XR8121 is a wide input range, high-efficiencyand high frequency DC-to-DC step-down switchingregulator, capable of delivering up to 2A ofoutput current. With a fixed switching frequency of1MHz, this current mode PWM controlled converterallows the use of small external components,such as ceramic input and output caps, as wellas small inductors. ETA8121 also employs aforced PWM control scheme, thereby ensuring theminimum ripple voltage. Its input can withstanda voltage surge as high as 30V, making it anideal solution for industrial applications suchas Surveillance Camera, LCD TV, Set Top Box,etc.
二、FEATURES
Wide Input Range: 4.2V-28V
Forced PWM control
1MHz switching frequency
Capable of Delivering 2A
No External Compensation Needed
Current Mode Control
Thermal Shutdown and UVLO
Excellent Load and Line Transient Response
Available in SOT23-6 Package
三、APPLICATIONS
Surveillance Camera
Set Top Box
LCD TV
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