Part Number: L6920DTR

Manufacturer: STMicroelectronics

Description: IC REG BST ADJ/1.8V 800MA 8TSSOP

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of L6920DTR

Datasheet  L6920DTR datasheet
Category Integrated Circuits (ICs)
Family PMIC – Voltage Regulators – DC DC Switching Regulators
Manufacturer STMicroelectronics
Packaging Tape & Reel (TR)
Part Status Active
Function Step-Up
Output Configuration Positive
Topology Boost
Output Type Adjustable (Fixed)
Number of Outputs 1
Voltage – Input (Min) 0.6V
Voltage – Input (Max) 5.5V
Voltage – Output (Min/Fixed) 1.8V (3.3V, 5V)
Voltage – Output (Max) 5.5V
Current – Output 800mA (Switch)
Frequency – Switching
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case 8-TSSOP (0.173″, 4.40mm Width)
Supplier Device Package 8-TSSOP


Electronic devices have become increasingly important in our daily lives in today’s fast-paced society. These devices rely on effective power management solutions to function properly, and one such solution is the L6920DTR. This article offers a thorough guide to the L6920DTR, a high-efficiency step-up controller designed to convert battery voltage to a chosen output voltage with few external components.

Understanding the L6920DTR

The L6920DTR is a versatile step-up controller with a reputation for efficiency and dependability. Let’s look at some of its important features and applications:

Key Features

Wide Input Voltage Range: The L6920DTR accepts input voltages ranging from 0.6V to 5.5V, making it appropriate for a wide range of battery-powered applications.

  • Low Startup Voltage: The L6920DTR can operate even when the input voltage is low, thanks to a guaranteed startup voltage of under 1V.
  • Internal Synchronous Rectifier: A 120m P-channel MOSFET is used to implement an internal synchronous rectifier in the device. This function improves overall efficiency by lowering power loss during conversion.
  • Zero Shutdown Current: The L6920DTR has zero shutdown current, which means it consumes very little power while not in use.
  • It has fixed output voltage options of 3.3V and 5V, as well as an adjustable output voltage range of 2V to 5.2V, to meet the needs of varied applications.
  • Internal Active Switch: A 120m internal active switch improves controller efficiency, resulting in longer battery life in portable devices.
  • Low Battery Voltage Detection: The L6920DTR has low battery voltage detection, which sends a signal or takes action when the battery voltage falls below a particular level.
  • Reverse Battery Protection: This function protects the device and any attached electronics from damage in the event of a reverse battery connection.


The L6920DTR’s versatility makes it appropriate for a wide range of applications, including:

  • Devices with One to Three-Cell Batteries: The L6920DTR is an excellent choice for devices with one to three-cell batteries. It increases the voltage efficiently, extending the functioning time of these devices. This category comprises a wide variety of portable devices, ranging from handheld game consoles to modest medical devices.
  • PDAs and handheld devices: The L6920DTR’s excellent efficiency and low power consumption benefit portable digital assistants (PDAs) and other handheld equipment. It guarantees that these gadgets remain functioning for extended periods of time, providing users with ease and dependability.
  • Cell Phones and Digital Cordless Phones: Power management is crucial in the realm of mobile communication. This demand is met by the L6920DTR, which provides a reliable and efficient power supply, extending the battery life of cellular phones and digital cordless phones. Users can stay connected for extended periods of time without having to recharge their devices frequently.
  • Pagers: Reliable power conversion is critical for constant functioning in the realm of paging devices. The L6920DTR excels in this area, ensuring that pagers run efficiently and remain connected so that vital messages can be delivered without interruption.
  • GPS (Global Positioning System): GPS devices are frequently used in remote or outdoor settings where power efficiency is critical. The L6920DTR helps GPS units run longer, allowing users to navigate and track their location for longer periods of time without worrying about battery depletion.
  • Digital cameras: A steady power supply is required for high-quality image capturing. The L6920DTR delivers a stable output voltage, ensuring that digital cameras perform optimally throughout photo and video capture. This step-up controller provides photographers with dependable power management, leading in better shots and longer shooting sessions.

To summarize, the L6920DTR’s versatility and efficiency make it an important component for a wide range of battery-powered devices in a variety of industries. The L6920DTR plays a critical role in improving the functioning and usefulness of modern electronic gadgets, whether it’s prolonging the battery life of mobile devices, improving the performance of handheld equipment, or ensuring reliable power for GPS and digital cameras.

Using the L6920DTR

To harness the benefits of the L6920DTR in your project, follow these general guidelines:

Input Voltage Selection

  • Before incorporating the L6920DTR into your project, confirm that the controller’s input voltage falls within its defined range of 0.6V to 5.5V. This is essential for the device to function properly.

Output Voltage Configuration

  • Determine the output voltage requirements for your project. The L6920DTR supports both fixed and variable output voltages.
  • Choose between 3.3V and 5V for set output voltages, depending on the voltage requirements of your application.
  • If your project requires output voltage flexibility, the L6920DTR allows you to alter the output voltage from 2V to 5.2V to meet unique application requirements.

External Components

  • The L6920DTR is designed to run efficiently with little external components. To guarantee optimal functioning, see the device’s datasheet and application notes for the recommended external components and their values.
  • Input and output capacitors, inductors, and resistors are examples of typical components.

Efficiency Optimization

  • Consider the load conditions and change the L6920DTR properly to enhance the efficiency of your project.
  • Monitoring the battery voltage is critical, particularly in devices that have low battery detection functions. This ensures that when the battery voltage falls below a set threshold, the controller may take necessary action, preventing sudden shutdowns and saving battery life.

Protection Mechanisms

  • Take use of the L6920DTR’s reverse battery protection feature. This feature is intended to protect your electronics as well as the device itself in the event of an accidental reverse battery connection.
  • You may prevent harm and ensure the continuous reliability of your project by incorporating reverse battery protection.

Application-Specific Considerations

  • Customize your design to meet the specific needs of your application. Consider existing requirements, form factor limitations, and environmental circumstances.
  • Ensure that the L6920DTR is seamlessly integrated into your project, taking into mind any unique requirements of your application.

By following these detailed instructions, you will be able to fully utilize the features of the L6920DTR step-up controller in your project. This improves power efficiency, battery life, and the dependability of your battery-powered devices across a wide range of applications.


In conclusion, the L6920DTR step-up controller is an invaluable tool for engineers and designers working on battery-powered devices. It’s a dependable alternative for optimizing power management in numerous devices due to its remarkable capabilities and extensive uses. The L6920DTR improves efficiency and battery life whether you’re designing a handheld device, a communication device, or a portable sensor.

Contact ICRFQ, China’s leading electronic component wholesaler, to take advantage of the L6920DTR’s advantages. Let’s go on this adventure together and discover the full capabilities of this amazing controller. Contact us immediately to increase the level of originality in your designs. Your next breakthrough is just around the corner.

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