The SMB345ET2130Y is a highly integrated battery charging management IC manufactured by Qualcomm. It is designed for single-cell Lithium-Ion and Lithium-Polymer batteries, providing efficient and safe charging for a wide range of portable devices. This IC incorporates advanced features such as dynamic power path management, over-voltage protection, and thermal regulation to ensure optimal battery performance and safety.

Applications:

• Smartphones and tablets.
• Portable media players.
• Digital cameras.
• Wearable devices (smartwatches, fitness trackers).
• Power banks.

Features:

• Single-cell Li-Ion/Li-Polymer battery charger.
• Input voltage range: Typically 4.2V to 5.5V.
• Charging current: Programmable charging current up to several amps.
• Dynamic Power Path Management (DPPM): Allows the system to operate even with a depleted battery.
• Over-voltage protection (OVP): Protects the battery from excessive voltage.
• Over-current protection (OCP): Limits the charging current to a safe level.
• Short-circuit protection (SCP): Shuts down the charger in case of a short circuit.
• Thermal regulation: Prevents the IC from overheating.
• Automatic battery voltage detection.
• Charge status indication.

Benefits:

• Efficient charging: Maximizes battery charging efficiency, reducing charge time.
• Safe charging: Protects the battery from over-voltage, over-current, and short circuits.
• Extended battery life: DPPM allows the system to operate even with a depleted battery, extending battery life.
• Compact design: Highly integrated IC reduces the number of external components.
• Easy to use: Simplifies the design of battery charging circuits.
• Reliable performance: Provides stable and consistent charging performance.

Additional Details:

The SMB345ET2130Y is typically packaged in a small QFN or similar surface-mount package. The charging current can be programmed using external resistors. The datasheet provides detailed information on the device's electrical characteristics, application circuits, and layout guidelines. Proper PCB layout is crucial for achieving optimal performance and thermal management. The IC is RoHS compliant.