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利盛達科技讓電源設計更便捷可靠|聯系電話：13928434054 |
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利盛達科技讓電源設計更便捷可靠|聯系電話：13928434054 |
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>產品中心 >按類型分 >低壓降壓Buck DC/DC > RT8010
【RT8010 】1.5MHz,1A 帶軟啟功能的同步降壓型變換器
【RT8010 】概述
RT8010 是一款采用固定頻率，電流模，PWM架構的降壓型變換器。該芯片集成了主開關管和同步管以提高效率。2.5V到5.5V的輸入電壓范圍使得RT8010 適用于采用單節鋰離子電池或3節NiMH/NiCd電池的便攜系統。輸出電壓可低至0.6V。RT8010 可提供1A的輸出電流，并可提供100%占空比的低壓降運行，延長了電池在便攜系統中的壽命。 開關頻率在內部被設定為1.5MHz，因此可使用小型表面貼裝電感器和電容器。內置同步管提高了效率且不需要外接肖特基二極管。RT8010 有可調版本和1.2V、1.8V和3.3V固定輸出版本。
【RT8010 】特點:
RT8010 效率高達96%
1.5MHz固定開關頻率
RT8010 高達1A的輸出電流
RT8010 典型270μA靜態電流
2.5V至5.5V的輸入電壓范圍
RT8010 低至0.6V的可調輸出電壓
100%占空比低壓降工作
RT8010 無需肖特基二極管
RT8010 短路和過溫保護
RT8010 出色的穩壓和負載瞬態響應
RT8010 關斷電流＜1μA
RT8010 帶軟啟功能
RT8010 過壓保護
RT8010 可提供1.2V、1.8V、3.3V和可調輸出電壓
TDFN-6封裝
RT8010 符合RoHS規范及Pb-Free
【RT8010 】應用
蜂窩電話
便攜媒體播放器/MP3播放器
數碼相機設備和攝影機
便攜儀器
PC設備
| RT8010 General Description |
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The RT8010/A is a high efficiency Pulse-Width-Modulated (PWM) step-down DC/DC converter. Capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V, the RT8010/A is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources such as cellular phones, PDAs and hand-held devices.Two operating modes are available including : PWM/Low-Dropout autoswitch and shutdown modes. The Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application.The RT8010/A enters Low Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper P-MOSFET. RT8010/A enter shut-down mode and consumes less than 0.1μA when EN pin is pulled low.The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operating frequency of 1.5MHz. This along with small WDFN-6L 2x2 and WQFN-16L 3x3 package provides small PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection. |
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RT8010 Ordering Info |
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Note : |
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RT8010 Features |
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• +2.5V to +5.5V Input Range
• Output Voltage (Adjustable Output From 0.6V to VIN) ♦ RT8010 : 1.0V, 1.2V, 1.5V, 1.6V, 1.8V, 2.5V and 3.3V Fixed/Adjustable Output Voltage ♦ RT8010A Adjustable Output Voltage Only • 1A Output Current • 95% Efficiency • No Schottky Diode Required • 1.5MHz Fixed-Frequency PWM Operation • Small 6-Lead WDFN and 16-Lead WQFN Package • RoHS Compliant and 100% Lead (Pb)-Free |
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RT8010 Application |
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• Mobile Phones
• Personal Information Appliances • Wireless and DSL Modems • MP3 Players • Portable Instruments |
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RT8010 Pin Configurations |
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(TOP VIEW) |
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RT8010 Typical Applications Circuit |
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Figure 1. Fixed Voltage Regulator
with R2 = 300kΩ to 60kΩ so the IR2 = 2μA to 10μA, and (R1 x C1) should be in the range between 3x10-6 and 6x10-6 for component selection. Figure 2. Adjustable Voltage Regulator |
