 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Solved by TM SPX431LJ Low Voltage Adjustable Precision Shunt Regulator Features Wide Programmable Precise Output Voltage from 1.24V to 18V High Stability under Capacitive Load Low Temperature Deviation: 3mV Typical Low Equivalent Full-Range Temperature Coefficient: 20PPM/oC Typical Low Dynamic Output Resistance: 0.05 Typical High Sink Current Capacity from 55 A to 100 mA Low Output Noise Wide Operating Range of -40 to 125oC Available in RoHS Compliant, Lead Free Packaging M Package (SOT-) 2 3 REF ANODE CATHODE Applications Graphics Card PC Motherboard Voltage Adapter Switching Power Supply Charger General Description The SPX431LJ series ICs are low voltage three-terminal adjustable regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger, motherboard and other adjustable regulators. The output voltage can be set to any value between 1.24V and 18V with two external resistors. The SPX431LJ precision reference is offered in two bandgap tolerances: 0.5% and 1%. These ICs are available in TO-92 and SOT-89 packages. TO-2 SOT- Figure . Package Types of SPX43LJ Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation Pin Configuration N Package (TO-2) M Package (SOT-) 3 2 1 CATHODE ANODE REF 2 3 REF ANODE CATHODE Figure 2. Pin Configuration of SPX43LJ (Top View) Functional Block Diagram CATHODE REF + - VREF ANODE Figure 3. Functional Block Diagram of SPX43LJ Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation 2 Absolute Maximum Ratings (Note 1) Parameter Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Power Dissipation Storage Temperature Range Symbol VKA IKA IREF PD TSTG Value 20 -100 to 100 10 TO-92, SOT-89 Package -65 to 150 TO-92 Package Thermal Impedance QJA SOT-89 130 100 oC/W Unit V mA mA 770 mW oC Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only , and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Cathode Voltage Cathode Current Operating Ambient Temperature Range Symbol VKA IKA Min VREF 0.1 -40 Max 18 100 125 Unit V mA o C Electrical Characteristics (Typical and limits apply for TJ=25oC unless otherwise noted.) Parameter Reference Voltage 0.5% 1% Test Symbol Circuit 4 4 VREF VREF Conditions VKA=VREF, IKA=10mA VKA=VREF IKA=10mA 0oC to 70oC -40 C to 85 C o o Min 1.234 1.228 Typ 1.240 1.240 2 3 -0.5 Max 1.246 1.252 10 10 -1.5 Unit V mV mV/V A A A A Deviation of Reference Voltage Over-Temperature Ratio of Change in VREF to the Change in Cathode Voltage Reference Input Current Deviation of Reference Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic Impedance Date: 7/26/06 Rev C 5 5 5 4 6 4 VREF IKA=10mA, VKA VKA:VREF to 16V IREF IREF IKA (MIN) IKA (OFF) ZKA IKA=10mA, R1=10K , R2= IKA=10mA, R1=10K , R2= TA=-40 to 85oC 0.15 0.1 55 0.04 0.01 0.05 0.4 0.4 80 0.10 0.05 0.15 VKA=VREF VREF=0, VKA=18V VKA=6, VREF=0 VKA=VREF, IKA=1 to 100mA f 1.0kHz SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation 3 Electrical Characteristics (Continued) R VIN IKA VKA VREF Figure 4. Test Circuit 4 for VKA=VREF VIN R3 IKA VKA R IREF VKA=VREF(+R/R2)+ IREF . R R2 VREF Figure . Test Circuit for VKA>VREF VIN IOFF VKA Figure 6. Test Circuit 6 for IOFF Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation 4 Typical Performance Characteristics .242 .24 VKA=VREF IKA=0mA Reference Current ( A) 0. 0.7 0.6 0. 