Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Monolithic Power Systems Inc. MPQ8632GLE-8-Z

Name: MPQ8632GLE-8-Z
Brand: Monolithic Power Systems Inc.
SKU: MPQ8632GLE-8-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MPQ8632GLE-8-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-PowerVFQFN

Datasheet:: MPQ8632GLE-8-Z.pdf

Description:: IC REG BUCK ADJ 8A 16QFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:24,823

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MPQ8632GLE-8-Z from Monolithic Power Systems is an 8A synchronous step-down DC/DC converter with 2.5V–18V input range, non-latch over-voltage protection, and Constant-On-Time (COT) control for ultrafast transient response. It integrates high- and low-side MOSFETs (R_DS(ON) = 28 mΩ / 15.3 mΩ), supports programmable 200kHz–1MHz switching frequency via external resistor, and delivers 0.611V–13V adjustable output in telecom power rails and server point-of-load applications.

For engineers reviewing the MPQ8632GLE-8-Z datasheet, MPQ8632GLE-8-Z pinout, MPQ8632GLE-8-Z application, or MPQ8632GLE-8-Z equivalent, this page provides verified package mapping, validated pin functions, confirmed thermal shutdown (150°C), exact OVP latch/non-latch mode per variant, and real-world soft-start timing control via external capacitor - all critical for stable 12V-to-1V/8A conversion in dense PCB layouts.

Technical Context

The MPQ8632GLE-8-Z implements adaptive COT control without external compensation, using VIN feed-forward through the FREQ pin to maintain near-constant switching frequency across input voltage variation. Its internal 4.8V VCC LDO powers gate drivers, while BST capacitor enables high-side MOSFET drive during each ON cycle.

It operates in PWM mode under continuous conduction (CCM) at full load and transitions to diode-emulation DCM with tri-state low-side driver at light load, reducing switching losses and improving efficiency below 1A. Protection includes non-latch OCP (valley current limit: 8–12A), OVP (130% V_FB threshold), UVP (50% V_FB threshold), and thermal shutdown with 25°C hysteresis.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	8A continuous - supports sustained 12V-to-1V conversion at full load without derating in 3×4mm QFN with 46°C/W θ_JA.
Input Voltage Range	2.5V–18V with 5V external bias; 4.5V–18V with internal VCC - enables direct 5V or 12V rail operation without auxiliary supply.
Switching Frequency	200kHz–1MHz, set by resistor on FREQ pin - allows trade-off between inductor size (e.g., 1µH at 500kHz) and efficiency (peak >92% at 5A).
Reference Voltage	0.611V ±3mV over –40°C to +125°C - ensures tight output regulation (±1%) across industrial temperature range.
OVP Mode	Non-latch - recovers automatically after fault removal, suitable for systems requiring uninterrupted operation after transient overvoltage.
Thermal Shutdown	150°C with 25°C hysteresis - prevents permanent damage during sustained overload or poor airflow; resumes operation at 125°C.
Power Good Signal	Open-drain PG with 2.5ms delay and 90%–94% V_FB high threshold - provides reliable system sequencing and fault detection without external logic.

Pinout & Package

MPQ8632GLE-8-Z uses a thermally enhanced 16-pin QFN package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin 1 is EN (top-left corner, marked by dot); pins 9 and 14 are IN; pins 10–13 are PGND; pins 15–16 are SW; pin 7 is VCC; pin 8 is BST; pin 5 is AGND; pin 6 is PG; pin 4 is SS; pin 3 is FB; pin 2 is FREQ.

Pin/Terminal	Circuit Role	Design Meaning
EN (Pin 1)	Enable control input	Digital logic-level input (1.3V threshold); pull-up to IN enables automatic startup; floating prohibited.
FREQ (Pin 2)	Frequency programming node	Resistor to IN sets ON-time; feed-forward stabilizes f_SW vs. VIN drift - no oscillator required.
FB (Pin 3)	Feedback sensing input	Monitors resistor divider output; sets V_OUT = 0.611V × (1 + R1/R2); also triggers OVP at 130% V_FB.
SS (Pin 4)	Soft-start timing node	External capacitor (e.g., 33nF) controls output ramp rate - prevents inrush into downstream capacitors.
AGND (Pin 5)	Analog reference ground	Separate from PGND to minimize noise coupling into feedback and control circuits.
PG (Pin 6)	Power-good open-drain output	Asserts high (with external 100kΩ pull-up) when V_OUT ≥ 90% of target - used for system enable sequencing.
VCC (Pin 7)	Internal 4.8V LDO output	Powers gate drivers and control logic; bypassed with ≥1µF X7R ceramic; disabled if 5V applied externally.
BST (Pin 8)	Bootstrap supply for high-side driver	Capacitor between BST and SW generates floating gate drive voltage - enables N-channel high-side MOSFET.
IN (Pins 9, 14)	Main power input	Accepts 2.5V–18V (with 5V bias) or 4.5V–18V (internal bias); requires low-ESR bulk decoupling near pins.
PGND (Pins 10–13)	Power ground return path	High-current return for both MOSFETs and inductor; must connect to thermal pad and use wide copper pours.
SW (Pins 15, 16)	Switch node output	Drives external inductor; experiences fast dV/dt edges - layout requires short, low-inductance traces to minimize EMI.

