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TSM105 Datasheet(PDF) 1 Page - STMicroelectronics |
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TSM105 Datasheet(HTML) 1 Page - STMicroelectronics |
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1/9 s CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROL s LOW VOLTAGE OPERATION s PRECISION INTERNAL VOLTAGE REFER- ENCE s LOW EXTERNAL COMPONENT COUNT s CURRENT SINK OUTPUT STAGE s EASY COMPENSATION s LOW AC MAINS VOLTAGE REJECTION DESCRIPTION TSM105 is a highly integrated solution for SMPS applications requiring CV (constant voltage) and CC (constant current) mode. TSM105 integrates one voltage reference, two operational amplifiers (with ORed outputs - com- mon collectors), and a current sensing circuit. The voltage reference combined with one opera- tional amplifier makes it an ideal voltage control- ler, and the other low voltage reference combined with the other operational amplifier makes it an ideal current limiter for output low side current sensing. The current threshold is fixed, and precise. The only external components are: * a resistor bridge to be connected on the output of the power supply (adapter, battery charger) to set the voltage regulation by dividing the desired out- put voltage to match the internal voltage reference value. * a sense resistor whose value and allowable dis- sipation power need to be chosen according to the internal voltage threshold. * optional compensation components (R and C). TSM105, housed in one of the smallest package available, is ideal for space shrinked applications such as adapters and battery chargers. APPLICATIONS s ADAPTERS s BATTERY CHARGERS ORDER CODE L = Tiny Package (SOT23-5) - only available in Tape & Reel (LT) D = Small Outline Package (SO) - also available in Tape & Reel (DT) PIN CONNECTIONS (top view) Part Number Temperature Range Package Marking LD TSM105CLT 0 to 85°C • M105 TSM105CD 0 to 85°C • TSM105 L SOT23-5 (Plastic Package) D SO8 (Plastic Micropackage) 1 2 34 5 Vctrl Gnd Vcc Ictrl Out 1 2 3 45 6 Vctrl Gnd Vcc Nc Out Ictrl Nc Nc SOT23-5 SO8 7 8 September 2001 TSM105 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR BATTERY CHARGERS AND ADAPTORS |
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