KA33V

www.fairchildsemi.com KA33V Voltage Stabilizer Features Low Temperature Coefficient Low Dynamic Resistance Typical Reference Voltage of 33V Description The KA33V is a monolithic integrated voltage stabilizer especially designed as voltage supplier for electronic tuners. TO-92 1 1. Anode 2. Cathode Schematic Diagram ● ● ● 2 C a th o d e R4 D1 D2 D3 D4 D5 ● Q3 R3 ● ● Q2 R2 R1 1 Anode Rev. 1.0.1 ©2001 Fairchild Semiconductor Corporation KA33V Absolute Maximum Ratings (TA= 25°C) Parameter Zener Current Power Dissipation (TA = 75°C) Operating Ambient Temperature Range Storage Temperature Range Symbol IZ PD TOPR TSTG Value 10 200 -20 ~ 75 -40 ~ 125 Unit mA mW °C °C Electrical Characteristics (TA = 25°C) Parameter Stabilized Voltage Stabilized Voltage-Temperature Drift Dynamic Resistance Symbol VZ ∆VZ/∆T RZ Conditions IZ = 5mA IZ = 5mA TA = -20 to 75°C IZ = 5mA, f = 1KHz Min. 31 -1 0 10 Typ. Max. 35 1 25 Unit V mV/°C - 2 KA33V Measuring Circuits IZ = 5mA A ● RB 2 KA33V EB 1 v Volt Meter Figure 1. Measuring Circuit for Stabilized Voltage VZ Iz A ● ● ● + 50μ F IAC = ● Iz 10 100 RB 2 VV2 C 0.1μ F KA33V VV1 ~ f = 1KHz EB 1 ● ● ● Fig. 3 IZ Vz rZ = VV1 1 0.5mA 0 5mA 0.5mA 5mA W1 Figure 2. Measuring Circuit for Dynamic Resistance 3 KA33V Typical Application Ach ● ● ● Bch ● Ych ● Zch Ri 2 C C hannel s e ttin g v a r ia b l e r e s is t o r 15KΩ 15KΩ 15KΩ KA33V Vi 1 c ● ● ● ● ● c ＊ t o t u n in g d io d e s ( v a r a c t ...