WS336-5.0 Programmable Shunt Regulator Features Description • • • • • The WS336-5.0 integrated Circuits are precision 5.0V shunt regulators. The monolithic IC voltage references operates as a low temperature coeffcient 5.0V zener with 0.6ohm dynamic impedance. A third terminal on the WS336-5.0 allow the reference voltage and temperature coefficent to be trimmed easily. WS336-5.0 are useful as a precision 5.0V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 5.0V make it convenient to obtain a stable reference from low voltage supplies. Further, since the WS336-5.0 operate as shunt regulators, they can be used as either a positive or negative voltage reference. Low temperature coefficient Guaranteed temperature stability 0.6Ω dynamic impedance ±1.0% initial tolerance available Easily trimmed for minimum temperature drift .. Adjustable 4V to 6V .. Wide operating range current of 400mA to 10mA . Fast turn on TO-92 1 1.V-,2.V+,3.Adj Product Number WS336Z-5.0 Package Operating Temperature o TO-92 0 C ~ o 70 C Internal Block Diagram Rev. 1 WS336-5.0 Absolute Maximum Ratings Parameter Symbol Value Unit Reverse Current IR 15 mA Forward Current IF 10 mA Operating Temperature Range KA336-2.5/B TOPR 0 ~ + 70 °C Storage Temperature Range TSTG - 60 ~ + 150 °C Electrical Characteristics (0°C < TA < +70°C, unless otherwise specified) Parameter Symbol Reverse Breakdown Voltage VR Reverse Breakdown Change with Current ∆VR/∆IR Reverse Dynamic Impedance ZD Temperature Stability STT Reverse Breakdown Change with Current ∆VR/∆IR Reverse Dynamic Impedance ZD Long Term Stability In reference voltage ST Conditions TA = +25°C IR = 1mA WS336-5.0 Min. Typ. 4.85 5.0 5.15 TA = +25°C 600uA ≤IR ≤ 10mA - 6 TA = +25°C IR = 1mA - 0.6 - 4 IR = 1mA 400uA ≤ IR ≤10mA IR = 1mA IR = 1mA 2 Max. 20 2 Min. Typ. Max. Unit V m V Ω 12 mV 24 mV Ω - 6 - 0.8 2.5 - 20 - ppm/Khr WS336-5.0 Typical Perfomance Characteristics Figure 1. Reverse Voltage Change Figure 2. Reverse Characteristics Figure 3. Temperature Drift Figure 4. Forward Characteristics 3