S-1142DF0I-E6T1U

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S-1142DF0I-E6T1U, from Sanken Electric, is a high power 4-pin voltage regulator. It is a monolithic integrated circuit which is capable of providing linear adjustable output voltage between 1.2 V and 3.6 V with an output current of up to 4 A. As a PMIC – Voltage Regulator – Linear, it can replace linear regulators like LM317, LDO, etc. and provide a better performance. The S-1142DF0I-E6T1U is mainly used in power applications like motor driving, lighting, and mobile device power supply circuit.

The S-1142DF0I-E6T1U features a remarkably low drop-out voltage, typically 0.2 V at 4 A, which makes the most efficient use of power, and has a wide operating temperature range from -20°C to +85°C. The regulatory circuit has an input voltage range of 4.5 V to 24 V and an output voltage range of 1.2 V to 3.6 V. It also includes an overtemperature protection circuit and an overvoltage protection circuit. It has a max quiescent current of 40 uA and also includes a pin for output overvoltage protection and an adjustable type short-circuit Protection.

Regarding the working principle of the S-1142DF0I-E6T1U voltage regulator, it uses a two resistor voltage divider between the output and the FB pin to set the regulator’s output voltage. The output voltage is determined by the ratio of R1 and R2. A voltage reference is included in the circuit which is set to the nominal 1.2 V to 3.6 V range. The voltage on the FB pin is compared to the voltage reference and the difference is amplified. The amplified difference drives the pass device inside the regulator, making it adjust the output voltage.

It is an ideal choice for applications that require high current voltage regulation, such as driving motors, lighting, and mobile device power supplies. Its high accuracy and low power consumption, make the S-1142DF0I-E6T1U the perfect option for designs that need precision voltage regulation, while still offering the best performance and reliability.

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