Linear Technology LTC1733EMSE#TR Battery Charger IC

The LTC1733EMSE#TR is a highly sophisticated and efficient single-cell lithium-ion battery charger IC designed and manufactured by Linear Technology. This integrated circuit is tailored to provide a reliable charging solution for portable electronic devices that require a single-cell lithium-ion or lithium-polymer battery.

Featuring a programmable charge current up to 1A, the LTC1733EMSE#TR ensures that batteries are charged quickly and safely. The device operates over a wide input voltage range and integrates a thermal regulation mechanism to maximize the charge rate without the risk of overheating.

Key Features:

• Programmable Charge Current Up to 1A
• No MOSFET, Sense Resistor or Blocking Diode Required
• Constant-Current / Constant-Voltage Operation with Thermal Regulation
• High Accuracy Preset Voltage: 4.2V ±1%
• Charge Current Monitor Output for Gas Gauging
• Automatic Recharge Feature
• C/10 Charge Termination
• Soft-Start Limits Inrush Current
• Status Pin Indicates Charge in Progress
• Available in a Compact 10-Lead MSOP Package

The LTC1733EMSE#TR is designed to work autonomously, requiring minimal external components to create a complete charging system. Its internal MOSFET eliminates the need for an external sense resistor or blocking diode, which simplifies the design and reduces the overall solution footprint. The constant-current/constant-voltage charge algorithm with thermal regulation ensures that the battery is charged efficiently and safely, extending the life of the battery.

An additional feature of this IC is its charge current monitor output, which can be used for gas gauging purposes, providing an estimate of the remaining battery capacity. The automatic recharge feature initiates a new charge cycle when the battery voltage falls below a preset threshold, ensuring the battery remains fully charged.

The LTC1733EMSE#TR is available in a compact 10-Lead MSOP package, making it an ideal choice for space-constrained applications. Its status pin provides a clear indication of the charging process, which is helpful for user interface design. Whether you're designing for handheld devices, medical equipment, or any other portable application, this battery charger IC offers a reliable and efficient solution for your power management needs.