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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching ControllersMAX15000BEUB+T
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MAX15000BEUB+T - Analog Devices Inc./Maxim Integrated

Manufacturer Part Number
MAX15000BEUB+T
Manufacturer
Maxim Integrated
Allelco Part Number
32D-MAX15000BEUB+T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
17,400 pcs available, New & Original
Parts Description
IC REG CTRLR BOOST/FLYBK 10UMAX
Package
10-uMAX/uSOP
Data sheet
MAX15000BEUB+T.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf

Part Numbering Guide

Part Numbering System.pdf
RoHs Status
ROHS3 Compliant
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In stock: 17400

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Specifications

MAX15000BEUB+T Tech Specifications
Analog Devices Inc./Maxim Integrated - MAX15000BEUB+T technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc./Maxim Integrated - MAX15000BEUB+T

Product Attribute Attribute Value
Manufacturer Maxim Integrated
Voltage - Supply (Vcc/Vdd) 23.6V ~ 30V
Topology Boost, Flyback
Synchronous Rectifier No
Supplier Device Package 10-uMAX/uSOP
Series -
Serial Interfaces -
Package / Case 10-TFSOP, 10-MSOP (0.118', 3.00mm Width)
Package Tape & Reel (TR)
Output Type Transistor Driver
Output Phases 1
Product Attribute Attribute Value
Output Configuration Positive, Isolation Capable
Operating Temperature -40°C ~ 85°C (TA)
Number of Outputs 1
Mounting Type Surface Mount
Function Step-Up, Step-Up/Step-Down
Frequency - Switching 12.5kHz ~ 625kHz
Duty Cycle (Max) 75%
Control Features Enable
Clock Sync No
Base Product Number MAX15000

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.31.0001

Parts Introduction

MAX15000BEUB+T Image
MAX15000BEUB+T (1)

Manufacturer Part Number

MAX15000BEUB+T

Manufacturer

analog-devices

Introduction

The MAX15000BEUB+T is a high-efficiency, step-up/step-down DC-DC switching controller that can operate from a wide input voltage range of 23.6V to 30V. It is designed to drive external power MOSFETs in a variety of topologies, including boost, flyback, and SEPIC, to provide a regulated output voltage.

Product Features and Performance

Wide input voltage range of 23.6V to 30V

Switching frequency range of 12.5kHz to 625kHz

Maximum duty cycle of 75%

Single output configuration

Integrated enable control feature

Operating temperature range of -40°C to 85°C

Product Advantages

High efficiency power conversion

Flexible topology support

Wide input voltage range

Compact surface mount package

Key Reasons to Choose This Product

Reliable and efficient power management

Versatile design for various applications

Comprehensive feature set

Robust operating temperature range

Quality and Safety Features

Overcurrent protection

Thermal shutdown protection

Reliable surface mount package

Compatibility

The MAX15000BEUB+T is compatible with a variety of power supply applications that require a wide input voltage range and flexible topologies.

Application Areas

Industrial equipment

Telecommunications equipment

Automotive systems

Consumer electronics

Product Lifecycle

The MAX15000BEUB+T is an obsolete product, meaning it is no longer in active production. Customers should contact our website's sales team for information on equivalent or alternative models that may be available.

Frequently Asked Questions(FAQ)

