TPS53125RGER

The Texas Instruments TPS53125RGER is a dual, adaptive on-time D-CAP2 mode synchronous buck controller designed for low voltage power rails. It offers a wide input voltage range from 4.5V to 24V and a switching frequency of 350kHz.

Key features include D-CAP2 mode control for fast transient response, compatibility with ceramic output capacitors, and no external parts required for loop compensation. The device boasts high initial reference accuracy of ±1% and low output ripple. It also incorporates low-side R DS(ON) loss-less current sensing and adaptive gate drivers with an integrated boost diode.

This controller is suitable for point-of-load regulation in low power systems across various applications such as digital TVs, networking equipment, home terminals, digital set-top boxes, DVD players/recorders, and gaming consoles. The TPS53125RGER comes in a 24-VQFN (4x4) surface mount package.

It operates within a temperature range of -40°C to 85°C (TA). The device supports adjustable soft start and non-sinking pre-biased soft start. Over-current limiting is controlled cycle-by-cycle with an OCP threshold voltage ranging from 30mV to 300mV, which is thermally compensated.