Key Features

Feature	Design Value
Adaptive COT control	Eliminates loop compensation components and delivers <10µs load transient recovery time at 8A step change.
Integrated MOSFETs	28 mΩ high-side + 15.3 mΩ low-side R_DS(ON) at 25°C - reduces conduction loss and eliminates external FET selection.
Programmable soft start	Capacitor on SS pin sets ramp time (e.g., 33nF ≈ 2ms) - prevents output overshoot and inrush into large output caps.
Pre-bias start-up	Allows safe start into pre-charged output rail - avoids reverse current flow and potential damage to downstream loads.
Non-latch OVP/OCP	Auto-recovery from overvoltage or overcurrent events - maintains system uptime without manual reset or host intervention.

Applications

Telecom Base Station Power

Server Point-of-Load Regulation

Use Scenario: Converting 12V intermediate bus to 1.0V/8A for FPGA or ASIC core supply in 4G/5G remote radio units.

IC Role / Device Role / Timing Role: Primary synchronous buck regulator with COT control ensuring sub-10µs transient response to burst-mode RF processing loads.

Use Value: Maintains <±1% output regulation during 5A–8A dynamic load steps, eliminating need for external compensation or additional output capacitance.

Use Scenario: Providing 0.85V/8A to CPU voltage regulator module (VRM) input stage in enterprise rack servers.

IC Role / Device Role / Timing Role: High-current intermediate buck stage preceding multiphase controller; delivers clean, low-noise input with PG sequencing.

Use Value: Reduces BOM count by integrating power switches and drivers, while thermal shutdown (150°C) protects against airflow failure in densely packed chassis.

Flat Panel Display Logic Supply

Distributed Telecom Power System

Use Scenario: Generating 3.3V/8A for display timing controller (TCON) and source driver ICs in 65-inch LCD panels.

IC Role / Device Role / Timing Role: Fixed-frequency (500kHz) buck converter synchronized to system clock via FREQ resistor; minimizes EMI in sensitive analog video paths.

Use Value: Achieves >93% peak efficiency at 3.3V/6A, lowering thermal load on display backplane and enabling fanless design.

Use Scenario: Local 5V-to-3.3V/8A conversion for packet-processing ASICs in modular telecom line cards with shared 5V backplane.

IC Role / Device Role / Timing Role: Standalone POL regulator with EN-controlled sequencing and PG confirmation - ensures deterministic power-up across distributed modules.

Use Value: Non-latch OVP allows recovery from brief 5.5V backplane surges without system reboot, meeting GR-1089 immunity requirements.

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
MPQ8632GLE-10-Z	10A rating, 19.6 mΩ/5.7 mΩ R_DS(ON), same 3×4mm footprint - higher current headroom but identical layout and control interface.	Supports future-proofing for 10A loads; requires revalidation of inductor saturation current and thermal margin.	Select if system load may scale beyond 8A or if derating for extended lifetime at 85°C ambient is required.
RTQ2132BGQW-Z	Richtek part: 8A, 2.7V–18V input, 350kHz–2.2MHz f_SW, different pinout (no BST pin), requires external bootstrap diode.	Lacks integrated BST diode; needs extra component and layout area; offers wider frequency range but no pre-bias start-up.	Choose only if higher f_SW (>1MHz) is mandatory and board space permits added discrete components.

Compared with MPQ8632GLE-10-Z, the -8-Z offers tighter thermal margin at 8A in compact 3×4mm QFN, while RTQ2132BGQW-Z trades integration for frequency flexibility - making the -8-Z optimal for cost-sensitive, space-constrained 8A POL designs requiring plug-and-play reliability.

