DS1811-5

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 supervisors are essential when it comes to monitoring current levels within an application or larger system. As such, their main purpose is to protect system components from high and low current levels. While the expected current will usually be within the normal range, there are times when the current level dealing within an application can suddenly surpass the expected range. In these cases, a PMIC supervisor such as the Maxim Integrated DS1811-5 comes into play. This Maxim Integrated device is a 5 pin low dropout (LDO) supervisor with power-on reset and watchdog functions.

Working Principle of the DS1811-5

The DS1811-5 is a current monolithic supervisor IC with an on-chip voltage reference. The voltage reference of the DS1811-5 is adjustable by a single external resistor and it is also factory-trimmed for improved accuracy. The DS1811-5 has two reset outputs that can be configured for active low, active high, active low-active high, or oscillator mode. In addition, the device also includes a power-on reset and a redetectable/optional open drain reset.

The two integrated comparators of the DS1811-5 can detect a voltage threshold in either the power-supply domain or in the microcontroller domain. This detection threshold is adjustable via an external resistor. These two comparators are used to detect low voltage and overvoltage conditions in the application, and to activate the reset pulses to protect the system.

General Application Field of the DS1811-5

The Maxim Integrated DS1812-5 LDO supervisor is generally used in various industrial applications including:

• Power over Ethernet (PoE) controllers
• Lighting control systems
• Instrumentation systems
• Telecom power supplies
• Factory automation systems
• Industrial motor control systems.

This device is also used in various consumer applications including:

• LCD TVs
• Set-top boxes
• Sporting goods
• Gaming systems
• White goods.

The DS1811-5 is also available in several industry standard packages such as SOT-23-5, SOP-8, and TSSOP-8. The device is also powered by low-cost, low-profile voltages such as +3.3 V, +2.5 V, and +3 V.

Conclusion

The Maxim Integrated DS1811-5 is a low dropout (LDO) supervisor IC that can be used for various applications, such as PoE controllers, lighting control systems, instrumentation systems, telecom power supplies, and white goods. The device has an adjustable voltage reference, and two adjustable comparators to detect low voltage and overvoltage conditions in the application. The various packages and low-profile voltages make the DS1811-5 a great choice for protection of system components from high and low current levels.

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