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TC59 Fiches technique(PDF) 3 Page - Microchip Technology |
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TC59 Fiches technique(HTML) 3 Page - Microchip Technology |
3 / 20 page 2001-2012 Microchip Technology Inc. DS21438C-page 3 TC59 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE 3.0 DETAILED DESCRIPTION The TC59 is a low quiescent current, precision fixed negative output voltage LDO. Unlike bipolar linear regulators, the TC59 supply current does not increase proportionally with load current. 3.1 Output Capacitor A minimum of 1 F tantalum output capacitor is required. The requirements for the output capacitor are an equivalent series resistance (esr) greater than 0.1 and less than 5 , with a self-resonant frequency greater than 1MHz. To improve supply noise rejection and transient response, larger output capacitors can be used. Care should be taken when increasing COUT, that the input impedance is not high enough to cause high input impedance oscillation. 3.2 Input Capacitor A 1 F input capacitor is recommended for most applications when the input impedance is on the order of 10 . When operating off of a battery input, or there is a large distance from the input source to the LDO, larger input capacitance may be required for stability. When large values of output capacitance are used, the input capacitance should be increased to prevent high source impedance oscillations. Pin No. (3-Pin SOT-23A) Symbol Description 1VOUT Regulated voltage output. 2VIN Supply voltage input. 3VSS Ground. |
Numéro de pièce similaire - TC59_13 |
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Description similaire - TC59_13 |
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