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TC1306 Datasheet(PDF) 4 Page - Microchip Technology |
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TC1306 Datasheet(HTML) 4 Page - Microchip Technology |
4 / 16 page TC1306 DS21527B-page 4 © 2002 Microchip Technology Inc. 2.0 PIN DESCRIPTIONS Thedescriptionsof the pins arelistedinTable2-1. TABLE 2-1: PIN FUNCTION TABLE 3.0 DETAILED DESCRIPTION The TC1306 is a precision fixed output voltage regulator that contains two fully independent 150mA outputs. The device also features separate shutdown modes for low-power operation. The Select Mode™ operation allows the user to select VOUT2 from two different values (2.8V, 3.0V), therefore providing high design flexibility. VOUT1 supplies a fixed 1.8V output voltage. The CMOS construction of the TC1306 results in a very low supply current, which does not increase with load changes. In addition, VOUT remains stable and within regulation at no load currents. The TC1306 also features an integrated microproces- sor supervisor that monitors the VOUT2 output. The active low RESET signal is asserted when the voltage of VOUT2 falls below the reset voltage threshold (2.63V). The RESET output remains low for 300msec (typical)afterVOUT2 rises above the reset threshold. The RESET output of the TC1306 is optimized to reject fast transient glitches on the monitored output line. Pin No. (8-Pin MSOP) Symbol Description 1VIN Power supply input. 2 GND Ground terminal. 3 SELECT SELECT control for setting VOUT2.SELECT = Low for VOUT2 =2.8V, SELECT = High for VOUT2 =3.0V. 4 SHDN1 Shutdown control input for VOUT1. Regulator 1 is fully enabled when a logic high is applied to this input. Regulator 1 enters shutdown when a logic low is applied to this input. During shutdown, regulator output voltage falls to zero, RESET output remains valid. 5 SHDN2 Shutdown control input for VOUT2. Regulator 2 is fully enabled when a logic high is applied to this input. Regulator 2 enters shutdown when a logic low is applied to this input. During shutdown, regulator output voltage falls to zero, RESET output is low. 6VOUT1 Regulated voltage output 1. 7VOUT2 Regulated voltage output 2. 8 RESET RESET Output. RESET =Low when VOUT2 is below the Reset Threshold Voltage. RESET = HighwhenVOUT2 is above the Reset Threshold Voltage. |
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