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TC1302B bảng dữ liệu(PDF) 10 Page - Microchip Technology |
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TC1302B bảng dữ liệu(HTML) 10 Page - Microchip Technology |
10 / 26 page TC1302A/B DS21333B-page 10 © 2005 Microchip Technology Inc. 3.0 TC1302A PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: TC1302A PIN FUNCTION TABLE 3.1 Regulated Output Voltage #1 (VOUT1) Connect VOUT1 to the positive side of the VOUT1 capacitor and load. Capable of 300 mA maximum output current. VOUT1 output is available when VIN is available; there is no pin to turn it OFF. See TC1302B if ON/OFF control of VOUT1 is desired. 3.2 Circuit Ground Pin (GND) Connect GND to the negative side of the input and output capacitor. Only the LDO internal circuitry bias current flows out of this pin (200 µA maximum). 3.3 Reference Bypass Input By connecting an external 10 nF capacitor (typical) to the Bypass Input, both outputs (VOUT1 and VOUT2) will have less noise and improved Power Supply Ripple Rejection (PSRR) performance. The LDO output voltage start-up time will increase with the addition of an external bypass capacitor. By leaving this pin unconnected, the start-up time will be minimized. 3.4 Output Voltage #2 Shutdown (SHDN2) ON/OFF control is performed by connecting SHDN2 to its proper level. When the input of this pin is connected to a voltage less than 15% of VIN, VOUT2 will be OFF. If this pin is connected to a voltage that is greater than 45% of VIN, VOUT2 will be turned ON. 3.5 Regulated Output Voltage #2 (VOUT2) Connect VOUT2 to the positive side of the VOUT2 capacitor and load. This pin is capable of a maximum output current of 150 mA. VOUT2 can be turned ON and OFF using SHDN2. 3.6 Unregulated Input Voltage Pin (VIN) Connect the unregulated input voltage source to VIN. If the input voltage source is located more than several inches away or is a battery, a typical input capacitance of 1 µF to 4.7 µF is recommended. Pin No. Name Function 1 NC No connect. 2VOUT1 Regulated output voltage #1, capable of 300 mA. 3 GND Circuit ground pin. 4 Bypass Internal reference bypass pin. A 10 nF external capacitor can be used to further reduce output noise and improve PSRR performance. 5 SHDN2 Output #2 shutdown control input. 6VOUT2 Regulated output voltage #2, capable of 150 mA. 7VIN Unregulated input voltage pin. 8 NC No connect. |
Số phần tương tự - TC1302B |
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Mô tả tương tự - TC1302B |
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