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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Monolithic Power Systems Inc. MPQ8636AGLE-10-P

Name: MPQ8636AGLE-10-P
Brand: Monolithic Power Systems Inc.
SKU: MPQ8636AGLE-10-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MPQ8636AGLE-10-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-PowerVFQFN

Datasheet:: MPQ8636AGLE-10-P.pdf

Description:: IC REG BUCK ADJ 10A 16QFN

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Product details

Overview

MPQ8636AGLE-10 from Monolithic Power Systems is a fully integrated, high-frequency synchronous step-down DC/DC converter delivering up to 10A output current from a 4.5V–18V input. It employs adaptive Constant-On-Time (COT) control for ultrafast transient response, integrates low-R_DS(ON) MOSFETs (19.6mΩ HS / 7.8mΩ LS), and provides programmable switching frequency (200kHz–1MHz) with feed-forward compensation. It is used in telecom base stations and server VRMs requiring compact, high-efficiency point-of-load regulation.

For engineers reviewing the MPQ8636AGLE-10 datasheet, MPQ8636AGLE-10 pinout, MPQ8636AGLE-10 application, or MPQ8636AGLE-10 equivalent, key selection criteria include its 0.611V–13V adjustable output, latch-off over-voltage protection at 130% V_REF, power-good signal with 2.5ms delay, pre-bias startup capability, and thermal shutdown at 150°C.

Technical Context

The MPQ8636AGLE-10 operates in continuous conduction mode (CCM) using adaptive COT control without an external oscillator-its on-time is determined by input voltage and the FREQ pin resistor per τ_ON = 6.1 × R_FREQ(kΩ) / (V_IN − 0.4). It features dual-stage over-current protection: cycle-by-cycle high-side peak limit (13–21.6A) and valley/negative current limiting on the low-side switch.

Its internal 5V VCC LDO powers gate drivers and control logic, while the bootstrap (BST) circuit sustains high-side drive. The FB pin serves both output voltage regulation (via external resistor divider) and over-voltage detection (latch-off at 130% V_REF), and the PG pin delivers open-drain status with 91% rising/80% falling thresholds referenced to V_REF.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5V to 18V - supports 5V, 12V, and 15V intermediate bus rails in telecom and server systems.
Output Current	10A continuous - enables single-chip solution for high-current POL applications without external MOSFETs.
Switching Frequency	200kHz to 1MHz - adjustable via external resistor on FREQ pin; maintains stability across input variation via feed-forward.
Reference Voltage	0.611V ±0.009V (−40°C to +125°C) - sets output accuracy; enables 0.611V–13V adjustment range with external resistive divider.
High-Side R_DS(ON)	19.6mΩ typical - reduces conduction loss at high load; critical for >90% efficiency at 10A output.
Low-Side R_DS(ON)	7.8mΩ typical - minimizes freewheeling loss during off-time; improves light-load efficiency in CCM operation.
Power-Good Threshold	Rising: 91% V_FB, Falling: 80% V_FB - provides reliable system sequencing with 2.5ms delay to avoid false asserts during transients.
Thermal Shutdown	150°C with 25°C hysteresis - protects die under sustained overload or poor PCB thermal design; auto-recovery after cooldown.

Pinout & Package

MPQ8636AGLE-10 is housed in a thermally enhanced 16-pin QFN package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad. The package supports high-power density layout with dedicated IN, PGND, and SW pads for low-inductance routing and efficient heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1 EN	Enable control input	Digital input with 1.3V threshold and 250mV hysteresis; supports automatic startup via resistor divider and noise filtering with 10nF capacitor.
2 FREQ	Frequency programming node	Connects to IN via resistor to set ON-time; enables line feed-forward for stable switching frequency across input voltage range.
3 FB	Feedback sensing input	Monitors output via resistor divider; sets regulation point and triggers OVP/UVP (latch-off at 130%/50% V_REF).
4 SS	Soft-start timing node	Charged by 20μA internal current source; controls output ramp rate; minimum 4.7nF required for >330μF output capacitance.
5 AGND	Analog ground reference	Separate ground for control circuitry; must be connected to PGND at single point near IC to minimize noise coupling.
6 PG	Open-drain power-good output	Indicates regulated output within ±9% window (91%–100% V_FB) after 2.5ms delay; requires external pull-up to ≤5.5V.
7 VCC	Internal 5V LDO output	Powers gate drivers and bias circuits; requires ≥1μF X7R/X5R ceramic decoupling capacitor placed adjacent to pin.
8 BST	Bootstrap supply connection	Forms floating gate drive for high-side MOSFET; requires ceramic capacitor (typically 0.1μF) between BST and SW pins.
9,14 IN	Main power input	Accepts 4.5V–18V; requires low-ESR bulk and ceramic input capacitors; routed with wide traces and multiple vias.
10,11,12,13 PGND	Power ground return	Low-impedance return path for high di/dt currents; must be solid copper plane connected directly to thermal pad.
15,16 SW	Switch node output	Drives external inductor; experiences high dv/dt and di/dt; requires shortest possible trace to inductor and BST capacitor.

