Texas Instruments

LP5018RSMR

The LP5018RSMR is a high-performance, low-power, single-cell lithium-ion (Li-ion) battery charger from Texas Instruments (TI). It is designed to provide efficient and reliable charging solutions for a wide range of applications, including portable devices, wearable electronics, and IoT devices.

Description:

The LP5018RSMR is a highly integrated, step-down battery charger with a built-in power MOSFET and a synchronous rectifier. It features a constant current/constant voltage (CC/CV) charging profile, which ensures safe and efficient charging of Li-ion batteries. The device is available in a compact 16-pin, 3mm x 3mm WQFN package.

Key Features:

1. Input voltage range: 3.5V to 5.5V
2. Programmable charge current up to 1A
3. Charge voltage adjustable from 3.7V to 4.4V
4. Integrated power MOSFET and synchronous rectifier for high efficiency
5. USB power delivery (PD) and charging port (BC1.2) compliance
6. Thermal regulation and thermal shutdown for safety
7. Battery temperature monitoring with NTC thermistor input
8. Charging status indicators (charge done, charging, and fault)
9. Low quiescent current (< 2µA in standby mode)
10. Programmable charging timer
11. Protection features: over-voltage protection (OVP), under-voltage protection (UVP), over-current protection (OCP), and short-circuit protection (SCP)

Applications:

1. Portable devices: smartphones, tablets, and laptops
2. Wearable electronics: smartwatches, fitness trackers, and AR/VR headsets
3. IoT devices: smart home devices, security cameras, and wireless sensors
4. Medical devices: portable medical equipment and wearable health monitors
5. Consumer electronics: portable speakers, e-readers, and gaming controllers
6. Industrial applications: portable data loggers, handheld scanners, and portable test equipment

The LP5018RSMR offers a flexible, efficient, and safe charging solution for single-cell Li-ion batteries, making it suitable for a wide range of applications where power efficiency and compact form factor are crucial.