My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6473TA30AD3+
- Part No.:
- MAX6473TA30AD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6473TA30AD3+.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,244
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6473TA30AD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 3.0V output, -12.5% reset threshold, and 150ms minimum reset timeout. It features 82µA quiescent current, 114mV dropout at full load, and active-low push-pull RESET output. Designed for battery-powered portable systems requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6473TA30AD3+ datasheet, MAX6473TA30AD3+ pinout, MAX6473TA30AD3+ application, or MAX6473TA30AD3+ equivalent, this device delivers verified 3.0V regulation, guaranteed 300mA output, ±2.0% voltage accuracy over temperature, and integrated reset supervision - eliminating external supervisor ICs in space-constrained embedded designs.
Technical Context
The MAX6473TA30AD3+ integrates a precision LDO regulator core with a dedicated reset supervisor sharing the same reference. Its shutdown input (SHDN) enables ultra-low 0.1µA standby current, while the reset circuit asserts active-low RESET for ≥150ms after VOUT rises above 87.5% of nominal (2.625V), ensuring stable clock and supply conditions before processor boot.
This variant belongs to the MAX6473–MAX6474 subgroup: it includes SHDN but no MR pin, uses SET for fixed-output configuration (SET = GND), and employs push-pull RESET output. It is not equipped with remote sense (FB) or manual reset (MR) functionality - distinguishing it from MAX6475/MAX6479 variants.
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 3.0V microcontrollers and peripherals. |
| Max Output Current | 300mA guaranteed - sufficient to power ARM Cortex-M0+ MCUs, Bluetooth SoCs, or sensor hubs without external pass devices. |
| Dropout Voltage | 114mV at 300mA - enables operation down to VIN = 3.114V, supporting single-cell Li-ion or 3× alkaline battery inputs. |
| Quiescent Current | 82µA typical - extends battery life in always-on monitoring applications such as wireless sensors or wearables. |
| Reset Threshold | -12.5% of VOUT (2.625V min) - meets JEDEC JESD8-12A brownout detection requirements for 3.0V systems. |
| Reset Timeout | 150ms minimum - satisfies Intel/AMD processor reset hold-time specifications and avoids spurious reboots during transient dips. |
| Shutdown Current | 0.1µA typical - enables true zero-power sleep states in portable equipment with host-controlled power gating. |
Pinout & Package
MAX6473TA30AD3+ is housed in an 8-pin TDFN-EP (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad. The EP pad must be soldered to PCB ground plane for thermal management and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator Input | Accepts 2.5V–5.5V input; requires 0.1µF ceramic bypass to GND for stability and noise rejection. |
| 2 (GND) | Ground / Thermal Pad Anchor | Primary return path and heatsink; must connect to large copper area or internal ground plane. |
| 3 (SHDN) | Active-Low Shutdown Control | Pulled high to IN for normal operation; pulling low disables regulator and reduces IQ to 0.1µA. |
| 4 (RESET) | Active-Low Push-Pull Reset Output | Drives low during power-up, brownout, or shutdown; deasserts only after VOUT ≥2.625V and 150ms timeout expires. |
| 5 (SET) | Feedback Configuration Pin | Connected to GND to select fixed 3.0V output; floating or driven invalidates regulation. |
| 6 (OUT) | Regulated Output | Delivers up to 300mA at 3.0V; requires ≥3.3µF low-ESR ceramic capacitor to GND for loop stability. |
| 7–8 (EP) | Exposed Thermal Pad | Internally tied to GND; provides low-θJA thermal path - must be soldered to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Microprocessor Reset | Eliminates need for discrete supervisor IC - reduces BOM count and board area in compact portable designs. |
| Low Dropout at Full Load | 114mV @ 300mA enables >95% efficiency at 3.0V output with 3.3V input - critical for battery runtime optimization. |
| Thermal & Short-Circuit Protection | Auto-recovering thermal shutdown at +180°C and 450mA current limit prevent damage during fault conditions. |
| Reverse Current Blocking | 0.01µA typical OUT-to-IN leakage prevents backup battery discharge when main supply is removed. |
| Input Voltage Range | 2.5V–5.5V supports wide input sources including USB, Li-ion, and multi-cell alkaline batteries. |
Applications
| Handheld Medical Sensors | USB-Powered IoT Gateways |
|---|---|
Use Scenario: Continuous glucose monitor with BLE radio operating from coin-cell battery. IC Role / Device Role / Timing Role: Primary 3.0V power rail regulator and system reset supervisor during cold start and battery insertion. Use Value: 82µA quiescent current extends shelf life; 150ms reset timeout ensures BLE controller initializes only after stable 3.0V rail and crystal oscillator settle. |
Use Scenario: Industrial edge gateway drawing power from USB 2.0 port while managing multiple sensor nodes. IC Role / Device Role / Timing Role: Local 3.0V LDO for MCU and RF transceiver, with RESET coordinating boot sequence across subsystems. Use Value: 114mV dropout allows operation even when USB voltage sags to 3.114V; SHDN enables host-controlled deep-sleep entry. |
| Portable Barcode Scanners | Smart Wearable Displays |
Use Scenario: Battery-operated laser scanner with motion-triggered wake-up and rapid boot. IC Role / Device Role / Timing Role: Main power regulator and reset source for ARM-based imaging SoC and laser driver. Use Value: 0.1µA shutdown current enables <1µA system standby; -12.5% reset threshold prevents false resets during brief motor-induced voltage dips. |
Use Scenario: OLED smartwatch with ambient light sensing and haptic feedback. IC Role / Device Role / Timing Role: Stable 3.0V supply for display driver IC and touch controller, with synchronized reset assertion. Use Value: ±2.0% output accuracy maintains consistent OLED brightness; push-pull RESET drives display controller's nRST directly without pull-up resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6473TA30AD4+ | Same 3.0V output and -12.5% reset threshold, but 1200ms reset timeout instead of 150ms. | Suitable for systems requiring longer reset hold time (e.g., FPGA configuration loading). | Select MAX6473TA30AD4+ only if extended reset duration is required; otherwise MAX6473TA30AD3+ matches standard µP timing. |
| TPS76330QDBVRQ1 | 300mA LDO with 3.0V output and 120ms reset timeout, but no SHDN pin and ±3% accuracy. | Lacks shutdown control and has looser voltage tolerance - less suitable for ultra-low-power or precision analog subsystems. | Use only in cost-sensitive automotive applications where AEC-Q100 qualification is mandatory and shutdown is unnecessary. |
Compared with MAX6473TA30AD4+, the MAX6473TA30AD3+ offers tighter timing alignment with mainstream microcontrollers; compared with TPS76330QDBVRQ1, it provides superior accuracy, lower quiescent current, and active shutdown control - making it optimal for portable, battery-critical designs.
