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SS8051T11TR Arkusz danych(PDF) 1 Page - Silicon Standard Corp. |
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SS8051T11TR Arkusz danych(HTML) 1 Page - Silicon Standard Corp. |
1 / 9 page www.SiliconStandard.com 1 of 9 SS8051 Rev.2.01 6/06/2003 Micro-Power Step-up DC/DC Converter FEATURES Configurable output voltage up to 28V Quiescent current of 20µA Shutdown current <1µA Shutdown-pin current <1µA Supply range from 2.5V to 6.5V Low VDS(on): 250mV (ISW=300mA) Tiny SOT23-5 package APPLICATIONS STN/TFT LCD Bias Personal Digital Assistants (PDAs) Handheld Computers Digital Still Cameras Cellular Phones WebPad White LED Driver Local 3V to 5V Conversion DESCRIPTION The SS8051 boost converter is designed for small to medium size LCD panels requiring high bias voltages. With a typical quiescent current of 20µA and a supply voltage range of 2.5V to 6.5V, it is suitable for battery powered portable applications, such as PDAs and handheld computers. When the SS8051 goes into shutdown mode, it consumes less than 1µA. Furthermore, with a 350mA current limit, 500ns fixed minimum off-time and tiny SOT23-5 package, the SS8051 can be used with smaller inductors and other surface-mount components to minimize the required PCB footprint in space-conscious applications. To control the SS8051, no other external current is needed for the shutdown pin, which typically consumes less than 1µA over the full supply range. TYPICAL APPLICATION CIRCUIT GND 1µF 4.7µF 10uH 2.5V – 4.2V 1M VCC SW SHDN FB GND SS8051 1µF 4.7µF 62k 20V 12mA |
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