0.4 0.3 0.2 -0 Reference Voltage (V) .240 .23 .23 .237 .236 .23 -0 IKA=0mA R=0K R2= -2 0 2 0 7 o 00 2 0 -2 0 2 0 o 7 00 2 Ambient Temperature ( C) Ambient Temperature ( C) Figure 7. Reference Voltage vs. Ambient Temperature Figure . Reference Current vs. Ambient Temperature 0 400 00 VKA=VREF TA=2 C o 300 200 VKA=VREF TA=2 C o Cathode Current (mA) 0 Cathode Current ( A) 00 0 -00 -200 -300 0 -0 -00 -0 - 0 - 0 Cathode Voltage (V) Cathode Voltage (V) Figure . Cathode Current vs. Cathode Voltage Figure 0. Current vs. Cathode Voltage Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation Typical Performance Characteristics (Continued) Output 60 0 6.K IKA=0mA TA=2 C o I KA 360 Voltage Gain (dB) 0uF 40 30 20 0 0 00 4.3K V k 0k 00k 00K GND Small Signal Frequency (HZ) Figure . Small Signal Voltage Gain vs. Frequency 0 Output Impedance ( ) IKA = mA to 00mA 00 IKA 0 0. 0.0 k 0k 00k M GND Frequency (Hz) Figure 2. Dynamic Impedance vs. Frequency Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation 6 Typical Performance Characteristics (Continued) 3 Input and output voltage (V) Input Output R .K R2 0 2 Pulse Generator f=00KHz Output GND 0 - 0 2 3 4 6 Time ( S) Figure 3. Pulse Response of Input and Output Voltage -0.30 -0.3 Ratio of VREF to VKA (mV/V) IKA=0mA VKA=VREF to 6V. -0.40 -0.4 -0.0 -0. -40 -20 0 20 40 60 o 0 00 20 Ambient Temperature ( C) Figure 4. Ratio of Delta Reference Voltage to the Ratio of Cathode Voltage vs. Ambient Temperature Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation 7 Typical ApplicationS VIN R3 R V OUT VO=(+R/R2) VREF V REF R2 SPX43LJ Figure . Shunt Regulator VIN R R2 VREF VOUT R4 VO=(+R2/R3) VREF SPX43LJ R3 Figure 6. High Current Shunt Regulator VIN R2 IOUT R IOUT = VREF/R2 + IKA SPX43LJ Figure7. Current Source or Current Limit Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation Typical Application (Continued) VIN 2.V/A R2 20 SPX7 R .2K SPX43LJ R3 20 Figure. Precision 2.-V A Regulator C R2 60 R R COMP R3 R4 VOUT U2 3 C2 Q 2 PWM Controller VFB SPX 43LJ 4 PS2 Figure . PWM Converter with Reference Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation Package: 3 Pin TO-92 Mechanical Dimensions TO-92 Unit: mm (inch) Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation 0 Package: 3 Pin SOT-89 Mechanical Dimensions (Continued) SOT-89 Unit: mm(inch) .630(0.064) .30(0.072) .400(0.0)* 4.400(0.73) 4.600(0.) 0.000(0.000) 0.076(0.003) .400(0.0) .600(0.063) R0.200(0.00) 0.00(0.03) 3.0(0.6) 4.20(0.67) .200(0.047) 2.300(0.0) 2.600(0.02) 0 3 0.360(0.04) 0.40(0.0) 3.000(0.) 0.360(0.04) 0.40(0.0) 0.440(0.07) 0.60(0.022) 0.360(0.04) 0.440(0.07) 3 0 R0.0(0.006) Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation ORDeRing inFORMaTiOn SPX431LJ /TR: Tape and Reel Part Number Bandgap Tolerance A: 0.5% Blank: 1.0% C: 2.0% Blank: Tube or Bulk -L: Lead Free and RoHS Compliant Package N: TO-92 M1: SOT-89 Part Number Temperature Range -40C to +2C -40C to +2C -40C to +2C -40C to +2C Voltage Output Pin Package Packing Type Tolerance Voltage Count 0.% .0% 2.0% 0.% .0% 2.0% Adj Adj Adj Adj Adj Adj SOT- SOT- SOT- TO-2 TO-2 TO-2 3 3 3 3 3 3 ,000/TR ,000/TR ,000/TR 2,000/AMMO 2,000/AMMO 2,000/AMMO SPX43LJAM-L/TR -40C to +2C SPX43LJM-L/TR SPX43LJAN-L/TR SPX43LJN-L/TR SPX43LJCN-L/TR SPX43LJCM-L/TR -40C to +2C Solved by Sipex corporation TM Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 03 TEL: (40) 34-700 FAX: (40) 3-7600 Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Date: 7/26/06 Rev C SPX43LJ Low Voltage Adjustable Precision Shunt Regulator (c) 2006 Sipex Corporation 2 |
Price & Availability of SPX431LJCM1-LTR
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |