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PMIC - Voltage Regulators - Linear

AS78L05MTR-E1 Application Field and Working Principle

AS78L05MTR-E1 is a 3-terminal low-dropout (LDO) linear positive voltage regulator with a maximum input voltage of 16V. It enables the device to provide a low-noise, low-voltage supply with fast transient responses. The linear regulator also includes a main output, an auxiliary or power good output, a current limit, and thermal shutdown protection.

Application Field

AS78L05MTR-E1 linear regulators provide an efficient and cost-effective solution for many 3-terminal voltage regulator applications, such as:

• Audio applications
• Process control
• Portable appliances
• Memory backup
• Adaptors
• Telecommunication
• Cellular phones
• Pagers

Working Principle

The AS78L05MTR-E1 linear voltage regulator is a low-dropout regulator with an output voltage of 5V. It requires a smaller input-to-output voltage differential than conventional 3-terminal regulators, thereby facilitating low-noise operation. The output voltage is accurately regulated with a maximum deviation of 1 percent.

The AS78L05MTR-E1 linear regulator includes a main output, an auxiliary or power good output, current limit, and thermal shutdown protection. This enables the linear regulator to provide a stable, low-noise, low-voltage supply with quick transient response. In addition, the linear regulator\'s output is monitored by the power good output, which provides an indication when the main output is within 10 percent of the nominal voltage.

The AS78L05MTR-E1 linear regulator also features a maximum output current of 100 mA, a 380 mV typical dropout voltage, and a maximum input voltage of 16V. The device utilizes an external resistor to set the output voltage, as well as protect against short-circuit, overloads, and over-temperature conditions. The AS78L05MTR-E1 also includes a peak current limit protection feature that limits the maximum output current after the initial inrush.

Conclusion

The AS78L05MTR-E1 linear regulator is a cost-effective solution for a wide range of applications. Its low-dropout input-to-output differential and fast transient response allow the device to provide a stable and low-noise output voltage. The linear regulator also includes a main output, an auxiliary or power good output, current limit protection, and thermal shutdown protection.

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