The CS8120 is a 5V, 300mA precision linear regulator with two microprocessor compatible control functions and protection circuitry included on chip. It features over voltage shutdown, RESET comparator, error amplifier, enable comparator, bandgap supply, output current limit, bandgap reference, thermal shutdown, load dump, and more.
The CS8120 is a 5V, 300mA precision linear regulator designed with microprocessor-compatible control functions, specifically RESET and ENABLE. It features a composite NPN-PNP output pass transistor to ensure a low dropout voltage of 1V at 150mA without requiring excessive supply current.
The device includes on-chip protection circuitry for short circuits, overvoltage, and thermal runaway. It optimizes supply rejection by switching the internal bandgap reference from the supply input to the regulator output once the nominal voltage is achieved. The regulator offers low quiescent current (2.5mA) and a low current sleep mode drawing only 250uA.
| Output Current | 300mA |
|---|---|
| Dropout Voltage | 1.0V |
| Thermal Shutdown | 150°C to 190°C |
| Overvoltage Shutdown | 26V to 40V |
The typical dropout voltage is 1.0V when the output current is 200mA.
The output shuts down to protect the internal circuitry from unexpected voltage transients.