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 - Voltage Reference

Introduction

The MAX6325CPA+ is a low-dropout (LDO) voltage regulator, designed to minimize output voltage ripple and offer good transient response. Using a wide input-voltage range, it can be used in a variety of applications, from point-of-load regulation to switching-mode-power-supply (SMPS) regulation. The MAX6325CPA+ is offered in a tiny, low-profile, SOT-23-5 package and is available in both adjustable and fixed output-voltage versions. Its small size, good output accuracy, low quiescent current, and low dropout make it ideal for many space-constrained portable applications.

Features

• Low quiescent current: 1.1mA (typ) at 25°C
• Low dropout voltage: 250mV (typ) at 25mV load current
• Available in adjustable (2.5V to 6.0V) and fixed versions
• Very low input noise
• Reverse input-current protection prevents reverse leakage
• High PSRR: excellent PSRR performance over a wide frequency range
• Small, low-profile SOT-23-5 package
• High output current capability: 150mA (max)

Applications

The MAX6325CPA+ is well-suited for use in a wide range of applications and can be employed in a variety of ways, including point-of-load regulation, input voltage regulation and SMPS regulation. It is especially suitable for portable devices and those applications that require a small form factor.

The device is suitable for use in a variety of applications, including: integrated battery chargers, portable electronics, personal digital assistants (PDAs), cellular phones, laptop and desktop computers and other battery-powered applications.

Work Principle

The MAX6325CPA+ can be used with both an adjustable output voltage and a fixed output voltage. The adjustable model is available in a range of 2.5V to 6.0V, with 0.01V increments. The device can be set to a range of output voltages via an external resistor divider network. In the fixed versions, the output voltage is determined by the voltage rating of the series transistor (Tx).

The voltage regulator uses a series transistor to achieve its low-dropout performance. The N-channel series transistor (Tx) is connected between the output and the PVIN pin, which is the input to the internal error amplifier\'s non-inverting input. The error amplifier adjusts the current going through Tx, based on the voltage of the output and PVIN pins, so as to maintain a constant output voltage.

The MAX6325CPA+ also includes an adjustable reset circuit, which enables the device to be used for output reset applications. The reset circuit generates an output reset signal whenever the output voltage drops below the set threshold (the adjustable threshold is set via an external voltage divider). This circuit is also used for overvoltage protection, when the device is configured for an adjustable output voltage.

Conclusion

The MAX6325CPA+ offers good low-dropout performance, high power supply rejection ratio (PSRR), low quiescent current, small size and high output current capability, making it an ideal choice for a wide range of applications, such as point-of-load regulation, input voltage regulation and SMPS regulation.

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