LM5116MHX

Efficient and compact DC-DC converter with step-down transistor driver
7,427 Effective Inventory

LM5116MHX

Effective Inventory7,427

Efficient and compact DC-DC converter with step-down transistor driver

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Shipping & Payment

Shipping & Payment

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Service & Packaging

Service & Packaging

About After Sales Service

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LM5116MHX DataSheet
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Details

The LM5116MHX, a state-of-the-art synchronous buck controller developed by Texas Instruments, is engineered to deliver superior performance in a variety of settings. With an impressive input voltage range, this controller is well-suited for industrial, automotive, and telecommunications applications, showcasing its versatility. Utilizing a voltage mode control loop, it achieves exceptional transient response and stability, elevating the overall efficiency of the system. Featuring an adjustable switching frequency that can go up to 1 MHz, the LM5116MHX allows for precise optimization of efficiency and component size, adapting to specific requirements effortlessly. Additionally, it includes a programmable soft-start function that effectively manages inrush current during startup, bolstering the reliability of the system. The controller also incorporates a programmable current limit and hiccup mode short-circuit protection, ensuring thorough protection against overloads and faults. Operating seamlessly in harsh environments, thanks to its wide temperature range and durable packaging, the LM5116MHX guarantees reliable performance under demanding conditions. With adjustable compensation, synchronization capability, and a range of protective features, this controller offers unparalleled flexibility and security for sophisticated power supply applications

LM5116MHX

Key Features

  • Fault Tolerant Design
  • Low Noise Operation Mode
  • Overcurrent Protection Feature
  • Safe Operating Area Indicator
  • Programmable Overvoltage Protection
  • Automatic Recovery after Fault Clearance

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Vin (min) (V) 6 Vin (max) (V) 100
Vout (min) (V) 1.215 Vout (max) (V) 80
Iout (max) (A) 20 Iq (typ) (mA) 4.6
Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000
Features Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Synchronous Rectification, UVLO adjustable Operating temperature range (°C) -40 to 150
Regulated outputs (#) 1 Number of phases 1
Rating Catalog Control mode current mode
Type Controller

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LM5116MHX PDF Download

FAQs

What is LM5116MHX?

The LM5116MHX is a high-voltage, synchronous buck controller designed by Texas Instruments. It is suitable for a wide range of applications requiring step-down DC-DC conversion, such as industrial power supplies, automotive systems, and telecommunications equipment.

How Does LM5116MHX Work?

The LM5116MHX operates as a synchronous buck controller, regulating the output voltage by controlling the switching of power MOSFETs. It utilizes a pulse-width modulation (PWM) control scheme to efficiently step down input voltage to the desired output voltage. The controller features programmable frequency, soft-start, and protection features for reliable power delivery.

How Many Pins does LM5116MHX have and What are the Functions of the Pinout Configuration?

The LM5116MHX is housed in a 20-pin HTSSOP (PowerPAD) package. The pinout configuration includes:

  • VCC: Power supply input pin.
  • BOOT: Bootstrap capacitor pin for driving high-side MOSFET.
  • PH, PL: High-side and low-side MOSFET gate drive pins.
  • COMP, FB: Compensation and feedback pins for loop stability.
  • EN, SS/TR, PG, SS/UVLO: Enable, soft-start/tracking, power good, and soft-start/undervoltage lockout pins.

What are the Pros and Cons of LM5116MHX?

Pros:

  • High Voltage Operation: Capable of handling high input voltages for diverse applications.
  • Efficiency: Synchronous buck operation improves power efficiency.
  • Programmable Features: Includes adjustable frequency, soft-start, and protection mechanisms.
  • Compact Package: The HTSSOP package offers space-saving benefits.
  • Reliable Performance: Designed for robust and reliable power conversion.

Cons:

  • Complexity: Requires careful design considerations for optimal performance.
  • External Components: May need external components for specific applications.
  • Thermal Management: High-voltage operation may require attention to thermal dissipation.

Are There Any Equivalents/Alternatives to LM5116MHX for Recommendation?

  • An equivalent part to the LM5116MHX is the LM5117 from Texas Instruments.
  • Alternatives to the LM5116MHX include the LTC3891 from Analog Devices and the TPS548D22 from Texas Instruments.

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