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Features
Fixed 4.9V ± 2% Output
VIN Range: 2.7V to 4.5V
Output Current: Up to 110mA（VIN≥3V） Up to 230mA（VIN≥3.6V）
Low Noise Constant Frequency (360kHz)Operation
Shutdown Current <1A
No Inductors
Available in Low Profile 6-Lead SOT23PackageApplications White LED Backlighting Li-Ion Battery Backup Supplies Smart Card ReadersDescriptionThe HE9119A is a low noise switchedcapacitor voltage doubler. It produce aregulated output voltage from a 2.7V to 4.5Vinput. Low external parts count (one flyingcapacitor and two small bypass capacitors atVIN and VOUT) make the HE9119A ideallysuited for small, battery-powered applications.The HE9119A have thermal shutdowcapability and can survive a continuous shortcircuit from VOUT to GND. A low currentshutdown feature disconnects the load from VINand reduces quiescent current to <1uA.The HE9119A is available in the indu

Featuresl Maximum output current is 1Al Range of operation input voltage: Max 12Vl Line regulation: 0.1%/V (typ.)l Standby current: 2mA (typ.)l Load regulation: 10mV (typ.)l Environment Temperature: -20 C~85 CApplicationsl Power Management for Computer MotherBoard, Graphic Cardl LCD Monitor and LCD TVl DVD Decode Boardl ADSL Modeml Post Regulators For Switching Supplies

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Features Low power consumption Low voltage drop Low temperature coefficient Ultra low quiescent current: 2μA(typ.) High input voltage (up to 18V) Maximum output current: 250mA Output voltage accuracy: tolerance ±2% TO92, SOT89 ,SOT23-3 and SOT23 package

Features Input voltage: 3V~20V Output range: 2.5V~5.0V Outputcurrent:250mA(Within Max PowerDissipation) Quiescent current: 2μA Typ. Dropout voltage: 200mV @VOUT=3.3V,IOUT=100mA Good line regulation: 0.01% Good load regulation:5mV@1mA≤Io≤50mA Low temperature coefficient: 0.07mV/℃Applications Battery-powered equipment Voltage regulator for microprocessor Voltage regulator for LAN cards Wireless communication equipment Audio/Video equipment

Features Low voltage drop: 0.17V@100mA High input voltage: 15V Low temperature coefficient Large Output Current: >0.35A Low Quiescent Current: 1.0uA Output voltage accuracy: tolerance ±2% Built-in current limiter SOT89 and SOT23-3 packageApplications Battery-powered equipment Hand-Hold Equipment GRS Receivers Wireless LAN

Features Output Current of 500mA Thermal Overload Protection Short Circuit Protection Output transistor safe area protection No external components Package：TO252 Output voltage accuracy: tolerance ±5%

Features Maximum output current is 1.1A Range of operation input voltage: Max 30V Line regulation: 0.03%/V (typ.) Standby current: 1.8mA (typ.) Load regulation: 0.2%/A (typ.) Environment Temperature: -20℃~85℃Applications Power Management for Computer MotherBoard, Graphic Card LCD Monitor and LCD TV DVD Decode Board ADSL Modem Post Regulators For Switching Supplies

20V/85mΩ@-4.5V P-Channel MOSFETFeatures VDS(max)=-20V ID(max)=-3.3A RDS(ON) =85mΩ(max)@VGS = -4.5V RDS(ON) =120mΩ(max)@VGS = -2.5V Improved dv/dt capability Green Device Available Fast switching

Features Protection of battery cell reverse connection Programmable charge current up to 1.1A No MOSFET sense resistor or blocking dioderequired Complete linear Charger for single Cell Lithium-IonBatteries CC and CV operation with thermal regulation tomaximize Rate without risk of overheating Preset 4.2V charge voltage with ±1% accuracy Automatic Recharge Two Status Indication for Charge status, no batteryand battery failure indicators C/10 charge termination 55μ A supply current in shutdown 2.9V trickle current charge threshold Soft-Start limits inrush current Battery Temperature Sensing Available in SOP-8 and ESOP-8 package

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Features Protection of battery cell reverse connection Programmable charge current up to 800mA No MOSFET sense resistor or blocking dioderequired Complete linear Charger for single CellLithium-Ion Batteries CC and CV operation with thermal regulationto maximize Rate without risk of overheating Preset 4.2V charge voltage with ±1%accuracy Automatic Recharge C/10 charge termination 2.9V trickle current charge threshold Soft-Start limits inrush current Available in SOT23-5 package

Features Output Current of 100mA Thermal Overload Protection Short Circuit Protection Output transistor safe area protection No external components Package：SOT89-3 and TO92 Output voltage accuracy: tolerance ±3%

Features Hall effect Switch Sensor Wide operating voltagerange :3.5V~35V Open Collector Pre-Driver Maximum output sink current: 50mA Operating Temperature:-40℃~+125℃ Package：SOT23-3L N-pole inductionApplications Rotor Position Sensing Current Switch Brush-less DC Motor Revolution counting Encoder RPM Detection Brush-less DC Fan Speed measurement

Features External parts: Coil, capacitor Output voltage: Settable to between2.1V to 5.5V in 0.1V steps Maximum Oscillationfrequency :300KHz Accuracy of ±2% High efficiency :95% Package: SOT23 and TO92Applications Digital cameras Electronic notebooks and PDAS Portable CD/MD players Cameras , video equipment Communications equipment Power supply for microcomputers

Features Low power consumption Low voltage drop Low temperature coefficient High input voltage (up to 18V) Output voltage accuracy: tolerance ±2% SOT89, SOT23 packageApplications Battery-powered equipment Communication equipment Audio/Video equipment

Features Low power consumption Low voltage drop Low temperature coefficient Ultra low quiescent current: 2μA(typ.) High input voltage (up to 15V) Maximum output current: 250mA Output voltage accuracy: tolerance ±2% TO92, SOT89 ,SOT23-3 and SOT23 package

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1 水利部关于加强事中事后监管规范生产建设 项目水土保持设施自主验收的通知 （水保〔2017〕365 号） 各流域机构，各省、自治区、直辖市水利（水务）厅（局）， 各计划单列市水利（水务）局，新疆生产建设兵团水利局，

题 1、电子报刊设计 课 型 新授课 教学目标 1、掌握艺术字、文字分栏、图文混排等的制作方法。 2、锻炼学生利用已有素材进行综合设计的能力。 3、培养学生保护环境的意识和责任。 教学重点 掌握艺术字、文字分栏、图文混排等的制作方法。