●The TPS54239E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54239E enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54239E uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54239 to maintain high efficiency during lighter load conditions. The TPS54239E also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 23-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54239E is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.
● D-CAP2 Mode Enables Fast Transient Response
● Low Output Ripple and Allows Ceramic Output Capacitor
● Wide VIN Input Voltage Range: 4.5 V to 23 V
● Output Voltage Range: 0.76 V to 7.0 V
● Highly Efficient Integrated FETs Optimized
●for Lower Duty Cycle Applications
●– 140 mΩ (High Side) and 70 mΩ (Low Side)
● High Efficiency, less than 10 µA at shutdown
● High Initial Bandgap Reference Accuracy
● Adjustable Soft Start
● Pre-Biased Soft Start
● 600-kHz Switching Frequency (fSW)
● Cycle By Cycle Over Current Limit
● Auto-Skip Eco-mode for High Efficiency at Light Load
