SP433

SP433 Constant Voltage and Constant Current Controller DESCRIPTION The SP433 is high-voltage four-terminal adjustable voltage references, with over current protection feature. The SP433 is a one chip solution to a 2.5V precision voltage reference and constant current output in the application of secondary feedback control of power supply, DC/DC converter, adaptor and charger. SP433 is idea for low cost switching power supply application. APPLICATIONS z Battery Charger z Battery Power Equipment z Linear Regulators z Switch Power Supply z Cellular Phone z Digital Cameras z Computer Disk Drivers z Instrumentation FEATURES z Voltage Reference Accuracy of 0.5% & 1.0% z Sink Current Capability from 1mA to 100mA z Adjustable Output Voltage from VREF to 18V z Low Output Noise z Typical Output Dynamic Impedance Less Than 200mΩ z Available in SOT-23-5L and TO-94 package z Over Current Protection PIN CONFIGURATION TO-94 SOT-23-5L PART MARKING TO-94 SOT-23-5L 2009/03/16 Ver.1 Page 1 SP433 Constant Voltage and Constant Current Controller TYPICAL APPLCATION CIRCUIT PIN DESCRIPTION ( TO-94 ) Pin 1 2 3 4 PIN DESCRIPTION ( SOT-23-5L ) Pin 1 2 3 4 5 Symbol P NC ANODE REF CATHODE Description CURRENT ENABLE NC ANODE REF CATHODE Symbol R A C P Description REF ANODE CATHODE CURRENT ENABLE ORDERING INFORMATION Part Number Voltage Tolerance Package SP433AS25RGB 0.5% SOT-23-5L SP433BS25RGB 1.0% SOT-23-5L SP433AT94AGB 0.5% TO-94 SP433BT94AGB 1.0% TO-94 ※ Week Code : A ~ Z ( 1 ~ 26 ) ; a ~ z ...