Datasheet LP3947ISD-09 - National Semiconductor CHARGER, USB, I2C, POWERWISE, LLP-14

Detailed Description

Manufacturer: National Semiconductor

Description: CHARGER, USB, I2C, POWERWISE, LLP-14

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Docket:
LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC
July 2006
LP3947 USB/AC Adaptor, Single Cell Li-Ion Battery Charger IC
General Description
The LP3947 is a complete charge management system that safely charges and maintains a Li-Ion battery from either USB power source or AC adaptor.

In USB mode, the LP3947 supports charging in low power or high power mode. Alternatively, the LP3947 can take charge from AC adaptor. In both USB and AC adaptor modes, charge current, battery regulation voltage, and End of Charge (EOC) point can be selected via I2C interface. The LP3947 can also operate on default values that are pre-programmed in the factory. The battery temperature is monitored continuously at the Ts pin to safeguard against hazardous charging conditions. The charger also has under-voltage and over-voltage protection as well as an internal 5.6 hr timer to protect the battery. The pass transistor and charge current sensing resistor are all integrated inside the LP3947. The L

Specifications:

• Base Number: 3947
• Battery Management Function: Charger
• Battery Type: Li-Ion
• Charge Current Max: 750 mA
• Input Voltage Max: 6 V
• Mounting Type: SMD
• Number of Pins: 14
• Number of Series Cells: 1
• Operating Temperature Range: -40°C to +85°C
• Output Voltage Max: 4.263 V
• Package / Case: LLP
• SVHC: No SVHC (15-Dec-2010)
• Supply Voltage Range: 4.3 V to 6 V

RoHS: Yes

Other Names:

LP3947ISD09, LP3947ISD 09