SP3071EMN-L

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Type:	Transceiver
Protocol:	RS422, RS485
Number of Drivers/Receivers:	1/1
Duplex:	Full
Receiver Hysteresis:	100mV
Data Rate:	250kbps
Voltage - Supply:	3.3V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC

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SP3071EMN-L application field and working principle

The SP3071EMN-L is a high-speed single-charge pump voltage IC manufactured by Supertex, which is well-suited for current-mode constant voltage applications such as SMPS, LED lighting and industrial automation. It also features out-of-regulation and over-temperature protection. This paper will discuss the application fields and working principle of the SP3071EMN-L.

Application field

The SP3071EMN-L is designed for use in a variety of applications, including switching power supplies, LED lighting, active-clamp voltage controllers and industrial automation. Due to its low power consumption and high efficiency, the SP3071EMN-L is an ideal choice for products that require a high level of precision and accuracy, such as medical equipment and aerospace applications.

Working principle

The SP3071EMN-L is a single-charge pump voltage regulator IC with a current-mode control system. It provides a constant voltage output by transforming a low input voltage into a higher output voltage with a switching pulse. The pulse is generated by a charge pump circuit, which is controlled by an error amplifier placed within the IC. The error amplifier compares the input voltage to a reference voltage and then controls a low-side switch. When the low side switch is open, the charge pump circuit charges a capacitor in the output circuit, raising the output voltage. When the low-side switch closes, current is discharged from the capacitor, lowering the output voltage. This repetition of charging and discharging the capacitor results in a stable output voltage.The SP3071EMN-L also features out-of-regulation and over-temperature protection. The over-temperature protection circuit shuts down the IC if the temperature exceeds the maximum rating, protecting the IC from over-heating. The out-of-regulation protection circuit prevents excessive output voltages by shutting down the IC if the output exceeds the specified maximum value.

Conclusion

The SP3071EMN-L is a high-speed, single-charge pump voltage IC manufactured by Supertex with various application fields, such as SMPS, LED lighting and industrial automation, and with a current-mode control system, which makes it suitable for precision applications. It also features a variety of protection features, including out-of-regulation and over-temperature protection, which increases its reliability and safety in operation.

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