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TC562502ECT Datasheet(PDF) 3 Page - Microchip Technology |
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TC562502ECT Datasheet(HTML) 3 Page - Microchip Technology |
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3 / 16 page  2002 Microchip Technology Inc. DS21436B-page 3 TC56 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 TC56 is a precision, fixed output LDO. Unlike bipolar regulations, the TC56 supply current does not increase with load current. 3.1 Output Capacitor A 10 µF tantalum capacitor from VOUT to ground is recommended. The output capacitor should have an effective series resistance greater than 0.1 Ω and less than 5.0 Ω, and a resonant frequency above 1MHz. It is recommended that a 4.7 µF capacitor be connected from VIN to GND. When operating from sources other than batteries, supply noise rejection and transient response can be improved by increasing the value of the input and output capacitors and employing passive filtering techniques. 3.2 Shutdown Input The TC56 enters a low power shutdown mode when the shutdown control input (SHDN) is low. During shutdown, the regulator is disabled and supply current is reduced to 0.1 µA (max). Normal operation is restored when SHDN is driven high. If not required, the SHDN input can be tied to VIN. Pin No. (5-Pin SOT-23A) Symbol Description 1VSS Ground. 2VIN Supply voltage input. 3SHDN Shutdown input. 4 (NC) No connection. 5VOUT Regulated voltage output. |
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