My Inquiry
My Account
Monolithic Power Systems Inc. MPQ8633AGLE-Z
- Part No.:
- MPQ8633AGLE-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 21-PowerVFQFN
- Datasheet:
-
MPQ8633AGLE-Z.pdf
- Description:
- IC REG BUCK ADJ 12A 21QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ8633AGLE-Z from Monolithic Power Systems is a fully integrated 16V, 12A synchronous step-down converter with adjustable current limit (16A max), programmable switching frequency (600/800/1000 kHz), and voltage tracking capability. It employs constant-on-time (COT) control for ultrafast transient response and supports differential remote sensing for precise load regulation in telecom power supplies and server point-of-load applications.
For engineers reviewing the MPQ8633AGLE-Z datasheet, MPQ8633AGLE-Z pinout, MPQ8633AGLE-Z application, or MPQ8633AGLE-Z equivalent, key selection criteria include its QFN-21 (3mm × 4mm) package, 0.6V–5.5V adjustable output, 0.5% reference voltage accuracy over 0°C to +70°C, and integrated protection features including non-latch OCP, OVP, UVP, and thermal shutdown.
Technical Context
The MPQ8633AGLE-Z uses an adaptive internal ramp-compensated COT architecture that maintains stability across input (4V–16V) and output (0.6V–5.5V) ranges without requiring external compensation. Its valley-current sensing via CS pin enables accurate cycle-by-cycle overcurrent protection with programmable trip threshold (1.15–1.25 V).
Switching operation supports both forced continuous conduction mode (CCM) and pulse-skip mode selected via MODE pin resistor configuration; dead-time control prevents shoot-through between integrated 13.3 mΩ high-side and 3.8 mΩ low-side MOSFETs, while PGOOD clamping at ~0.7V during VIN failure ensures reliable system-level fault signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 16V (internal bias) or 2.7V to 16V (external 3.3V VCC bias) |
| Output Current | 12A continuous; supports up to 18A peak inductor current |
| Switching Frequency | Selectable 600/800/1000 kHz via MODE pin resistor; fixed regardless of VIN/VOUT |
| Reference Voltage | 0.6V ±0.5% over 0°C to +70°C; ±1% over –40°C to +125°C |
| Current Limit Threshold | Programmable 1.15–1.25V on CS pin; corresponds to 16A max output current |
| RDS(ON) | 13.3 mΩ (HS), 3.8 mΩ (LS) at 25°C - enables high efficiency at full load |
| Soft-Start Time | 1ms minimum; extended by capacitor on TRK/REF pin (e.g., 1nF = 1ms typ) |
| Thermal Shutdown | 160°C with 30°C hysteresis - protects against sustained overload or poor PCB thermal design |
Pinout & Package
MPQ8633AGLE-Z is housed in a thermally enhanced QFN-21 package (3mm × 4mm, 0.5mm pitch) with 7 exposed PGND pads (pins 10–18) for low-impedance thermal and power return paths. The package supports JEDEC-standard reflow and meets RoHS, halogen-free, and lead-free requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST (Pin 1) | Bootstrap supply | Drives high-side gate via external BST–SW capacitor; enables 100% duty cycle capability |
| CS (Pin 3) | Current sense input | Accepts mirrored valley current signal; sets OCP threshold via RCS resistor to AGND |
| MODE (Pin 4) | Operating mode select | Configures CCM/pulse-skip and switching frequency (600/800/1000 kHz) via resistor to AGND/VCC |
| TRK/REF (Pin 5) | Tracking/reference input | Sets output voltage via external analog signal (0.3–1.4V); overrides soft-start and enables voltage sequencing |
| RGND (Pin 6) | Remote sense negative | Differential feedback reference; connects directly to load ground to reject PCB IR drop |
| FB (Pin 7) | Feedback input | Monitors output via resistor divider; precision 0.6V reference enables accurate regulation down to 0.6V |
| EN (Pin 8) | Enable control | Active-high logic input; supports pre-bias start-up and controlled power sequencing |
| PGOOD (Pin 9) | Power good indicator | Open-drain output; asserts high when FB is within 89.5–95.5% of VREF; clamps to ~0.7V during VIN loss |
