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Analog Devices Inc./Maxim Integrated MAX6471TA15BD3+
- Part No.:
- MAX6471TA15BD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX6471TA15BD3+.pdf
- Description:
- 300MA, LDO LINEAR REGULATOR WITH
- Quantity:
- Payment:
- Shipping:
Inventory:1,322
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Product details
Overview
MAX6471TA15BD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed +1.5V output, -12.5% reset threshold, and 150ms minimum reset timeout. It features 82µA quiescent current, 55mV dropout at 150mA, and operates across -40°C to +85°C. Designed for battery-powered portable equipment including Bluetooth modules and digital cameras.
For engineers reviewing the MAX6471TA15BD3+ datasheet, MAX6471TA15BD3+ pinout, MAX6471TA15BD3+ application, or MAX6471TA15BD3+ equivalent, key selection criteria include its manual reset input (MR), open-drain active-low RESET output, 8-pin TDFN package, and guaranteed 300mA output under ±2.0% voltage accuracy over temperature.
Technical Context
The MAX6471TA15BD3+ integrates a precision LDO regulator core and independent reset supervisor sharing the same reference. Its MR pin enables external assertion of reset while VOUT remains within specification, with internal 40kΩ pullup to VOUT and 1µs minimum pulse width support.
Reset logic asserts active-low RESET for ≥150ms after MR transitions high or after VOUT recovers above the -12.5% threshold. The device uses an internal pass transistor with thermal shutdown at +180°C and reverse current protection limiting OUT-to-IN leakage to 0.01µA typ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +1.5V fixed, preset via internal resistor divider - eliminates external feedback components. |
| Max Output Current | 300mA guaranteed - supports moderate-power microcontrollers and peripherals without external boost. |
| Dropout Voltage | 55mV at 150mA - enables operation with minimal VIN–VOUT headroom, e.g., 1.55V input for 1.5V output. |
| Quiescent Current | 82µA typical - extends battery life in always-on portable systems such as wireless sensors. |
| Reset Threshold | -12.5% of VOUT (1.3125V) - ensures robust brownout detection before microprocessor malfunction. |
| Reset Timeout | 150ms minimum - satisfies boot timing requirements for ARM Cortex-M and similar MCUs. |
| Shutdown Current | 0.1µA typical - reduces system standby power to nanoampere levels when SHDN is asserted. |
| Operating Temp | -40°C to +85°C - qualified for industrial and consumer portable environments without derating. |
Pinout & Package
MAX6471TA15BD3+ is housed in an 8-pin TDFN package (3mm × 3mm, 0.5mm pitch) with exposed paddle thermally connected to GND. Pin 1 is IN; Pin 2 is GND; Pin 3 is SHDN; Pin 4 is RESET; Pin 5 is MR; Pin 6 is OUT; Pins 7–8 are NC (no internal connection); Exposed paddle must be soldered to PCB ground plane for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input supply | Bypass with 0.1µF ceramic capacitor to GND - critical for stability and transient response. |
| 2 (GND) | Power and thermal reference | Primary ground return path and heatsink - must connect to large copper area for thermal dissipation. |
| 3 (SHDN) | Active-low shutdown control | Pulled high to VIN for normal operation; pulling low disables regulator and reduces IQ to 0.1µA. |
| 4 (RESET) | Active-low reset output | Open-drain configuration - requires external pullup; asserts during power-up, brownout, or MR activation. |
| 5 (MR) | Manual reset input | Active-low; internally pulled up to VOUT (40kΩ typ) - enables hardware reset button without external components. |
| 6 (OUT) | Regulated output | Delivers +1.5V at up to 300mA - bypass with ≥3.3µF low-ESR ceramic capacitor to GND. |
| 7–8 (NC) | No internal connection | Not bonded; electrically isolated - may be left floating or tied to GND for mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated manual reset input (MR) | Enables pushbutton-initiated system reset without external supervisor IC or debounce circuitry. |
| Open-drain active-low RESET | Allows wired-OR connection with other reset sources and compatibility with diverse µP reset input architectures. |
| 150ms reset timeout | Meets JEDEC JESD78 requirement for minimum reset assertion time during power recovery. |
| Reverse current protection | 0.01µA max OUT-to-IN leakage prevents backfeeding into primary battery during backup operation. |
| Thermal shutdown with hysteresis | Shuts down at +180°C and re-enables at +160°C - protects against sustained overload without latch-up. |
| ±2.0% output accuracy over temp | Ensures reliable operation of 1.5V I/O domains across full industrial temperature range without calibration. |
Applications
| Bluetooth Module Power Management | Digital Camera Core Logic Supply |
|---|---|
Use Scenario: Powers baseband processor and RF transceiver in compact Bluetooth audio devices with single-cell Li-ion input. IC Role / Device Role / Timing Role: Primary 1.5V LDO with integrated reset supervision - replaces discrete reset IC and simplifies BOM. Use Value: 82µA quiescent current extends playback time; MR pin enables factory test mode entry via shorting switch. | Use Scenario: Supplies image signal processor (ISP) and memory interface in ultra-thin digital cameras. IC Role / Device Role / Timing Role: Fixed-output LDO with 150ms reset timeout - ensures clean boot sequence after lens motor power-up transients. Use Value: 55mV dropout allows operation down to 1.55V input, maximizing usable battery voltage range. |
