My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6471TA33BD3+
- Part No.:
- MAX6471TA33BD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX6471TA33BD3+.pdf
- Description:
- IC REG LIN POS ADJ 300MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,351
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6471TA33BD3+ from Maxim Integrated is a 300mA low-dropout linear regulator with integrated microprocessor reset circuit, fixed 3.3V output, -12.5% reset threshold accuracy, and 150ms minimum reset timeout. It features 82µA quiescent current, 114mV dropout at 300mA load, and active-low manual reset (MR) input-designed for battery-powered portable systems requiring reliable power sequencing and brownout protection.
For engineers reviewing the MAX6471TA33BD3+ datasheet, MAX6471TA33BD3+ pinout, MAX6471TA33BD3+ application, or MAX6471TA33BD3+ equivalent, this device delivers verified reset supervision with manual trigger capability, ultra-low supply current, and guaranteed 300mA output in an 8-pin TDFN-EP package-critical for space-constrained, low-power embedded designs.
Technical Context
The MAX6471TA33BD3+ integrates a precision LDO regulator core with a dedicated reset supervisor sharing the same voltage reference. Its MR input enables external assertion of RESET while VOUT remains within specification, with internal 40kΩ pullup to VOUT and 1µs minimum pulse width support.
This variant belongs to the MAX6471–MAX6474/MAX6479–MAX6482 subgroup, confirming presence of MR pin (Pin 3), push-pull or open-drain RESET (Pin 4), SET-adjustable feedback (Pin 5), and no remote sense (FB) or shutdown (SHDN) functionality-distinguishing it from MAX6469/6470 or MAX6475/6476 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed +3.3V - matches standard I/O rail requirements for microcontrollers and digital logic without external resistors. |
| Reset Threshold Accuracy | −12.5% of VOUT (i.e., 2.8875V) - ensures robust brownout detection before processor malfunction occurs. |
| Reset Timeout Period | 150ms (min) - provides sufficient hold-off time for clock stabilization and memory initialization during power-up. |
| Dropout Voltage | 114mV at 300mA - enables operation down to VIN = 3.414V, supporting single-cell Li-ion or 3× alkaline battery inputs. |
| Supply Current | 82µA (typ) - minimizes battery drain in always-on monitoring states; reduces average system power by >90% vs. discrete supervisor + LDO solutions. |
| Output Current | Guaranteed 300mA - drives moderate-complexity SoCs, RF modules, or sensor subsystems without external boost stages. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and extended commercial environments including handheld instruments and wireless modules. |
Pinout & Package
MAX6471TA33BD3+ is housed in an 8-pin TDFN-EP (3mm × 3mm, 0.75mm height) package with exposed thermal pad (EP), rated for 1951mW max power dissipation at +70°C ambient. The EP must be soldered to PCB ground plane for thermal integrity and EMI reduction.
| 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 transient response. |
| 2 (GND) | Ground / Thermal Sink | Primary return path and thermal conduction interface; must connect to large copper area or internal ground plane. |
| 3 (MR) | Active-Low Manual Reset Input | Pulls RESET low when asserted; internal 40kΩ pullup to VOUT eliminates need for external resistor in basic configurations. |
| 4 (RESET) | Active-Low Reset Output | Push-pull configuration drives µP reset line directly; asserts during power-up, brownout, or MR activation and holds for full 150ms timeout. |
| 5 (SET) | Feedback Reference Input | Connected to GND for fixed 3.3V mode; supports adjustable output via external resistor divider if reconfigured. |
| 6 (OUT) | Regulated Output | Delivers stable 3.3V ±2.0% over temperature; requires ≥3.3µF low-ESR ceramic capacitor at output for loop stability. |
| EP | Exposed Thermal Pad | Internally tied to GND; mandatory connection to PCB ground plane for thermal management and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Microprocessor Reset | Eliminates need for separate supervisor IC-reduces BOM count, board area, and design validation effort. |
| Manual Reset Input (MR) | Enables hardware-triggered system reset without cycling power-essential for field diagnostics, firmware recovery, and test modes. |
| Low Quiescent Current | 82µA typical supply current extends battery life in standby or sleep modes of portable equipment. |
| Thermal & Short-Circuit Protection | Auto-shutdown at +180°C junction temperature with 20°C hysteresis prevents damage during overload or poor heatsinking. |
| Input Reverse Leakage Protection | 0.01µA typ OUT-to-IN leakage prevents reverse battery discharge when external voltage appears at VOUT. |
Applications
| Handheld Instruments | Bluetooth Modules |
|---|---|
Use Scenario: Powering ARM Cortex-M based data loggers in battery-operated multimeters or thermal imagers with on-demand display wake-up. IC Role / Device Role / Timing Role: Primary 3.3V supply regulator and power-good supervisor ensuring clean boot sequence and safe shutdown during low-battery conditions. Use Value: 114mV dropout allows operation until battery reaches ~3.4V, extending usable runtime by >18% vs. higher-dropout alternatives. |
Use Scenario: Supplying baseband processor and BLE radio in compact wearable transceivers with intermittent transmission duty cycles. IC Role / Device Role / Timing Role: Provides regulated 3.3V rail and synchronized reset assertion to prevent RF state corruption during voltage sags. Use Value: 150ms reset timeout exceeds Bluetooth SIG power-up timing requirements (100ms min), guaranteeing reliable link initialization. |
| PCMCIA Cards | Digital Cameras |
