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MC3392T データシート(PDF) 6 Page - Motorola, Inc |
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MC3392T データシート(HTML) 6 Page - Motorola, Inc |
6 / 12 page MC3392 6 MOTOROLA ANALOG IC DEVICE DATA Figure 11. Turn–On Waveform Figure 12. Turn–Off Waveform Figure 13. Output Current versus Supply Voltage Figure 14. Maximum Load Inductance versus Output Current 0 1020 30405060 +VS, SUPPLY VOLTAGE (V) 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 IO, OUTPUT CURRENT (A) 760 mA 14 V 4.0 V 1.0 V IO Vout IO Vout Vin 1.5 1.25 1.0 0.75 0.5 0.25 0 0.5 0.4 0.3 0.2 0.1 0 Vin = 4.0 V RL = 0 TA = 25°C No Heatsink Infinite Heatsink Safe Operating Region External Clamp Needed Emax = 60 mJ +VS = 14 V RL = 17 Ω TA = 25°C +VS = 14 V RL = 17 Ω TA = 25°C TECHNICAL DISCUSSION Introduction The MC3392 is a low side protected switch incorporating many features making it ideal for use in harsh automotive applications. The protection circuitry of the MC3392 protects not only itself but also the associated load from destructive voltage transients attributed to load and field dump, as well as reverse and double battery conditions found in automotive applications. The MC3392 is unique in that the protection circuitry is internal and does not require additional external protection components for its operation. This makes the device very cost effective because its application utilizes few external components, thus reducing cost and space requirements needed for the system. The MC3392 is extremely effective when used to drive solenoids, as well as incandescent lamp loads. The following description of the device’s operation is in reference to the functional blocks of the Representative Block Diagram shown in Figure 1. CMOS Input The input of the MC3392 is CMOS compatible. Input control performs as true logic. When the input (Vin) is less than 1.0 V the MC3392 switch is in a high impedance or OFF state. When Vin is greater than 4.0 V, is in a low impedance or ON state. The switching threshold of the input is approximately 2.0 V and is graphed in Figure 7. With the input at 4.0 V, the input sink current will be approximately 250 µA. In the ON state, the internal protection circuitry is activated and all of the protection features are available for use. In the OFF state, however, it is important to note that none of the protection features are available, with the exception of the internal inductive load clamp. The input pin is afforded a minimum of 2000 V ESD protection (Human Body Model) by virtue of the 7.2 V zener diode. |
同様の部品番号 - MC3392T |
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同様の説明 - MC3392T |
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