LP3906SQ-JXXI/NOPB

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Power Management Specialized - PMIC DUAL 1.5A BUCK /DUAL 300MA LDO

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LP3906SQ-JXXI/NOPB DataSheet

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LP3906SQ-JXXI/NOPB Details

The LP3906SQ-JXXI/NOPB is a high-efficiency step-down DC-DC converter from Texas Instruments, designed for powering portable electronic devices. This converter offers a wide input voltage range and adjustable output voltage, making it versatile for various applications. It features low quiescent current, high efficiency, and built-in protection functions for reliable and efficient power delivery.

Pinout

  • 1 (VIN): Input Voltage
  • 2 (SW): Switch Node
  • 3 (GND): Ground
  • 4 (FB): Feedback
  • 5 (EN): Enable
  • 6 (VOUT): Output Voltage

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

  • Wide Input Voltage Range: Supports a wide range of input voltages for flexibility in power sources.
  • Adjustable Output Voltage: Allows for customization of output voltage as per application requirements.
  • Low Quiescent Current: Minimal standby current consumption for energy-efficient operation.
  • High Efficiency: Offers high efficiency to minimize power loss during voltage conversion.
  • Protection Functions: Built-in protection features for overvoltage, overcurrent, and thermal protection.

Application

  • Portable Devices: Ideal for powering portable electronic devices such as smartphones, tablets, and wearables.
  • IoT Devices: Suitable for IoT applications requiring efficient power management.
  • Embedded Systems: Used in embedded systems for stable and reliable power supply.

Where to Use

The LP3906SQ-JXXI/NOPB is suitable for applications that demand efficient and reliable power conversion. It is commonly used in portable devices, IoT products, and embedded systems where high efficiency and stable power supply are essential.

How to Use

Connect the LP3906SQ-JXXI/NOPB according to the provided pinout, ensuring correct input and output connections. Adjust the output voltage as needed and enable the converter for power delivery. Monitor for any protection triggers and ensure proper thermal management for optimal performance. For detailed usage instructions, consult the datasheet.

Application Circuit

The application circuit for the LP3906SQ-JXXI/NOPB showcases how to integrate the DC-DC converter into your electronic system. It includes connections for input voltage, output voltage, feedback loop, and protection features to guarantee safe and efficient operation.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

  • LM3671: A similar DC-DC converter from Texas Instruments with comparable features and performance.
  • MP2307: An alternative step-down converter offering similar functionality and efficiency.

Complementary

The LP3906SQ-JXXI/NOPB can be complemented by the LP5900 series LDO regulators for additional power management capabilities, providing a complete power solution for electronic devices.

When pairing complementary components, ensure compatibility and synergy in power delivery and efficiency.

Frequently Asked Questions

Q: What is the maximum input voltage supported by the LP3906SQ-JXXI/NOPB?

A: The LP3906SQ-JXXI/NOPB can handle input voltages within a specific range. Refer to the datasheet for exact specifications and limitations.

Q: Does the LP3906SQ-JXXI/NOPB have thermal protection?

A: Yes, the LP3906SQ-JXXI/NOPB comes with built-in thermal protection to safeguard the device from overheating and ensure reliable operation.

LP3906SQ-JXXI/NOPB

Specifications

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

Regulated outputs (#) 4 Vin (min) (V) 2.7
Vin (max) (V) 5.5 Iout (max) (A) 1.5
Configurability Factory programmable, Software configurable Rating Catalog
Step-down DC/DC controller 0 Step-down DC/DC converter 2
Step-up DC/DC controller 0 Step-up DC/DC converter 0
LDO 2 Iq (typ) (mA) 0.07
Switching frequency (max) (kHz) 2000 Features Comm control, Dynamic voltage scaling, Enable, Overcurrent protection, Synchronous rectification, Thermal shutdown, UVLO fixed
Operating temperature range (°C) -40 to 85 Processor name Generic
Processor supplier Generic Shutdown current (ISD) (typ) (µA) 0.04
Switching frequency (typ) (kHz) 2000

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 LP3906SQ-JXXI/NOPB PDF Download

FAQs

What is LP3906SQ-JXXI/NOPB?

The LP3906SQ-JXXI/NOPB is a high-efficiency, multi-phase synchronous buck converter with integrated LDO designed by Texas Instruments. It is ideal for powering the core voltage and I/O voltage of microprocessors, FPGAs, and other digital loads in applications such as smartphones, tablets, and portable electronics.

How Does LP3906SQ-JXXI/NOPB Work?

The LP3906SQ-JXXI/NOPB works by efficiently converting a higher input voltage to a lower output voltage while providing multiple output phases to enable smooth power delivery to digital loads. It features a built-in LDO for supplying low-noise power to sensitive analog circuits. The device offers programmable control for optimization of power management in various applications.

How Many Pins does LP3906SQ-JXXI/NOPB have and What are the Functions of the Pinout Configuration?

The LP3906SQ-JXXI/NOPB is housed in a 24-pin WQFN (Wettable Flanks Quad Flat No-Lead) package. The pinout configuration includes:

  • VIN: Input voltage pin.
  • VOUT: Output voltage pin.
  • PGND: Power ground pin.
  • LGATE, VHATE: Low-side gate drive and high-side gate drive pins for the integrated power MOSFETs.
  • BOOT, BST: Bootstrap and bootstrap output pins for the high-side gate drive.
  • VCC: Internal voltage regulator output pin.
  • EN, PGOOD, MODE: Enable, power good, and mode control pins.

What are the Pros and Cons of LP3906SQ-JXXI/NOPB?

Pros:

  • High Efficiency: Provides high efficiency power conversion for extended battery life in portable devices.
  • Integrated LDO: Includes an integrated low dropout regulator for supplying low-noise power to sensitive circuits.
  • Programmable Control: Allows flexible power management optimization for different applications.
  • Compact Package: The 24-pin WQFN package offers a space-efficient solution for power management designs.

Cons:

  • Complexity: Synchronous buck converters may require careful consideration of external components and layout for optimal performance.
  • Heat Dissipation: High-efficiency power conversion can generate heat that needs to be managed in the system design.

Are There Any Equivalents/Alternatives to LP3906SQ-JXXI/NOPB for Recommendation?

  • The TPS63020 from Texas Instruments is a comparable multi-phase synchronous buck converter with integrated LDO.
  • Alternatives to the LP3906SQ-JXXI/NOPB include the MP2636 from Monolithic Power Systems and the ADP5003 from Analog Devices.

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