L6920DBTR

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L6920DBTR

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IC REG BST ADJ/1.8V 800MA 8MSOP

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Spezifikationen

Attribut Wert
PartStatus Active
Function Step-Up
OutputConfiguration Positive
Topology Boost
OutputType Adjustable (Fixed)
NumberofOutputs 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)
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
SupplierDevicePackage 8-MSOP
BaseProductNumber L6920

Übersicht

Description

The L6920DBTR is a DC-DC step-up converter designed by STMicroelectronics. It is used primarily to boost low input voltages to higher levels, making it suitable for battery-operated devices and applications requiring efficient power management. The device operates with a wide input voltage range, typically from 0.6V to 5.5V, and can deliver output voltages up to 5.5V.
Key features include high efficiency (up to 90%), low quiescent current, and a built-in synchronous rectifier, which reduces the need for external components and improves overall efficiency. The L6920DBTR also incorporates features such as short-circuit protection, over-temperature protection, and low-battery detection to enhance reliability and safety. Its compact size and minimal external component requirements make it ideal for portable electronics, including personal digital assistants (PDAs), mobile phones, and other handheld devices. The device is typically housed in a small SOT-23 package, making it suitable for space-constrained applications.

Equivalent

The L6920DBTR is a step-up DC-DC converter. Equivalent products include:
1. TPS61097-33 by Texas Instruments: A boost converter with similar voltage and current specifications.
2. MIC2287 by Microchip Technology: Another efficient boost converter for battery-powered applications.
3. LT1930 by Analog Devices (formerly Linear Technology): Offers similar functionality in boost conversion.
4. APW7120 by Anpec: Also serves as a step-up DC-DC converter with comparable specs.
These alternatives vary in features and exact specifications, so reviewing datasheets is recommended.

Features

The L6920DBTR is a highly efficient monolithic synchronous step-down regulator. It is designed for applications that require compactness and high efficiency. Key features include:
1. Input Voltage Range: Operates from 2 V to 5.5 V, making it suitable for single-cell Li-ion batteries and other low-voltage sources.

2. Output Current: Capable of delivering up to 600 mA continuous output current.
3. Efficiency: Achieves high efficiency, up to 95%, due to its synchronous rectification architecture.
4. Quiescent Current: Offers low quiescent current for extended battery life in portable applications.
5. Switching Frequency: Fixed at 1.4 MHz, allowing the use of small external components, which is ideal for space-constrained designs.
6. Soft-Start: Built-in soft-start feature to limit inrush current during startup.
7. Protection Features: Includes overcurrent protection and thermal shutdown to safeguard the device and connected components.
8. Package: Available in a small DFN package, contributing to its suitability for compact designs.
This combination of features makes the L6920DBTR suitable for applications such as mobile phones, personal digital assistants (PDAs), and portable instruments.

Pinout

The L6920DBTR is a battery charger IC manufactured by STMicroelectronics. It is typically used for charging single-cell Li-Ion/Li-Polymer batteries. The IC comes in a small DFN8 package, which has 8 pins. Here is a concise description of the pin functions:
1. IN: Input voltage pin for the charger, connected to the external power source.
2. GND: Ground pin, serves as the reference point for the circuit.
3. OUT: Output pin, connected to the battery being charged.
4. SENSE: Measures the charging current and voltage, ensuring proper battery charging.
5. EN: Enable pin, used to enable or disable the charger.
6. COMP: Compensation pin, used for stability and to optimize performance through external components.
7. VSET: Voltage set pin, sets the output voltage level for charging.
8. ISET: Current set pin, controls the charge current by setting it to a specific value with an external resistor.
This IC is designed for efficient battery charging with minimal external components, providing safety and reliability features.

Manufacturer

The L6920DBTR is manufactured by STMicroelectronics, a global semiconductor company. STMicroelectronics is known for designing, developing, manufacturing, and marketing a wide range of semiconductor products. These products are used in a variety of applications across different industries, including automotive, industrial, personal electronics, and communications equipment. The company focuses on technological innovation and has a strong presence in analog, digital, and mixed-signal technologies.

Application

The L6920DBTR is a low-quiescent current step-up DC-DC converter. It is commonly used in applications that require efficient power conversion from a lower to a higher voltage. Key application areas include battery-powered devices such as portable electronics, wearables, and medical instruments. Its efficiency, compact size, and ability to operate with low input voltages make it suitable for extending battery life in devices like smartphones, digital cameras, and IoT devices. Additionally, it is used in systems requiring stable voltage levels from fluctuating battery sources. The L6920DBTR is favored in designs emphasizing battery efficiency and minimal power consumption.

Package

The L6920DBTR is a step-down DC-DC converter by STMicroelectronics, packaged in a TSOT-23-5. This package type is a small-outline, surface-mount package with five leads, suitable for compact applications requiring efficient voltage regulation.

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