LM185BYH-2.5

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PMIC, or a Power Management Integrated Circuit, is an electronic chip used in electronic circuitry to control and manage the power distribution of a device. Voltage reference is a type of PMIC which is used to maintain or reference a steady voltage level within a system. One example of such a reference is the LM185BYH-2.5. This article will discuss the application field and working principle of the LM185BYH-2.5.

First, the application field of the LM185BYH-2.5 will be discussed. The voltage reference is typically used in systems that require an accurate voltage reference for stability with varying temperatures, such as in programmable logic controllers and motor drives. Additionally, the LM185BYH-2.5 is also used in medical, telecommunications, and computing applications. In all of those cases, the device is usually used as a low-power voltage reference with a temperature coefficient of 20ppm/°C and an output voltage of 2.5V.

The second topic to be discussed is the working principle of the LM185BYH-2.5. The LM185BYH-2.5 is based on a band-gap voltage reference circuit, which uses a combination of an ion-implanted Zener diode and a bipolar transistors. The Zener diode is integrated on the chip and used to produce a stable reference voltage, and the bipolar transistors are used to modulate that voltage, compensating for changes in temperature and other environmental factors.

The output pin of the LM185BYH-2.5 is connected to the internal band-gap reference voltage by two series resistors. The ratio of the resistors forms a voltage divider, which generates the reference voltage. An additional resistor can be used in combination with one of the series resistors to modify the reference voltage.

The LM185BYH-2.5 also has an input for an external voltage which is used to further fine-tune the output reference voltage. The external voltage is amplified by the bipolar transistors and is subtracted from the internal reference voltage, resulting in an output reference voltage which is an exact multiple of the external voltage.

Lastly, the LM185BYH-2.5 also includes several protection features which can be used to reduce current consumption, minimize noise, and reduce load effects. A current limiting resistor can be placed between the output pin and ground. This resistor will limit the output current and reduce noise. Additionally, a Schottky diode can be connected between the output pin and ground to further reduce power consumption. The Schottky diode also helps to reduce load effects on the voltage reference.

To conclude, the LM185BYH-2.5 is a Voltage Reference type of PMIC which is used to maintain a steady voltage level in many different applications. Its output voltage is 2.5V with a temperature coefficient of 20ppm/°C. The reference voltage is generated by a band-gap voltage reference circuit, which uses resistors and bipolar transistors to compensate for temperature and other environmental issues. The device also features several protection features which can be used to reduce current consumption, minimize noise, and reduce load effects.

The specific data is subject to PDF, and the above content is for reference