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UR13318-TN5-R Datasheet(PDF) 5 Page - Unisonic Technologies |
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UR13318-TN5-R Datasheet(HTML) 5 Page - Unisonic Technologies |
5 / 6 page UR13318 LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 5 of 6 www.unisonic.com.tw QW-R102-018.D APPLICATION INFORMATION Operation Supply Voltage Range The 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=5V. The cannot be guaranteed at other voltages in the operating range of 3.0V~16.0V, however, the variation will be small. ● Input /Output characteristic Dropout Region Regulation Region Recommended Operating Region Off Region VOUT 2V 3V (Typ.TA=25℃) Vin For proper regulation, this device must be operated in the Recommended Operating Region shown above. Power Dissipation Refer 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 Capacitor To 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. Over- current Protection Circuit The 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 Circuit A 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 TJ(max)=150 . ℃ Grounding It is recommended that every capacitor (bypass and output capacitors) is grounded to PIN3 using single-point connections. Electromagnetic Fields The IC is susceptible to strong electromagnetic fields and may cause malfunction. Therefore, caution should be used when placing it on the PCB. Protection Diodes It is recommended that protection diodes be used when the output is connected to an inductive load. |
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