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LM34919价格

参考价格：￥11.4241

型号：LM34919BQTL/NOPB 品牌：TI 备注：这里有LM34919多少钱，2025年最近7天走势，今日出价，今日竞价，LM34919批发/采购报价，LM34919行情走势销售排行榜，LM34919报价。

型号	功能描述	生产厂家企业	LOGO
LM34919	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator FEATURES • Integrated N-Channel buck switch • Integrated start-up regulator • Input Voltage Range: 8V to 40V • No loop compensation required • Ultra-Fast transient response • Operating frequency remains constant with load current and input voltage • Maximum switching frequency: 2.0 MHz •	TI 德州仪器	TI
LM34919	40V, 600 mA Step Down COT Switching Regulator 文件：369.37 Kbytes Page：18 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator 文件：387.78 Kbytes Page：18 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.044119 Mbytes Page：21 Pages	TI 德州仪器	TI
LM34919	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.0385 Mbytes Page：21 Pages	TI 德州仪器	TI
LM34919	2x1.5mm、8V 至 40V 宽输入电压、600mA、恒定导通时间非同步降压稳压器	TI 德州仪器	TI
LM34919B	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919B-Q1	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BQTLSLASHNOPB	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BQTLSLASHNOPB.A	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BQTLSLASHNOPB.B	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BQTLXSLASHNOPB	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BQTLXSLASHNOPB.A	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BQTLXSLASHNOPB.B	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BTLSLASHNOPB	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BTLSLASHNOPB.A	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BTLSLASHNOPB.B	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BTLXSLASHNOPB	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BTLXSLASHNOPB.A	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919BTLXSLASHNOPB.B	LM34919B Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 Grade 1 Qualified (-40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz (VIN=14V,Vo=3.3V) • Input Voltage Range: 6V to 40V • Integrated N-Channel Buck Switch • Integrated Startup Regulator • No loop compensation Required • Ultra-Fast transient Response • Operating	TI 德州仪器	TI
LM34919C-Q1	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQSDSLASHNOPB	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQSDSLASHNOPB.A	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQSDXSLASHNOPB	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQSDXSLASHNOPB.A	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQTLSLASHNOPB	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQTLSLASHNOPB.A	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQTLSLASHNOPB.B	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQTLXSLASHNOPB	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQTLXSLASHNOPB.A	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919CQTLXSLASHNOPB.B	LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator 1FEATURES 2• AEC-Q100 qualified (Tj = -40°C to 125°C) • Maximum Switching Frequency: 2.6 MHz • Input Voltage Range: 4.5 V to 50 V • Integrated N-Channel buck switch • Integrated Start-Up Regulator • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains	TI 德州仪器	TI
LM34919TLSLASHNOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator FEATURES • Integrated N-Channel buck switch • Integrated start-up regulator • Input Voltage Range: 8V to 40V • No loop compensation required • Ultra-Fast transient response • Operating frequency remains constant with load current and input voltage • Maximum switching frequency: 2.0 MHz •	TI 德州仪器	TI
LM34919TLSLASHNOPB.A	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator FEATURES • Integrated N-Channel buck switch • Integrated start-up regulator • Input Voltage Range: 8V to 40V • No loop compensation required • Ultra-Fast transient response • Operating frequency remains constant with load current and input voltage • Maximum switching frequency: 2.0 MHz •	TI 德州仪器	TI
LM34919TLSLASHNOPB.B	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator FEATURES • Integrated N-Channel buck switch • Integrated start-up regulator • Input Voltage Range: 8V to 40V • No loop compensation required • Ultra-Fast transient response • Operating frequency remains constant with load current and input voltage • Maximum switching frequency: 2.0 MHz •	TI 德州仪器	TI
LM34919TLXSLASHNOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator FEATURES • Integrated N-Channel buck switch • Integrated start-up regulator • Input Voltage Range: 8V to 40V • No loop compensation required • Ultra-Fast transient response • Operating frequency remains constant with load current and input voltage • Maximum switching frequency: 2.0 MHz •	TI 德州仪器	TI
LM34919TLXSLASHNOPB.A	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator FEATURES • Integrated N-Channel buck switch • Integrated start-up regulator • Input Voltage Range: 8V to 40V • No loop compensation required • Ultra-Fast transient response • Operating frequency remains constant with load current and input voltage • Maximum switching frequency: 2.0 MHz •	TI 德州仪器	TI
LM34919TLXSLASHNOPB.B	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator FEATURES • Integrated N-Channel buck switch • Integrated start-up regulator • Input Voltage Range: 8V to 40V • No loop compensation required • Ultra-Fast transient response • Operating frequency remains constant with load current and input voltage • Maximum switching frequency: 2.0 MHz •	TI 德州仪器	TI
LM34919_08	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator 文件：387.78 Kbytes Page：18 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919_14	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.0385 Mbytes Page：21 Pages	TI 德州仪器	TI
LM34919_15	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.044119 Mbytes Page：21 Pages	TI 德州仪器	TI
LM34919B	Evaluation Board provides the design engineer with a fully functional 文件：647.8 Kbytes Page：12 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919B	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator 文件：497.92 Kbytes Page：20 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919B	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919B_1	Evaluation Board provides the design engineer with a fully functional 文件：647.8 Kbytes Page：12 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919B_15	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919B-Q1	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919B-Q1	汽车类 2x1.75mm、6V 至 40V 宽输入电压、600mA、2.6MHz 恒定导通时间非同步降压稳压器	TI 德州仪器	TI
LM34919BQTL	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator 文件：497.92 Kbytes Page：20 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919BQTL/NOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919BQTL/NOPB	封装/外壳：10-WFBGA 功能：降压包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带描述：IC REG BUCK ADJ 600MA 10USMD 集成电路（IC）稳压器 - DC-DC 开关稳压器	TI2 德州仪器	TI2
LM34919BQTL/NOPB	封装/外壳：10-WFBGA 功能：降压包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带描述：IC REG BUCK ADJ 600MA 10USMD 集成电路（IC） DC DC 开关稳压器	TI2 德州仪器	TI2
LM34919BQTLSLASHNOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919BQTLX	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator 文件：497.92 Kbytes Page：20 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919BQTLX/NOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919BQTLXSLASHNOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919BTL	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator 文件：497.92 Kbytes Page：20 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919BTL/NOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919BTLSLASHNOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI
LM34919BTLX	Ultra Small 40V, 600 mA Constant On-Time Buck Switching Regulator 文件：497.92 Kbytes Page：20 Pages	NSCNational Semiconductor (TI) 美国国家半导体美国国家半导体公司	NSC
LM34919BTLX/NOPB	Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator 文件：1.27836 Mbytes Page：27 Pages	TI 德州仪器	TI

