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L6221 Datasheet(PDF) 1 Page - STMicroelectronics |
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L6221 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 22 page  March 2009 Rev 4 1/22 22 L6221 Quad Darlington switch Features ■ Four non-inverting inputs with enable ■ Output voltage up to 50 V ■ Output current up to 1.8 A ■ Very low saturation voltage ■ TTL compatible inputs ■ Integral fast recirculation diodes Applications The L6221 monolithic quad Darlington switch is designed for high current, high voltage switching applications. Description Each of the four switches is controlled by a logic input and all four are controlled by a common enable input. All inputs are TTL-compatible for direct connection to logic circuits. Each switch consists of an open-collector Darlington transistor plus a fast diode for switching applications with inductive device loads. The emitters of the four switches are commoned. Any number of inputs and outputs of the same device may be paralleled. Figure 1. Block diagram Table 1. Device summary Order code Package E-L6221AS Power DIP E-L6221AD SO16+2+2 E-L6221AD013TR SO16+2+2 (tape and reel) E-L6221C/CD/CN Obsolete product Power DIP 12+2+2 SO16+2+2 www.st.com |
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