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AP1512-33N中文资料

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AP1512/A

50KHz, 2A/3A PWM Buck DC/DC Converter This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev.1.1 Oct. 14, 2005 1/12 󰂄 Features - Output voltage: 3.3V, 5V, 12V and adjustable output version - Adjustable version output voltage range, 1.23V to 37V+4% - 50KHz +15% fixed switching frequency - Voltage mode non-synchronous PWM control - Thermal-shutdown and current-limit protection - ON/OFF shutdown control input - Operating voltage can be up to 60V - Output load current: 2A (for AP1512) 3A (for AP1512A) - Low power standby mode - Built-in switching transistor on chip - TO220-5L, TO220-5L(R) and TO263-5L Pb-free packages 󰂄 Applications - Simple High-efficiency step-down regulator - On-card switching regulators - Positive to negative converter 󰂄 General Description The AP1512/A is a monolithic IC that design for a step-down DC/DC converter, and own the ability of driving a 2A (3A for AP1512A) load without additional transistor component. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. The AP1512/A operates at a switching frequency of 50KHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The packages are available in a standard 5-lead TO-220 package and a 5-lead TO-263. 󰂄 Pin Assignments

TO220-5L( Top View )( Top View )

TO263-5L

1 VIN5 SD4 FB3 Gnd2 Output

Metal Tab GND

1 VIN5 SD4 FB3 Gnd2 Output

󰂄 Pin Descriptions Name Description VIN Operating voltage input Output Switching output Gnd Ground FB Output voltage feedback control SD ON/OFF Shutdown 元器件交易网www.cecb2b.com

AP1512/A

50KHz, 2A/3A PWM Buck DC/DC Converter Anachip Corp. www.anachip.com.tw Rev.1.1 Oct. 14, 2005 2/12 󰂄 Ordering Information

Package T5: TO220-5L K5: TO263-5LOutput VersionAP1512 X XX X X

PackingBlank : TubeA : TapingBlank : Adjustable-33 : 3.3V-50 : 5.0V-12 : 12V T5R: TO220-5L(R)Part NumberBlank: 2AA : 3A 󰂄 Block Diagram

CurrentSourcebias1.235VReference2.5VRegulator

50KHzOSC.Startup

++_+_

ThermalLimitPre-driverComp

Comp

GndOutputVINSD

FB220mV200mV

2ASwitch+__AmpCompFrequecycompen-sation(3A forAP1512A)

元器件交易网www.cecb2b.com

AP1512/A

50KHz, 2A/3A PWM Buck DC/DC Converter

Anachip Corp. www.anachip.com.tw Rev.1.1 Oct. 14, 2005 3/12 󰂄 Absolute Maximum Ratings Symbol Parameter Rating Unit VCC Supply Voltage +63 V VSD ON/OFF Pin input voltage -0.3 to +40 V VFB Feedback Pin voltage -0.3 to +40 V VOUT Output voltage to Ground -1 V PD Power dissipation Internally limited W TST Storage temperature -65 to +150 oC TOP Operating temperature -40 to +125 oC VOP Operating voltage +4.5 to +60 V 󰂄 Electrical Characteristics (All Output Voltage Versions) Unless otherwise specified, VIN=30V for all version. ILOAD = 0.5A Symbol Parameter Conditions Min. Typ. Max. Unit 8 IB Feedback bias current VFB=1.3V (Adjustable version only) 5 10 µA 42.5 50 57.5 FOSC oscillator frequency 40 60 KHz 1.4 VSAT saturation voltage IOUT=2A no outside circuit VFB=0V force driver on 1.3 1.5 V

Max. Duty Cycle(ON) VFB=0V force driver on 100 DC Min. Duty cycle(OFF) VFB=12V force driver off 0 % 4.5 ICL current limit for AP1512 peak current no outside circuit VFB=0V force driver on 2.5 3 5.5 A

5 ICL current limit for AP1512A peak current no outside circuit VFB=0V force driver on 3.2 4 6 A

Output = 0 no outside circuit VFB=12V force driver off -250 uA IL Output = -1 Output leakage current VIN=

60V -2 -60 mA IQ Quiescent Current VFB=12V force driver off 5 10 mA 450 ISTBY Standby Quiescent Current ON/OFF pin=5V VIN=60V 350 500 uA VIL Low (regulator ON) - 0.6 VIH ON/OFF pin logic input threshold voltage High (regulator OFF) 2.0 1.3 - V

IH ON/OFF pin logic input current VLOGIC=2.5V (OFF) 0 -5 IL ON/OFF pin input current VLOGIC=0.5V (ON) -0.8 -10 uA

TO220-5L 2.5 θJC Thermal Resistance TO263-5L Junction to case 3.5 oC/W TO220-5L 28 θJA Thermal Resistance With copper area of approximately 3 in2 TO263-5L Junction to ambient 23 oC/W

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251B12F252A2N1中文资料

251B12F252A2N1中文资料

Resistance Range10 K ohms through 200 K ohmsResistance ToleranceStandard: ±20%Special: ±10% and ±30% availableResistance TaperLinear ±5%Insulation Resistance100 megohms minimum @ 250 VDCOperating Temperature-10°C to +70°CRotational Torque3 to 10 gf-cmRotational Life1,000,000 cyclesPower Rating0.01 watt at 50°C derated to no load at 85°CMaximum Operating VoltageMaximum 50 VAC or 5 VDCAngle of RotationTotal Rotation - With Shaft: 180°No Shaft: 360°Effective Rotation: 38°, 40°, 50°, 60°,70°, 85°, 90°or 110°available(Typical joystick control use.)MaterialsHousing: UL 94V-2Shaft / Bushing: UL 94V-2Base UL flame class 94HBShaft InformationFlatted, molded shaftDiameter: 3.96 mm or 5.0 mm,depending on shaft trimMounting InformationBushing mount (unthreaded)Diameter: 7.00 mmLength: 5.00 mmTap Available4°angle at 50% rotation optionalOther taps available - consult CTS

