LM5175QPWPRQ1

42V 宽输入电压、同步 4 开关降压/升压控制器 28-HTSSOP -40 to 125

The LM5175-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5175-Q1 operates over a wide input voltage range of 3.5 V to 42 V 60 V maximum to support a variety of applications.

The LM5175-Q1 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 clock signal.

The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout UVLO, output overvoltage protection OVP, and thermal shutdown. In addition, the LM5175-Q1 features selectable Continuous Conduction Mode CCM or Discontinuous Conduction Mode DCM operation, optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.