KA336-2.5/B/KA236-2.5 PROGRAMMABLE SHUNT REGULATOR PROGRAMMABLE SHUNT REGULATOR TO-92 The KA336-2.5/B integrated Circuits are precision 2.5V shunt regulators. The monolithic IC voltage references operates as a low temperature coefficient 2.5V zener with 0.2 dynamic impedance. A third terminal on the KA336-2.5/B allow the reference voltage and temperature coefficient to be trimmed easily. KA3362.5/B are useful as a precision 2.5V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 2.5V make it convenient to obtain a stable reference from low voltage supplies. Further, since the KA336-2.5/B operate as shunt regulators, they can be used as either a positive or negative voltage reference. Î 1: ADJ, 2: +, 3: - FEATURES • Low temperature coefficient • Guaranteed temperature stability 4mV typical • 0.2 dynamic impedance • 1.0% initial tolerance available. • Easily trimmed for minimum temperature drift Î ORDERING INFORMATION Device KA336-2.5B KA236-2.5 SCHEMATIC DIAGRAM Package KA336-2.5 Operating Temperature & 0 ~ 70 TO-92 & - 25 ~ +85 KA336-2.5/B/KA236-2.5 PROGRAMMABLE SHUNT REGULATOR ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Value Unit IR IF 15 10 0 ~ + 70 - 25 ~ +85 mA mA Reverse Current Forward Current Operating Temperature Range KA336-2.5/B KA236-2.5 Storage Temperature Range ELECTRICAL CHARACTERISTICS Characteristic Symbol Reverse Breakdown Voltage VR ºV /ºI Reverse Breakdown Change with Current R Reverse Dynamic Impedance R Temperature Stability ST T Reverse Breakdown Change with Current ºV /ºI Reverse Dynamic Impedance ZD T STG R (T MIN < T A< T MAX, unless otherwise specified) Test Conditions & T = 25& 400âAI 10mA T = 25& T A = 25 IR = 1mA A & & ST & & KA236: T MIN = -25 , T MAX = 85 KA336: T MIN = 0 , T MAX = 70 KA336/236 KA336B IR = 1mA IR = 1mA T MIN T A T MAX T T T 400âAI 10mA I = 1mA T T T I = 1mA T T T MIN A MAX Typ Max Min Typ Max 2.44 2.49 2.54 2.465 2.49 2.515 V 2.6 6 2.6 10 mV 0.2 0.6 0.2 1 Î 1.8 6 1.8 6 mV 3 10 3 12 mV 0.4 1 0.4 1.4 Î R R A MAX A MAX R MIN Unit Min R MIN Long Term Stability & & & - 60 ~ + 150 A ZD R T OPR 20 20 ppm KA336-2.5/B/KA236-2.5 PROGRAMMABLE SHUNT REGULATOR TYPICAL PERFORMANCE CHARACTERISTICS Fig. 1. REVERSE VOLTAGE CHANGE REVERSE CURRENT (mA) Fig. 3 TEMPERATURE DRIFT Fig. 2 REVERSE CHARACTERISTICS REVERSE VOLTAGE(V) Fig. 4 FORWARD CHARACTERISTICS KA336-2.5/B/KA236-2.5 PROGRAMMABLE SHUNT REGULATOR