AR151中文资料

AR151中文资料

BUTTON AUTOMOTIVE RECTIFIER E-mail: sales@ Web Site:

VOLTAGE RANGE 50 to 600 Volts AR1505 THRU AR158 ARS1505 THRU ARS158 CURRENT 15.0 Amperes

FEATURES

• Low Leakage • Low forward voltage drop • High current capability • High forward surge current capacity

MECHANICAL DATA

• Case: transfer molded plastic • Epoxy: UL94V-0 rate flame retardant • Lead: Plated slug , solderable per MIL-STD-202 Emethod 208C • Polarity: Color ring denotes cathode end • Mounting Position: any • Weight: 0.064 ounces, 1.82 grams

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

• Ratings at 25℃ ambient temperature unless otherwise specified • Single Phase, half wave, 60HZ, resistive or inductive load • For capacitive load derate current by 20% SYMBOLS AR1505 ARS1505 AR151 ARS151 AR152 ARS152 AR154 ARS154 AR156 ARS156 AR158 ARS158 UNIT

MAL212015152E3中文资料

MAL212015152E3中文资料

For technical questions, contact: aluminumcaps1@Document Number: 28336244Revision: 21-Apr-08120 ATCVishay BCcomponents

Aluminum CapacitorsAxial High Temperature, High Ripple Current

FEATURES•Polarized aluminum electrolytic capacitors,non-solid electrolyte•Axial leads, cylindrical aluminum case,insulated with a blue sleeve•Mounting ring version not available in insulated form•Taped versions up to case Ø 15 x 30 mm available forautomatic insertion•Charge and discharge proof•Extra long useful life: up to 8000hours at 125 °C, highreliability•Lowest ESR levels providing very high ripple currentcapability•Extended temperature range: usable up to 150 °C•Miniaturized, high CV-product per unit volume•Lead diameter Ø d=1.0mm, available on request•Lead (Pb)-free versions are RoHS compliantAPPLICATIONS•Automotive, industrial and telecommunication•Smoothing, filtering, buffering•Low mounting height applications, vibration and shockresistant•SMPS and standard power supplies

血清胱抑素C和N末端脑钠肽前体与慢性心力衰竭患者疾病严重程度及预后的相关性分析

血清胱抑素C和N末端脑钠肽前体与慢性心力衰竭患者疾病严重程度及预后的相关性分析

血清胱抑素C和N末端脑钠肽前体与慢性心力衰竭患者疾病严重程度及预后的相关性分析

安英男;唐敏;赵丽君

【摘 要】目的 探讨血清胱抑素C(CysC)、N末端脑钠肽前体(NT-proBNP)水平与慢性心力衰竭患者疾病严重程度和预后的相关性.方法 选取我院2016年1月—2017年11月收治的慢性心力衰竭患者78例为观察组,另选取同期健康体检者78例为对照组.比较不同心功能分级者CysC、NT-proBNP和心功能指标水平.根据观察组患者住院期间是否发生死亡,分为存活组和死亡组;影响慢性心力衰竭患者预后的相关因素采用Logistic回归分析.结果 观察组不同心功能分级患者CysC、NT-proBNP、左心室身因分数LVEF和左心室舒张期内径LVEDd水平均高于对照组(P<0.05),且CysC、NT-proBNP、LVEDd随心功能分级的增高而上升,LVEF水平随心功能分级的增高而下降(P<0.05).CysC(≥1.25 mg/L)、NT-ProBNP(≥3200

ng/L)、LVEF(<55％)、心功能分级(Ⅲ～Ⅳ级)是慢性心力衰竭患者预后的独立危险因素(P<0.01).结论 CysC、NT-proBNP水平随慢性心力衰竭患者的疾病严重程度而升高,Cy-sC、NT-proBNP水平高的慢性心力衰竭患者,预后较差.

【期刊名称】《解放军医药杂志》

【年(卷),期】2019(031)005

【总页数】4页(P71-74)

【关键词】慢性心力衰竭;血清胱抑素C;脑钠肽;预后;危险因素

【作 者】安英男;唐敏;赵丽君 【作者单位】111000 辽宁 辽阳,辽阳市中心医院心内科;111000 辽宁 辽阳,辽阳市中心医院心内科;111000 辽宁 辽阳,辽阳市中心医院心内科

【正文语种】中 文

【中图分类】R541.6

心力衰竭作为大多数心脏病病程的终末阶段，患者在临床症状和长期病程影响下，身体及经济压力均较重。既往文献报道[1-3]，心脏与肾脏之间存在复杂的双向性联系，慢性心力衰竭患者可因多种因素的影响而出现肾脏损害情况，比如机体血流动力学紊乱、神经内分泌异常激活或长时间服用利尿剂类药物；其中蛋白尿和肾小球滤过率的降低与心血管疾病联系密切。胱抑素C(CysC)、N-末端脑钠肽前体(NT-proBNP)是临床中分别用于评估肾功能及心脏受损情况的主要指标之一。部分学者认为，CysC、NT-proBNP可评估、预测心血管疾病患者预后情况[4-5]，本研究收集了78例慢性心力衰竭患者的临床资料，旨在探讨CysC和NT-proBNP水平与慢性心力衰竭患者疾病严重程度及预后的相关性。现报告如下。