LTC3588IDD-1#PBF

LTC3588IDD-1#PBF Application Field and Working Principle

The LTC3588IDD-1#PBF is a high performance, highly integrated, low-cost power management IC for smartphones and other mobile devices. This IC offers the industry’s highest level of integration and best-in-class transient response and efficiency, enabling greater battery life and power savings. It also has a rich peripheral and protection feature set.

The LTC3588IDD-1#PBF IC combines a dual-phase buck DC/DC converter, linear regulator, and a dual-channel battery charger into a single chip. The dual-phase buck converter can provide up to 2 A of output current, with an efficiency over 92%. The linear regulator can deliver up to 500 mA of output current for system peripherals such as audio amplifiers, LED drivers, and motors. The dual-channel charger supports battery pack charge-rate voltages of 4.2 V, 5.0 V, and 5.9 V, with a charging current up to 2.1 A.

The different packages of the LTC3588 are highly compatible and flexible, offering different form factors and pin counts, while featuring high integration and high levels of protection. These include EMI-shielded packages and variants with dedicated S/N pins for system integration. Advanced floating channel protection also ensures device longevity.

Functions and Features

The LTC3588IDD-1#PBF IC features a two-phase, two-channel buck DC/DC converter core. It is designed to regulator outputs from 0.6 V to 3.3 V with a maximum output current of 1.25 A or 2 A, depending on the version. It is highly efficient, with an efficiency of up to 95%.

The single-channel charging circuit supports charging currents up to 2.1 A, making it ideal for use with USB-C power sources. It supports voltage ranges from 4.2 V to 5.9 V, making it compatible with all the popular battery pack voltages. Battery charging is done in a flexible, multi-mode fashion, including constant current/constant voltage (CCCV), temperature-compensated charging, and fast charge pre-qualification. The battery charging circuit also integrates multiple levels of safety and protection, including reverse current and short-circuit protection.

The linear regulator provides up to 500 mA of output current with an accuracy of 0.6%. It is designed to regulate down to 0.8 V, making it suitable for use with low-leakage current audio amplifiers and similar peripherals. The linear regulator is also able to provide the system supervisory rail (TLV893) to interface with a wide range of system components.

The LTC3588IDD-1#PBF IC provides a wide range of protection features, including undervoltage lockout, output overcurrent protection, short-circuit protection, over/under temperature protection, and overvoltage protection. It also has an input EMI filter to reduce EMI noise.

Applications

The LTC3588IDD-1#PBF IC is ideal for use in mobile applications, such as smartphones, tablets, and wearable devices. It is suitable for applications where ultra-low power consumption and high efficiency are required. Its compact, highly integrated form factor and cost-effective price make it an attractive choice for designers of next-generation mobile devices.

Working Principle

The LTC3588IDD-1#PBF IC utilizes a two-phase buck converter, linear regulator, and dual-channel battery charger. The dual-phase buck converter is designed to deliver up to 2 A of output current with an efficiency of up to 95%. The linear regulator is designed to deliver up to 500 mA of output current with an accuracy of 0.6%. The dual-channel battery charger supports voltage ranges from 4.2 V – 5.9 V, with a charging current up to 2.1 A.

The LTC3588IDD-1#PBF IC also features flexible processor and system supervisory functions. It integrates a wide range of safety and protection features, such as reverse current, short-circuit, and over/under temperature protection. It also integrates an EMI filter to reduce EMI noise. In addition, it includes a dedicated S/N pin to facilitate system integration.