TI (Texas Instruments) BQ2019PWG4 Battery Ic Case Style: TSSOP Battery Type: Lithium-Ion (Li-Ion); Nickel-Metal Hydride (NiMH) Function: Battery Monitor Interface Type: 1-Wire, Serial Lead Free Status / Rohs Status: Lead free / RoHS Compliant Maximum Operating Temperature: + 70 C Minimum Operating Temperature: - 20 C Mounting Style: SMD/SMT Mounting Type: Surface Mount No. Of Batteries: 3 No. Of Pins: 8 Operating Supply Voltage: 2.8 V to 5.5 V Operating Temperature: -20?°C ~ 70?°C Operating Temperature Range: -20?‚?°C To Package / Case: 8-TSSOP (0.173", 4.40mm Width) Product: Charge Management Rohs Compliant: Yes Supply Voltage Range: 2.8V To 5.5V Voltage - Supply: 2.8 V ~ 5.5 V