NTE999

Features:

 Equivalent FullRange Temperature Coefficient:  30ppm/°C Typ
Adjustable Output Voltage
Fast TurnOn Response
Sink Current Capability:  1mA to 100mA
Low Dynamic Output Impedance:  0.2Ω Typ
Low Output Noise Voltage


Specifications

Cathode Voltage (Note 1), V_KA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37V
Continuous Cathode Current Range, I_K  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA to 150mA
Reference Input Current Range, I_ref  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50µA to 10mA
Continuous Power Dissipation, P_D
                Up to +25°C  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . 775mW
                Derate Above +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . .  6.2mW/°C
Operating Ambient Temperature Range, T_opr. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  0° to +70°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65° to +150°C 
Lead Soldering Temperature (.0625 (1.6mm) from case for 10s), T_L . . . . . . . . . .  .  .. . . . . . . . . . . 260°C


Description

The NTE999 is a threeterminal adjustable shunt regulator with guaranteed thermal stability over a temperature range of 0° to +70°C.  The output voltage may be set to any value between Vref (approxi-mately 2.5V) and 36V with two external resistors.  This NTE999 has a typical dynamic output imped-ance of 0.2Ω.  Active output circuitry provides a very sharp turnon characteristic, making the NTE999 an excellent replacement for zener diodes in many applications.