Highly-versatile four-switch synchronous buck-boost controller
Now available from Mouser stock, the Texas Instruments (TI) LM5175 4-Switch
synchronous buck-boost controller is capable of regulating the output
voltage at, above, or below the input voltage.
The device operates over a wide input voltage range of 3.5V to 42V to
support a variety of applications - such as automotive start-stop systems,
backup battery and supercapacitor charging, industrial PC power supplies,
USB power delivery and LED lighting.
The LM5175 employs current-mode control both in buck and boost modes of
operation for superior load and line regulation. The switching frequency is
programmed by an external resistor and can be synchronized to an external
Features include programmable soft-start function, and numerous protection
features (cycle-by-cycle current limiting, input under-voltage lockout
(UVLO), output over-voltage protection (OVP) and thermal shutdown). The
device also includes selectable continuous conduction mode (CCM) or
discontinuous conduction mode (DCM) operations. Evaluation tools are also