S-1142B86H-E6T2U

The S-1142B86H-E6T2U is an ultra-low current linear Voltage Regulator from the Power Management Integrated Circuit (PMIC) family. It provides effectively stabilized output voltages with an output current greater than zero. This device is specially designed for a variety of mobile applications including displays, mobile phones, tablets and other portable electronic devices, and is perfectly suitable for energy-saving or energy-protecting systems.

The device itself comprises a channel transistor, two series diodes, two resistors, two capacitors, a voltage reference generator and transistor drive, ammeters and all necessary protection devices. Its external components, that is, the main capacitor, the main inductor and external resistors and capacitors can be used to get the required output voltage value with variable range. The maximum output voltage that can be achieved is 8.5V.

The main function of the S-1142B86H-E6T2U is to maintain a constant output voltage over the input range of 4.5V to 8.5V. This is done by the control loop that compares the output voltage to the reference voltage generated by the transisor drive in the device. The internal error amplifier adjusts the bias current flowing through the channel transistor in order to maintain the voltage. When the input voltage exceeds the pair of threshold voltage limits, the device will automatically terminate the bias current, thereby switching off the device.

The S-1142B86H-E6T2U is also designed to withstand junction temperature of 125°C, thereby ensuring long-term reliability and robust operation. Moreover, the device is designed for maximum ripple reduction for very low output noise levels and power efficiency at low input voltages. It features low dropout voltage (≥400mV typical), low quiescent current (≥ 5µA typical) and high PSRR (≥19dB at 100kHz). Application-specific enhancements have also been added to this device including short-circuit protection and thermal/over-temperature protection.

To summarize, the S-1142B86H-E6T2U is an ultra-low current linear Voltage Regulator, specially designed for a variety of mobile applications. It is perfectly suitable for energy-saving or energy-protecting systems and the control loop maintains a constant output voltage over the input range. The device features excellent temperature-resisting capability, low dropout voltage, low quiescent current and high PSRR, as well as various protection features.