TJ1051 Datasheet | HTC KOREA

FEATURES - CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROL - LOW VOLTAGE OPERATION - PRECISION INTERNAL PONENT COUNT - CURRENT SINK OUTPUT STAGE .. - EASY PENSATION - LOW AC MAINS VOLTAGE REJECTION SOT-23-6LD SOP-8 ORDERING INFORMATION Device Marking 1051 TJ1051 Package SOT-23-6LD SOP-8 TJ1051CL TJ1051CD DESCRIPTION TJ1051 is a highly integrated solution for SMPS applications requiring constant voltage and constant current mode. TJ1051 integrates one voltage reference, two operational amplifiers (with ORed ouputs - mon collectors), and a current sensing circuit. The voltage reference bined with one operational amplifiers makes it an ideal voltage controller, and the PIN CONNECTIONS (TOP VIEW) SOT-23-6 1 Vctrl Vcc SOP-8 6 5 4 1 2 3 Vctrl Vcc Vsense Gnd 8 Out 7 Ictrl 6 Nc 5 2 Gnd Vsense other low voltage reference bined with the other Ictrl 3 Out operational amplifier makes it an ideal current limiter for output low side current sensing. The current threshold is fixed and precise. The only external ponents are : - A resistor brideg to be connected to the output Block Diagram of the power supply (adaptor, battery charger) to set the voltage regulation by dividing the 1.210V desired output voltage to match the internal voltage reference value. - A sense resistor having a value and allowable dissipation power which need to be chosen according to the internal vlotage threshold. - Optional pensation ponents (R and C). 200m V 4 Nc Vcc Out Vctrl APPLICATIONS - BATTERY CHARGERS - ADAPTERS Gnd Ictrl Vsense TJ1051, is ideal for smallest package available, is ideal for space shrinked applications such as battery chargers and adaptors. Jan. 2007-Rev 1.0 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER FOR ADATPTORS AND BATTERY CHARGERS PIN DESCRIPTION SOT23-6 Pinout Name Vcc GND Vctrl .. Ictrl Out Vsense SOP-8 Pinout Name Vcc GND Vctrl Ictrl Out Vsense Nc Nc Pin# 2 8 1 6 7 3 5 4 Type Power Supply Power Supply Analog Input Analog Input Current Shink...