SP433BS25RGB

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 Battery Charger Battery Power Equipment Linear Regulators Switch Power Supply Cellular Phone Digital Cameras Computer Disk Drivers Instrumentation FEATURES Voltage Reference Accuracy of 0.5% & 1.0% Sink Current Capability from 1mA to 100mA Adjustable Output Voltage from VREF to 18V Low Output Noise Typical Output Dynamic Impedance Less Than 200mΩ Available in SOT-23-5L and TO-94 package 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 ( 27 ~ 52 ) ※ SP433AS25RGB : Tape Reel ; Pb – Free ; Halogen -Free ※ SP433BS25RGB : Tape Reel ; Pb – Free ; Halogen -Free ※ SP433AT94AGB : Tape Ammo ; Pb-Free ; Halogen -Free ※ SP433BT94AGB : Tape Ammo ; Pb-Free ; Halogen -Free Part Marking 33AYW 33BYW SP433 SP433 2009/03/16 Ver.1 Page 2 SP433 Constant Voltage and Constant Current Controller BLOCK DIAGRAM ABSOULTE MAXIMUM RATINGS (TA=25℃ Unless otherwise specified) Parameter Cathode Voltage Continuous Cathode Current Range Reference Current Range Operating Junction Temperature Range Storage Temperature Range Lead Temperature Range (Soldering 10Sec) Thermal Resistance Symbol VZ IZ IREF TJ TSTG TSOL ӨJA Value 18 150 10 -40 ~ +150 -65 ~ +150 260 140 Unit V mA mA ℃ ℃ ℃ ℃/W The IC has a protection circuit against static electricity. Do not apply high static electricity or high voltage that exceeds the performance of the protection circuit to the IC. 2009/03/16 Ver.1 Page 3 SP433 Constant Voltage and Constant Current Controller ELECTRICAL CHARACTERISTICS (TA=25℃ , Unless otherwise specified) Parameter Reference Input Voltage (IK=10mA,VZ=VREF) VREF Temp Deviation Ratio Of Change In REF To Change In Cathode Voltage Reference Input Current IREF Temp Deviation Off-State Cathode Current Dynamic Output Impedance Minimum Operating Current Current Amplification Saturation Voltage Maximum Protection Current Symbol VREF VDEV △VREF/ △VZ IREF IREF(DEV) IZ(OFF) RZ Iz(MIN) Iamp Vsat IP Conditions SP433A SP433B TA=-40℃~+80℃ VZ=VREF IZ=10mA IZ=10mA, △VZ = 18V~VREF IZ=10mA R1=10KΩ R2=∞ TA=-40℃~+80℃ R1=10KΩ , R2=∞ IZ=10mA VREF=0V , VZ=18V f