RY9121E 17V 2A 1.2MHz ECOT PWM Sync Step-Down Regulator

1、Features

• Wide 4.5V to 17V Operating Input Range 

• 2A Continuous Output Current 

• 1.2MHz Switching Frequency 

• ECOT Mode Control with Fast Transient  Response

• Built-in Over Current Limit 

• Built-in Over Voltage Protection 

• Force-PWM Mode 

• Internal Soft-Start

• 110mΩ/70mΩ Low RDS(ON) Internal Power MOSFETs 

• Output Adjustable from 0.6V 

• No Schottky Diode Required 

• Short Protection with Hiccup-Mode 

• Integrated internal compensation 

• Thermal Shutdown 

• Available in SOT23-6 Package 

• -40°C to +85°C Temperature Range

2、Applications

• Digital Set-top Box (STB) 

• Tablet Personal Computer (Pad)

• Flat-Panel Television and Monitor 

• Wi-Fi Router / AP 

• Digital Video Recorder (DVR) 

• Portable Media Player (PMP) 

• Cable Modem / XDSL 

• General Purposes

3、General Description

      The RY9121E is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 2A continuous output current over a wide input supply range, with excellent load and line regulation. ECOT control operation provides very fast transient response and easy loop design as well as very tight output regulation.

    The RY9121E requires a minimal number of readily available, external components and is available in a space

    saving SOT23-6 package.

4、Website：www.baitaishengshi.com

5、Typical Application Circuit