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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsLM5007MMX
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LM5007MMX - Texas Instruments

Manufacturer Part Number
LM5007MMX
Manufacturer
Texas Instruments
Allelco Part Number
32D-LM5007MMX
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,400 pcs available, New & Original
Parts Description
IC REG BUCK ADJ 500MA 8VSSOP
Package
8-VSSOP
Data sheet
LM5007MMX.pdf

HTML Datasheet

LM5007.pdf
RoHs Status
 
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Specifications

LM5007MMX Tech Specifications
Texas Instruments - LM5007MMX technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - LM5007MMX

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Output (Min/Fixed) 2.5V
Voltage - Output (Max) 73V
Voltage - Input (Min) 9V
Voltage - Input (Max) 75V
Topology Buck
Synchronous Rectifier No
Supplier Device Package 8-VSSOP
Series -
Package / Case 8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
Product Attribute Attribute Value
Package Tape & Reel (TR)
Output Type Adjustable
Output Configuration Positive
Operating Temperature -40°C ~ 125°C (TJ)
Number of Outputs 1
Mounting Type Surface Mount
Function Step-Down
Frequency - Switching -
Current - Output 500mA
Base Product Number LM5007

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

LM5007MMX Image
LM5007MMX (1)

Manufacturer Part Number

LM5007MMX

Manufacturer

Texas Instruments

Introduction

The LM5007MMX is a step-down (buck) switching regulator part of Texas Instruments' Power Management ICs, specifically designed for DC to DC conversion.

Product Features and Performance

Adjustable output voltage from 2.5V to 73V

Supports input voltage range from 9V to 75V

Delivers up to 500mA of output current

Operates without a synchronous rectifier

Designed for surface mount technology (SMT) with a compact 8-TSSOP, 8-MSOP package

Operating temperature range from -40°C to 125°C

Product Advantages

Handles high-input voltages up to 75V efficiently

Flexible output voltage adjustment suitable for a wide range of applications

High reliability in extreme temperature conditions

Compact form factor ideal for space-constrained applications

LM5007MMX Image
LM5007MMX (2)

Key Technical Parameters

Voltage Input (Min): 9V

Voltage Input (Max): 75V

Voltage Output (Min/Fixed): 2.5V

Voltage Output (Max): 73V

Current Output: 500mA

Operating Temperature: -40°C ~ 125°C (TJ)

Package / Case: 8-TSSOP, 8-MSOP

Quality and Safety Features

Built-in thermal protection enhances safety and reliability under high temperature operating conditions

Compatibility

The small footprint and surface mount packaging make it compatible with various PCB designs

Application Areas

Ideally suited for power management tasks in industrial, automotive, telecommunications, and portable electronics

Product Lifecycle

Obsolete status indicates this part is nearing discontinuation with limited availability. Customers should seek replacements or upgrades.

Several Key Reasons to Choose This Product

Wide input voltage range suitable for diverse power systems

High flexibility in output voltages for broad application suitability

Compact and reliable design for tight spaces and harsh environments

Texas Instruments' reputation for quality and support in power management technology

Frequently Asked Questions(FAQ)

