The RTQ2838A is a high-performance, synchronous step-down converter that can deliver up to 8A output current with an input supply voltage range of 4V to 18V. The device integrates low RDS(ON) power MOSFETs, an accurate 0.5V reference and an integrated diode for the bootstrap circuit to offer a very compact solution.The RTQ2838A adopts internally-compensated fast current mode (FCM) control architecture that provides fast transient response and further reduces the external-component count. The FCM operates at a truly fixed switching frequency over the line, load and output voltage range and makes the EMI filter design easier.The device offers a variety of functions for more design flexibility. The selectable switching frequency allows the RTQ2838A to meet various application requirements. An independent enable control input pin and a power-good indicator are provided for easy sequence control. The built-in spread-spectrum frequency modulation further helps systems designers with better EMI management.Full protection features are also integrated in the device for increased reliability, including input UVLO, cycle-by-cycle current limit, OVP, UVP, OTP and selectable soft-start time to control the inrush current during the startup.The RTQ2838A is available in a thermally enhanced WQFN-14L 3x2.5 (FC) package. The recommended junction temperature range is -40°C to 150°C.
應用
- Wireless Infrastructure and Wired Communication Equipment
- Optical and Fiber Network Equipment
- Testing and Measurement Instruments
- Medical and Healthcare Equipment