LM34919产品属性

类型
描述
型号
LM34919
制造商
NSC
制造商全称
National Semiconductor
功能描述
40V, 600 mA Step Down COT Switching Regulator

LM34919供应商更多...

更新时间：2025-10-4 14:10:00

IC供应商	芯片型号	品牌	批号	封装	库存	备注	价格
深圳市赛尔通科技有限公司	LM34919TL/NOPB	NSC	23+	10-SMD	65600		询价
深圳市能元时代电子有限公司	LM34919TLX/NOPB	NSC	23+	SMD	12800	公司只有原装欢迎来电咨询。	询价
深圳市威雅利发展有限公司	LM34919TLX	NSC	11+	10DSBGA	445	一级代理,专注军工、汽车、医疗、工业、新能源、电力	询价
惠芯易购（深圳）科技有限公司	LM34919CQTL/NOPB	TI/德州仪器	14+	DSBGA-12	15	全新原装进口自家现货假一赔十	询价
深圳市英科美电子有限公司	LM34919CQSD	TI/德州仪器	2223+	WSON-12	26800	只做原装正品假一赔十为客户做到零风险	询价
深圳市坤融电子科技有限公司	LM34919TL/NOPB		24+	SOP3.9m	6000	美国德州仪器TEXASINSTRUMENTS原厂代理辉华拓展内地现	询价
深圳市英特法电子科技有限公司	LM34919CQSD/NOPB	TI/德州仪器	2023+	WSON-12	6000	原装正品现货、支持第三方检验、终端BOM表可配单提供	询价
深圳市乾能惠电子有限公司	LM34919CQSD	TI/德州仪器	24+	N/A	20000	原厂直供原装正品	询价
深圳市昌和盛利电子有限公司	LM34919TL/NOPB	ns	NEW	10-SMD	9823	代理全系列销售, 全新原装正品,价格优势,长期供应,量大可订	询价
深圳市众芯源半导体有限公司	LM34919CQSDX/NOPB	TI(德州仪器)	24+	N/A	20000	现货	询价

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2012-11-29
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LM3525提供了通用串行总线标准的电源开关和过电流保护的所有主机端口的应用。单端口设备是笔记本电脑的理想选择一个端口供电的手持式PC应用。一个1毫秒的故障标志输出延迟可防止错误的过流浪涌电流造成在报告热插拔事件。LM3525接受2.7V至输入电压5.5V，允许使用一个基于设备的浪涌电流限制器3.3V的USB外设，以及根和自供电集线器在5.5V。使能输入接受3.3V和5.0V逻辑阈值。体积小，低RON和1毫秒的故障标志延迟LM3525一个不错的选择，以及作为伙同根集线器在空间至关重要的自供电集线器的电源控制。应用 * 通用串行总线（USB）根集线器，包括
2012-11-13

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