LM3658SD-A

The LM3658SD-A is a highly integrated USB/AC in-wall battery charger IC designed for portable devices. It offers advanced charging features and protection mechanisms to ensure safe and efficient charging of lithium-ion batteries.

Pinout

(Note: The pin configuration provided below is a general representation. Refer to the specific datasheet for accurate details.)

• VBUS: Input power from USB or AC source
• PG: Power Good indicator
• CE: Charger enable pin
• VOUT: Output voltage to the battery
• TS: Temperature sense pin
• STAT1: Status indicator 1
• STAT2: Status indicator 2
• PGND: Power ground
• VREF: Voltage reference pin
• PROG: Programmable charge current pin
• TS: NTC thermistor input for temperature monitoring
• STAT3: Status indicator 3

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the LM3658SD-A IC for a visual representation.

Key Features

• Integrated Charger: The LM3658SD-A integrates a complete charger system with power management functions in a single IC.
• Advanced Charging Algorithms: Offers various charging profiles and algorithms to optimize battery charging efficiency.
• Protection Mechanisms: Includes built-in safeguards such as thermal shutdown, overvoltage protection, and short-circuit protection for safe operation.
• Programmable Charge Current: Allows flexibility in setting the charge current according to battery specifications.
• Status Indicators: Provides multiple LEDs or pins for visual indication of charging status and fault conditions.

Note: For detailed technical specifications, refer to the LM3658SD-A datasheet.

Application

• Smartphones and Tablets: Ideal for charging lithium-ion batteries in portable electronic devices like smartphones and tablets.
• Power Banks: Suitable for use in power banks and portable chargers for recharging batteries on the go.
• Portable Consumer Electronics: Commonly used in various portable consumer electronic devices for battery charging applications.

Functionality

The LM3658SD-A is designed to efficiently charge lithium-ion batteries using advanced charging algorithms and protection features. It ensures safe and reliable battery charging for a range of portable devices.

Usage Guide

• Power Input: Connect VBUS (Pin 1) to the USB or AC power source for charging.
• Battery Connection: Connect VOUT (Pin 4) to the positive terminal of the lithium-ion battery.
• Thermal Monitoring: Use the TS (Pin 5) pin for connecting an NTC thermistor to monitor battery temperature.

Frequently Asked Questions

Q: What is the maximum charging current supported by the LM3658SD-A?
A: The LM3658SD-A supports programmable charge currents up to a certain maximum value specified in the datasheet.

Q: Does the LM3658SD-A support fast charging for lithium-ion batteries?
A: Yes, the LM3658SD-A is designed to support fast and efficient charging of lithium-ion batteries with appropriate charging profiles.