Monolithic Power Systems MP1477H
The MP1477H is a fully integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. The MP1477H offers a very compact solution that achieves 3A of continuous output current with excellent load and line regulation over a wide input range. The MP1477H uses synchronous-mode operation for higher efficiency over the output current-load range.DESCRIPTION
Constant-on-time (COT) control operation provides very fast transient response, easy loop design, and very tight output regulation. Full protection features include short-circuit protection (SCP), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown. The MP1477H requires a minimal number of readily available, standard, external components and is available in a space-saving SOT563 (1.6mmх1.6mm) package.FEATURES
● Wide 4.2V to 17V Operating Input Range● 58mΩ/25mΩ Low RDS(ON) Internal Power MOSFETs
● 200µA Low IQ
● High-Efficiency Synchronous Mode Operation
● Forced PWM Mode Operation
● Fast Load Transient Response
● 1.2MHz Switching Frequency
● Internal Soft Start (SS)
● Over-Current Protection (OCP) and Hiccup
● Thermal Shutdown
● Output Adjustable from 0.8V
● Available in a SOT563 (1.6mmх1.6mm) Package
APPLICATIONS
● Security Camera● Digital Set-Top Boxes
● Flat-Panel Television and Monitors
● General Purposes All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.