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Analog Devices Inc./Maxim Integrated MAX6472TA30AD3+
- Part No.:
- MAX6472TA30AD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6472TA30AD3+.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,559
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Product details
Overview
The MAX6472TA30AD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 3.0V output, ±2.0% accuracy over -40°C to +85°C, 114mV dropout at 300mA load, and 150ms minimum reset timeout. It features active-low open-drain RESET, manual reset input (MR), shutdown control (SHDN), and operates from 2.5V to 5.5V input - ideal for battery-powered portable electronics requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6472TA30AD3+ datasheet, MAX6472TA30AD3+ pinout, MAX6472TA30AD3+ application, or MAX6472TA30AD3+ equivalent, key selection considerations include its 150ms reset timeout, MR-enabled manual reset capability, 82µA quiescent current, and compatibility with handheld instruments, Bluetooth modules, and USB devices where supply stability and low-power supervision are critical.
Technical Context
The MAX6472TA30AD3+ integrates a precision LDO regulator core and a dedicated reset supervisor sharing the same reference voltage. Its reset circuit monitors VOUT against a -7.5% threshold (A-suffix) and asserts an active-low open-drain RESET signal for ≥150ms after recovery, eliminating need for external supervisors.
This device belongs to the MAX6471–MAX6474/MAX6479–MAX6482 variant group: it includes MR (manual reset) input with 40kΩ internal pullup to VOUT, SHDN for 0.1µA shutdown current, and SET pin supporting both fixed-output (SET = GND) and adjustable configurations - though fixed 3.0V operation is factory-configured per the "A30" suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2.0% over -40°C to +85°C - ensures stable core logic supply for 3.3V-tolerant microcontrollers without external feedback tuning. |
| Max Output Current | 300mA guaranteed - sufficient to power mid-complexity SoCs, RF transceivers, or sensor subsystems in portable designs. |
| Dropout Voltage | 114mV at 300mA - enables regulation from 3.114V input, supporting single-cell Li-ion (3.0–4.2V) or triple-alkaline (3.6–4.5V) sources. |
| Quiescent Current | 82µA typical - minimizes battery drain during active operation; drops to 0.1µA in shutdown mode. |
| Reset Threshold | -7.5% of nominal VOUT (2.775V) - triggers RESET before microprocessor supply tolerance violation, meeting JEDEC JESD8-12A requirements. |
| Reset Timeout | 150ms minimum - provides adequate stabilization time for clock oscillators and memory initialization before processor release. |
| Input Voltage Range | 2.5V to 5.5V - accommodates wide-input battery chemistries and intermediate rail conversion stages. |
Pinout & Package
MAX6472TA30AD3+ is packaged in an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) with exposed paddle. Pin 1 = IN, Pin 2 = GND, Pin 3 = MR, Pin 4 = RESET, Pin 5 = SET, Pin 6 = OUT, Pins 7–8 = GND (shared), EP = internally connected to GND for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Regulator input | Accepts 2.5V–5.5V supply; requires 0.1µF bypass capacitor to GND for stability. |
| GND (Pins 2, 7, 8, EP) | Power and thermal ground | Primary return path and heatsink; EP must be soldered to PCB ground plane for thermal reliability. |
| MR | Active-low manual reset input | Pulls RESET low when asserted; internal 40kΩ pullup to VOUT eliminates external resistor need. |
| RESET | Active-low open-drain reset output | Drives µP reset line; requires external pullup; asserts during power-up, brownout, or MR activation. |
| SET | Feedback configuration input | Connected to GND for fixed 3.0V output; supports adjustable mode via external resistor divider. |
| OUT | Regulated output | Delivers up to 300mA at 3.0V; requires ≥3.3µF low-ESR ceramic capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated manual reset (MR) | Enables operator- or system-initiated reset without disrupting regulated output - critical for field service and test modes. |
| 150ms reset timeout | Guarantees sufficient delay for oscillator startup and memory initialization before processor release, avoiding race conditions. |
| 0.1µA shutdown current | Extends shelf life and standby time in battery-backed systems by disabling regulator core while retaining MR/RESET functionality. |
| Reverse current protection | 0.01µA typical OUT-to-IN leakage prevents backup capacitor or battery discharge when main supply is removed. |
| Thermal shutdown with hysteresis | Activates at +180°C and re-enables only after 20°C cooldown - protects against sustained overload without latch-up. |
Applications
| Handheld Instruments | Bluetooth Modules |
|---|---|
Use Scenario: Powering ARM Cortex-M based data loggers with real-time clock and SD card interface in field-deployable PDAs. IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying MCU core and analog front-end; RESET ensures deterministic boot after battery insertion or low-voltage recovery. Use Value: 82µA quiescent current extends alkaline battery life beyond 12 months in sleep mode; MR allows on-device firmware reset without disassembly. |
Use Scenario: Regulating power for Class 2 Bluetooth LE transceivers in wearable hearables with coin-cell backup. IC Role / Device Role / Timing Role: Supplies 3.0V to radio IC and baseband processor; RESET synchronizes RF initialization with stable VCC and crystal lock. Use Value: 114mV dropout enables operation down to 3.114V input - maximizing usable capacity from CR2032 (2.0–3.3V range) with backup capacitor hold-up. |
| PCMCIA Cards | USB Peripheral Devices |
Use Scenario: Providing clean 3.0V rail to SmartCard controller and ISO7816 interface in legacy PCMCIA expansion cards. IC Role / Device Role / Timing Role: LDO with MR input accepts host-side reset assertion; RESET output coordinates card initialization sequence with host enumeration. Use Value: Open-drain RESET supports wired-OR with other supervisors; ±2.0% output accuracy meets SmartCard voltage tolerance (±3%) without trimming. |
