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Analog Devices Inc./Maxim Integrated MAX6473TA15AD3+
- Part No.:
- MAX6473TA15AD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6473TA15AD3+.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,054
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Product details
Overview
MAX6473TA15AD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, preset +1.5V output, -7.5% reset threshold, and 150ms minimum reset timeout. It features 82µA quiescent current, 55mV dropout at 150mA, and active-low open-drain RESET output. Designed for battery-powered portable equipment including Bluetooth modules and digital cameras.
For engineers reviewing the MAX6473TA15AD3+ datasheet, MAX6473TA15AD3+ pinout, MAX6473TA15AD3+ application, or MAX6473TA15AD3+ equivalent, key selection criteria include guaranteed 300mA output, shutdown current of 0.1µA (typ), ±2.0% output voltage accuracy over temperature, and compatibility with 6-pin SOT23-6 packaging.
Technical Context
The MAX6473TA15AD3+ integrates an LDO regulator core with a precision reset supervisor sharing the same reference voltage. Its regulator operates from 2.5V to 5.5V input and delivers fixed +1.5V output with ±2.0% accuracy across –40°C to +85°C. The reset circuit asserts when VOUT falls below –7.5% of nominal and holds RESET low for ≥150ms after recovery.
This device includes active-low SHDN control reducing supply current to 0.1µA (typ), thermal shutdown at +180°C with 20°C hysteresis, and reverse current protection limiting OUT-to-IN leakage to 0.01µA (typ). It lacks manual reset (MR) and remote sense (FB) pins-features reserved for other variants in the MAX6469–MAX6484 family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +1.5V fixed, ±2.0% accuracy over –40°C to +85°C - ensures stable core logic supply under thermal stress. |
| Max Output Current | 300mA guaranteed - supports moderate-power microcontrollers and peripherals without external boost. |
| Dropout Voltage | 55mV at 150mA load - enables operation down to VIN = 1.555V, critical for single-cell Li-ion or alkaline systems. |
| Quiescent Current | 82µA typical - extends battery life in always-on monitoring circuits such as wireless sensor nodes. |
| Reset Threshold | –7.5% of VOUT (i.e., 1.3875V) - aligns with standard microprocessor supply tolerance requirements. |
| Reset Timeout | 150ms minimum - provides sufficient hold-off time for clock stabilization and memory initialization. |
| Shutdown Current | 0.1µA typical - enables ultra-low-power sleep modes in portable instrumentation. |
| Input Voltage Range | 2.5V to 5.5V - compatible with common battery chemistries and intermediate rail supplies. |
Pinout & Package
MAX6473TA15AD3+ is housed in a 6-pin SOT23-6 package with exposed pad (EP) not present in this variant-only TDFN-EP and UCSP packages include EP. Pin 1 is IN, Pin 2 is GND, Pin 3 is SHDN, Pin 4 is RESET (open-drain, active-low), Pin 5 is SET (tied to GND for fixed +1.5V), and Pin 6 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Bypassed to GND with 0.1µF capacitor; accepts 2.5V–5.5V input; powers internal LDO and reset circuitry. |
| 2 (GND) | Ground reference and thermal path | Must connect to PCB ground plane for electrical integrity and thermal dissipation; dual-purpose pin. |
| 3 (SHDN) | Active-low shutdown control | Pull low to disable regulator and reduce supply current to 0.1µA; pull high (to VIN) for normal operation. |
| 4 (RESET) | Active-low reset output | Open-drain output asserted when VOUT < 1.3875V or SHDN is low; requires external pull-up for µP reset interface. |
| 5 (SET) | Feedback configuration input | Tied to GND to select +1.5V fixed output; floating or resistor-divider enables adjustable mode (not used here). |
| 6 (OUT) | Regulated output | Delivers +1.5V at up to 300mA; bypassed with ≥3.3µF low-ESR capacitor to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated microprocessor reset | Eliminates need for external supervisor IC by providing accurate –7.5% threshold detection and 150ms timeout. |
| Low quiescent current | 82µA typical operating current enables >1-year battery life in coin-cell–powered devices at 10µA average load. |
| Thermal and short-circuit protection | Auto-shutdown at +180°C junction temperature with 20°C hysteresis prevents damage during overload or poor heatsinking. |
| Reverse current protection | 0.01µA typical OUT-to-IN leakage prevents backfeeding into depleted batteries or unintended power sourcing. |
| Low dropout performance | 55mV dropout at 150mA allows operation with minimal headroom-critical for extending runtime in 1.8V/2.5V system rails. |
| Guaranteed 300mA output | Rated minimum output current ensures reliable power delivery to SoCs, RF transceivers, and mixed-signal peripherals. |
Applications
| Handheld Instruments | Bluetooth Modules |
|---|---|
Use Scenario: Powering ARM Cortex-M0+ MCU and analog front-end in portable multimeter with coin-cell backup. IC Role / Device Role / Timing Role: Primary 1.5V LDO supplying core logic and ADC reference; RESET ensures clean boot after battery insertion or brownout. Use Value: 82µA quiescent current extends shelf life; 150ms reset timeout guarantees oscillator lock before firmware execution. |
Use Scenario: Regulating 1.5V supply for BLE SoC (e.g., nRF52832) in wearable fitness tracker. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable rail to radio and CPU; SHDN enables deep-sleep mode with 0.1µA system leakage. Use Value: 55mV dropout preserves battery voltage margin during peak transmit current; open-drain RESET interfaces directly with SoC reset pin. |
