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AMS1085S-5.0 Datasheet(PDF) 6 Page - Advanced Monolithic Systems Ltd |
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AMS1085S-5.0 Datasheet(HTML) 6 Page - Advanced Monolithic Systems Ltd |
6 / 11 page PIN DESCRIPTION 1 GND/ADJ --/O Ground/ADJ 2 VOUT O Output voltage 3 VIN I Input supply voltage Pin No. Pin name I/O Functions FUNCTION DESCRIPTION The AMS1085 is a LDO regulator, its pass transistor is made up of a single NPN transistor being driven by a PNP. The dropout voltage is defined as: VDROP = VBE+ VSAT. The AMS1085 has two versions: the fixed output version and the adjustable output version. Output voltages can be 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V.On-chip thermal shut-down circuit provides protection against overload and overheating that would create excessive junction temperature. The adjustable output version requires a 22 μF or bigger tantalum capacitor at output for AMS1085 stability. The capacitor for fixed output version can be smaller and should be determined base on actual application. Generally, the stability of linear regulator stability decreases with output currents increase. PIN CONFIGURATION TO-263-2L TO-220-3L TO-263-3L TO-252-2L 1 2 3 1 2 3 1 2 3 1 2 3 AMS1085 6 Advanced Monolithic Systems http://www.ams-semitech.com |
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