LTC1530CS8-2.5#PBF

PMIC - Voltage Regulators - Special Purpose

The LTC1530CS8-2.5#PBF is a special purpose voltage regulator intended for charger applications. It is a high output current positive voltage regulator that can provide a continuous output current of up to 2.5A at up to 8.0V. The device is based on a charge-pump architecture and uses a synchronous P-channel MOSFET as the pass device. The LTC1530CS8-2.5#PBF is designed to provide the necessary accuracy for use in noise-sensitive analog and digital applications.

Features

• Wide input voltage range: 4.5V to 18V
• High output voltage accuracy: 0.5% at 8.0V
• Maximum output current of 2.5A
• Low output voltage ripple of 7 mVpp
• Low feedback voltage: 2.5V
• Low quiescent current: 3.3 mA

Application Fields

The LTC1530CS8-2.5#PBF is suitable for powering a wide range of consumer devices such as cellular phones, digital cameras, PDAs, consumer audio and portable medical equipment. The device is designed to be used in both single and multiple output charger designs. The low feedback voltage and high output accuracy make the device ideal for low noise analog and digital applications.

Working Principle

The LTC1530CS8-2.5#PBF is a synchronous high current charge pump regulator, with a built-in boost converter. The device utilizes an input voltage range of 4.5V to 18V and a maximum output voltage of 8.0V. The device is capable of providing a continuous output current of up to 2.5A at an output voltage accuracy of 0.5%.

The device uses a P-channel MOSFET as the pass device which is controlled by the internal charge-pump circuit. During heavy load steps, the charge-pump circuit supplies the output as necessary to maintain the regulated output voltage. The device also features a low quiescent current, low feedback voltage and a low output voltage ripple of 7mVpp.

Conclusion

The LTC1530CS8-2.5#PBF is a high output current, synchronous charge pump voltage regulator, with a wide input voltage range, high output voltage accuracy, maximum output current of 2.5A, low output voltage ripple, low quiescent current and low feedback voltage. The device is ideal for powering a wide range of consumer devices such as cellular phones, digital cameras, PDAs, consumer audio and portable medical equipment.