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TC1017-4.0VCT 데이터시트(PDF) 9 Page - Microchip Technology |
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TC1017-4.0VCT 데이터시트(HTML) 9 Page - Microchip Technology |
9 / 22 page © 2005 Microchip Technology Inc. DS21813D-page 9 TC1017 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE 3.1 Shutdown Control Input (SHDN) The regulator is fully enabled when a logic-high is applied to SHDN. The regulator enters shutdown when a logic-low is applied to this input. During shutdown, the output voltage falls to zero and the supply current is reduced to 0.05 µA (typ.) 3.2 Ground Terminal For best performance, it is recommended that the ground pin be tied to a ground plane. 3.3 Regulated Voltage Output (VOUT) Bypass the regulated voltage output to GND with a minimum capacitance of 1 µF. A ceramic bypass capacitor is recommended for best performance. 3.4 Unregulated Supply Input (VIN) The minimum VIN has to meet two conditions in order to ensure that the output maintains regulation: VIN ≥ 2.7V and VIN ≥ [(VR + 2.5%) + VDROPOUT]. The maximum VIN should be less than or equal to 6V. Power dissipation may limit VIN to a lower potential in order to maintain a junction temperature below 125°C. Refer to Section 5.0 “Thermal Considerations”, for determining junction temperature. It is recommended that VIN be bypassed to GND with a ceramic capacitor. Pin No. 5-Pin SC-70 Pin No. 5-Pin SOT-23 5-Pin SC-70R Symbol Description 13 SHDN Shutdown Control Input 24 NC No Connect 32 GND Ground Terminal 45 VOUT Regulated Voltage Output 51 VIN Unregulated Supply Input |
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