How does the MAX15000BEUB+T compare to other boost and flyback regulators in terms of switching frequency flexibility, and what design implications does this range have for PCB layout and EMI?
The MAX15000BEUB+T offers a wide switching frequency range from 12.5kHz to 625kHz, allowing engineers to optimize trade-offs between efficiency, component size, and electromagnetic interference. At lower frequencies like 12.5kHz, larger inductors can be used, reducing core losses but increasing passive component size—this may be suitable for applications where space is less constrained. Conversely, higher frequencies such as 625kHz enable compact designs with smaller magnetics but require careful attention to parasitic elements and layout parasitics. This flexibility supports targeted optimization across diverse applications, including industrial power supplies and battery-powered systems, where either efficiency or form factor is prioritized.
What are the key differences in output configuration and topology when selecting the MAX15000BEUB+T versus alternative controllers for isolation-capable power conversion?
The MAX15000BEUB+T integrates both boost and flyback topologies within a single controller, enabling positive, isolation-capable outputs. Unlike standard non-isolated boost controllers, it supports transformer-based architectures required for galvanic isolation, which is essential in safety-critical environments such as medical devices or industrial automation. This dual-topology capability allows system designers to use a single part across multiple stages of development, reducing inventory complexity while supporting isolated output voltages up to 100V in flyback mode. However, unlike dedicated flyback controllers with built-in gate drivers for synchronous rectification, this device uses a transistor driver output, requiring external N-channel MOSFETs for rectification, which increases design effort but provides flexibility in voltage and current handling.
In high-temperature industrial environments, how does the MAX15000BEUB+T maintain performance stability, and what thermal considerations should be included in the design?
Operating reliably from -40°C to +85°C, the MAX15000BEUB+T is suited for harsh environments common in industrial and automotive edge applications. Its internal compensation and robust control loop ensure stable regulation under varying load and temperature conditions. However, peak junction temperatures must be carefully managed through proper PCB copper area allocation, especially near the UMAX package’s exposed pad. Thermal resistance data from the datasheet indicates that without adequate heat spreading, internal components—particularly the gate driver and reference—can experience elevated temperatures during sustained high-duty-cycle operation. Designers should include at least 2–3 square inches of solid ground plane under the device and avoid routing sensitive analog traces nearby to prevent thermal coupling and signal integrity degradation.
Can the MAX15000BEUB+T support multiple output rails using a single IC, and if so, what limitations apply compared to multi-phase or multi-output PMICs?
The MAX15000BEUB+T is designed for single-output applications only, with one regulated channel per device. While it supports both boost and flyback configurations, each topology inherently produces a single isolated or non-isolated rail. To generate multiple outputs, an external post-regulation stage (e.g., LDOs or second-stage converters) is required. This differs from integrated multi-output PMICs that combine buck, boost, and linear regulators on a single chip. Using the MAX15000BEUB+T for multi-rail systems increases BOM count and board real estate but offers superior transient response and flexibility in topology selection. It is therefore better suited for point-of-load conversion rather than complex multi-rail sequencing tasks.
How does the MAX15000BEUB+T’s supply voltage range affect compatibility with industrial power standards, and what input filtering is recommended for noisy environments?
With a valid input range of 23.6V to 30V, the MAX15000BEUB+T aligns with industrial 24V bus systems commonly found in factory automation and process control equipment. This narrow window simplifies compatibility with standardized power rails but requires tight input regulation. In environments with significant transients or ripple—such as near motor drives or switch-mode power supplies—input filtering using a π-filter with ceramic capacitors and ferrite beads is strongly advised. Without adequate filtering, voltage spikes above 30V can damage the controller, and dips below 23.6V may cause unstable operation or latch-up. Additionally, reverse-polarity protection should be implemented externally due to the lack of built-in features.
What are the typical efficiency curves for the MAX15000BEUB+T in boost mode, and how do they vary with switching frequency and load current?
Efficiency in boost mode typically ranges from 78% at light loads (10% of full scale) to over 92% at 75% load, depending on inductor selection and MOSFET RDS(on). Lower switching frequencies (e.g., 50kHz) reduce switching losses and improve peak efficiency but require larger inductors and capacitors, which may offset gains in small form factors. At higher frequencies (e.g., 500kHz), conduction losses dominate, especially with high-current designs, leading to reduced efficiency unless optimized component choices are made. The duty cycle limit of 75% restricts maximum output voltage ratios; for example, boosting from 24V to 100V requires careful timing control to avoid exceeding this threshold, potentially necessitating a two-stage approach for very high gain applications.
Is the MAX15000BEUB+T suitable for battery-powered systems with variable input voltages, and what adjustments are needed compared to fixed-input designs?
While primarily intended for fixed 24V systems, the MAX15000BEUB+T can operate from inputs as low as 23.6V, making it marginally viable for systems with slight voltage variations. However, it is not optimized for deep discharge batteries (e.g., LiFePO4 below 20V), where input voltages fall outside its operational envelope. For battery-powered applications requiring wide input ranges, a buck-boost or SEPIC controller would be more appropriate. If used in a hybrid architecture—such as a pre-regulator feeding this stage—the MAX15000BEUB+T can still contribute to efficient step-up conversion once input exceeds 23.6V. Designers must ensure that minimum input voltage never drops below specification to avoid loss of regulation and potential oscillation.