What are the key design trade-offs when selecting the LM5007MMX for a high-voltage step-down application requiring 500mA output current?
The LM5007MMX offers a wide input voltage range from 9V to 75V, making it suitable for high-voltage applications, but this necessitates careful layout and component selection to manage switching noise and thermal dissipation. With a fixed maximum output current of 500mA, designers must ensure that peak load conditions do not exceed this limit, especially during transient events. Additionally, since the device lacks synchronous rectification, the efficiency drops at higher input-to-output differentials compared to synchronous alternatives, which may require larger inductor and capacitor values to maintain regulation under variable loads.
How does the LM5007MMX compare to other buck regulators in terms of efficiency and thermal performance under continuous operation?
The LM5007MMX achieves moderate efficiency—typically around 80–85% in typical industrial conditions—due to its asynchronous architecture and non-synchronous rectifier. When compared to synchronous counterparts like the LM5008 or LM3671, it exhibits lower efficiency at light loads and higher input voltages because of increased conduction losses from the diode. Its thermal performance is adequate for 500mA output in most surface-mount applications, but sustained full-load operation may require PCB thermal vias or airflow in compact designs, particularly with input voltages above 48V.
What considerations apply when using the LM5007MMX in a system with tightly regulated output requirements below 3.3V?
For outputs below 3.3V, the LM5007MMX must operate with a duty cycle approaching or exceeding 50%, which increases conduction time and may reduce efficiency. The minimum on-time of the controller limits the achievable switching frequency at low voltages, potentially forcing the use of smaller inductors with higher ripple currents. This can lead to increased output voltage ripple and EMI challenges. Designers should verify stability across all operating points using compensated feedback networks and consider margining the compensation components to ensure robust loop behavior.
Can the LM5007MMX be safely used in automotive environments, and what derating practices are recommended?
While the LM5007MMX operates over an industrial temperature range of -40°C to 125°C, automotive systems often require additional reliability margins. It is not AEC-Q100 qualified, so direct use in safety-critical automotive applications may violate OEM standards. If deployed in non-safety automotive circuits, derating the output current to 400mA or lower and ensuring junction temperatures stay below 100°C through proper heatsinking improves long-term reliability. Input transients common in automotive environments (e.g., load dumps up to 40V) must also be suppressed with external TVS diodes.
What impact does switching frequency have on component size and efficiency when designing with the LM5007MMX?
Although the LM5007MMX does not fix the switching frequency, selecting a higher frequency allows for smaller inductors and capacitors, reducing board area. However, higher frequencies increase switching losses and electromagnetic interference. In practice, frequencies between 200kHz and 500kHz offer a balance, but efficiency decreases as frequency rises due to gate charge losses and increased core losses in ferrite materials. At very high frequencies (>1MHz), parasitic inductance in traces and layout becomes significant, potentially destabilizing the regulator unless carefully managed.
How does the absence of synchronous rectification in the LM5007MMX affect system-level power budgeting?
Without synchronous rectification, the LM5007MMX relies on an external Schottky diode for freewheeling current, which introduces forward voltage drop and conduction loss. This results in 0.5W to 1W of additional power dissipation per 500mA output at moderate input voltages (e.g., 12V to 24V). System designers must account for this loss when calculating total power consumption, thermal budgets, and battery life in portable or energy-sensitive applications, potentially necessitating alternative topologies for higher efficiency.
What are the implications of the LM5007MMX’s RoHS non-compliance status in modern electronics manufacturing?
The LM5007MMX is marked as RoHS non-compliant, meaning it contains restricted substances such as lead or certain brominated flame retardants beyond permissible levels. This restricts its use in new consumer electronics sold in the European Union and other RoHS-aligned markets. Manufacturers planning production must either select a compliant variant like the LM5007MMX/NOPB or obtain exemptions under specific clauses. Supply chain documentation and procurement records must reflect this status to avoid compliance violations during audits.
How should compensation network design be approached when integrating the LM5007MMX into a feedback loop?
The LM5007MMX uses a standard Type II compensation topology, requiring careful selection of Rcomp, Ccomp, and Cff to ensure adequate phase margin (>45°) and bandwidth (< switching frequency / 10). Given the wide input range and adjustable output, the compensation must be optimized for worst-case conditions—lowest output voltage with highest input voltage—to prevent instability. Simulation tools or datasheet-provided design equations should guide component selection, and final validation must include transient response testing under load steps.
Is the LM5007MMX suitable for isolated DC-DC conversion stages, and why or why not?
No, the LM5007MMX is not designed for isolated converters. As a non-isolated buck regulator, it lacks galvanic isolation, making it unsafe for applications where input and output grounds must be separated for safety or noise immunity. Attempting to use it in such configurations violates electrical safety standards and risks equipment damage or personal injury. Isolation requires separate converter stages with transformers or dedicated isolated ICs.
What precautions are necessary when routing power and ground traces near the LM5007MMX in high-current paths?
