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UA78L05AID Arkusz danych(PDF) 11 Page - Texas Instruments |
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UA78L05AID Arkusz danych(HTML) 11 Page - Texas Instruments |
11 / 33 page INPUT OUTPUT COMMON UA78L00 0.1 F 0.33 F VI VO 1N4001 or Equivalent Copyright © 2016, Texas Instruments Incorporated INPUT OUTPUT COMMON UA78L00 0.1 F 0.33 F VI VO Copyright © 2016, Texas Instruments Incorporated 11 UA78L02A, UA78L05, UA78L05A, UA78L06A UA78L08A, UA78L09A, UA78L10A, UA78L12A, UA78L15A www.ti.com SLVS010V – JANUARY 1976 – REVISED NOVEMBER 2016 Product Folder Links: UA78L02A UA78L05 UA78L05A UA78L06A UA78L08A UA78L09A UA78L10A UA78L12A UA78L15A Submit Documentation Feedback Copyright © 1976–2016, Texas Instruments Incorporated 8 Applications and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information The UA78L00 devices are ideal for use as linear regulators with only a few external components needed. The UA78L00 devices can also be used to clean power supply noise by attenuating ripple on the input signal. 8.2 Typical Application The UA78L00 devices are typically used as fixed-output linear regulators, sourcing current up to 100 mA into a load. Figure 5. Fixed Output Regulator 8.2.1 Design Requirements The COMMON pin must be tied to ground to set the OUTPUT pin to the desired fixed output voltage. Although not required, a 0.33-µF bypass capacitor is recommended on the input, and a 0.1-µF bypass capacitor is recommend on the output. 8.2.2 Detailed Design Procedure Occasionally, the input voltage to the regulator can collapse faster than the output voltage. For example, this can occur when the input supply is crowbarred during an output overvoltage condition. If the output voltage is greater than approximately 7 V, the emitter-base junction of the series-pass element (internal or external) could break down and be damaged. To prevent this, a diode shunt can be employed as shown in Figure 6. Figure 6. Reverse-Bias-Protection Circuit |
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