Linear Technology's LT1555CGN Power Management IC

The LT1555CGN is a versatile and powerful power management integrated circuit (IC) designed by Linear Technology, a leader in the field of analog integrated circuits. This component is engineered to provide efficient charging solutions for single-cell lithium-ion batteries, which are widely used in portable electronic devices such as smartphones, tablets, and laptops.

Key Features

• Charging Voltage: The LT1555CGN offers a precise float voltage of 4.1V, which is optimal for single-cell lithium-ion batteries, ensuring a full charge without overcharging.
• High Charging Current: It is capable of delivering up to 150mA charging current, which can be externally adjusted to meet various battery capacities and charging speed requirements.
• Thermal Regulation: To protect the battery and circuitry, the IC incorporates thermal regulation, which prevents overheating by automatically reducing charge current.
• Charge Status Indicators: The device includes status indication pins that can be used to drive LEDs, providing visual feedback on the charging process.
• Low Dropout Voltage: The low dropout voltage ensures efficient charging even when the input supply voltage is close to the battery voltage.
• Automatic Recharge: The LT1555CGN automatically initiates a new charge cycle if the battery voltage falls below a preset threshold, maintaining the battery at full charge.

Package and Reliability

The LT1555CGN comes in a 16-pin narrow SSOP (Shrink Small Outline Package) which is suitable for space-constrained applications. The device is characterized for operation from -40°C to 85°C, ensuring reliable performance across a wide range of temperatures.

Applications

Due to its compact size and comprehensive feature set, the LT1555CGN is an excellent choice for a variety of applications that require efficient and reliable battery charging. It is ideal for portable medical devices, handheld instruments, and any other application that utilizes single-cell lithium-ion batteries.

With its advanced features and robust design, the LT1555CGN by Linear Technology stands out as a high-quality power management solution for modern electronic devices.