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LT3494EDDB
+BOMSwitching Voltage Regulators LT3494 - Micropower Low Noise Boost Converters with Output Disconnect
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Nhà sản xuấtAnalog Devices
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Ông. Phần #LT3494EDDB
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Bảng dữ liệu LT3494EDDB DataSheet
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Description
Key features include a low quiescent current, high efficiency, and an integrated power switch which simplifies the design and reduces the need for external components. It also features a shutdown mode to further reduce power consumption. The LT3494EDDB comes in a compact 8-lead DFN package, allowing for efficient thermal management and easy integration into various electronic designs.
This converter is particularly used in applications like portable electronics, medical devices, and other situations where maintaining extended battery life is crucial. Its robust design ensures reliable performance under varying operating conditions.
Equivalent
1. Texas Instruments: TPS61041 - a similar boost converter.
2. Microchip Technology: MCP1640 - a non-synchronous boost converter.
3. ON Semiconductor: NCP1402 - a DC-DC boost converter.
4. Rohm: BD8392GUL - a high-efficiency boost converter.
Ensure to check specific technical requirements like voltage, current ratings, and package type when selecting alternatives.
Features
1. Wide Input Voltage Range: Operates from 2.3V to 20V, allowing flexibility in power supply sources.
2. High Efficiency: Delivers up to 90% efficiency, thereby minimizing heat generation and power loss.
3. Internal Power Switch: Integrates a 30V, 1.3A switch, reducing the need for external components.
4. LED Current Regulation: Provides accurate LED current regulation, which ensures consistent brightness across varying conditions.
5. Dimming Capability: Supports analog and PWM dimming for adjustable light output to suit different applications.
6. Open LED Protection: Built-in protection that prevents damage in the event of an open-circuit situation with the LEDs.
7. Compact Package: Available in a 3mm × 2mm DFN-8 package, making it suitable for space-constrained designs.
8. Soft-Start Feature: Reduces inrush current during startup, enhancing reliability and longevity.
These features make the LT3494EDDB ideal for applications requiring efficient and reliable LED driving, such as backlighting, display panels, and portable lighting.
Pinout
- Pin Count: The LT3494EDDB comes in a 6-lead (or pin) DFN package.
- Key Functions:
- SW (Switch Node): Connects to the inductor and is involved in the switch cycle.
- GND (Ground): Common ground for the device.
- FB (Feedback): Used for setting the output voltage through an external resistor divider.
- SHDN (Shutdown): Used to enable or disable the converter.
- VIN (Input Voltage): Supplies the input voltage to the converter.
- VOUT (Output Voltage): Provides the regulated output voltage.
The LT3494EDDB is suitable for applications such as OLED displays, biasing of photo diodes, and other low-power systems that require step-up voltage conversion.