LSJ507 Current Regulator Diode Linear Systems replaces discontinued Siliconix J507 The Linear Systems LSJ507 is a 20% range current regulator The LSJ507 is a 20% range current regulator designed for demanding applications in test equipment and instrumentation. The LSJ507 utilizes JFET techniques to produce a single two-leaded device which is extremely simple to operate. * * * * * * * * Two-Lead Plastic Package Guaranteed 20% Tolerance Operation up to 50V Excellent Temperature Stability Simple Series Circuitry, No Separate Voltage Source Tight Guaranteed Circuit Performance Excellent Performance in Low-Voltage/Battery Circuits and High-Voltage Spike Protection High Circuit Stability vs. Temperature. LSJ507 Applications: * * * FEATURES REPLACEMENT SECOND SOURCE FOR SILICONIX J507 WIDE CURRENT RANGE BIASING NOT REQUIRED ABSOLUTE MAXIMUM RATINGS 1 @ 25C (unless otherwise noted) Maximum Temperatures Storage Temperature Operating Junction Temperature Maximum Power Dissipation Continuous Power Dissipation @ 125C Maximum Currents Forward Current Reverse Current Maximum Voltages Peak Operating Voltage 1.80mA 20% VGS = 0V 55C to +150C 55C to +135C 360mW 20mA 50mA POV = 50V Constant-Current Supply Current-Limiting Timing Circuits ELECTRICAL CHARACTERISTICS @ 25C (unless otherwise noted) SYMBOL CHARACTERISTICS MIN. TYP. MAX. POV Peak Operating Voltage2 50 VR Reverse Voltage 0.8 CF Forward Capacitance 2.2 SPECIFIC ELECTRICAL CHARACTERISTICS @ 25C (unless otherwise noted) FORWARD CURRENT3 DYNAMIC IMPEDANCE4 PART IF Zd UNITS V V pF CONDITIONS IF = 1.1 IF(MAX) IR = 1mA VF = 25V, f = 1MHz Click To Buy LSJ507 MIN 1.44 VF = 25V NOM 1.80 VF = 25V MAX 2.16 MIN 0.20 TYP 1 KNEE IMPEDANCE ZK VF = 6V TYP 0.19 5 LIMITING VOLTAGE VL IF = 0.8 IF(MIN) TYP MAX 2.8 1.3 Notes: 1. Absolute Maximum ratings are limiting values above which serviceability may be impaired 2. Pulsed, t = 2ms. Maximum VF where IF < 1.1 IF(MAX) 3. Pulsed, t = 2ms. Continuous currents may vary. 4. Pulsed, t = 2ms. Continuous impedances may vary. 5. Min VF required to ensure IF = 0.8 IF(MIN) Available Packages: LSJ507 in TO-92 LSJ507 available as bare die Please contact Micross for full package and die dimensions: Email: chipcomponents@micross.com Web: www.micross.com/distribution.aspx Information furnished by Linear Integrated Systems and Micross Components is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Linear Integrated Systems.