Availability

MPQ8632GLE-8-Z is available at Aetrix Electronics and suitable for telecom base station power, server point-of-load regulation, and flat panel display logic supply requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for MPQ8632GLE-8-Z 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 over two decades of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The MPQ8632 family targets high-density, high-efficiency power conversion in telecom, computing, and industrial equipment - designed specifically to replace multi-component discrete buck solutions with fully integrated, thermally robust, and easy-to-layout alternatives.

FAQ

What is the minimum input voltage supported by MPQ8632GLE-8-Z?

The MPQ8632GLE-8-Z supports 2.5V minimum input when a 5V external bias is applied to the VCC pin, enabling operation from single-cell Li-ion or USB-PD sources. With internal VCC bias only, the minimum input is 4.5V - confirmed in the Recommended Operating Conditions table (page 7) and Absolute Maximum Ratings (page 6).

Does MPQ8632GLE-8-Z support pre-bias start-up?

Yes, MPQ8632GLE-8-Z supports pre-bias start-up, allowing safe turn-on when the output capacitor is already charged. This feature prevents reverse current flow through the low-side MOSFET and avoids potential damage to downstream circuitry - explicitly stated in the FEATURES section (page 1) and verified in application testing (Figure 16, page 16).

How is switching frequency set, and does it vary with input voltage?

Switching frequency is set by a resistor between FREQ and IN pins, with typical range 200kHz–1MHz. Due to VIN feed-forward architecture, frequency remains nearly constant across input voltage variation - confirmed by Equation (1) on page 20 and Typical Characteristics plots (page 14), where f_SW deviation is <±3% from 4.5V to 18V.

What is the thermal resistance θ_JA for the 3×4mm QFN package?

The junction-to-ambient thermal resistance (θ_JA) for MPQ8632GLE-8-Z in its 3mm×4mm QFN package is 46°C/W, measured on a standard 4-layer JEDEC PCB per JESD51-7 - specified in the Recommended Operating Conditions table (page 7) and used to calculate maximum power dissipation (2.7W at T_A = 25°C).

Can MPQ8632GLE-8-Z be used without an external bootstrap capacitor?

No - an external bootstrap capacitor between BST and SW pins is mandatory. The IC relies on this capacitor to generate the floating gate drive voltage for the high-side MOSFET. Omitting it prevents high-side switch operation and causes immediate functional failure - clearly required in PIN FUNCTIONS (page 11) and Typical Application schematic (page 2).

Is the power-good (PG) signal active-high or open-drain?

The PG signal is open-drain, requiring an external pull-up resistor (typically 100kΩ) to a valid logic voltage. It asserts low when V_OUT is outside 90%–120% of nominal, and floats high when in regulation - confirmed in PIN FUNCTIONS (page 11) and Electrical Characteristics (page 9), where I_OL = 12mA at V_OL = 600mV.

What is the over-voltage protection (OVP) threshold for MPQ8632GLE-8-Z?

The OVP threshold is 130% of V_FB (i.e., 130% × 0.611V = 0.794V), with ±3% tolerance, and operates in non-latch mode - meaning the device auto-recovers once the fault condition clears. This is documented in the Electrical Characteristics table (page 9) under "OVP Latch Threshold" for MPQ8632GLE-10 and confirmed as non-latch in the Ordering Information table (page 3) for MPQ8632GLE-8.

MPQ8632GLE-8-Z 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:: 8A

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)

MPQ8632GLE-8-Z FAQ

1.How can I place an order for MPQ8632GLE-8-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MPQ8632GLE-8-Z 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 MPQ8632GLE-8-Z reliable?

The price and inventory of MPQ8632GLE-8-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8632GLE-8-Z is usually 5 days.

3.What payment methods are accepted for MPQ8632GLE-8-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8632GLE-8-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MPQ8632GLE-8-Z?

MPQ8632GLE-8-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MPQ8632GLE-8-Z 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 MPQ8632GLE-8-Z?

For technical support, including MPQ8632GLE-8-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8632GLE-8-Z requirements.

6.How does Aetrix verify that MPQ8632GLE-8-Z is sourced from the original manufacturer or authorized distributors?

All MPQ8632GLE-8-Z 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 MPQ8632GLE-8-Z meets industry standards.

7.What is the process for return or replacement of MPQ8632GLE-8-Z?

All MPQ8632GLE-8-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8632GLE-8-Z, 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 MPQ8632GLE-8-Z part is unused and in its original packaging.

Return procedure for MPQ8632GLE-8-Z:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…