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LM27402SQ

High switching frequency

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Overview of LM27402SQ

The LM27402SQ is a synchronous step-down DC-DC converter IC that provides high efficiency and precision voltage regulation. It is designed for use in various power management applications requiring a stable DC output voltage.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for exact details.)

  • VIN: Input voltage
  • SW: Switch node connection
  • AGND: Analog ground
  • PGND: Power ground
  • FB: Feedback pin for voltage regulation
  • EN: Enable pin for controlling the IC
  • SS/TR: Soft-start/Tracking pin
  • COMP: Compensation pin for stability
  • PGOOD: Power Good indicator
  • SS/TR: Soft-start/Tracking pin
  • VOUT: Output voltage
  • COMP: Compensation pin
  • UVLO: Under voltage lockout pin
  • TSD: Thermal shutdown pin

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the LM27402SQ DC-DC converter for better understanding.

Key Features

  • Synchronous Step-Down Converter: Provides high efficiency power conversion for various applications.
  • Precision Voltage Regulation: Offers accurate voltage output for stable operation.
  • Enable Pin: Enables control of the IC for power management.
  • Soft-Start Function: Includes a soft-start feature for controlled power-up sequences.
  • Power Good Indicator: Indicates the output status for monitoring purposes.
  • Thermal Shutdown Protection: Features thermal shutdown to prevent IC damage due to overheating.

Note: For detailed specifications, refer to the LM27402SQ datasheet.

Application

  • Power Management Systems: Ideal for use in power management systems requiring efficient voltage regulation.
  • Consumer Electronics: Suitable for consumer electronic devices needing stable power supply.
  • Industrial Automation: Used in industrial automation systems for reliable power conversion.

Functionality

The LM27402SQ is a synchronous step-down DC-DC converter that efficiently converts input voltage to a stable output voltage, making it essential for various power management applications.

Usage Guide

  • Input Voltage: Connect VIN (Pin 1) to the input power source.
  • Output Voltage Setting: Adjust the feedback voltage using the FB pin (Pin 5) for desired output voltage.
  • Enable Control: Use the EN pin (Pin 6) to enable or disable the IC as needed.

Frequently Asked Questions

Q: Is the LM27402SQ suitable for high-power applications?
A: The LM27402SQ is designed for moderate power applications. For high-power requirements, consider higher-rated ICs in the LM274xx series.

Q: Does the LM27402SQ support remote voltage sensing?
A: The LM27402SQ does not feature remote voltage sensing capabilities.

Equivalent

For similar functionalities, consider these alternatives to the LM27402SQ:

  • LM27403: A similar synchronous step-down converter with slightly different specifications.
  • LM27401: This IC offers comparable performance to the LM27402SQ with variations in features.

Specifications

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

Product Category Switching Controllers Topology Buck
Number of Outputs 1 Output Switching Frequency 200 kHz to 1.2 MHz
Duty Cycle - Max 95 % Input Voltage 3 V to 20 V
Output Voltage 600 mV to 18.6 V Output Current 30 A
Minimum Operating Temperature - 40 C Maximum Operating Temperature + 125 C
Mounting Style SMD/SMT Package / Case LLP-16
Brand Texas Instruments Product Type Switching Controllers
Subcategory PMIC - Power Management ICs

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