buck boost for 7.5w led from 6-9v AA battery supply

This sounds like a good application for the TPS63060 with this app note: http://www.ti.com/lit/an/slva419b/slva419b.pdf

Thanks for the replay,

                                         No this wont work,Please suggest something else......................

LM3429 in buck-boost configuration

Some more details about why it won't work and what you are looking for are required for us to recommend something else...

Hello sir,
I am stuck with finding an appropriate LED Driver for my High power Ir led flash for my project wildlife camera,my led spec is given below her i am requesting you to please suggest any driver IC for this.

Forward voltage-1.5V(each LED)
Forward current-1A(each LED)
From this my arrangement of led is in series of 5 LEDs,so total 7.5V ,I am going to switch this for an time of 1s ,My input is 6V-9V(2.8Ah) From the Duracell AA Batteries.Please suggest any driver ic with constant current boost converter

Dear chris glaser,

                                 Thanks for coming on this thread, I configured the TPS63060 in buck-boost mode,without load i checked it is perfectly giving 8V, But after connecting the 7.5W load the ic is going bad,and also another drawback is that is is not having the constant current output settings,if you have any suggestions most well come. 

Did you modify the EVM to operate in constant current mode, per this app note: http://www.ti.com/lit/an/slva419b/slva419b.pdf?