Analog Devices LTM8045IY#PBF, 1 Buck Boost Switching, Buck Boost Regulator 700mA, ±2.5 V → ±15 V, 2 MHz 40-Pin,

Linear Technology's offer a selection of inverting switching regulators, these regulators are designed to invert input voltages to negative outputs. Offering input voltages up to 60V and switch currents up to 10A with adjustable or fixed outputs. They may also incorporate integrated schottky diodes, fixed frequency operation, programmable current limit and low noise operation characteristics.

Switching Voltage Regulators, Linear Technology

Linear Technology product series of synchronous and non-synchronous internal switching regulator ICs offer high efficiency plus a wide input voltage range and switching frequencies up to 4MHz.
The controllers span over several types of configurations from buck (step-down), boost (step-up), buck-boost, forward, Isolated, Inverting and flyback controllers. The Flyback, Forward and Isolated Controllers primary and secondary side provide a solution to help replace the DC/DC bricks that get used in back-plane power conversion.