KA78M08TU vs LM340T-5.0/NOPB、UA7805CKCS Compare

KA78M08TU Product overview

Linear Voltage Regulator IC Positive Fixed 1 Output 500mA TO-220-3

LM340T-5.0/NOPB Product overview

The LM340T-5.0/NOPB is a 3-terminal Positive Regulator employs internal current-limiting, thermal shutdown and safe-area compensation, making essentially indestructible. If adequate heat sinking is provided, this regulator can deliver over 1A output current. This regulator is intended as fixed voltage regulator of 5V in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, this device can be used with external components to obtain adjustable output voltages and currents. Considerable effort was expended to make the regulator easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

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Internal thermal overload protection

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Internal short-circuit current limit

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Output transistor safe area protection

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P+ Product enhancement tested

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Cap free ceramic output capacitor

UA7805CKCS Product overview

The UA7805CKCS is a fixed voltage regulator capable of delivering up to 1.5A of output current. The internal current-limiting and thermal-shutdown features of this regulator essentially make it immune to overload. This device can also be used with external components to obtain adjustable voltage and currents.

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Output current up to 1.5A

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Internal Thermal-Overload Protection

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High Power-Dissipation Capability

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Internal Short-Circuit Current Limiting

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Output Transistor Safe-Area Compensation