Use Scenario: Power management for legacy PC Card peripherals inserted into laptops with variable bus voltage and hot-swap events. IC Role / Device Role / Timing Role: Regulates +3.3V VCC and monitors insertion/removal via MR pin to initiate graceful card reset and state save. Use Value: MR input enables deterministic reset on card detect signal-eliminating race conditions between host enumeration and peripheral readiness. |
Use Scenario: Supplying image sensor interface, ISP, and SD card controller in consumer-grade digital still cameras with AA/AAA battery packs. IC Role / Device Role / Timing Role: Delivers stable 3.3V under pulsed 300mA loads (e.g., flash charging, burst capture) while asserting RESET during brownout. Use Value: Guaranteed 300mA output sustains peak current demands without droop; 82µA IQ preserves battery charge during preview mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6471TA33BD2+ | Same 3.3V output and MR function, but 20ms reset timeout (vs. 150ms). | Suitable for fast-boot systems where shorter reset hold-off is acceptable (e.g., simple MCU-based sensors). | Select MAX6471TA33BD2+ only if 20ms timeout meets system clock stabilization timing; otherwise MAX6471TA33BD3+ is required. |
| TPS76333QDBVRQ1 | 300mA LDO with 3.3V fixed output but no integrated reset or MR input-requires external supervisor IC. | Used in automotive applications where AEC-Q100 qualification is mandatory; lacks manual reset capability. | Choose TPS76333QDBVRQ1 only when AEC-Q100 compliance is required and board space permits discrete reset circuitry. |
Compared with MAX6471TA33BD2+, the MAX6471TA33BD3+ provides longer reset assertion for complex initialization; compared with TPS76333QDBVRQ1, it integrates reset functionality but lacks automotive qualification-making it optimal for cost-sensitive, space-constrained industrial portables.
Availability
MAX6471TA33BD3+ is available at Aetrix Electronics and suitable for handheld instruments, Bluetooth modules, PCMCIA cards, and digital cameras requiring stable component supply, long-term lifecycle support, and guaranteed 300mA output performance across −40°C to +85°C.
Supply support for MAX6471TA33BD3+ 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-emphasizing ultra-low IQ, precise reset thresholds, and flexible reset configuration.
FAQ
What is the reset timeout period for MAX6471TA33BD3+?
The MAX6471TA33BD3+ has a minimum reset timeout period of 150ms, as indicated by the 'D3' suffix in its part number. This duration ensures the RESET signal remains asserted long enough for microprocessor clocks and memory to stabilize after power-up or brownout recovery. The actual timeout may vary slightly with temperature and supply conditions but remains within datasheet-specified limits.
Does MAX6471TA33BD3+ support adjustable output voltage?
Yes, MAX6471TA33BD3+ supports adjustable output voltage via the SET pin (Pin 5). When disconnected from GND and configured with an external resistor divider between OUT, SET, and GND, it can deliver outputs from 1.25V to 5.5V using the formula VOUT = 1.229V × (1 + R1/R2). However, its default configuration is fixed 3.3V when SET is grounded.
What package type is used for MAX6471TA33BD3+?
MAX6471TA33BD3+ uses an 8-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package measuring 3mm × 3mm. The exposed thermal pad (EP) is internally connected to GND and must be soldered to the PCB ground plane to ensure proper thermal dissipation and electrical performance.
How does the manual reset (MR) input function on MAX6471TA33BD3+?
The MR input on MAX6471TA33BD3+ is an active-low signal that asserts the RESET output regardless of VOUT status. When pulled low, it triggers immediate reset assertion and maintains it for the full 150ms timeout after MR returns high. An internal 40kΩ pullup to VOUT eliminates external components unless noise immunity requires a 0.1µF capacitor to GND.
Is MAX6471TA33BD3+ RoHS-compliant and lead-free?
Yes, MAX6471TA33BD3+ is RoHS-compliant and lead-free, as indicated by the '+' suffix in its part number. Maxim Integrated specifies lead(Pb)-free packaging for this device, meeting JEDEC J-STD-020D reflow profile requirements with peak temperature up to +260°C.
MAX6471TA33BD3+ 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 (3.3V)
- Voltage - Output (Max):
- 5.5V
- Voltage Dropout (Max):
- 0.18V @ 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)
MAX6471TA33BD3+ FAQ
1.How can I place an order for MAX6471TA33BD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6471TA33BD3+ 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 MAX6471TA33BD3+ reliable?
The price and inventory of MAX6471TA33BD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6471TA33BD3+ is usually 5 days.
3.What payment methods are accepted for MAX6471TA33BD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6471TA33BD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6471TA33BD3+?
MAX6471TA33BD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6471TA33BD3+ 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 MAX6471TA33BD3+?
For technical support, including MAX6471TA33BD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6471TA33BD3+ requirements.
6.How does Aetrix verify that MAX6471TA33BD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6471TA33BD3+ 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 MAX6471TA33BD3+ meets industry standards.
7.What is the process for return or replacement of MAX6471TA33BD3+?
All MAX6471TA33BD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6471TA33BD3+, 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 MAX6471TA33BD3+ part is unused and in its original packaging.
Return procedure for MAX6471TA33BD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6471TA33BD3+ 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…
