DESCRIPTION

· The LM5176 is a synchronous four-switch buck-boost DC/DC controller.

· It regulates output voltage at, above, or below the input voltage.

· Operates over a wide input voltage range of 4.2 V to 55 V (60-V absolute maximum).

· Uses current-mode control for superior load and line regulation.

· Features programmable soft-start and protection functions.

FEATURES

· Functional Safety-Capable with documentation for system design.

· Single inductor buck-boost controller for step-up/step-down conversion.

· Wide V IN: 4.2 V (2.5 V with bias) to 55 V (60 V maximum).

· Flexible V OUT: 0.8 V to 55 V with short protection.

· High efficiency buck-boost transition and adjustable switching frequency.

· Integrated 2-A MOSFET gate drivers and cycle-by-cycle current limit.

· Programmable input UVLO and soft start with Power Good and OVP.

· Available in HTSSOP-28 and QFN-28 packages.

APPLICATIONS

· Industrial PC power supplies.

· USB power delivery.

· Battery-powered systems.

· LED lighting.