National Semiconductor LM5045MH/NOPB Boost: Yes Buck: Yes Cuk: No Divider: No Doubler: No Duty Cycle: 93% Flyback: No Frequency - Max: 540kHz Inverting: Yes Isolated: Yes Number Of Outputs: 1 Operating Temperature: -40?°C ~ 125?°C Package / Case: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad Pwm Type: Voltage/Current Mode Series: PowerWise?® Voltage - Supply: 7.5 V ~ 9.9 V