RH033_Unit_3

UTC UR0033LINEAR INTEGRATED CIRCUITUTC UNISONIC TECHNOLOGIES CO., LTD.1QW-R102-023,A2 CHANNEL LOW-DROPOUT VOLTAGE REGULATORFEATURES*Dual Output: ADJ/1A, 3.3V/1A. *Output Voltage Precision of ±2%.*Output consists of PNP power transistor with low-dropout voltage.*Built-in over current protection circuit (OCP). *Built-in Thermal Shut Down Circuit (TSD). *Ideal for Hard Disk Drives applications.1: Vcc 2: ADJ 3: GND 4: V o1 5: V O2*Pb-free plating product number: UR0033LPIN DISCRIPTIONPIN NO.PIN NAMEFUNCTION1 Vcc Power Supply2 ADJ 1.25V3 GND Ground4 Vo 1 ADJ Output5 Vo 2 3.3V OutputUTC UR0033LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAMUTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R102-023,AUTC UR0033 LINEAR INTEGRATED CIRCUITUTC UNISONIC TECHNOLOGIES CO., LTD.3QW-R102-023,AABSOLUTE MAXIMUM RATINGS (T a =25℃)PARAMETER SYMBOL RATINGS UNITSupply Voltage Vcc 18 VPower dissipation P D 1000* mVOperating temperature range T opr -40 ~ +85°C Storage temperature range T stg -55 ~ +150°C Junction temperature T j 150°C * P D derated at 8mW/℃ for temperatures above T a =25℃OPERATING RATINGS (T a =25℃)PARAMETER SYMBOL MIN MAX UNITInput VoltageVcc 4.0 16.0 VADJ Output current Io 1 1 A 3.3V Output current Io 2 1 AELECTRICAL CHARACTERISTICS(Refer to the test circuit, T a =25℃, V CC =6V unless otherwise specified.) PARAMETER SYMBOLTEST CONDITIONS MIN TYP MAX UNITBias Current I B Io 1=0mA, Io 2=0mA 0.8 1.5 mAADJ OutputOutput Voltage 1 Vo 1 Io 1=500mA 1.225 1.25 1.275 VDropout Voltage 1 △V D1 Io 1=500mA 0.25 0.5 V Peak Output Current 1 Io 1 1.0 1.7 ARipple Rejection 1R.R.1f=120Hz, ein=1VrmsIo 1=200mA50 58 dB Line Regulation 1△V LINE1 Vcc=V O +1V ~ 16V, Io 1=500mA5 30 mVLoad Regulation 1 △V LOAD1 Io 1=0mA ~ 1A 30 75 mVTemperature Coefficient of OutputVoltage 1*T CVO1 Io 1=5mA, T J =0 ~ 125℃ ±0.01%/℃ Short circuit Output Current 1 I OS1 Vcc =16V 270 mA 3.3V OutputOutput Voltage 2 Vo 2 Io 2=500mA 3.234 3.30 3.366 V Peak Output Current 2 Io 2 1.0 1.7 A Ripple Rejection 2 R.R.2 f=120Hz, ein=1VrmsIo 2=200mA50 58 dBLine Regulation 2 △V LINE2 Vcc=4V ~ 16V, Io 1=500mA 5 30 mV Load Regulation 2 △V LOAD2 Io 2=0mA ~ 1A 30 75 mVTemperature Coefficient of OutputVoltage 2*T CVO2 Io 2=5mA, T J =0 ~ 125℃ ±0.01%/℃ Short circuit Output Current 2 I OS2 Vcc =16V 270 mA * Design Guarantee. (Outgoing inspection is not done on all products.) ○ This product is not designed for protection against radioactive rays.Note: All characteristic are measured with a capacity across the input (0.33μF) and the output (22μF).Measurement is done at T A ≒T J , and variations in the parameter of all measurement (except for Temperature Coefficient of Output Voltage)caused by temperature change are not considered.UTC UR0033LINEAR INTEGRATED CIRCUITUTC UNISONIC TECHNOLOGIES CO., LTD.4QW-R102-023,APOWER DISSIPATION12.5107.552.50255075100125150AMBIENT TEMPERATURE, T a (℃)P O W E R D I S S I P A T I O N , P D (W )STANDARD APPLICATION CIRCUITΩμFTEST CIRCUIT FOR EACH CONDITIONUTC UR0033 LINEAR INTEGRATED CIRCUITUTC UNISONIC TECHNOLOGIES CO., LTD.5QW-R102-023,ATEST CIRCUIT FOR RIPPLE REJECTION RATIOVAPPLICATION INFORMATIONOperation Supply Voltage RangeThe circuit functionality is guaranteed within operation of ambient temperature range, as long as it is within operation supply voltage range. The standard electrical characteristic values are guaranteed at the test circuit voltage of Vcc=V O +1V. The cannot be guaranteed at other voltages in the operating range of V O +1V ~ 16.0V, homever, the variation will be small.● Input /Output characteristicV OUT(Typ.T A =25℃)For proper regulation, this device must be operated in the Recommended Operating Region shown above.Power DissipationRefer to the thermal duration characteristics shown in Fig.3. Also, be sure to use this IC within a power dissipation rage allowing enough margins.Output and Bypass CapacitorTo prevent oscillations, place the output capacitor between the output pin and GND for both channel. There is a possibility for oscillation if capacitor 's value changes due to temperature, voltage, etc. More than 22μF electrolytic capacitor is recommended. If an extremely large value of (over 1000μF) is used, it may cause oscillations at low frequency. In case of using ceramic capacitor (it is recommended more than 10μF) connect with 1Ω resistance serially as ESR. For the bypass capacitor, a 0.33μF capacitor placed as close to Vcc pin and GND pin as possible is recommended.UTC UR0033LINEAR INTEGRATED CIRCUIT Over- current Protection CircuitThe over-current protection circuits are built in at the outputs. They protect the IC from being damaged when the load is short-circuited or subjected to an over current condition. This protection circuits perform holdback current limiting.Thermal Protection CircuitA thermal shut down circuit (T.S.D.) is built into the IC to prevent damage due to overheating, Therefore, all the outputs are turned off when the T.S.D. circuit is activated and are turned on when the temperature recedes to the specified level. However, the T.S.D. circuit is only for extreme conditions and the regulator circuit should still be designed for the IC not to exceed T J(max)=150℃.GroundingIt is recommended that every capacitor (bypass and output capacitors) is grounded to PIN3 using single-point connections.Electromagnetic FieldsThe IC is susceptible to strong electromagnetic fields and may cause malfunction. Therefore, caution should be used when placing it on the PCB.Protection DiodesIt is recommended that protection diodes be used when the output is connected to an inductive load.UTC UNISONIC TECHNOLOGIES CO., LTD. 6 QW-R102-023,A。

