MP8759GD-P - 8A, 26V Sync Buck Converter | MPS
MPN: MP8759GD-P β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.3 | $2.30 |
| 10 | $2.06 | $20.60 |
| 100 | $1.82 | $182.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.44 | $1,440.00 |
MP8759GD-P Overview
A synchronous buck converter (also called a step-down or DC-DC switching regulator) is a power management IC that uses integrated high-side and low-side MOSFETs, an oscillator, and a control loop to convert a higher input voltage into a lower regulated output with high efficiency. Within the power-management hierarchy, it sits between raw supply rails (such as 12V or 24V buses) and point-of-load consumers like processors, FPGAs, and memory.
Key features include 8A continuous / 10A peak output current, a wide input range suited to 12V and 24V intermediate bus architectures, low quiescent current for light-load efficiency, and a high switching frequency that shrinks external inductor and capacitor sizes. MPS' proprietary control topology keeps efficiency high across a wide output-current load range, which is critical in always-on and multi-rail systems.
Technically, the MP8759 integrates the power switches, gate drive, and compensation internally, offering a very compact single-inductor solution. Fixed-frequency switching operation enables predictable EMI filtering, and internal protection features such as cycle-by-cycle current limiting and thermal shutdown guard against fault conditions.
Typical applications include FPGA and ASIC core/IO power rails, networking and telecom equipment point-of-load supplies, and industrial 12V/24V bus systems that need a compact high-current step-down stage.
When designing with the MP8759GD-P, pay attention to PCB layout: place the input ceramic capacitors and inductor close to the IN and SW pins, and use solid ground planes to minimize the high-frequency switching loop. Verify thermal dissipation at full 8A load with the QFN-12 exposed pad soldered to a copper pour.
This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop selection resource.
Drop-in alternatives for MP8759GD-P β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
MP8759GD
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
MP8759GD-Z
β Drop-Inπ Reference alternative (not in catalog)
MP8759GD-P Maximum Ratings & Electrical Characteristics
| Topology | Synchronous Step-Down (Buck) Converter |
| Output Type | Adjustable, Positive |
| Feedback Reference Voltage | 0.6 V |
| Output Voltage Range | 0.6 V to 5.5 V |
| Input Voltage Range | 4.5 V to 24 V |
| Maximum Continuous Output Current | 8 A |
| Peak Output Current | 10 A |
| Number of Outputs | 1 |
| Package | 12-PowerVFQFN (QFN-12) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C |
| Protection Features | Thermal shutdown, current limit |
| RoHS Status | Compliant (P suffix = Tape and Reel for MPS green parts) |
| Special Modes | Ultrasonic Mode (USM), light-load efficiency mode |
MP8759GD-P 12-powervfqfn (qfn-12) Pin Configuration Guide
Pin configuration for MP8759GD-P (12-powervfqfn (qfn-12) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for MP8759GD-P.
Refer to the datasheet for full pin configuration.
Typical Applications
MP8759GD-P is suitable for 6 applications: FPGA / ASIC Point-of-Load Power, Networking and Telecom Equipment, Industrial 24V Bus Systems, Storage and Server Peripheral Rails, Consumer Display and Set-Top Electronics, Battery-Powered and Portable High-Current Devices.
FPGA / ASIC Point-of-Load Power
FPGA and ASIC core rails commonly require 0.9V-1.2V at multi-amp levels with tight regulation and fast transient response. The MP8759GD-P fits this role with its 8A continuous and 10A peak output capability, adjustable 0.6V-5.5V output, and MPS' proprietary control topology that maintains efficiency across a wide load range. Placed directly adjacent to the FPGA bank with a small power inductor and low-ESR ceramic output capacitors, the QFN-12 PowerVFQFN package delivers a compact single-chip step-down stage from a 12V intermediate bus (within the 4.5V-24V input range). The 10A peak rating absorbs core-clock transient bursts, while integrated current limiting and thermal shutdown protect the rail during faults - eliminating the need for external power stages in most mid-density FPGA designs.
Recommended
Networking and Telecom Equipment
Switches, routers, and optical-line-card electronics distribute a 12V intermediate bus and derive multiple point-of-load rails. The MP8759GD-P suits this environment because its 4.5V-24V input tolerates bus transients up to the 26V rating, its low quiescent current and Ultrasonic Mode (USM) keep standby power low for always-on equipment, and its high-frequency synchronous operation shrinks inductor size for dense line-card layouts. Delivering 8A continuous in a QFN-12 footprint, one MP8759GD-P can power a processor, PHY, or memory group from a single chip with excellent load and line regulation. Fixed-frequency switching simplifies EMI filter design, an important consideration in telecom chassis where multiple converters share a common backplane bus.
Recommended
Industrial 24V Bus Systems
Factory automation, motor-control boards, and PLC I/O modules run from 24V buses, and downstream logic needs clean 5V or lower rails. The MP8759GD-P accepts up to 24V nominal input (26V absolute rating), allowing direct connection to a 24V industrial rail with appropriate transient protection, then stepping down to 0.6V-5.5V at up to 8A. Its -40C to +125C operating range meets industrial temperature requirements, and integrated protections (cycle-by-cycle current limit, thermal shutdown) improve field reliability. The high switching frequency keeps the magnetics small for compact DIN-rail module designs, while the synchronous architecture sustains high efficiency across light and heavy loads typical of duty-cycled industrial equipment.
