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S8550 数据表 (PDF) - Seiko Instruments Inc

S8550 Datasheet PDF - Seiko Instruments Inc
部件名 S8550
下载  S8550 下载

文件大小   1777.3 Kbytes
  31 Pages
制造商  SII [Seiko Instruments Inc]
网页  http://www.sii.co.jp
标志 SII - Seiko Instruments Inc
功能描述 STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS

S8550 Datasheet (PDF)

Go To PDF Page 下载 数据表
S8550 Datasheet PDF - Seiko Instruments Inc

部件名 S8550
下载  S8550 Click to download

文件大小   1777.3 Kbytes
  31 Pages
制造商  SII [Seiko Instruments Inc]
网页  http://www.sii.co.jp
标志 SII - Seiko Instruments Inc
功能描述 STEP-DOWN, BUILT-IN FET, SYNCHRONOUS RECTIFICATION, PWM CONTROL SWITCHING REGULATORS

S8550 数据表 (HTML) - Seiko Instruments Inc

Back Button S8550 Datasheet HTML 1Page - Seiko Instruments Inc S8550 Datasheet HTML 2Page - Seiko Instruments Inc S8550 Datasheet HTML 3Page - Seiko Instruments Inc S8550 Datasheet HTML 4Page - Seiko Instruments Inc S8550 Datasheet HTML 5Page - Seiko Instruments Inc S8550 Datasheet HTML 6Page - Seiko Instruments Inc S8550 Datasheet HTML 7Page - Seiko Instruments Inc S8550 Datasheet HTML 8Page - Seiko Instruments Inc S8550 Datasheet HTML 9Page - Seiko Instruments Inc S8550 Datasheet HTML 10Page - Seiko Instruments Inc Next Button 

S8550 产品详情

The S-8550 Series is a CMOS synchronous rectification step-down switching regulator which mainly consists of a reference voltage circuit, an oscillator, an error amplifier, a phase compensation circuit, a PWM controller, an under voltage lockout circuit (UVLO), a current limit circuit, and a power MOS FET. The oscillation frequency is high at 1.2 MHz, so a high efficiency, large output current, step-down switching regulator can be achieved by using small external parts.
The built-in synchronous rectification circuit makes achieving high efficiency easier compared with conventional step-down switching regulators. A ceramic capacitor can be used as an output capacitor. High-density mounting is supported by adopting packages small SOT-23-5 and super-small and thin SNT-8A.

■ Features
• Oscillation frequency: 1.2 MHz
• Input voltage range: 2.0 V to 5.5 V
• Output voltage range: Arbitrarily settable by external output voltage setting resistor
• Output current: 600 mA
• Reference voltage: 0.6 V ±2.0%
• Efficiency: 92%
• Soft-start function: 1 ms typ.
• Shutdown function: Shutdown current consumption : 1.0 μA max.
• Built-in current limit circuit
• Pch power MOS FET on-resistance: 0.4 Ω typ.
• Nch power MOS FET on-resistance: 0.3 Ω typ.
• Constant continuous mode operation (no light load mode)
• Lead-free, Sn 100%, halogen-free*1

■ Applications
• Mobile devices, such as mobile phones, Bluetooth devices, wireless devices, digital audio players, digital still cameras, portable DVD players, and portable CD players




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