Availability
MAX6473TA30AD3+ is available at Aetrix Electronics and suitable for handheld medical sensors, USB-powered IoT gateways, portable barcode scanners, and smart wearable displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6473TA30AD3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6469–MAX6484 product line was designed specifically for battery-powered portable electronics needing integrated power regulation and microprocessor supervision in minimal footprint - targeting PDAs, Bluetooth modules, and notebook subsystems.
FAQ
What is the exact output voltage tolerance of the MAX6473TA30AD3+ over temperature?
The MAX6473TA30AD3+ guarantees ±2.0% output voltage accuracy over the full -40°C to +85°C operating range. This specification applies to fixed-output operation with SET tied to GND and covers line, load, and temperature variations. At +25°C, typical accuracy is ±1.1%, and the device maintains monotonic behavior across its entire thermal range - critical for powering ADC references and precision analog circuits alongside digital loads.
Does the MAX6473TA30AD3+ support adjustable output voltage?
No, the MAX6473TA30AD3+ is configured for fixed 3.0V output only. Its SET pin must be connected to GND to enable this mode; leaving SET floating or applying external voltage invalidates regulation. Adjustable output capability is exclusive to MAX6469–MAX6472/MAX6477–MAX6480 variants. For variable outputs, consider MAX6469UT30AD3+ (SOT23-6) or MAX6477TA30AD3+ (UCSP), both of which support resistor-divider programming via SET.
What is the function of the SHDN pin on the MAX6473TA30AD3+?
The SHDN pin on the MAX6473TA30AD3+ is an active-low digital control input that disables the regulator core and reduces total supply current to 0.1µA (typ). When pulled low, it turns off the pass transistor, reference, and control circuitry - enabling true zero-power sleep states. During shutdown, RESET remains asserted until SHDN returns high and VOUT recovers above 2.625V for ≥150ms. Connect SHDN to IN for default operation.
Can the MAX6473TA30AD3+ drive a 300mA load continuously at 3.0V output?
Yes, the MAX6473TA30AD3+ guarantees 300mA continuous output current under all specified conditions: VIN ≥ 3.114V (to maintain 114mV dropout), TA ≤ +85°C, and proper PCB thermal design (including soldered EP pad to ground plane). Derating is required above +70°C ambient - power dissipation must stay within the 1951mW limit for the TDFN package, with 24.4mW/°C derating above that point.
Is the RESET output on the MAX6473TA30AD3+ push-pull or open-drain?
The RESET output on the MAX6473TA30AD3+ is push-pull active-low. It actively drives low during reset assertion and actively pulls high (to VOUT level) when deasserted - eliminating the need for an external pull-up resistor. This differs from open-drain variants like MAX6473UA30AD3+, which require external pull-up for logic-high state. Push-pull operation ensures fast, deterministic rise/fall times essential for synchronous processor reset timing.
MAX6473TA30AD3+ 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, 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)
MAX6473TA30AD3+ FAQ
1.How can I place an order for MAX6473TA30AD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6473TA30AD3+ 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 MAX6473TA30AD3+ reliable?
The price and inventory of MAX6473TA30AD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6473TA30AD3+ is usually 5 days.
3.What payment methods are accepted for MAX6473TA30AD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6473TA30AD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6473TA30AD3+?
MAX6473TA30AD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6473TA30AD3+ 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 MAX6473TA30AD3+?
For technical support, including MAX6473TA30AD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6473TA30AD3+ requirements.
6.How does Aetrix verify that MAX6473TA30AD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6473TA30AD3+ 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 MAX6473TA30AD3+ meets industry standards.
7.What is the process for return or replacement of MAX6473TA30AD3+?
All MAX6473TA30AD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6473TA30AD3+, 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 MAX6473TA30AD3+ part is unused and in its original packaging.
Return procedure for MAX6473TA30AD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6473TA30AD3+ Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