Recommended
Storage and Server Peripheral Rails
SSD controllers, backplane peripherals, and server accessory cards derive 1.0V-3.3V rails from a 12V supply. The MP8759GD-P addresses these rails with 8A continuous output, fast loop response for bursty storage-controller loads, and a compact QFN-12 solution that fits tight board real estate near drive connectors. Its wide load-range efficiency, enabled by MPS' proprietary control and light-load Ultrasonic Mode, reduces total system power - a key metric in high-density storage arrays. The synchronous rectified topology avoids external Schottky diodes, improving efficiency and reliability at 8A, while current limiting protects shared 12V backplanes from downstream short circuits during hot-plug fault events.
Recommended
Consumer Display and Set-Top Electronics
Display panels, set-top boxes, and smart-home hubs use 12V/19V adapters and require efficient, low-noise internal rails of 5V or below at several amps. The MP8759GD-P's 4.5V-24V input covers both 12V and 19V adapter inputs, and its 8A capacity powers main logic rails of media SoCs. High-frequency synchronous operation and integrated switches minimize external component count and cost, while Ultrasonic Mode prevents audible switching-frequency artifacts in light-load standby - important in consumer A/V equipment. The compact 12-pin QFN package and small external magnetics let designers place the converter directly under the main board's power section without a dedicated heatsink in most enclosure airflow conditions.
Recommended
Battery-Powered and Portable High-Current Devices
Portable instruments and battery packs with 3S-5S lithium stacks (roughly 9V-21V) fall inside the MP8759GD-P's 4.5V-24V input window, and its low quiescent current plus Ultrasonic Mode (USM) extend standby battery life by minimizing light-load losses. Capable of 8A continuous, it can power motor drivers, wireless radios, and processing boards from a single converter, while the 10A peak rating absorbs radio transmit bursts and motor inrush. Synchronous rectification maintains efficiency across the discharge curve of the battery, and integrated thermal shutdown plus current limiting protect against stalled-motor or short-circuit events. The small QFN-12 solution size suits handheld and drone-style enclosures where board area is constrained.
Recommended
Recommended Products Summary
Engineering reference data for MP8759GD-P β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MP8759GD | MP8759GD-Z |
|---|---|---|---|
| Package | 12-PowerVFQFN (QFN-12) | QFN-12 - same | QFN-12 - same |
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Input Voltage Range | 4.5 V to 24 V | 4.5 V to 24 V | 4.5 V to 24 V |
| Output Voltage Range | 0.6 V to 5.5 V | 0.6 V to 5.5 V | 0.6 V to 5.5 V |
| Continuous Output Current | 8 A | 8 A | 8 A |
| Peak Output Current | 10 A | 10 A | 10 A |
| Special Modes | Ultrasonic Mode (USM), Low IQ | Ultrasonic Mode (USM), Low IQ | Ultrasonic Mode (USM), Low IQ |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C |
| Packing / Ordering Suffix | P (Tape and Reel) | Base ordering part | Z (green / lead-free designation) |
Key Differentiators
- Fully integrated 8A power stage (vs MP8759GD (family baseline))
- Ultrasonic Mode for light-load operation (vs MP8759GD-Z)
- Packing flexibility within one footprint (vs MP8759GD)
Design Notes
Minimize the high-frequency switching loop: place the input ceramic capacitors (typically 10uF + 0.1uF) within 2-3 mm of the IN and PGND pins, and route the SW node to the inductor as a short, wide trace. Solder the QFN-12 exposed pad to a solid ground pour with an array of thermal vias to the inner ground plane - this pad is both the electrical ground and the primary heat-removal path for the 8A load current. Follow the MPS MP8759 datasheet layout guideline figure, which shows a compact two-layer reference placement.
Estimated: at VIN=12V, VOUT=1.0V, IOUT=8A, and ~90% efficiency, dissipation is approximately 1W; with a typical QFN-12 theta_JA around 40 C/W on a recommended copper pour, junction rise is about 40C. Validate against the exact theta_JA in the MPS datasheet thermal characteristics table for your stackup. At 24V input and 5.5V output, dissipation grows considerably - reduce load targets or add copper area accordingly, and confirm the junction stays below the rating at maximum ambient temperature.
Do not exceed 24V continuous input - the 26V figure is the absolute rating, and industrial 24V buses can transient above that, so add input TVS clamping in harsh environments. Use the 0.6V feedback reference accurately: set the output with a resistor divider and keep the FB trace away from the SW node to avoid jitter. If Ultrasonic Mode is enabled, expect the switching frequency to drop at light loads - verify output ripple in your actual standby operating point rather than assuming fixed-frequency behavior.
Compliance Information
RoHS compliance and lead-free status per DigiKey/Mouser product listings (P suffix = tape and reel packing of MPS green-grade device). REACH, halogen-free, and conflict-minerals statements should be confirmed on the official MPS product page compliance documents.