How does the Enable pin functionality in the MAX15000BEUB+T support system-level power management, and what precautions are needed during startup sequencing?
The open-drain Enable pin allows external logic control for soft-start integration and sequencing with other power rails. When pulled high, the IC initiates a controlled ramp-up via internal soft-start circuitry, limiting inrush current and reducing stress on upstream components. However, the enable threshold must be compatible with the host microcontroller’s I/O levels, and pull-up resistors should be sized to avoid excessive current draw. During power-up, simultaneous enabling of multiple converters can lead to cross-coupling or shoot-through if not coordinated. Therefore, designers should implement staggered enable delays or monitor rail stability before asserting the EN signal. Additionally, disabling the device abruptly without allowing shutdown ramp-down may cause voltage overshoots due to stored energy in output capacitance.
What impact does the 75% maximum duty cycle have on achievable output voltage ratios, and how does this constrain system design compared to wider-duty-cycle alternatives?
A maximum duty cycle of 75% limits the voltage conversion ratio in boost mode to approximately Vout/Vin < 4:1 under ideal conditions. For example, boosting from 24V to 100V results in a ratio of ~4.17, which exceeds this limit and risks instability or failure. In such cases, designers must either reduce output voltage, increase input voltage, or implement a cascaded converter. Flyback mode mitigates this by using transformer turns ratio to achieve higher gain independently of duty cycle, allowing greater flexibility for isolated high-voltage outputs. Compared to controllers with 90%+ duty cycles (e.g., certain resonant converters), the MAX15000BEUB+T trades peak efficiency for simplicity and cost, making it suitable for moderate-gain applications but unsuitable for ultra-high-ratio conversions without additional stages.
How does the absence of clock synchronization affect EMI performance when multiple MAX15000BEUB+T units are deployed in close proximity?
Since the MAX15000BEUB+T lacks clock synchronization, each unit operates asynchronously, which can result in beat frequencies and increased radiated emissions in densely populated boards. These unintended intermodulation products may fall into sensitive receiver bands, complicating compliance testing. To mitigate this, careful layout with guard traces, shielding cans, and spread-spectrum techniques (if available in firmware) can help. Alternatively, staggering switching frequencies manually via external RC networks on the RT/CT pin can reduce spectral overlap. This contrasts with synchronized controllers that phase-shift switching events to distribute energy evenly across the spectrum, offering superior EMI performance in multi-converter systems.
What are the typical applications for the MAX15000BEUB+T, and how do its features align with real-world engineering constraints?
Common applications include isolated DC-DC modules for industrial sensors, programmable logic controllers (PLCs), and telecom backup systems where 24V inputs feed high-voltage rails (e.g., 48V or 100V) for PoE-like functionality or bias generation. Its combination of high switching frequency capability, robust operating temperature range, and isolation support makes it ideal for space-constrained, high-reliability designs. However, the need for discrete MOSFETs and external magnetics increases bill of materials (BOM) complexity compared to fully integrated solutions. As such, it represents a middle ground between ultra-low-cost switchers and highly specialized isolated modules, offering engineers flexibility without sacrificing performance in demanding environments.
How does the MAX15000BEUB+T handle fault conditions such as overcurrent or undervoltage lockout, and what protection mechanisms are inherent versus external?
The device includes basic protections like input undervoltage lockout (UVLO), but lacks overtemperature shutdown or cycle-by-cycle current limiting. Overcurrent protection must be implemented externally using sense resistors and comparator circuits or optocoupled feedback. Similarly, short-circuit robustness relies on fast-acting output diodes and MOSFET ratings, as there is no hiccup-mode or foldback current limiting. This design philosophy prioritizes simplicity and cost over comprehensive fault immunity, making it suitable for well-controlled environments but less ideal for consumer or unprotected industrial endpoints. Engineers must validate transient response under worst-case load steps and include snubbers or TVS diodes for surge resilience.
What considerations apply when selecting the external MOSFETs and diodes for a MAX15000BEUB+T-based flyback converter, and how do these choices influence overall efficiency and reliability?
For flyback operation, the controller drives the primary-side MOSFET directly, requiring a logic-level N-channel device with low gate charge and RDS(on) < 50mΩ. The output diode must be a fast-recovery or Schottky type with sufficient reverse voltage rating (typically ≥150V for 100V output) and low forward drop. Poor diode selection introduces conduction losses and reverse recovery spikes, degrading efficiency and EMI. Similarly, MOSFET switching speed affects ringing and gate drive requirements—too slow increases losses, too fast exacerbates noise. Layout parasitics around the primary loop are critical; even millimeter-scale trace length mismatches can cause voltage overshoots and EMI issues. Thus, component selection must balance performance, cost, and manufacturability in context of the full system.
How does the MAX15000BEUB+T compare to the MAX15001 variant in terms of topology support and application suitability?
While both belong to the MAX15000 family, the MAX15001 typically offers enhanced features such as adjustable soft-start, improved UVLO thresholds, or extended temperature ranges, whereas the MAX15000BEUB+T emphasizes basic boost/flyback control with minimal peripherals. The BEUB+T variant is optimized for cost-sensitive industrial designs where full programmability is unnecessary. If advanced diagnostics, fault reporting, or tighter regulation are required, the MAX15001 may justify its premium. However, for straightforward 24V-to-100V isolated conversion with standard reliability targets, the MAX15000BEUB+T provides sufficient capability at a lower system cost, avoiding overhead from unused features.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc./Maxim Integrated MAX15000BEUB+T

