LM385BPWE4-2-5

The LM385BPWE4-2-5 is a popular voltage reference integrated circuit (IC) manufactured by Texas Instruments. It is a type of PMIC-Voltage Reference that is used to generate a fixed reference voltage of 2.5V. This fixed reference voltage is used in power management and signal conditioning designs where a consistent voltage source is required. It has a wide range of applications in the automotive, medical and industrial sectors.

The LM385BPWE4-2-5 is designed to provide a robust, reliable and stable voltage reference with high accuracy. It operates with a typical input voltage range of 1.5V to 6V, and can provide a fixed reference voltage over the -40°C to 125°C temperature range. Its un-reversed output voltage can be adjusted in 0.5% increments, to provide an accurate voltage reference with minimal variation over temperature and time.

The LM385BPWE4-2-5 also has integrated protection features such as reverse battery protection, overtemperature protection, current limit protection and overload protection, which make it suitable for use in tough, demanding environments. It also has a very low power consumption and is capable of operating without an external capacitor, making it an attractive choice for space constrained designs.

The basic working principle of the LM385BPWE4-2-5 is based on the LM385’s bandgap reference design. This design works by using two currents to generate a precision voltage reference. A temperature stable current is generated using a bandgap reference, and is combined with an error current which is generated by a complementary mismatched arrangement of transistors. The combination of these two currents results in a highly accurate reference voltage that is independent of temperature, age and process-related variations.

The bandgap reference design used in the LM385BPWE4-2-5 is also very efficient in terms of power consumption, and is capable of providing a stable voltage reference at low operating input voltages. This makes it suitable for use in mobile platforms, where low-power operation and a robust voltage source are critical.

In summary, the LM385BPWE4-2-5 is a highly accurate and stable voltage reference type of PMIC-Voltage Reference. It is designed to operate over a wide temperature range, and has integrated protection features making it suitable for use in demanding environments. It is also low-power and efficient, and offers high-precision output, making it an attractive choice for many applications.