Key Features

Feature	Design Value
Adaptive COT control	Eliminates external compensation network; achieves <10μs load transient recovery with no phase-margin tuning required.
Pre-bias startup	Enables monotonic output ramp even when output is pre-charged; prevents reverse current flow into upstream supplies.
Three-level over-current protection	Combines high-side peak (13–21.6A), low-side valley (9.5–12.5A), and negative current (−6.5 to −4.5A) limits for robust fault handling.
Programmable soft-start	Adjustable ramp time via external capacitor; avoids inrush current and prevents current-limit tripping during startup.
Latch-off over-voltage protection	Shuts down permanently at FB ≥130% V_REF; requires power cycle or EN toggle to resume-prevents damage to downstream loads.
Integrated 5V VCC LDO	Self-powered gate driver supply eliminates need for external bias rail; includes UVLO (4.0V rising, 3.5V falling) for safe startup.

Applications

Telecom Base Stations

Servers & Data Center VRMs

Use Scenario: Point-of-load conversion for FPGA, ASIC, and memory rails in macro/micro base station RF units.

IC Role / Device Role / Timing Role: Primary buck regulator delivering 1.2V/10A to baseband processors with fast load-step response to handle burst-mode transmission.

Use Value: Adaptive COT ensures <10μs recovery from 5A–10A steps, maintaining signal integrity and reducing output capacitance by 30% vs. voltage-mode controllers.

Use Scenario: Core voltage regulation for Intel Xeon or AMD EPYC CPUs in 1U/2U rack servers.

IC Role / Device Role / Timing Role: High-current POL converter operating from 12V intermediate bus; synchronized via external clock for EMI reduction.

Use Value: Integrated 19.6mΩ/7.8mΩ MOSFETs achieve >92% efficiency at 10A/1.0V, reducing thermal load and enabling fanless designs in dense compute nodes.

Flat-Panel Display Power

Distributed Power Systems

Use Scenario: Backlight LED driver bias supply and TCON (timing controller) rail in 4K LCD panels.

IC Role / Device Role / Timing Role: Secondary buck supplying 3.3V/5A to display timing and interface ICs; powered from main 12V board supply.

Use Value: Pre-bias startup prevents output collapse when panel is hot-plugged; PG signal sequences backlight enable after stable 3.3V is confirmed.

Use Scenario: Modular power delivery in industrial PLCs and edge AI gateways with distributed 5V/3.3V rails.

IC Role / Device Role / Timing Role: Isolated secondary-side regulator converting 12V from isolated DC/DC to 1.8V/10A for SoC cores.

Use Value: QFN-16 (3×4mm) footprint enables compact layout in space-constrained modules; thermal pad supports >2.7W dissipation without heatsink.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
RTQ2132BGQW	Higher 12A rating, 2.7V–18V input, but uses voltage-mode control with external compensation; lacks pre-bias startup.	Better suited for fixed-output, low-noise analog rails where loop tuning is acceptable; not ideal for hot-swap or FPGA core rails.	Select RTQ2132BGQW only if higher current headroom and tighter output voltage tolerance (±0.5%) are prioritized over transient speed and startup flexibility.
TPS546B24RVFT	Supports PMBus interface, 4.5V–18V input, 10A output, but requires external MOSFETs; offers digital telemetry and margining.	Targeted at systems needing real-time monitoring (VOUT, IOUT, temperature) and dynamic voltage scaling-not suitable for cost-sensitive analog-only designs.	Choose TPS546B24RVFT when firmware-controlled configuration, fault logging, or multi-rail coordination is required; MPQ8636AGLE-10 wins for simplicity and BOM cost.

Compared with RTQ2132BGQW and TPS546B24RVFT, the MPQ8636AGLE-10 delivers superior transient response and plug-and-play integration for analog-intensive POL applications, trading off digital configurability and absolute current margin for lower component count, smaller footprint, and faster time-to-stable-output.

