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S-1167B50-M5T1G Datasheet(PDF) 15 Page - Seiko Instruments Inc |
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S-1167B50-M5T1G Datasheet(HTML) 15 Page - Seiko Instruments Inc |
15 / 31 page ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.2.3_00 S-1167 Series Seiko Instruments Inc. 15 Precautions • Wiring patterns for the VIN pin, VOUT pin and GND pin should be designed so that the impedance is low. When mounting an output capacitor between the VOUT pin and VSS pin (CL) and a capacitor for stabilizing the input between VIN pin and VSS pin (CIN), the distance from the capacitors to these pins should be as short as possible. • Note that the output voltage may increase when a series regulator is used at low load current (10 µA or less). • Note that the output voltage may increase due to driver leakage when a series regulator is used at high temperatures. • Generally a series regulator may cause oscillation, depending on the selection of external parts. The following conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual usage conditions for selection, including evaluation of temperature characteristics. Input capacitor (CIN) : 1.0 µF or more Output capacitor (CL) : 1.0 µF or more Equivalent series resistance (RESR) : 1.0 Ω or less • The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitor is small or an input capacitor is not connected. • It is important to sufficiently evaluate the output voltage fluctuation due to the power supply fluctuation and load fluctuation characteristics in the actual equipment. • If the power supply suddenly increases sharply, a momentary overshoot may be output. It is therefore important to sufficiently evaluate the output voltage at power application in the actual equipment. • The application conditions for the input voltage, output voltage, and load current should not exceed the package power dissipation. • Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. • In determining the output current, attention should be paid to the output current value specified in Table 6 in the “ Electrical Characteristics ” and footnote *5 of the table. • SII claims no responsibility for any disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party. |
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