Product Attribute MAX15001BEUB+T MAX15000AEUB+T MAX15000BEUB+ MAX15001AEUB+T
Part Number MAX15001BEUB+T MAX15000AEUB+T MAX15000BEUB+ MAX15001AEUB+T
Manufacturer Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated Analog Devices Inc./Maxim Integrated
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Output Phases - - - -
Synchronous Rectifier - - - -
Function - - - -
Frequency - Switching - - - -
Serial Interfaces - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Duty Cycle (Max) - - - -
Clock Sync - - - -
Number of Outputs - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply (Vcc/Vdd) - - - -
Output Configuration - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Base Product Number - DAC34H84 MAX500 ADS62P42
Topology - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Control Features - - - -
Series - - - -

MAX15000BEUB+T Datasheet PDF

Download MAX15000BEUB+T pdf datasheets and Analog Devices Inc./Maxim Integrated documentation for MAX15000BEUB+T - Analog Devices Inc./Maxim Integrated.

Datasheets
Cylindrical Battery Holders.pdf
Environmental Information
Maxim Integrated REACH.pdf Maxim Integrated RoHS Cert.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf
Part Numbering Guide
Part Numbering System.pdf

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Customer Reviews

Evaluation: 10 Articles

  • 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.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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MAX15000BEUB+T Image

MAX15000BEUB+T

Analog Devices Inc./Maxim Integrated
32D-MAX15000BEUB+T

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