LM2595SX-5.0/NOPB

PMIC - Voltage Regulators - DC DC Switching Regulators

LM2595SX-5.0/NOPB is a voltage converting integrated circuit (IC) manufactured by Texas Instruments and is a member of the Switching Voltage Regulator family. It is capable of outputting five volts of DC power from an input of up to 35 volts DC, making it a popular choice for regulating higher input power sources. Its very low-power consumption capability allows it to be used in a variety of applications, from applications where space and power are major design considerations to applications where high power efficiency is critical. In addition, its wide operating temperature range and high reliability ratings make it suitable for a diverse range of applications.

Application Fields

The LM2595SX-5.0/NOPB is suitable for a range of applications, including:

• Solar cell power converters
• Battery operated systems or devices
• Inverters and DC converters
• High-efficiency power supplies
• Multiple output power systems
• DC/DC power converters
• Intelligent home energy systems
• Data center power converters
• Industrial automation applications
• Printed circuit board (PCB) cooling systems

In addition, the LM2595SX-5.0/NOPB is suitable for use in automotive, medical, and military applications, as well as other high-precision and/or high-reliability applications.

Working Principle

The LM2595SX-5.0/NOPB switching voltage regulator combines a fixed frequency PWM control circuit with a positive buck transition configured power switch and an LDO linear regulator block. This composition of components allows the chip to regulate the output voltage to a stable 5 volts, with a low ripple and high efficiency level, over a wide range of input voltages.

The chip features a PWM voltage modulated control circuit. This circuit produces a variable duty cycle signal at the output switch so that the input power can be efficiently used to convert the power of the input power source into the output voltage. The switching frequency of the PWM circuit is internally set, with an adjustable frequency option available when using an external resistor and capacitor combination.

The chip also features an adjustable pulse-width modulator circuit which helps maintain simplicity in system design. Additionally, the chip includes a soft-start circuit to reduce inrush current and provide better voltage regulation. It also includes a boost surge prevention circuit which can reduce output current spikes during the switching transitions.

The LM2595SX-5.0/NOPB switching voltage regulator also has built in protections and error-condition inputs. These include an over-temperature shutdown, an undervoltage lockout circuit, an overload protection circuit, and an output fault circuit. In addition, the device has several voltage sense pins which can be used to monitor the output voltage levels, allowing the system design to detect if the output voltage is within the expected range.

Conclusion

The LM2595SX-5.0/NOPB switching voltage regulator provides system designers with an efficient and reliable power management solution. Its wide range of features, including adjustable frequency and pulse-width modulation settings, allow for customization in system design. With its ability to deliver up to five volts in output from an input up to 35 volts DC, the device is suitable for applications where space and power are major constraints, as well as for those where high power efficiency and reliable operations are critical.