Use Scenario: Powering USB-to-UART bridge ICs and EEPROM in compact dongles powered directly from USB VBUS (4.75–5.25V). IC Role / Device Role / Timing Role: Converts 5V USB input to 3.0V logic rail; RESET asserts during VBUS removal to force clean device disconnect and prevent enumeration errors. Use Value: 2.5V–5.5V input range eliminates need for pre-regulation; 150ms timeout exceeds USB suspend/resume timing requirements (10ms min). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76330QDBVRQ1 | 300mA LDO with 3.0V fixed output, but no MR input or programmable reset timeout; reset threshold fixed at -10%. | Lacks manual reset capability - unsuitable where field-service reset is required; simpler for basic power-on reset only. | Select if MR functionality is unnecessary and AEC-Q100 automotive qualification is needed (TPS76330QDBVRQ1 is automotive-grade). |
| ADM6315-30ARTZ-RL | Standalone reset supervisor (no LDO); 3.0V threshold, 200ms timeout, push-pull RESET; requires external LDO. | Increases BOM count and board area; offers higher reset accuracy (±1.5%) but no integrated regulation. | Select when higher reset precision is prioritized over integration, or when existing LDO cannot be replaced. |
Compared with TPS76330QDBVRQ1 and ADM6315-30ARTZ-RL, the MAX6472TA30AD3+ uniquely combines MR input, 150ms timeout configurability, and full LDO integration - reducing component count and enabling robust field-service and brownout recovery in space-constrained portable designs.
Availability
MAX6472TA30AD3+ is available at Aetrix Electronics and suitable for handheld instruments, Bluetooth modules, and USB peripheral devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6472TA30AD3+ 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 connectivity applications.
The MAX6469–MAX6484 product line delivers integrated LDO regulators with microprocessor reset for battery-powered portable equipment - emphasizing ultra-low quiescent current, small footprint, and reliable power sequencing.
FAQ
What is the reset threshold accuracy and timeout duration for MAX6472TA30AD3+?
The MAX6472TA30AD3+ uses the "A" reset threshold suffix, corresponding to -7.5% of nominal output voltage (2.775V for 3.0V output), with guaranteed assertion between -5% and -10% deviation. Its "D3" suffix specifies a minimum reset timeout of 150ms, ensuring sufficient time for oscillator stabilization and memory initialization before processor release. This timing is factory-trimmed and does not require external components.
Does MAX6472TA30AD3+ support adjustable output voltage?
Yes, the MAX6472TA30AD3+ supports adjustable output voltage via the SET pin. Though configured for 3.0V fixed output by default (SET = GND), connecting SET to an external resistor divider enables outputs from 1.25V to 5.5V using VOUT = 1.229V × (1 + R1/R2). The internal SET reference is 1.229V ±2.5mV, and R2 = 50kΩ is recommended for optimal stability and PSRR.
How does the manual reset (MR) input function on MAX6472TA30AD3+?
The MR input on MAX6472TA30AD3+ is an active-low signal with internal 40kΩ pullup to VOUT. When pulled low (≤0.3×VOUT), it immediately asserts the open-drain RESET output and holds it low for the full 150ms timeout period after MR returns high. This enables hardware-triggered resets without affecting regulation - essential for test jigs, field service buttons, or watchdog escalation paths.
What package type and thermal characteristics apply to MAX6472TA30AD3+?
The MAX6472TA30AD3+ uses an 8-pin TDFN-EP package (3mm × 3mm, 0.5mm pitch) with exposed paddle. Its thermal resistance θJA is 24.4°C/W, enabling 1951mW max power dissipation at +70°C ambient. The EP must be soldered to a PCB ground plane to achieve rated performance; thermal derating is 24.4mW/°C above +70°C.
Can MAX6472TA30AD3+ operate with input voltage lower than its output voltage?
No - the MAX6472TA30AD3+ is not designed for reverse operation. However, it includes reverse-current protection: when VOUT > VIN, OUT-to-IN leakage is limited to 0.01µA typical, preventing battery backfeed. In such cases, RESET remains asserted until VIN exceeds VOUT and VOUT rises above 2.775V. Shutdown (SHDN) must be held high (>0.7×VOUT) to maintain functionality during reverse bias.
MAX6472TA30AD3+ 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 (3V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 0.19V @ 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)
MAX6472TA30AD3+ FAQ
1.How can I place an order for MAX6472TA30AD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6472TA30AD3+ 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 MAX6472TA30AD3+ reliable?
The price and inventory of MAX6472TA30AD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6472TA30AD3+ is usually 5 days.
3.What payment methods are accepted for MAX6472TA30AD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6472TA30AD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6472TA30AD3+?
MAX6472TA30AD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6472TA30AD3+ 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 MAX6472TA30AD3+?
For technical support, including MAX6472TA30AD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6472TA30AD3+ requirements.
6.How does Aetrix verify that MAX6472TA30AD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6472TA30AD3+ 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 MAX6472TA30AD3+ meets industry standards.
7.What is the process for return or replacement of MAX6472TA30AD3+?
All MAX6472TA30AD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6472TA30AD3+, 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 MAX6472TA30AD3+ part is unused and in its original packaging.
Return procedure for MAX6472TA30AD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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