MxL76500
Overview
| Information | 15V, 5A, Synchronous Buck Regulator |
|---|---|
| # of Outputs | 1 |
| IOUT (A) | 5 |
| VIN MIN (V) | 4.5 |
| VIN MAX (V) | 15 |
| IQ (µA) | 320 |
| VOUT MIN (V) | 0.6 |
| VOUT MAX (V) | 1 |
| 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 MxL76500 is a 5A synchronous step-down switching voltage regulator designed to pair with the MxL7080 power manager which interfaces with MaxLinear’s AnyWANTM SoC URX800/600 series and PUMATM 8 DOCSIS 4.0 SoC.
In a typical system design, four MxL76500 regulators provide the power for CPU0, CPU1, ADP, and ROC rails. The companion MxL7080 device controls the output voltage regulation setpoints including dynamic positioning (DVS) along with sequencing through the MxL76500 REF_IN and enable pins while simultaneously monitoring the PGOOD pins for any faults. If any fault occurs resulting in a latch-off, the MxL7080 power manager restarts the system.
The MxL76500 has a working input voltage range from 4.5V to 15V with 500kHz and 1MHz switching frequency allowing you to trade off size versus efficiency.
The MxL76500 employs a fixed frequency constant on-time (COT) control architecture providing fast transient response. Feedback loop compensation is internal and is designed to work with all-ceramic output capacitors. The MxL76500 can be configured to work in either diode emulation mode (DEM) that improves the efficiency at light or forced continuous conduction mode (FCCM) to maintain constant switching frequency. Dynamic switching between DEM and FCCM is supported.
Protection features include over-current protection (OCP), under-voltage protection (UVP), thermal shutdown, and input under-voltage lockout (UVLO).The MxL76500 is available in a 2mm × 2mm thermally enhanced 10-pin QFN package.
Power solution for URX800/600 SoCs when paired with MxL7080
Up to 5A of load current
Input voltage range from 4.5V to 15V
Output voltage range from 0.6V to 1.0V
DVS and soft start controlled by MxL7080
Latch-off fault
Fast load transient response
Excellent line transient rejection
500kHz or 1MHz switching frequency
High light-load efficiency in DEM
Dynamic switching between DEM and FCCM
Output over-current protection
Output under-voltage protection
Thermal shutdown
Input under-voltage lockout
Thermally enhanced 2mm × 2mm QFN package
DOCSIS 4.0 modems and gateways
Fiber optics home gateway unit (HGU)
Ethernet Wi-Fi home router
DSL/G.fast home gateway
Fixed wireless access (FWA) home gateway
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Whitepapers | Power Management Solution for MaxLinear AnyWAN and Puma 8 DOCSIS 4.0 SoCs | R01 | September 2025 | 1.5 MB |
Parts & Purchasing
| Part Number | Pkg Code | Notes | Status |
|---|---|---|---|
| MXL76500C-AQF-R | MxL7080/MxL76500 power manager EVK provides 4-rails for URX800/600 SoC | PRE | |
| MXL76500D-AQF-R | PRE | ||
| MXL7080-EVK-1 | Board | MxL7080/MxL76500 power manager EVK provides 4-rails for URX800/600 SoC | PRE |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
