TIDUF23 may 2023
The LM5158x-Q1 is a wide input range, non-synchronous boost converter that uses peak-current-mode control. The device can be used in boost, SEPIC, and flyback topologies. The device can start up with a minimum of 3.2 V. The device can operate with input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.2 V. The internal VCC regulator also supports BIAS pin operation up to 60 V (65-Vabsolute maximum) for automotive load dump. The switching frequency is dynamically programmable from 100 kHz to 2.2 MHz with an external resistor. Switching at 2.2 MHz minimizes AM band interference and allows for a small design size and fast transient response. The device provides an optional dual random spread spectrum to help reduce the EMI over a wide frequency span.