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

Monolithic Power Systems Inc. MP9184GL-Z

Name: MP9184GL-Z
Brand: Monolithic Power Systems Inc.
SKU: MP9184GL-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP9184GL-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 22-PowerVFQFN

Datasheet:: MP9184GL-Z.pdf

Description:: IC REG BUCK ADJ 17A 22QFN

Quantity:: RFQ Add To RFQ list

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Inventory:1,150

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Product details

Overview

MP9184GL-Z from Monolithic Power Systems is a 600kHz fixed-frequency, current-mode synchronous boost converter with 3V–20V input range, integrated 10mΩ low-side power FET, and >17A switch-current limit. It delivers up to 97.5% efficiency in USB Type-C and Thunderbolt interface power delivery applications requiring compact high-power DC-DC conversion.

For engineers reviewing the MP9184GL-Z datasheet, MP9184GL-Z pinout, MP9184GL-Z application, or MP9184GL-Z equivalent, key selection criteria include external/optional internal current-sensing configuration, programmable UVLO hysteresis, thermal shutdown at 150°C, and QFN-22 (3mm × 4mm) package compatibility with high-density PCB layouts.

Technical Context

The MP9184GL-Z implements constant-frequency peak-current mode control with dual current-sensing modes: MODE pin grounded for internal sensing or floating for external 4mΩ resistor-based average-current limiting. Its error amplifier features 300 V/V gain and 160 μA/V transconductance, with COMP pin supporting external RC compensation for loop stability across load and input variations.

It integrates a 5V BST-powered SDR gate driver for synchronous rectification, supports soft-start via external capacitor on SS pin, and uses VDD bootstrapped from OUT when VOUT > VIN-enabling stable operation down to 3V input while maintaining low R_ON and high efficiency.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	600 kHz fixed frequency; enables compact magnetics and predictable EMI profile.
Input Voltage Range	3V to 20V; supports single-cell Li-ion to multi-cell battery and wide industrial input rails.
Switch Current Limit	>17 A peak; sustains high-output-power boost (e.g., 12V/2.1A from 3V) without cycle-by-cycle foldback.
Efficiency	Up to 97.5%; achieved via 10mΩ internal low-side FET and synchronous rectifier driver (SDR).
Feedback Reference	1.225 V ±15 mV; sets precise output voltage via resistor divider on FB pin.
Thermal Shutdown	150°C with 25°C hysteresis; prevents permanent damage during sustained overload or poor heatsinking.
Shutdown Current	<1 µA; minimizes battery drain in always-on portable systems during disable.

Pinout & Package

MP9184GL-Z is housed in a thermally enhanced 22-pin QFN package measuring 3mm × 4mm with exposed thermal pad (PGND-connected). The package supports high-power dissipation (θ_JA = 48°C/W) and automated reflow assembly.

Pin/Terminal	Circuit Role	Design Meaning
BST (Pin 1)	Bootstrap supply	Powers SDR gate driver; requires external 0.1µF ceramic capacitor to SW.
SDR (Pin 2)	Synchronous driver output	5V-complementary gate signal for external N-channel MOSFET rectifier.
OUT (Pin 3)	Output voltage sampling	Provides feedback sample and charges BST capacitor; connects to output rail.
EN (Pin 4)	Enable control	Active-high logic input; 1.33V turn-on threshold enables micro-power startup and UVLO programming.
MODE (Pin 5)	Current-sense mode select	GND = internal sensing; float = external resistor (e.g., 4mΩ) for average-current protection.
SENSE (Pin 6)	External current sense input	Measures voltage drop across external sense resistor; triggers hiccup mode at 54mV.
SW (Pins 7,8,19,20,21)	Power switch node	Drain of internal 10mΩ N-FET; connects to inductor and external rectifier.
PGND (Pins 9,10,17,18,22)	Power ground	High-current return path for SW, IN, and SDR; must be low-inductance plane.
IN (Pin 11)	Main input supply	3V–20V input; requires local 2×22µF ceramic bypass capacitors.
VDD (Pin 12)	Internal bias supply	Powered from IN at startup, then from OUT; decoupled with ≥2.2µF ceramic cap.
COMP (Pin 13)	Error amplifier output	Connects external RC network to set loop dynamics and transient response.
FB (Pin 14)	Feedback input	Compares output voltage divider against 1.225V reference for regulation.
SS (Pin 15)	Soft-start control	Charged by 7µA current source; controls ramp rate of COMP voltage and switching frequency.
AGND (Pin 16)	Analog ground	Reference for FB, COMP, and SENSE; isolated from PGND to reduce noise coupling.

