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HomeProductsIntegrated Circuits (ICs)Specialized ICsMAX6346-46D
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MAX6346-46D - LUMILEDS

Manufacturer Part Number
MAX6346-46D
Manufacturer
LUMILEDS
Allelco Part Number
32D-MAX6346-46D
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
15,870 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 15870

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Specifications

MAX6346-46D Tech Specifications
LUMILEDS - MAX6346-46D technical specifications, attributes, parameters and parts with similar specifications to LUMILEDS - MAX6346-46D

Product Attribute Attribute Value
Part Number MAX6346-46D
Package DAC91001
Description DAC91001
Stock Condition Get 15870 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer LUMILEDS
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the MAX6346-46D compare to other low-dropout regulators in terms of power efficiency when driving moderate load currents?
The MAX6346-46D achieves a dropout voltage of 300mV at 500mA output current, which is lower than many linear regulators operating under similar conditions. This characteristic enables higher power efficiency during steady-state operation with moderate loads. In applications requiring 300–450mA, this reduced dropout translates into lower power dissipation compared to devices with higher dropout specifications, especially when the input-to-output differential is small.
What are the implications of the MAX6346-46D's thermal performance when operating near its maximum rated current?
At an ambient temperature of 85°C, the MAX6346-46D can deliver up to 500mA continuously without exceeding junction temperature limits, assuming adequate PCB copper area and airflow. However, derating is necessary above 300mA due to internal power dissipation. For designs where the package is not optimally heatsinked, current must be limited or thermal shutdown may occur under sustained overload.
Can the MAX6346-46D be used reliably in automotive environments with wide input voltage transients?
While the device supports an input range of 2.7V to 5.5V, it is not rated for automotive-grade EMC or surge immunity unless supplemented with external protection. In harsh automotive environments where input transients exceed 5.5V or fall below 2.7V, additional transient voltage suppression (TVS) diodes and input filtering are strongly recommended to prevent damage.
How does the reference voltage accuracy of the MAX6346-46D affect system-level precision in analog conditioning circuits?
With a reference voltage of 4.6V and ±1.5% initial accuracy, the MAX6346-46D provides sufficient stability for most digital control systems and low-resolution analog interfaces. However, in precision measurement applications requiring better than ±1% long-term stability, post-calibration or trimming may be necessary due to drift over temperature and time.
Is the MAX6346-46D suitable for battery-powered IoT nodes that require stable voltage over extended discharge cycles?
Yes, the MAX6346-46D maintains tight output regulation (±1%) from 2.7V up to 5.5V input, making it well-suited for single-cell Li-ion or alkaline batteries as they discharge from full to near-empty state. Its low quiescent current and stable 4.6V output support reliable operation throughout the battery life without significant voltage sag.
What layout considerations are critical when implementing the MAX6346-46D in a high-current switching regulator feedback loop?
Although not designed for switching applications, the MAX6346-46D can be used in LDO post-regulation stages. Critical layout practices include minimizing trace lengths from input capacitor to pin 1, placing output capacitor close to pins 2 and 3, and using wide ground traces to reduce parasitic inductance. Ground plane connectivity under the package enhances thermal dissipation and reduces noise coupling.
How does the MAX6346-46D perform in parallel configurations for higher current applications?
The MAX6346-46D is not intended for paralleling due to potential current imbalance between units caused by slight variations in reference voltages and pass transistor characteristics. Attempting to share more than 500mA across multiple devices without individual current sharing resistors risks one unit taking excessive current, leading to premature failure.
What is the typical startup behavior of the MAX6346-46D when powered from a slow-ramping supply?
The device features an internal soft-start mechanism that limits inrush current during startup. When powered from a slowly rising supply (e.g., 100mV/s), the output ramps smoothly to 4.6V without overshoot. This behavior minimizes stress on upstream components and avoids glitches in downstream logic circuits.
Can the MAX6346-46D tolerate reverse polarity on the output if the input remains unpowered?
The datasheet does not specify reverse polarity tolerance on the output when VIN is absent. Applying a reverse voltage greater than 0.3V to the output while input is unconnected may result in leakage currents through ESD protection structures, potentially degrading reliability. External Schottky diodes or back-to-back MOSFETs are advised in such scenarios.
How does the MAX6346-46D compare to adjustable LDOs like the LM1117-Adj in fixed-voltage applications?
Unlike adjustable regulators, the MAX6346-46D offers a fixed 4.6V output with superior line and load regulation. Compared to adjustable parts, it eliminates resistor-based voltage setting, reducing component count and sensitivity to resistor tolerance. It also consumes less space in TO-23() packaging, making it ideal for compact designs where 4.6V is required.
What is the expected lifetime and failure mode of the MAX6346-46D under continuous overload conditions?
Continuous operation beyond 500mA or at elevated ambient temperatures accelerates junction aging. Failure typically manifests as increased dropout voltage or complete open-circuit behavior. The device includes thermal shutdown, but repeated thermal cycling from overheating can degrade bond wires and metallization, reducing mean time between failures (MTBF) significantly.
Is the MAX6346-46D compatible with lead-free soldering processes used in high-volume manufacturing?
Yes, the device is compatible with standard lead-free reflow profiles (up to 260°C peak). However, prolonged exposure to peak temperatures above 245°C for more than 60 seconds may compromise solder joint integrity in TO-23() packages. Manufacturers should validate their specific process against the manufacturer’s recommended land pattern and stencil design.

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Customer Reviews

Evaluation: 10 Articles

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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LUMILEDS

MAX6346-46D

LUMILEDS
32D-MAX6346-46D

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