National Semiconductor LM3658SD-A/NOPB Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol) Function: Charge Management Mounting Type: Surface Mount Operating Temperature: -40?°C ~ 85?°C Package / Case: 10-WFDFN Exposed Pad Voltage - Supply: 4.35 V ~ 6 V Other Names: LM3658SD-ATR