LTC4063EDD#PBF

LTC4063 is a standalone linear charger for single cell lithium-ion batteries with an adjustable low dropout linear regulator (LDO). The adjustable LDO regulates an output voltage between 1.2V to 4.2V at upto 100mA load current. When the input supply (wall adapter or USB supply) is removed, the LDO regulates the output voltage without interruption. The battery charger and LDO regulator can be enabled individually. No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The float voltage is fixed at 4.2V and the charge current is programmed with an external resistor. Charge termination methods include minimum charge current or maximum time. It is widely used in applications such as handheld computers, portable MP3 players, digital cameras etc.

• Charge current programmable upto 1A
• Charges single cell Li-ion batteries directly from USB port
• Preset charge voltage with ±0.35% accuracy
• Thermal regulation maximizes charge rate without risk of overheating
• Programmable charge termination timer, programmable charge current detection/termination
• SmartStart™ prolongs battery life, charge status output
• ICC shutdown current is 35µA typ at (shutdown, CHGEN = 5V, VCC <lt/> VBAT or VCC <lt/> VUV)
• LDO quiescent current is 15µA typ at (TA = 25°C, VCC = 5V)
• VCC supply voltage from 4.3V to 8V
• Operating temperature range from -40°C to 85°C, package style is 10-lead plastic DFN

Uwagi

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