MxL76500
Overview
| Information | 17V, 5A, Synchronous Buck Regulator |
|---|---|
| # of Outputs | 1 |
| IOUT (A) | 5 |
| VIN MIN (V) | 4.5 |
| VIN MAX (V) | 17 |
| IQ (µA) | 320 |
| VOUT MIN (V) | 0.6 |
| VOUT MAX (V) | 6 |
| Frequency (kHz) | 500, 1000 |
| Accuracy (%) | 1 |
| Efficiency (%) | 94 |
| Package | QFN-10 |
| X x Y Package Dimension (mm) | 2 x 2 |
| Control Mode | Fixed frequency COT |
| Special Features | Patented COT control, UVLO, OCP, OTP, soft-start, latch, hiccup, PGOOD, Current limit and short protection |
| Operating Temperature (°C) | -40 to 125 |
The MxL76505 is a synchronous step-down switching voltage regulator capable of delivering up to 5A of load current. The device has a working input voltage range of 4.5V to 17V. Output voltage can be adjusted between 0.6V and 6V.
The MxL76505 can be configured to work in either diode emulation mode (DEM) that improves the efficiency at light loads by lowering the switching frequency or forced continuous conduction mode (FCCM) that maintains the same switching frequency regardless of load. Dynamic switching between DEM and FCCM is supported.
The MxL76505 comes in two switching frequency versions, 500kHz and 1MHz. The 500kHz version has less switching loss and supports a higher input-to-output voltage conversion ratio. The 1MHz version supports a smaller output LC filter and is also faster in responding to load transients.
The MxL76505 employs a fixed frequency constant on-time (COT) control architecture. Feedback loop compensation is internal and has been designed to work with an all- ceramic output capacitor bank. Load transient response, both in CCM and DCM, is ultra fast with a properly selected output LC filter. Soft start is programmable via an external capacitor.
Protection features include over-current protection (OCP), and under-voltage protection ( UVP), thermal shutdown and input under-voltage lockout (UVLO).
The MxL7675 is available in a 2mm × 2mm thermally enhanced 10-pin QFN package.
Up to 5A of load current
Input voltage range from 4.5V to 17V
Output voltage range from 0.6V to 6V
1.5% feedback accuracy
Fast load transient response
Excellent line transient rejection
500kHz or 1MHz switching frequency
High light-load efficiency in DEM
Advanced feedback protection
Dynamic switching between DEM and FCCM
Programmable soft start
Output over-current protection
Output under-voltage protection
Thermal shutdown
Input under-voltage lockout
Hiccup or latch operation upon fault
Thermally enhanced 2mm × 2mm QFN package
Set-top boxes
Point-of-load regulators
FPGA power
