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TC1305 Datasheet(PDF) 1 Page - Microchip Technology |
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TC1305 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 18 page  © 2002 Microchip Technology Inc. DS21526A-page 1 Features • Extremely Low Supply Current for Longer Battery Life • Select Mode™ Operation: Selectable Output Voltages for High Design Flexibility • Very Low Dropout Voltage •29 µVRMS Typical Output Noise •10 µsec (Typ.) Wake-Up Time from SHDN • 150mA Output Current per Output • High Output Voltage Accuracy • Power-Saving Shutdown Mode • RESET Output Can Be Used as a Low Battery Detector or Processor Reset Generator • Over Current Protection and Over Temperature Shutdown • Space Saving 10-Pin MSOP Package Applications • Load Partitioning • Battery Operated Systems • Portable Computers • Medical Instruments • Instrumentation • Pagers and Cellular/PHS Phones • Linear Post-Regulator for SMPS Device Selection Table NOTE: “R” denotes the suffix for the 2.63V VDET threshold. “D” indicates VOUT1 =VOUT2 = 2.5, 2.8, 3.0 (selectable). Other output voltages are available. Please contact Microchip Technology Inc. for details. Package Type General Description The TC1305 combines two CMOS Low Dropout Regu- lators and a Microprocessor Monitor in a space saving 10-Pin MSOP package. Designed specifically for battery operated systems, total supply current is typically 120 µA at full load, 20 to 60 times lower than in bipolar regulators. The TC1305 features selectable output voltages for higher design flexibility. The tri-state SELECT input pin allows the user to select VOUT1 and VOUT2 from 3 different values (2.5V, 2.8V and 3.0V). An active low RESET is asserted when the detected voltage (VDET) falls below the 2.63V reset voltage threshold. The RESET output remains low for 300msec (typical)afterVDET rises above reset threshold. When the shutdown controls (SHDN1 and SHDN2)are low, the regulator output voltages fall to zero, RESET output remains valid and supply current is reduced to 20 µA (typ.) Other key features for the device include ultra low noise operation, fast response to step changes in load and very low dropout voltage (typically 150mV at full load). The device also incorporates both over temperature and over current protection. Each regulator is stable with an output capacitor of only 1 µF and has a maximum output current of 150mA. The TC1305 is featured in a 10-Pin MSOP package with selective output voltages. Typical Application Part Number Package Junction Temperature Range TC1305R-DVUN 10-Pin MSOP -40°C to +85°C VIN VOUT2 VOUT1 1 VDET Bypass GND SELECT 2 3 4 5 10 9 8 7 6 SHDN1 RESET TC1305 SHDN2 10-Pin MSOP TC1305 470pF (Optional) 3.3 µF 3.3 µF 1 2 3 4 5 10 9 8 7 6 VIN VDET GND SELECT SHDN1 VOUT2 VOUT1 Bypass RESET SHDN2 TC1305 Dual 150mA CMOS LDO With Select Mode™ Operation, Shutdown and Independent RESET Output |
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