| Digital Cameras | PCMCIA Cards |
Use Scenario: Supplying image sensor interface logic and ISP core in compact action camera. IC Role / Device Role / Timing Role: Low-noise 1.5V source for timing-critical pixel readout circuitry; RESET synchronizes sensor initialization sequence. Use Value: ±2.0% output accuracy maintains consistent exposure calibration across temperature; SOT23-6 footprint saves board space. |
Use Scenario: Providing regulated 1.5V to PC Card controller ASIC in legacy laptop expansion slot. IC Role / Device Role / Timing Role: Standby power regulator with SHDN controlled by host-side card-detect signal. Use Value: Input undervoltage lockout (2.25V) prevents erratic behavior during hot-plug insertion; robust ESD tolerance per JEDEC JESD22-A114. |
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 | Fixed +1.5V, 150mA output, no integrated reset, 85µA IQ, SOT23-5 package. | Lacks reset functionality - requires external supervisor IC for µP reset sequencing. | Select when reset is handled separately and lower output current suffices. |
| MIC29302WU | Adjustable or fixed +1.5V, 3A output, no reset, 120µA IQ, TO-263 package. | Higher current capability but larger footprint and no built-in reset supervision. | Choose for high-current applications where external reset circuitry is acceptable. |
Compared with TPS76315QDBVRQ1 and MIC29302WU, MAX6473TA15AD3+ uniquely combines 300mA drive, integrated –7.5% reset with 150ms timeout, and ultra-low 82µA quiescent current in a space-constrained SOT23-6 package-enabling single-chip power and reset management in portable designs.
Availability
MAX6473TA15AD3+ is available at Aetrix Electronics and suitable for handheld instruments, Bluetooth modules, and digital cameras requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6473TA15AD3+ 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.
MAX6473TA15AD3+ belongs to the MAX6469–MAX6484 family of 300mA LDOs with integrated microprocessor reset-engineered specifically for battery-powered portable equipment where low IQ, small size, and reliable power-on reset are essential.
FAQ
What is the output voltage tolerance of MAX6473TA15AD3+ over temperature?
The MAX6473TA15AD3+ guarantees ±2.0% output voltage accuracy over the full operating temperature range of –40°C to +85°C. This specification applies to the fixed +1.5V output and ensures stable logic-level compliance for microcontrollers and sensors across environmental extremes. The tolerance is measured at 1mA ≤ IOUT ≤ 300mA load conditions.
Does MAX6473TA15AD3+ support manual reset (MR) functionality?
No, MAX6473TA15AD3+ does not include a manual reset (MR) input. MR is only present on MAX6471–MAX6474 and MAX6479–MAX6482 variants. MAX6473TA15AD3+ uses SHDN as its sole control input and asserts RESET solely based on VOUT falling below –7.5% threshold or SHDN being pulled low.
What is the minimum input voltage required for MAX6473TA15AD3+ to maintain regulation at 300mA?
At 300mA load, MAX6473TA15AD3+ requires VIN ≥ 1.658V to maintain regulation, calculated from its 114mV dropout voltage at 300mA plus the +1.5V nominal output. However, the absolute minimum specified input is 2.5V per Absolute Maximum Ratings-ensuring proper operation of internal circuitry including the reset supervisor and reference.
Can MAX6473TA15AD3+ be used with a 1.8V input supply?
Yes, MAX6473TA15AD3+ can operate from a 1.8V input supply, provided the load current remains within the dropout-limited region. At 150mA, its dropout is 55mV, so 1.8V input sustains 1.5V output with 245mV margin. At 300mA, 114mV dropout requires VIN ≥ 1.614V-well within 1.8V. Note that 2.5V is the datasheet's recommended minimum for full specification compliance.
Is MAX6473TA15AD3+ RoHS-compliant and lead(Pb)-free?
Yes, MAX6473TA15AD3+ is RoHS-compliant and lead(Pb)-free. The "+" suffix in the part number explicitly denotes the lead-free/RoHS-compliant version per Maxim's ordering convention. It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for reflow soldering per JEDEC JESD22-A113.
MAX6473TA15AD3+ 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, Shutdown
- 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)
MAX6473TA15AD3+ FAQ
1.How can I place an order for MAX6473TA15AD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6473TA15AD3+ 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 MAX6473TA15AD3+ reliable?
The price and inventory of MAX6473TA15AD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6473TA15AD3+ is usually 5 days.
3.What payment methods are accepted for MAX6473TA15AD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6473TA15AD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6473TA15AD3+?
MAX6473TA15AD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6473TA15AD3+ 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 MAX6473TA15AD3+?
For technical support, including MAX6473TA15AD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6473TA15AD3+ requirements.
6.How does Aetrix verify that MAX6473TA15AD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6473TA15AD3+ 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 MAX6473TA15AD3+ meets industry standards.
7.What is the process for return or replacement of MAX6473TA15AD3+?
All MAX6473TA15AD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6473TA15AD3+, 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 MAX6473TA15AD3+ part is unused and in its original packaging.
Return procedure for MAX6473TA15AD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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