Availability

MPQ8636AGLE-10 is available at Aetrix Electronics and suitable for telecom infrastructure, server power delivery, and flat-panel display systems requiring stable component supply, long-term production continuity, and RoHS-compliant packaging.

Supply support for MPQ8636AGLE-10 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ8636A series targets high-density, high-efficiency DC/DC conversion in space-constrained applications such as networking equipment and computing platforms, emphasizing integration, thermal performance, and ease of use without external compensation.

FAQ

What is the minimum recommended output capacitance for stable operation?

The MPQ8636AGLE-10 requires ≥330μF total output capacitance for stable CCM operation with ceramic or POSCAP outputs. Using less than this value may cause subharmonic oscillation or excessive output ripple, especially at light loads. For ceramic-only designs, add external ramp compensation (R4/C4 network) per Equation 4 in the datasheet to ensure slope compensation adequacy.

Can the MPQ8636AGLE-10 operate with an input voltage below 4.5V?

No-the absolute minimum operating input voltage is 4.5V per the Recommended Operating Conditions table. Below this, the internal VCC LDO cannot sustain regulation, causing erratic behavior or failure to start. The under-voltage lockout (UVLO) threshold is fixed at 4.1V (rising), and the device remains disabled until VIN exceeds that level and stabilizes above 4.5V.

How does the FREQ pin resistor affect switching frequency accuracy?

The FREQ pin resistor sets the one-shot ON-time (τ_ON), which determines switching frequency in CCM. With feed-forward from VIN, frequency drift is minimized: for example, at R_FREQ = 453kΩ, τ_ON = 250ns at V_IN = 12V, yielding ~600kHz. Frequency variation across VIN (4.5V–18V) is typically <±3% due to line feed-forward compensation.

Is the PG pin compatible with 3.3V logic systems?

Yes-the PG pin is open-drain and rated for ≤5.5V pull-up. When used with a 3.3V pull-up resistor (e.g., 100kΩ), it safely interfaces with 3.3V microcontrollers or CPLDs. The PG output pulls low when V_FB <80% V_REF or >120% V_REF, and goes high (open) only after V_FB ≥91% V_REF and 2.5ms delay elapses.

What thermal derating applies above 25°C ambient?

Using θ_JA = 46°C/W, maximum continuous power dissipation drops linearly: at T_A = 70°C, P_D(MAX) = (150°C − 70°C)/46 ≈ 1.74W. Since typical losses at 10A/12V input are ~1.2W, full 10A output remains viable up to ~85°C ambient with adequate PCB copper area (2oz, 2-in² thermal pad).

Does the MPQ8636AGLE-10 support forced PWM or DCM modes?

No-it operates exclusively in continuous conduction mode (CCM) across all load conditions. Even at light loads, inductor current goes negative rather than discontinuing, eliminating audible noise and simplifying EMI filter design. This is inherent to its adaptive COT architecture and lack of diode emulation or pulse-skipping logic.

How is the soft-start time calculated for a given capacitor value?

Soft-start time t_SS (ms) = C_SS (nF) × 0.611V / 20μA. For example, a 10nF capacitor yields t_SS ≈ 0.306ms. To avoid current-limit tripping during startup into large output caps (>330μF), use ≥4.7nF; values >100nF extend ramp time beyond 3ms and improve inrush control.

MPQ8636AGLE-10-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 16-PowerVFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 4.5V

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 0.611V

Voltage - Output (Max):: 13V

Current - Output:: 10A

Frequency - Switching:: 200kHz ~ 1MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (3x4)

MPQ8636AGLE-10-P FAQ

1.How can I place an order for MPQ8636AGLE-10-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ8636AGLE-10-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MPQ8636AGLE-10-P reliable?

The price and inventory of MPQ8636AGLE-10-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8636AGLE-10-P is usually 5 days.

3.What payment methods are accepted for MPQ8636AGLE-10-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8636AGLE-10-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ8636AGLE-10-P?

MPQ8636AGLE-10-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ8636AGLE-10-P order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MPQ8636AGLE-10-P?

For technical support, including MPQ8636AGLE-10-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8636AGLE-10-P requirements.

6.How does Aetrix verify that MPQ8636AGLE-10-P is sourced from the original manufacturer or authorized distributors?

All MPQ8636AGLE-10-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPQ8636AGLE-10-P meets industry standards.

7.What is the process for return or replacement of MPQ8636AGLE-10-P?

All MPQ8636AGLE-10-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8636AGLE-10-P, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MPQ8636AGLE-10-P part is unused and in its original packaging.

Return procedure for MPQ8636AGLE-10-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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