| VIN (Pins 10, 21) | Main input supply | Connects to bulk input capacitors; dual pins reduce trace resistance and improve current sharing |
| PGND (Pins 11–18) | Power ground | Primary return path for high-current SW node and output inductor; must be solid copper pour under package |
| VCC (Pin 19) | Internal LDO output | 3.0V ±4% regulated supply for control circuitry; requires ≥1µF ceramic decoupling |
| SW (Pin 20) | Switch node | Connects to inductor and BST capacitor; high dv/dt node requiring tight layout and minimal loop area |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | RGND/FB pair rejects up to 50mV PCB voltage drop, enabling ±1% output regulation at point-of-load |
| Adaptive COT control | Eliminates need for external compensation components while maintaining stability with zero-ESR MLCCs |
| Programmable current limit | Adjustable 12–16A range via single RCS resistor - simplifies design for varying load requirements |
| Voltage tracking & sequencing | TRK/REF pin accepts external ramp or reference signal to coordinate startup with other rails (e.g., core vs I/O) |
| Pre-bias start-up | Enables monotonic ramp into pre-charged outputs without reverse current or overshoot |
| Output discharge | Integrated 80Ω discharge FET activates on EN deassertion - discharges output to <10% VREF within milliseconds |
Applications
| Telecom Power Supply | Server Point-of-Load |
|---|---|
Use Scenario: Intermediate bus conversion in 48V telecom systems powering ASICs and FPGAs. IC Role / Device Role / Timing Role: Primary 12A buck regulator delivering stable 1.2V/1.8V/3.3V rails with tight load regulation and fast transient response. Use Value: Differential sensing and COT control maintain <±1% output deviation during 5A/μs load steps typical in packet-processing workloads. | Use Scenario: Core voltage regulation for multi-core CPUs and GPUs in cloud servers. IC Role / Device Role / Timing Role: High-current POL converter with voltage tracking to sequence CPU core and I/O rail startup. Use Value: TRK/REF pin synchronizes ramp with companion regulators; 0.5% reference accuracy ensures compliance with DDR5 VDDQ tolerance limits. |
| Base Station RF Module | High-End Gaming GPU Power |
Use Scenario: Powering GaN PA bias rails and FPGA control logic in 5G massive MIMO radios. IC Role / Device Role / Timing Role: Dual-rail generator using one MPQ8633AGLE-Z for 5V analog supply and another for 1.0V digital core. Use Value: Programmable frequency avoids noise coupling into sensitive RF bands; PGOOD clamping ensures clean reset during brownout. | Use Scenario: Dynamic voltage scaling for GPU cores under variable compute loads in gaming laptops and desktops. IC Role / Device Role / Timing Role: Adaptive buck converter operating in pulse-skip mode at idle and forced CCM under full load. Use Value: Efficiency >92% at 1A and >94% at 10A enables thermal headroom for sustained boost clocks without throttling. |
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 |
|---|---|---|---|
| MPQ8632AGLE-Z | 8A rated (vs 12A); identical pinout, package, and feature set except lower current capability | Suitable for lower-power PoL where thermal margin is constrained or cost reduction is prioritized | Select when full 12A capability is unnecessary and board space or BOM cost must be minimized |
| TPS546D24A | 16A rating; PMBus interface, digital control, and higher integration (e.g., telemetry, margining) | Required for systems needing real-time voltage/current monitoring, dynamic margining, or firmware-based configuration | Choose only if digital control, telemetry, or advanced fault logging are mandatory system requirements |
Compared with MPQ8632AGLE-Z, the MPQ8633AGLE-Z delivers 50% higher output current in the same footprint and thermal profile; versus TPS546D24A, it offers analog simplicity, lower BOM count, and faster transient response but lacks digital configurability and telemetry.
