www.fairchildsemi.com KA33V Voltage Stabilizer Features Description • Low Temperature Coefficient • Low Dynamic Resistance • Typical Reference Voltage of 33V 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 Symbol Value Unit Zener Current IZ 10 mA Power Dissipation (TA = 75°C) PD 200 mW Operating Ambient Temperature Range TOPR -20 ~ 75 °C Storage Temperature Range TSTG -40 ~ 125 °C Electrical Characteristics (TA = 25°°C) Parameter Stabilized Voltage Stabilized Voltage-Temperature Drift Dynamic Resistance 2 Symbol VZ ∆VZ/∆T RZ Conditions Min. Typ. Max. Unit 35 V IZ = 5mA 31 IZ = 5mA TA = -20 to 75°C -1 0 1 mV/°C IZ = 5mA, f = 1KHz - 10 25 - KA33V Measuring Circuits IZ = 5mA A ● 2 RB v KA33V Volt Meter EB 1 Figure 1. Measuring Circuit for Stabilized Voltage VZ Iz ● A ● ● IAC = + Iz 10 ● 50μ F 100 RB 2 VV2 C 0.1μ F KA33V VV1 ~ f = 1KHz EB 1 ● ● ● Fig. 3 IZ Vz rZ = 0 5mA VV1 1 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 KA33V Vi 15KΩ 1 15KΩ 15KΩ c ● ● c ● ● ● ＊ t o t u n in g d io d e s ( v a r a c t o r ) in c a s e o f Y c h o n 1) UHF Tuner ● ● ● ● ● TR1 ● ● ● ● ● ● D5 A n te n n a D1 D3 D2 ● ● TR2 D4 ● ● TR 1 : R F A M P : K SC 1393 K S C 1 0 7 0 ( U n d e r d e v e lo p m e n t) TR 2 : O SC : S KC 1730 D 1 - D 4 : 1 S 2 2 0 D 5 : M IX E R : 1 S S 1 6 AFC te r m in a l 2) VHF Tuner ● ● ● ● ● A n te n n a D1 TR 1 ● ● ● ● D3 D2 ● ● ● D4 TR 2 ● ● ● TR 1 : R M AM P : KSC 1393 T R 2 : M IX E R : K S C 1 39 4 TR3 : OSC : KSC 1730 A F C te rm in a l D 1, D 4 : 1S 2209 D 2, D 3 : 1S 2207 4 L o w /H ig h C h a n n e l S w itc h in g te rm in a l. TR 3 KA33V Power-temperature Derating Durve Typical Characteristic Curves (TA = 25°C) Figure7. Allowable Dissipation vs. Amblent Temperature Figure9. Stabilized Voltage Temperature Drift vs. Zener Current Figure8. Dynamic Resistance vs. Zener Current Figure10. Stabilized Voliage Variation vs. Time Figure11. Stabilized Voltage Variation & Supply Voltage Variation vs. Zener Current 5 KA33V Mechanical Dimensions Package Dimensions in millimeters TO-92 6 KA33V Ordering Information Product Number Package KA33V TO-92 Operating Temperature 7 KA33V DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 9/25/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation