High-Efficiency Boost Converter for Portable Applications
について LM2623 is a high-efficiency, step-up DC-DC converter designed by テキサス・インスツルメンツ（TI） to meet the power demands of portable and battery-powered devices. This compact, versatile boost converter integrates a 1A switch and operates at a high switching frequency, making it ideal for space-constrained applications. With its adjustable output voltage and low startup voltage, it delivers reliable performance across a wide range of input conditions.
Engineered for designers seeking a compact and efficient power solution, this device is widely adopted in consumer electronics, industrial tools, and wireless communication systems. Its robust feature set and proven reliability make it a preferred choice among engineers and OEMs worldwide.
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技術仕様と電気的特性
The following table outlines the key technical parameters of the device:
| パラメータ | 価値 | 単位 |
|---|---|---|
| 入力電圧範囲 | 0.8 to 14 | V |
| 出力電圧 | 調節可能 | V |
| スイッチ電流制限 | 1 | A |
| スイッチング周波数 | 600 kHz (typical) | Hz |
| 静止電流 | 2.7 | mA |
| Shutdown Current | 0.1 | μA |
| パッケージタイプ | MSOP-8, SOT-23-5 | – |
| 動作温度範囲 | -40 から +85 | °C |
Why This Boost Converter Outperforms Typical Alternatives
Compared to conventional boost converters, this device offers several パフォーマンスの利点 that make it a standout choice for engineers and system designers:
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- High Switching Frequency: Operating at 600 kHz, it allows the use of smaller inductors and capacitors, reducing overall board space and cost.
- Low Startup Voltage: With a startup voltage as low as 0.8V, it is ideal for single-cell battery applications, ensuring longer battery life and better energy utilization.
- Integrated Power Switch: The built-in 1A switch simplifies design and reduces external component count, improving reliability and reducing BOM cost.
- 低静止電流： At just 2.7 mA, it minimizes power loss during operation, making it suitable for energy-sensitive applications.
- Compact Packaging: Available in MSOP-8 and SOT-23-5 packages, it supports high-density PCB layouts in portable devices.
These features make it a superior alternative to traditional boost converters that often require external switches, operate at lower frequencies, or have higher startup voltages. The result is a more efficient, compact, and cost-effective power solution.
産業用および民生用電子機器における代表的な用途
This device is widely used in a variety of applications where efficient voltage boosting is essential. Common use cases include:
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- バッテリー駆動の機器： Ideal for single-cell lithium-ion or alkaline battery systems.
- Handheld Instruments: Used in portable measurement tools and diagnostic equipment.
- Wireless Communication Devices: Powers RF modules and transceivers in IoT and mobile systems.
- Industrial Sensors: Supplies regulated voltage to low-power industrial monitoring systems.
- コンシューマー・エレクトロニクス Powers LED drivers, MP3 players, and digital cameras.
テキサス・インスツルメンツパワーマネージメントで信頼される企業
テキサス・インスツルメンツ（TI） is a globally recognized leader in analog and embedded processing technologies. With decades of innovation in power management ICs, TI delivers reliable, high-performance solutions that meet the evolving needs of industrial, automotive, and consumer markets. The LM2623 is a testament to TI’s commitment to quality, efficiency, and design flexibility.
Engineers and OEMs trust TI products for their proven performance, extensive documentation, and long-term availability. The LM2623 is backed by TI’s comprehensive support ecosystem, including reference designs, application notes, and evaluation modules.
よくある質問（FAQ）
1. What is the maximum output current supported by this device?
The device integrates a 1A switch, which allows it to support output currents up to 1A depending on input voltage and external component selection. Proper thermal management is recommended for continuous operation at high loads.
2. Can this boost converter be used with a single AA battery?
Yes, it can operate with input voltages as low as 0.8V, making it suitable for single-cell AA or AAA battery-powered applications. This feature is particularly useful in low-voltage startup scenarios.
3. What are the available package options?
The device is available in two compact packages: MSOP-8 and SOT-23-5. These small form factors are ideal for space-constrained designs in portable and handheld devices.
4. How does the high switching frequency benefit my design?
A 600 kHz switching frequency allows the use of smaller inductors and capacitors, which reduces PCB area and component cost. It also improves transient response and overall system efficiency.
5. Is this device suitable for industrial temperature ranges?
Yes, it supports an operating temperature range of -40°C to +85°C, making it suitable for industrial environments where temperature stability and reliability are critical.
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