This is one LOT (10 pieces) of New Japan Radio Co, Ltd Step Down Switching Regulator IC, Part Number: NJU7631RB1 in TVSP8 (Similar to 8-TSSOP) 8 Pin Package.

• Input Voltage: +2.2V to +8.0V
• Wide Oscillation Frequency: 300KHz to 1MHz
• Maximum Duty Cycle: 100%
• Quiescent Current: 800uA typ.
• Operating Junction Temp: -40C to +85C
• TVSP8 (8-TSSOP) Package

Detail Spec on Web as follows:

http://www.njr.com/semicon/PDF/NJU7631_E.pdf

TVSP8 Package:

http://www.njr.com/semicon/PDF/package/MSOP8(TVSP8)_E.pdf