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TC2054 Datasheet(PDF) 1 Page - Microchip Technology |
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TC2054 Datasheet(HTML) 1 Page - Microchip Technology |
1 / 16 page © 2002 Microchip Technology Inc. DS21663B-page 1 Features • Very Low Supply Current (55µA Typ.) for Longer Battery Life • Very Low Dropout Voltage: 140mV (Typ.) @ 150mA • High Output Voltage Accuracy: ±0.4% (Typ) • Standard or Custom Output Voltages • Power-Saving Shutdown Mode • ERROR Output Can Be Used as a Low Battery Detector or Processor Reset Generator • Fast Shutdown Reponse Time: 60 µsec (Typ) • Over-Current Protection • Space-Saving 5-Pin SOT-23A Package • Pin Compatible Upgrades for Bipolar Regulators Applications • Battery Operated Systems • Portable Computers • Medical Instruments • Instrumentation • Cellular / GSMS / PHS Phones • Pagers Device Selection Table Package Type General Description The TC2054, TC2055 and TC2186 are high accuracy (typically ±0.4%) CMOS upgrades for older (bipolar) low dropout regulators. Designed specifically for bat- tery-operated systems, the devices’ total supply current is typically 55 µA at full load (20 to 60 times lower than in bipolar regulators). The devices’ key features include ultra low noise oper- ation, very low dropout voltage - typically 45mV (TC2054); 90mV (TC2055); and 140mV (TC2186) at full load - and fast response to step changes in load. An error output (ERROR) is asserted when the devices are out-of-regulation (due to a low input voltage or exces- sive output current). Supply current is reduced to 0.5 µA (max) and both VOUT and ERROR are disabled when the shutdown input is low. The devices also incorporate over-current protection. The TC2054, TC2055 and TC2186 are stable with a low esr ceramic output capacitor of 1 µF and have a maximum output current of 50mA, 100mA and 150mA, respectively. This LDO Family also features a fast response time (60 µsec typically) when released from shutdown. Typical Application Part Number Package Junction Temp. Range TC2054-xxVCT 5-Pin SOT-23A* -40°C to +125°C TC2055-xxVCT 5-Pin SOT-23A* -40°C to +125°C TC2186-xxVCT 5-Pin SOT-23A* -40°C to +125°C Note: *5-Pin SOT-23A is equivalent to EIAJ (SC-74A). TC2054 TC2055 TC2186 5-Pin SOT-23A* TOP VIEW 2 SHDN ERROR GND VOUT VIN 4 5 3 1 1µF Shutdown Control (from Power Control Logic) TC2054 TC2055 TC2186 VIN 1 2 34 5 VIN VOUT ERROR SHDN GND 1M VOUT ERROR 1µF TC2054/2055/2186 50mA, 100mA, and 150mA CMOS LDOs with Shutdown and Error Output |
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Similar Description - TC2054 |
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