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S-8533

更新时间： 2024-02-01 09:29:31
品牌 Logo 应用领域
精工 - SII 开关控制器
页数 文件大小 规格书
31页 410K
描述
STEP-DOWN, SYNCHRONOUS PWM CONTROL SWITCHING REGULATOR CONTROLLER

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中文翻译

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S-8533 数据手册

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Rev.2.3_00  
STEP-DOWN, SYNCHRONOUS PWM CONTROL  
SWITCHING REGULATOR CONTROLLER  
S-8533 Series  
The S-8533 Series is a synchronous PWM control CMOS step-down  
switching regulator controller that includes a reference voltage source,  
synchronous circuit, oscillation circuit, error amplifier, phase  
compensation circuit, and PWM controller.  
An efficient step-down switching regulator can be realized simply by  
adding external P-channel and N-channel power MOS FETs, one coil,  
and three capacitors.  
Since the oscillation frequency is a high 300 kHz, the S-8533 can be  
used to configure a high efficiency step-down switching regulator  
capable of driving high output current using small external parts and a  
3 to 10% increase in efficiency is obtained compared to conventional  
step-down switching regulators.  
The 8-Pin TSSOP package and high oscillation frequency make the S-  
8533 ideal as the main power supply for portable devices.  
„ Features  
• Synchronous rectification system realizing high efficiency (typ. 94%)  
• Use at maximum duty ratio = 100% and use of a battery up to maximum life is possible by using P-channel and N-  
channel power MOS FETs externally.  
• Oscillation frequency :  
• Input voltage :  
300 kHz typ.  
2.7 to 16.0 V  
• Output voltage :  
1.25 V  
1.3 to 6.0 V, selectable in 0.1 V steps  
• Output voltage accuracy : ±2.0%  
• Soft-start function set by an external capacitor (CSS  
• Shutdown function  
)
• Small package :  
8-Pin TSSOP  
• Lead-free products  
„ Applications  
• Constant voltage power supply for hard disks and DVD drivers  
• Power supplies for portable devices, such as digital cameras, PDAs, electronic organizers, and cellular phones  
• Main or sub power supply for notebook PCs and peripherals  
• Constant voltage power supply for cameras, video equipment, and communication equipment  
„ Package  
Drawing Code  
Package Name  
Package  
FT008-A  
Tape  
Reel  
8-Pin TSSOP  
FT008-E  
FT008-E  
Seiko Instruments Inc.  
1
1234567...31

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