TS432 Adjustable Precision Shunt Regulator SOT-23 TO-92 Pin Definition: Pin Definition: 1. Reference 1. Reference 2. Anode 2. Cathode 3. Anode 3. Cathode General Description TS432 series is a three-terminal adjustable shunt regulator with specified thermal stability. The output voltage may be set to any value between V (approximately 1.24V) and 18V with two external resistors. TS432 series REF has a typical output impedance of 0.05. Active output circuitry provides a very sharp turn-on characteristic, making TS432 series excellent replacement for zener diode in many applications. Features Ordering Information Precision Reference Voltage Part No. Package Packing TS432A 1.24V1% TS432xCX RFG SOT-23 3,000pcs / 7 Reel TS432B 1.24V0.5% TS432xCT B0G TO-92 1,000pcs / Bulk Minimum Cathode Current for Regulation: 20A(typ.) TS432xCT A3G TO-92 2,000pcs / Ammo Equivalent Full Range Temp. Coefficient: 50ppm/ C Note: Where x denotes voltage tolerance Programmable Output Voltage up to 18V A: 1%, B: 0.5% Fast Turn-On Response G denotes for Halogen free products Sink Current Capability of 80A to 100mA Low Dynamic Output Impedance: 0.05 Low Output Noise Halogen Free Available Applications Block Diagram Voltage Monitor Delay Timer Constant Current Source/Sink High-Current Shunt Regulator Crow Bar Over-Voltage / Under-Voltage Protection o Absolute Maximum Ratings (T =25 C unless otherwise noted) A Parameter Symbol Limit Unit Cathode Voltage (Note 1) V 18 V KA Continuous Cathode Current Range I 100 mA K Reference Input Current Range I 3 mA REF Power Dissipation P 0.35 W D o Junction Temperature T +150 C J o Operation Temperature Range T 0 ~ +70 C OPER o Storage Temperature Range T -65 ~ +150 C STG Note 1: Voltage values are with respect to the anode terminal unless otherwise noted. Document Number: DS P0000238 1 Version: F15 TS432 Adjustable Precision Shunt Regulator Recommended Operating Condition Parameter Symbol Limit Unit (Note 1) Cathode Voltage V 16 V KA Continuous Cathode Current Range I 100 mA K o Electrical Characteristics (T =25 C unless otherwise noted) A Parameter Symbol Test Conditions Min Typ Max Unit TS432A V =V , I =10mA 1.227 1.252 KA REF K Reference voltage V 1.240 V REF (Figure 1) TS432B 1.233 1.246 Deviation of reference input V =V , I =10mA KA REF K V -- 10 25 mV REF voltage T = full range (Figure 1) A Radio of change in Vref to I =10mA, V = 16V to V KA KA REF V /V -- -1.0 -2.7 mV/V REF KA change in cathode Voltage (Figure 2) R1=10K, R2= , I =10mA KA Reference Input current I -- 0.25 0.5 A REF T = full range (Figure 2) A Deviation of reference input R1=10K, R2= , I =10mA KA I -- 0.04 0.8 A REF current, over temp. T = full range (Figure 2) A V =0V (Figure 3), REF Off-state Cathode Current I (off) -- 0.125 0.5 A KA V =16V KA f<1KHz, V =V KA REF Dynamic Output Impedance Z -- 0.2 0.4 KA I =1mA to 100mA (Figure 1) KA Minimum Operating Cathode I V =V (Figure 1) -- 20 80 A KA(MIN) KA REF Current * The deviation parameters V and I are defined as difference between the maximum value and minimum REF REF value Obtained over the full operating ambient temperature range that applied. * The average temperature coefficient of the reference input voltage, V is defined as: REF Where: T2-T1 = full temperature change. V can be positive or negative depending on whether V Min. or V Max occurs at the lower ambient REF REF REF temperature. Example: V =7.2mV and the slope is positive, V =1.241V at 25C, T=125C REF REF * The dynamic impedance ZKA is defined as: * When the device operating with two external resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance of the circuit is given by: Document Number: DS P0000238 2 Version: F15