Key Features

Feature	Design Value
Optional current-sensing topology	MODE pin selects internal (GND) or external (floating) sensing-enables design flexibility for precision vs. cost-sensitive applications.
Programmable UVLO with hysteresis	EN pin sinks 4.5µA to set custom VIN start-up threshold and falling-edge hysteresis-supports brown-out resilience in battery systems.
External soft-start and compensation	SS and COMP pins allow independent tuning of startup inrush and closed-loop stability-critical for dynamic load applications like USB PD.
Synchronous rectifier driver (SDR)	5V gate drive with 20ns rise/30ns fall time powers low-V_GS(th) N-MOSFET-replaces Schottky diode to improve efficiency at high I_OUT.
Thermal shutdown with hysteresis	150°C trip + 25°C hysteresis ensures safe recovery after overload without oscillation-protects PCB and system-level reliability.

Applications

USB Type-C Power Delivery

Thunderbolt Interface Power Rail

Use Scenario: Provides regulated 12V/2.1A output from 3V–5V USB-C source to power high-speed data interface circuitry.

IC Role / Device Role / Timing Role: Primary synchronous boost controller managing input-to-output voltage translation and current limiting.

Use Value: Enables compact, high-efficiency power stage meeting USB PD 3.0 specification with <1µA shutdown current for standby compliance.

Use Scenario: Supplies stable 12V rail to Thunderbolt 3/4 host controllers and retimers in ultra-thin notebooks.

IC Role / Device Role / Timing Role: High-current boost regulator with fast transient response to handle burst-mode data link power demands.

Use Value: Delivers >17A peak switch current and 97.5% efficiency to sustain full-bandwidth Thunderbolt operation without thermal throttling.

Portable Power Banks

Bluetooth Audio Amplifier Supply

Use Scenario: Steps up single-cell Li-ion (3.0–4.2V) to 12V for USB-A QC output ports in multi-port power banks.

IC Role / Device Role / Timing Role: Main boost converter with programmable UVLO to extend usable battery range down to 3V cutoff.

Use Value: Supports >17A current limit and external current-sense resistor for accurate overcurrent protection during simultaneous port charging.

Use Scenario: Generates clean 12V supply for Class-D audio amplifiers in premium wireless headphones and speakers.

IC Role / Device Role / Timing Role: Low-noise, high-efficiency boost stage with AGND/PGND separation to minimize analog signal interference.

Use Value: Achieves <1µA shutdown current and pulse-skipping light-load mode-extending battery life while maintaining low output ripple.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous boost converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP9184AGL-Z	Direct replacement with improved current-sense accuracy, tighter V_FB tolerance (±0.5%), and extended -40°C to +125°C operating range.	Required for new designs due to MP9184GL-Z end-of-life status; supports same QFN-22 footprint and pinout.	Select MP9184AGL-Z for production continuity, especially where thermal margin or long-term supply assurance is critical.
RTQ2132BGQW	4.5V–36V input, 12A peak, 500kHz switching; lacks external current-sense option and SDR driver-requires external MOSFET gate control.	Suitable for higher-input industrial applications but not drop-in for USB-C or Thunderbolt due to different sensing architecture and pin compatibility.	Consider only if input exceeds 20V or if internal current sensing suffices; verify layout changes for EN/SS/COMP routing differences.

Compared with MP9184GL-Z, MP9184AGL-Z offers guaranteed production availability and tighter parametric specs, while RTQ2132BGQW trades pin compatibility for wider input range-making the former essential for legacy design refresh and the latter viable only for greenfield high-VIN systems.

