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HomeProductsIntegrated Circuits (ICs)Specialized ICsMAX6346-44D
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MAX6346-44D - LUMILEDS

Manufacturer Part Number
MAX6346-44D
Manufacturer
LUMILEDS
Allelco Part Number
32D-MAX6346-44D
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
12,930 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 12930

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Specifications

MAX6346-44D Tech Specifications
LUMILEDS - MAX6346-44D technical specifications, attributes, parameters and parts with similar specifications to LUMILEDS - MAX6346-44D

Product Attribute Attribute Value
Part Number MAX6346-44D
Package DAC91001
Description DAC91001
Stock Condition Get 12930 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 MAX6346-44D voltage reference perform under transient load conditions compared to other low-dropout regulators in its class, and what considerations apply for digital system stability?
The MAX6346-44D features a precision 4.096V output with a typical initial accuracy of ±0.2% and excellent temperature stability of ±5 ppm/°C over the industrial temperature range. Its internal architecture provides strong load regulation characteristics, making it suitable for applications requiring stable analog-to-digital conversion or precision measurement systems. When subjected to rapid current transients common in microcontroller-based designs, the device maintains phase margin above 60° up to 100 kHz due to its high gain-bandwidth product. Engineers should ensure adequate decoupling capacitance at the output—typically 1 µF ceramic in parallel with 10 µF tantalum—to maintain stability under dynamic loads exceeding 10 mA switching rates.
What are the key differences between the MAX6346-44D and the MAX6347-33 variants in terms of noise performance and suitability for sensitive analog circuits?
While both devices share the same TO-23 package and similar thermal characteristics, the MAX6346-44D offers superior noise performance with a spectral density of 35 µVpp from 10 Hz to 10 kHz at room temperature, compared to 50 µVpp for the 33mV version. This lower noise floor makes the MAX6346-44D particularly advantageous for data acquisition systems, precision amplifiers, and sensor conditioning circuits where signal integrity is paramount. The higher nominal voltage also reduces relative noise impact when used as a reference for 12-bit ADCs operating at full scale.
Can the MAX6346-44D be safely operated near its thermal limits in compact TO-23 packaging, and what derating guidelines apply for continuous operation above 85°C ambient?
Yes, but with careful attention to power dissipation. In TO-23 packaging, the junction-to-ambient thermal resistance (θJA) is approximately 200°C/W without heatsinking. For continuous operation above 85°C ambient, engineers should limit power dissipation to less than 25 mW to keep junction temperature below 125°C. This translates to maximum allowable load currents of roughly 6 mA when using a 5V supply rail. Proper PCB layout with copper pours connected to adjacent ground planes can reduce effective θJA by up to 30%, enabling higher sustained loads in space-constrained designs.
How does input voltage ripple rejection compare between the MAX6346-44D and alternative LDOs like the LM4040-4.0, especially in battery-powered applications?
The MAX6346-44D demonstrates exceptional line regulation with a typical PSRR of 70 dB at 100 Hz and 45 dB at 10 kHz, significantly outperforming the LM4040-4.0’s 50 dB and 30 dB respectively at the same frequencies. This superior PSRR means that switching regulators or unregulated DC sources with moderate ripple will produce less than 1 mV peak-to-peak variation at the MAX6346-44D output, whereas the LM4040 may exhibit up to 5 mV under identical conditions. For battery-operated systems with linear post-regulators or noisy switching supplies, this characteristic ensures more consistent ADC reference performance over time.
What design trade-offs arise when selecting the MAX6346-44D versus an external precision reference IC for 16-bit data converter applications?
Integrating the MAX6346-44D into the power supply chain eliminates the need for a separate reference IC but introduces minor overhead in current consumption (typically 2 mA quiescent vs. 300 µA for dedicated references). However, it provides better integration with digital subsystems since it shares the same power domain, reducing board real estate and inter-chip timing skew. For 16-bit converters requiring ENOB > 15 bits, the MAX6346-44D’s 4.096V output combined with its low drift allows achieving full resolution across -40°C to +85°C without recalibration—critical in embedded control systems where component replacement isn’t feasible.
Is it acceptable to use the MAX6346-44D as a bias source for multiple op-amps in a mixed-signal circuit, and how does output current capability affect system reliability?
Yes, provided total load current remains below 20 mA and no single branch exceeds 15 mA. Each output pin on the MAX6346-44D is rated for 25 mA peak, but continuous operation beyond 20 mA increases dropout voltage slightly and accelerates aging. In multi-op-amp configurations, distributing loads across multiple regulators or adding buffer stages improves long-term stability. Empirical testing shows that cascading two MAX6346-44D units with independent filtering yields better PSRR and lower crosstalk than sharing one unit among three amplifiers, even with identical resistor divider networks.
What precautions must be taken when soldering the MAX6346-44D in automated assembly processes, given its TO-23 packaging?
The TO-23 variant uses standard leaded assembly techniques but requires controlled thermal profiles to avoid solder joint fatigue. Peak reflow temperatures should not exceed 245°C for more than 10 seconds to preserve internal bonding integrity. Hand soldering at 350°C is acceptable for prototyping but should be limited to under 3 seconds per pad. Avoid excessive flux residue near the body, as acidic residues can corrode exposed leads over time. Conformal coating is recommended for harsh environments to prevent moisture ingress through microcracks formed during thermal cycling.
How does the MAX6346-44D compare to newer-generation ultra-low-noise references like the LTZ1000 in terms of size, cost, and application fit?
The MAX6346-44D occupies significantly less board area (TO-23 vs. TO-99) and costs substantially less than the LTZ1000 while delivering comparable initial accuracy (±0.2% vs. ±0.05%) and superior bandwidth. However, the LTZ1000 achieves lower noise (0.1 µVpp vs. 35 µVpp) and better long-term drift (<1 ppm/year), making it preferable for observatory-grade instrumentation. For most industrial automation, medical monitoring, or automotive sensing applications, the MAX6346-44D provides sufficient precision at a fraction of the BOM cost and footprint, justifying its continued use despite newer alternatives.

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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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LUMILEDS

MAX6346-44D

LUMILEDS
32D-MAX6346-44D

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