17V, 3A, 800kHz, High-Efficiency, Synchronous, Step-Down Converter with COT Control in SOT563 Package
The MP1477 is a fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. The MP1477 offers a very compact solution that achieves 3A of continuous output current with excellent load and line regulation over a wide input range. The MP1477 uses synchronous mode operation for higher efficiency over the output current-load range.
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 MP1477 requires a minimal number of readily available, standard, external components and is available in a space-saving SOT563 (1.6mmх1.6mm) package.
- Wide 4.2V to 17V Operating Input Range
- 58mΩ/27mΩ Low RDS(ON) Internal Power MOSFETs
- 200µA Low IQ Current
- High-Efficiency Synchronous Mode Operation
- Power Save Mode (PSM) at Light Load
- Fast Load Transient Response
- 800kHz 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
- fsw (max) (kHz)800
- Vin (min) (V)4.2
- Vin (max) (V)17
- Iout (max) (A)3
- Isw Limit (typ) (A)4
- Vfb (V)0.805
- Iq (typ) (mA)0.2
- Regulated Outputs1
- Vout (max) (V)10
- Vout (min) (V)0.8
- Control ModeCOT
- Common FeaturesLight-Load Efficiency, Synchronous Rectification
High-Efficiency, 800kHz, 3A, 17V, Step-Down Converter Evaluation Board
The EV1477-TF-00B evaluation board is designed to demonstrate the capabilities of the MP1477, a fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 3A of continuous output current over a wide input range, with excellent load and line regulation. The MP1477 has synchronous mode operation for higher efficiency over the output current load range.
Constant-on-time control operation provides very fast transient response and easy loop design, as well as very tight output regulation. Full protection features include SCP, OCP, UVP, and thermal shutdown.
The MP1477 requires a minimal number of readily available, standard external components, and is available in a space-saving SOT563 (1.6mmx1.6mm) package.
￥2,716.25 + tax