Availability

MP9184GL-Z is available at Aetrix Electronics and suitable for USB Type-C power delivery, Thunderbolt interface power rails, and portable power bank designs requiring stable component supply during transition to MP9184AGL-Z.

Supply support for MP9184GL-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 core expertise in DC-DC conversion, motor drivers, and LED lighting controllers.

The MP9184 product line targets high-power portable and interface power applications, delivering wide-input, high-efficiency synchronous boost solutions in space-constrained QFN packages for USB, Thunderbolt, and battery-powered systems.

FAQ

What is the recommended external current-sense resistor value for 15A average current limit?

For 15A average current limit, use R_SENSE = V_CL/I_CL = 54mV / 15A = 3.6 mΩ. A standard 4mΩ, 1% tolerance, 1W chip resistor meets this requirement and aligns with typical application circuits using 4mΩ sense resistors. Ensure Kelvin connection to SENSE and IN pins to avoid trace resistance errors.

Can MP9184GL-Z operate with input voltage below 3V?

No. Absolute minimum operating input voltage is 3V per datasheet specifications. Below 3V, UVLO prevents startup, and internal bias generation fails. The 2.68V UVLO rising threshold ensures reliable operation only above 3V; attempting sub-3V operation risks undefined behavior and failure to regulate.

How does the SDR driver behave when output voltage is 5V?

At 5V output, BST voltage may fall below 4.5V due to insufficient bootstrap charge, risking SDR driver dropout. The datasheet recommends adding a Schottky diode from VOUT to BST to maintain adequate gate drive. Without it, SDR output degrades, increasing conduction loss and reducing efficiency by up to 3%.

Is the MP9184GL-Z RoHS and lead-free compliant?

Yes. MP9184GL-Z is lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status on its official Quality Assurance page, and the device carries no exemptions-suitable for consumer, medical, and industrial applications requiring full environmental compliance.

What is the maximum allowable output voltage when input is 20V?

Maximum output voltage is 22V, as specified in Recommended Operating Conditions. Exceeding 22V violates absolute maximum ratings for OUT pin (–0.3V to +24V), risking latch-up or permanent damage. For 20V input, practical output is limited to ≤22V to maintain safety margin and ensure reliable operation under transients.

Does MP9184GL-Z support forced PWM mode at light load?

No. MP9184GL-Z uses automatic pulse-skipping and frequency foldback in light-load conditions-not forced PWM. It transitions to PSM (pulse-skipping mode) when load drops below ~100mA, reducing switching frequency to minimize quiescent current and maximize battery runtime.

How is thermal shutdown triggered and recovered?

Thermal shutdown activates at 150°C junction temperature and holds off until die cools to 125°C (25°C hysteresis). Recovery is automatic with no external reset required. During hiccup mode caused by overcurrent, thermal shutdown remains inactive unless actual die temperature reaches 150°C-ensuring independent fault handling.

MP9184GL-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 22-PowerVFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 3V

Voltage - Input (Max):: 20V

Voltage - Output (Min/Fixed):: 3V

Voltage - Output (Max):: 22V

Current - Output:: 17A

Frequency - Switching:: 600kHz

Synchronous Rectifier:: No

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 22-QFN (3x4)

MP9184GL-Z FAQ

1.How can I place an order for MP9184GL-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP9184GL-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 MP9184GL-Z reliable?

The price and inventory of MP9184GL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP9184GL-Z is usually 5 days.

3.What payment methods are accepted for MP9184GL-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP9184GL-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP9184GL-Z?

MP9184GL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP9184GL-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 MP9184GL-Z?

For technical support, including MP9184GL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP9184GL-Z requirements.

6.How does Aetrix verify that MP9184GL-Z is sourced from the original manufacturer or authorized distributors?

All MP9184GL-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 MP9184GL-Z meets industry standards.

7.What is the process for return or replacement of MP9184GL-Z?

All MP9184GL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP9184GL-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 MP9184GL-Z part is unused and in its original packaging.

Return procedure for MP9184GL-Z:

1.Submit a request within 90 days.

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

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