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L6920DBTR
+BOMIC REG BST ADJ/1.8V 800MA 8MSOP
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ManufacturerSTMicroelectronics
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Mfr. Part #L6920DBTR
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Datasheet L6920DBTR DataSheet
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In Stock5989
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Specifications
| Attribute | Value |
| 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 |
Overview
Description
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
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
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
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.