Datasheet LTC4078EDD - Linear Technology BATT CHARGER, LI ON, DUAL, 10DFN — Datenblatt

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Manufacturer: Linear Technology

Description: BATT CHARGER, LI ON, DUAL, 10DFN

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LTC4078/LTC4078X Dual Input Li-Ion Battery Charger with Overvoltage Protection FEATURES
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DESCRIPTION
The LTC®4078/LTC4078X are standalone linear chargers that are capable of charging a single-cell Li-Ion/Polymer battery from both wall adapter and USB inputs.

The chargers can detect power at the inputs and automatically select the appropriate power source for charging. No external sense resistor or blocking diode is required for charging due to the internal MOSFET architecture. The LTC4078/LTC4078X feature a maximum 22V rating for both wall adapter and USB inputs, although charging stops if the selected power source exceeds the overvoltage limit. Internal thermal feedback regulates the battery 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. The LTC4078/LTC4078X terminate the charge cycle

Specifications:

• Base Number: 4078
• Battery Charge Voltage: 4.2 V
• Battery IC Case Style: DFN
• Battery Management Function: Charger
• Battery Type: Li-Ion
• Charge Current Max: 950 mA
• Input Voltage Max: 5.5 V
• Input Voltage: 5.5 V
• Mounting Type: SMD
• Number of Pins: 10
• Number of Series Cells: 1
• Operating Temperature Range: -40°C to +85°C
• Output Voltage Max: 4.2 V
• Package / Case: DFN
• SVHC: No SVHC (15-Dec-2010)
• Supply Voltage Range: 4.3 V to 5.5 V

RoHS: Yes