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ML63271ATR Datasheet(PDF) 3 Page - Minilogic Device Corporation Limited |
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ML63271ATR Datasheet(HTML) 3 Page - Minilogic Device Corporation Limited |
3 / 5 page 3/5 ML63 v Application Notes Note on Use 1. It is recommended to use capacitor with a capacity of 10uF or more for good frequency characteristics, otherwise it will lead to high output ripple. Tantalum type capacitor is recommended. As there may be the case where a spike-shaped high voltage is generated by the inductor when Lx transistor is turned off, the operating voltage of capacitor should be at least three times of the output set voltage so as to avoid over-voltage damage. 2. It is recommended to use inductor has sufficiently small d.c. resistance, large allowable current and hardly reaches magnetic saturation. When the inductance of inductor is small, there may be the case that the inductor current exceeds the absolute maximum ratings at the maximum load condition. 3. It is recommended to place external components as close as possible to the DC/CD converter so as to minimize the interconnection parasitic between components and DC/DC converter, especially for the capacitor connected to VOUT pin. It is recommended to place 0.1uF ceramic capacitor between VOUT pin and VSS pin. 4. It is recommended to provide sufficient grounding for VSS pin. This will help to stable the zero level within DC/DC converter induced by the switching current level variation during operation. And the insufficient grounding may result in unstable operation of DC/DC converter. v Pin Configuration SOT-89 : Pin Number Pin Name Description 1 VSS Ground 2 VOUT Voltage Output/Internal power supply 3 Lx Switch TO-92 : Pin Number Pin Name Description 1 VSS Ground 2 VOUT Voltage Output/Internal power supply 3 Lx Switch |
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