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部品型式

TPS40004DGQ

製品説明
仕様・特性

TPS40000, TPS40001 TPS40002, TPS40003 TPS40004, TPS40005 SLUS507D − JANUARY 2002 − REVISED NOVEMBER 2005 LOWĆINPUT VOLTAGEĆMODE SYNCHRONOUS BUCK CONTROLLER FEATURES D Operating Input Voltage 2.25 V to 5.5 V D Output Voltage as Low as 0.7 V D 1% Internal 0.7 V Reference D Predictive Gate Drivet N-Channel MOSFET APPLICATIONS D Networking Equipment D Telecom Equipment D Base Stations D Servers D DSP Power D Power Modules Drivers for Higher Efficiency D Externally Adjustable Soft-Start and D D D D D D Overcurrent Limit Source-Only Current or Source/Sink Current Versions for Starting Into VOUT Pre-Bias 10-Lead MSOP PowerPadt Package for Higher Performance Thermal Shutdown Internal Boostrap Diode Fixed-Frequency, Voltage-Mode Control − TPS40000/1/4 300-kHz − TPS40002/3/5 600-kHz DESCRIPTION The TPS4000x are controllers for low-voltage, non-isolated synchronous buck regulators. These controllers drive an N-channel MOSFET for the primary buck switch, and an N-channel MOSFET for the synchronous rectifier switch, thereby achieving very high-efficiency power conversion. In addition, the device controls the delays from main switch off to rectifier turn-on and from rectifier turn-off to main switch turn-on in such a way as to minimize diode losses (both conduction and recovery) in the synchronous rectifier with TI’s proprietary Predictive Gate Drivet technology. The reduction in these losses is significant and increases efficiency. For a given converter power level, smaller FETs can be used, or heat sinking can be reduced or even eliminated. SIMPLIFIED APPLICATION DIAGRAM VIN TPS40000 1 ILIM BOOT 10 2 FB HDRV 9 3 COMP SW 8 VDD 7 LDRV 6 4 5 VOUT SS/SD GND UDG−01141 PowerPADt and Predictive Gate Drivet are trademarks of Texas Instruments Incorporated. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright  2005, Texas Instruments Incorporated www.ti.com 1

ブランド

TI

会社名

Texas Instruments Incorporated

本社国名

U.S.A

事業概要

世界25ヶ国以上に製造・販売拠点を有する国際的な半導体企業であり、デジタル情報家電、ワイヤレス、ブロードバンド市場に欠かせないデジタル信号処理を行うDSPと、それに関連するアナログIC、マイクロコントローラを主力製品としている。

供給状況

 
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