 | Author | Message | < Digital Electronic ~ TPS77218DGKRG4 TPS77227DGKR TPS77227DGKRG4 PDF AND DATASHEET | | elwen | | Posted: Thu Aug 07, 2008 1:24 am Post subject: TPS77218DGKRG4 TPS77227DGKR TPS77227DGKRG4 PDF AND DATASHEET | | | | Joined: 26 Jun 2008 Posts: 49 | TPS77218DGKRG4 TPS77227DGKR TPS77227DGKRG4 PDF AND DATASHEET:
http://www.chinaicmart.com/series-TPS/TPS77218DGKRG4.html
Description
The TPS771xx and TPS772xx are low-dropout regulators with integrated power-on reset and power good (PG) function respectively. These devices are capable of supplying 150 mA of output current with a dropout of 115 mV (TPS77133, TPS77233). Quiescent current is 92 μA at full load dropping down to 1 μA when device is disabled. These devices are optimized to be stable with a wide range of output capacitors including low ESR ceramic (10μF) or low capacitance (1μF) tantalum capacitors. These devices have extremely low noise output performance (55 μVrms) without using any added filter capacitors. TPS771xx and TPS772xx are designed to have fast transient response for larger load current changes.
The TPS771xx or TPS772xx is offered in 1.5 V,1.8-V, 2.7-V, 2.8-V, 3.3-V, and 5.0 V fixed-voltage versions and in an adjustable version (programmable over
the range of 1.5 V to 5.5 V). Output voltage tolerance is 2% over line, load, and temperature ranges. TheTPS771xx and TPS772xx families are available in 8-pin MSOP (DGK) packages.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 115 mV at an output current of 150 mA for 3.3 volt option) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 92 μA over the full range of output current, 0 mA to 150 mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. | |
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