| Handheld Instrument MCU Supply | USB Peripheral Controller Power |
Use Scenario: Delivers stable 1.5V to ARM Cortex-M4 MCU in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Regulator + supervisor combo - monitors VOUT and asserts RESET if voltage sags during analog measurement bursts. Use Value: -12.5% reset threshold provides margin against noise-induced false resets while ensuring timely fault response. | Use Scenario: Powers USB 2.0 transceiver and embedded controller in bus-powered dongles and adapters. IC Role / Device Role / Timing Role: 1.5V supply with manual reset - enables host-triggered recovery from USB suspend/resume failures. Use Value: MR pin accepts 3.3V logic-level signals directly; open-drain RESET interfaces cleanly with USB PHY reset inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79915YZTT | Fixed 1.5V output, no MR pin, 200ms reset timeout, 100µA IQ, SOT-23-6 package | Lacks manual reset capability; suited for simpler systems where only power-on reset is required | Select when board space is constrained and MR functionality is unnecessary |
| ADP160AUJZ-1.5-R7 | Fixed 1.5V output, no reset function, 850nA IQ, 120mV dropout at 150mA, TSOT-5 package | Requires external reset IC (e.g., ADM6315) - increases component count and layout complexity | Select only when ultra-low quiescent current dominates over integration benefits |
Compared with TPS79915YZTT and ADP160AUJZ-1.5-R7, MAX6471TA15BD3+ uniquely combines manual reset input, 150ms timeout, and 8-pin TDFN packaging - enabling compact, self-contained reset supervision without compromising thermal performance or battery runtime.
Availability
MAX6471TA15BD3+ is available at Aetrix Electronics and suitable for Bluetooth modules, digital cameras, handheld instruments, and USB peripherals requiring stable component supply with integrated reset functionality and industrial temperature support.
Supply support for MAX6471TA15BD3+ 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, automotive, and portable applications.
The MAX6469–MAX6484 product line delivers highly integrated LDO regulators with embedded reset supervisors - targeting battery-powered systems where space, power efficiency, and reliability are critical.
FAQ
What is the reset timeout duration for MAX6471TA15BD3+?
The MAX6471TA15BD3+ has a 150ms minimum reset timeout period (D3 suffix). This duration begins after VOUT rises above the -12.5% threshold or after MR transitions high, and ensures sufficient hold time for microprocessor initialization. The actual timeout is typically 225ms at +25°C and remains within 150ms to 300ms across -40°C to +85°C per datasheet Table 3.
Does MAX6471TA15BD3+ support adjustable output voltage?
No, MAX6471TA15BD3+ is a fixed-output device delivering +1.5V. It belongs to the MAX6471–MAX6474/MAX6479–MAX6482 subgroup, which uses the MR pin instead of SET/FB - eliminating adjustable output capability. For adjustable versions, consider MAX6469–MAX6472 or MAX6477–MAX6480 with SET pin functionality.
What package type is used for MAX6471TA15BD3+?
MAX6471TA15BD3+ uses an 8-pin TDFN package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad. This package offers superior thermal performance versus SOT-23-6 (1951mW vs. 727mW PD at +70°C) and is compatible with standard reflow profiles per JEDEC J-STD-020.
How does the manual reset (MR) pin function on MAX6471TA15BD3+?
The MR pin on MAX6471TA15BD3+ is an active-low input with internal 40kΩ pullup to VOUT. Pulling MR low asserts RESET immediately, even if VOUT is within specification. RESET remains low for the full 150ms timeout after MR returns high. This enables hardware reset buttons, test-mode entry, or watchdog-triggered recovery without external components.
What is the maximum input voltage rating for MAX6471TA15BD3+?
MAX6471TA15BD3+ has an absolute maximum input voltage rating of +7V on the IN pin. However, the recommended operating range is +2.5V to +5.5V per electrical characteristics. Operating above +5.5V risks exceeding safe power dissipation limits and violates specified conditions for dropout, accuracy, and PSRR performance.
MAX6471TA15BD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6471TA15BD3+ FAQ
1.How can I place an order for MAX6471TA15BD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6471TA15BD3+ 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 MAX6471TA15BD3+ reliable?
The price and inventory of MAX6471TA15BD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6471TA15BD3+ is usually 5 days.
3.What payment methods are accepted for MAX6471TA15BD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6471TA15BD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6471TA15BD3+?
MAX6471TA15BD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6471TA15BD3+ 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 MAX6471TA15BD3+?
For technical support, including MAX6471TA15BD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6471TA15BD3+ requirements.
6.How does Aetrix verify that MAX6471TA15BD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6471TA15BD3+ 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 MAX6471TA15BD3+ meets industry standards.
7.What is the process for return or replacement of MAX6471TA15BD3+?
All MAX6471TA15BD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6471TA15BD3+, 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 MAX6471TA15BD3+ part is unused and in its original packaging.
Return procedure for MAX6471TA15BD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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