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TC1071VCT713 Datasheet(PDF) 9 Page - Microchip Technology |
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TC1071VCT713 Datasheet(HTML) 9 Page - Microchip Technology |
9 / 20 page © 2007 Microchip Technology Inc. DS21353D-page 9 TC1070/TC1071/TC1187 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE 3.1 Input Voltage Supply (VIN) Connect unregulated input supply to the VIN pin. If there is a large distance between the input supply and the LDO regulator, some input capacitance is necessary for proper operation. A 1 µF capacitor connected from VIN to ground is recommended for most applications. 3.2 Ground (GND) Connect the unregulated input supply ground return to GND. Also connect the negative side of the 1 µF typical input decoupling capacitor close to GND and the negative side of the output capacitor C1 to GND. 3.3 Shutdown Control Input (SHDN) The regulator is fully enabled when a logic high is applied to this input. The regulator enters shutdown when a logic low is applied to this input. During shutdown, output voltage falls to zero and supply cur- rent is reduced to 0.5 μA (maximum). 3.4 Output Voltage Adjust (ADJ) Output voltage setting is programmed with a resistor divider from VOUT to this input. A capacitor may also be added to this input to reduce output noise (see Section 4.2 “Output Capacitor”). 3.5 Regulated Voltage Output (Vout) Connect the output load to VOUT of the LDO. Also connect the positive side of the LDO output capacitor as close as possible to the VOUT pin. Pin No. (5-Pin SOT-23) Symbol Description 1VIN Unregulated supply input. 2 GND Ground terminal. 3SHDN Shutdown control input. 4 ADJ Output voltage adjust terminal. 5VOUT Regulated voltage output. |
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