High-current return paths—especially the inductor-to-diode connection and input/output capacitors—must be kept short and wide to minimize parasitic inductance and resistance. These loops generate significant magnetic fields and heat, so placing them away from sensitive analog sections reduces EMI and coupling. Ground planes should be solid beneath the IC and decoupling capacitors, but split only if signal integrity demands it, ensuring return paths remain unbroken.
How does the LM5007MMX handle startup inrush current when powered from a high-voltage source?
The LM5007MMX typically employs soft-start functionality to limit inrush current by ramping up the output gradually. However, with inputs up to 75V, the initial charging of bulk capacitors can still draw several hundred milliamps. Without external pre-charge circuitry, this may stress input sources like batteries or linear regulators. Adding a small series resistor or active pre-charge circuit at startup can mitigate stress, though it adds complexity and cost.
What are the consequences of exceeding the maximum junction temperature of the LM5007MMX during prolonged operation?
Exceeding 125°C (TJmax) triggers thermal shutdown to protect the device, causing intermittent operation and potential resets in systems requiring continuous function. Prolonged operation near or above this threshold accelerates electromigration and reduces mean time between failure (MTBF). Thermal modeling must account for ambient temperature, airflow, copper area, and adjacent component heat generation to maintain safe operating margins, especially in sealed enclosures.
Can multiple LM5007MMX regulators be paralleled to increase output current capacity?
Directly paralleling LM5007MMX devices without additional control circuitry is not recommended due to potential current imbalance caused by slight variations in Vf (diode forward voltage) and timing mismatches. While possible in some low-ripple applications with current-sharing resistors and matched components, it increases complexity and defeats the simplicity advantage of single-regulator designs. For higher current needs, upgrading to a multi-phase or higher-current IC family is preferable.
What role does the output capacitor ESR play in stabilizing the LM5007MMX’s feedback loop?
Lower ESR ceramic capacitors improve transient response and reduce output ripple but can cause peaking and instability if combined with excessive inductance. The LM5007MMX’s compensation network assumes a certain effective ESR; using ultra-low ESR caps (e.g., X7R MLCCs) without sufficient ESR may degrade phase margin. A small amount of ESR (e.g., 10mΩ–100mΩ) from a polymer or tantalum capacitor often improves stability, especially at light loads.
How does input voltage variation affect the minimum achievable output voltage with the LM5007MMX?
The minimum output voltage (2.5V) is constrained by internal references and feedback divider limits, not directly by input voltage. However, at very low input voltages close to 9V, achieving 2.5V requires high duty cycles (>33%), which may challenge the controller’s minimum on-time capability. If the required frequency exceeds the IC’s practical limit, discontinuous conduction mode (DCM) occurs, increasing ripple and reducing efficiency. Designers should verify feasibility across the full input range during early schematic reviews.
What environmental factors influence the long-term reliability of the LM5007MMX in outdoor or industrial installations?
Operating in high humidity or corrosive atmospheres without conformal coating can accelerate solder joint fatigue and corrosion on exposed pads. The MSL 1 rating indicates unlimited shelf life if stored properly, but field exposure requires protection. Vibration and thermal cycling in industrial settings demand robust PCB mounting and stress-relief traces. Moisture ingress near the IC package can lead to popcorning during reflow, so dry packaging and controlled handling are essential.
Why might a designer choose the LM5007MMX over a newer, fully integrated solution despite its limitations?
The LM5007MMX offers proven robustness and wide availability in legacy designs, particularly where space is not critical and cost sensitivity favors discrete implementations. Its high-voltage tolerance enables simple front-end regulation before downstream conversion, reducing component count in certain telecom or industrial systems. Migration to newer ICs may require extensive retesting and certification updates, justifying retention in mature product lines where risk mitigation outweighs efficiency gains.
How should end-of-life planning be approached for products relying on the LM5007MMX?
Since the LM5007MMX is not actively manufactured in new quantities and lacks a direct RoHS-compliant replacement in the same pinout, long-term supply planning must begin well in advance. Designers should evaluate substitute parts like the LM5007MMX/NOPB (if available) or migrate to newer families such as the LM2504x series, which offer similar features with improved efficiency and compliance. Maintaining dual-sourcing options and securing surplus inventory are critical risk mitigation strategies.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments LM5007MMX

Product Attribute LM5007MM/S7003020 LM5007MM LM5007SD LM5007SD-NS
Part Number LM5007MM/S7003020 LM5007MM LM5007SD LM5007SD-NS
Manufacturer Texas Instruments Texas Instruments Texas Instruments National Semiconductor
Mounting Type - Surface Mount Through Hole Surface Mount
Output Type - Current - Unbuffered Voltage - Buffered -
Output Configuration - - - -
Function - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Frequency - Switching - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Output (Max) - - - -
Synchronous Rectifier - - - -
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Number of Outputs - - - -
Topology - - - -
Voltage - Input (Max) - - - -
Voltage - Output (Min/Fixed) - - - -
Voltage - Input (Min) - - - -
Current - Output - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad

LM5007MMX Datasheet PDF

Download LM5007MMX pdf datasheets and Texas Instruments documentation for LM5007MMX - Texas Instruments.

HTML Datasheet
LM5007.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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LM5007MMX Image

LM5007MMX

Texas Instruments
32D-LM5007MMX

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