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TC572502ECT 数据表(PDF) 1 Page - Microchip Technology |
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TC572502ECT 数据表(HTML) 1 Page - Microchip Technology |
1 / 16 page © 2002 Microchip Technology Inc. DS21437B-page 1 TC57 Features • Low Dropout Voltage: 100mV @ 650mA with FZT749 PNP Transistor • 2.7V to 8V Supply Range • Low Operating Current: 50 µA Operating, 0.2 µA Shutdown • Low True Chip Enable • Output Accuracy < ±2% • Small Package: 5-Pin SOT-23A Applications • Battery Operated Systems • Portable Instruments • High-Efficiency Linear Regulator • Post-Regulator for SMPS • Power Supply or Battery Back-Up Supply for Memory Device Selection Table Other output voltages and package options are available. Please contact Microchip Technology Inc. for details. Package Type General Description The TC57 is a low dropout regulator controller that operates with an external PNP pass transistor, allowing the user to tailor the LDO characteristics to suit the application at hand. This results in lower dropout operation (and often lower cost) compared with traditional linear regulators with on-board pass transistors. The maximum output current of a TC57- based regulator circuit is limited only by the characteristics of the external pass transistor. For example, a maximum output current of 650mA (with a dropout voltage of 100mV) results when an FZT749 pass transistor is used, while a Darlington configuration can deliver up to 4A. Flexibility, and superior performance make this family of regulator controllers the ideal choice in applications where low dropout voltage and low installed cost are key. Functional Block Diagram Part Number Output Voltage Package Temperature Range TC572502ECT 2.5V 5-Pin SOT-23A -40°C to +85°C TC573002ECT 3.0V 5-Pin SOT-23A -40°C to +85°C TC573302ECT 3.3V 5-Pin SOT-23A -40°C to +85°C SHDN 5 5-Pin SOT-23A TC57 13 4 EXT 2 VIN VOUT GND NOTE: 5-Pin SOT-23A is equivalent to the EIAJ SC-74A. TC573002ECT VOUT GND SHDN VIN EXT CIN 10µF (Tantalum) FZT749 Q1 RB 1K CL 10 µF (Tantalum) RL VIN +3.3V RBE 47K 1 2 ON OFF 3 4 5 VOUT +3V 3.3V Line Input, 3.0V, 500mA Output LDO Line Regulator Controller |
类似零件编号 - TC572502ECT |
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类似说明 - TC572502ECT |
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