Step 4.Activity 1 Task 3 Write an introduction of about 100-120 words to a company you are interested in.(15mins)
Step 5.Review what the students have learned in this lecture and assign homework.(5mins)
With his experience in management, Tommy soon found a position in a big company.
With its high-quality products and good service, the company soon gained a good reputation.
2. Company background: location andheadquarters ,employees, rank, revenues, etc.
3. Products and services: key features of products and services the company offers.
教学方法与手段
用联想生成教学方法促进学生新旧知识的交融，以引导和仿写为主，注重师生互动，使用多媒体辅助教学F
教学基本内容
Section 3 Things to Write
教学过程：
Greetings before teaching.
lead-in activities:
Review what the students havelearnedin last lecture and check theassignments’answers. (5mins)

While You Listen
Listen to the passage carefully and fill in each of the blanks marked from 1) to 10) according to what you have heard.
The five substances are also known as the five treasures, including qi, jing, blood, shen and body fluids. Qi is the 7) ＿fun＿dam＿en＿tal＿ substance in the universe. Jing is a specialized form of qi that contains the blueprint for our life on earth. Blood is another specialized type of qi that 8) ＿n＿ou＿ris＿he＿s and moistens the cells. Shen is another very special form of qi which is the decision maker and resides in the heart. Body fluids are another specific form of qi which cool, moisten and lubricate the body. There are thin fluids called jin, such as tears and 9) ＿＿sw＿ea.tAnd there are thick fluids, like spinal or synovial fluid called ye.

干燥剂标准介绍(总6页)--本页仅作为文档封面，使用时请直接删除即可----内页可以根据需求调整合适字体及大小--干燥剂标准介绍1、药品食品干燥剂相关标准药品食品用干燥剂的标准主要是由国家食品药品监督管理局制定的药品包装容器(材料)标准：《药用固体纸袋装干燥剂标准》YBB00122005。

该标准规定了对“固体制剂滤纸袋包装的细孔球型硅胶干燥剂”的要求，其中除了对干燥剂袋外观、强度，吸附剂的含水率、吸湿率等干燥剂基本性能要求外，着重就干燥剂在有害物质含量（如：砷含量等），微生物限度，脱色性能等方面进行了规定。

威胜针对药用食品用干燥剂，专门制定了两种产品标准，分别为《小圆柱干燥剂产品标准》WS-QWS-824-55和《透明条连续式干燥剂产品标准》WS-QWS-824-56，这两种产品在满足YBB00122005的基础上，增加了吸湿速度要求、粉尘要求、交货方式等要求，另外有使产品更适合进行自动化分装的要求。

具体差异见下表：硅胶原料 含水率 ≤% ≤% ≤% WS 的产品要求含水率更低，更注重干燥剂低湿下的吸湿能力；小圆柱产品规定原料粒度是为了更好的控制产品粉尘。

粒度 —~4mm—吸湿率20%RH ，≥%；50%RH ，≥%；90%RH ，≥%； 20%RH ，≥%；50%RH ，≥%；20%RH ，≥%；50%RH ，≥%； 包材 荧光测试 不得含有 不得含有 — 由于透明条连续式干燥剂的包材以及小圆柱干燥剂的外壳均为塑料，其理化性能指标还参照了YBB00122002以及YBB00172004中的相关规定。

坤含量 ≤% — ≤% 铅含量 ≤% ≤% ≤% 脱色试验无色无色 无色溶剂残留量 ≤10mg/m2≤10mg/m2≤10mg/m2干燥剂袋 外观 干净整洁无破损 干净整洁无破损 干净整洁无破损吸湿速度要求的制定，能使干燥剂在快速恒定吸收水分、控制湿度方面有更好的表现。

牢度（抗跌性） 高跌落无破损 1m 高5次跌落无破损 1m 高5次跌落无破损粉尘 — 无粉尘 无粉尘 吸湿速度 —25度40%RH 下5小时≥% 25度60%RH 下1小时≥%且≤%微生物限度 符合药典要求 符合药典要求符合药典要求 交货要求 产品规格及包装数量—已规定已规定药用干燥剂的包装袋要求也要符合药包材规定注：1“—”代表没有此项要求2、DIN55473标准《包装辅助用品干燥剂袋交货技术条件》DIN5473标准是德国标准化协会针对袋装干燥剂制定的一个标准，标准中对袋装干燥剂的原料性能、包材性能、成品性能、包装袋（阻隔性包装）性能、产品标识等均作了明确的规定。