Availability
MPQ8633AGLE-Z is available at Aetrix Electronics and suitable for telecom infrastructure, server power delivery, and high-performance computing applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MPQ8633AGLE-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MPQ8633A belongs to MPS's high-current DC/DC converter product line, engineered specifically for demanding point-of-load applications in datacenter, networking, and communications equipment where efficiency, thermal performance, and reliability are critical.
FAQ
What is the minimum recommended output capacitance for stable operation?
The MPQ8633AGLE-Z is stable with zero-ESR ceramic capacitors. Minimum recommended output capacitance is 220µF using X5R/X7R MLCCs; total effective capacitance should exceed 470µF for 12A loads to limit output ripple below 10mVpp under full-step transient conditions. Layout must minimize ESL by placing capacitors close to SW and PGND pins.
How does the TRK/REF pin function during power-up sequencing?
During power-up, TRK/REF must reach ≥600mV before the output begins ramping; once active, the FB pin tracks TRK/REF voltage linearly (e.g., 0.6V input → 0.6V output). This enables precise voltage ramp coordination with upstream supplies, such as tracking a 1.8V master rail to generate a 0.9V slave rail with matched slew rate.
Can the MPQ8633AGLE-Z operate with only external 3.3V VCC bias and no internal LDO activation?
Yes - when an external 3.3V supply is applied to VCC pin, the internal 3V LDO is disabled. This reduces quiescent current and improves efficiency at light loads. The external VCC must remain within 3.12–3.6V and be decoupled with ≥1µF ceramic capacitor; all control functions remain fully operational.
What is the purpose of the RGND pin and how should it be routed?
RGND provides the dedicated reference for differential feedback sensing. It must be connected directly to the load-side ground plane (not the power ground pour) using a short, low-impedance trace. Routing RGND separately from PGND eliminates PCB IR drop error, enabling ±0.5% output accuracy even with 100mΩ trace resistance between converter and load.
Does the device support automatic transition between pulse-skip and forced CCM modes?
No - mode selection is static and determined solely by the resistor value on the MODE pin. Pulse-skip and forced CCM are mutually exclusive configurations; automatic transition is not supported. To enable dynamic mode switching, an external GPIO-controlled resistor network or digital potentiometer would be required.
What is the maximum allowable voltage on the BST pin relative to SW?
The absolute maximum BST-to-SW voltage is 22.3V DC. During normal operation, BST voltage is typically VIN + 3V to 5V due to bootstrap capacitor charging. Exceeding 22.3V risks permanent damage to the high-side gate driver; use a 25V-rated ceramic capacitor (e.g., 0.1µF X7R) between BST and SW to ensure margin.
How does the PGOOD pin behave when input voltage collapses?
When VIN drops below UVLO threshold (~2.1V), the internal charge pump fails and PGOOD is actively clamped to ~0.7V (not open-drain high-impedance). This provides unambiguous low-level signaling to system supervisors, eliminating need for external pull-down resistors and ensuring deterministic reset behavior during brownout events.
MPQ8633AGLE-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 21-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):
- 2.7V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 12A
- Frequency - Switching:
- 600kHz ~ 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 21-QFN (3x4)
MPQ8633AGLE-Z FAQ
1.How can I place an order for MPQ8633AGLE-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8633AGLE-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 MPQ8633AGLE-Z reliable?
The price and inventory of MPQ8633AGLE-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8633AGLE-Z is usually 5 days.
3.What payment methods are accepted for MPQ8633AGLE-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8633AGLE-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8633AGLE-Z?
MPQ8633AGLE-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8633AGLE-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 MPQ8633AGLE-Z?
For technical support, including MPQ8633AGLE-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8633AGLE-Z requirements.
6.How does Aetrix verify that MPQ8633AGLE-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8633AGLE-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 MPQ8633AGLE-Z meets industry standards.
7.What is the process for return or replacement of MPQ8633AGLE-Z?
All MPQ8633AGLE-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8633AGLE-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 MPQ8633AGLE-Z part is unused and in its original packaging.
Return procedure for MPQ8633AGLE-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ8633AGLE-Z Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
