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

Monolithic Power Systems Inc. MP9184AGL-Z

Name: MP9184AGL-Z
Brand: Monolithic Power Systems Inc.
SKU: MP9184AGL-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP9184AGL-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 22-PowerVFQFN

Datasheet:: MP9184AGL-Z.pdf

Description:: IC REG BOOST ADJ 19A 22QFN

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Product details

Overview

MP9184AGL-Z from Monolithic Power Systems is a 600kHz fixed-frequency synchronous boost converter with 3V–20V input range, 19A internal switch current limit, integrated 10mΩ low-side MOSFET, and input disconnect functionality for battery protection and output short-circuit isolation. It delivers up to 22V output in POS terminals, power banks, and Thunderbolt interface power rails.

For engineers reviewing the MP9184AGL-Z datasheet, MP9184AGL-Z pinout, MP9184AGL-Z application, or MP9184AGL-Z equivalent, this device supports programmable input average current limiting, external soft-start and compensation, thermal shutdown at 150°C, and UVLO with adjustable hysteresis - critical for reliable high-current DC-DC conversion in portable and industrial power systems.

Technical Context

The MP9184AGL-Z implements peak current-mode control with a 600kHz fixed switching frequency and supports both internal (CLDR-to-GND) and external (R_SENSE) current sensing configurations. Its dual-stage protection includes linear charge current limiting during startup and boost-mode average input current regulation once V_OUT > V_IN.

VDD is auto-switched between IN and OUT to maintain gate drive integrity across wide input ranges; BST supplies the SDR driver for synchronous rectification, while COMP enables loop stability tuning via external RC network. The IC integrates under-voltage lockout, output over-voltage protection (108% FB threshold), and hiccup-mode recovery after fault conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3V to 20V - supports single-cell Li-ion to multi-cell battery inputs and USB PD-compatible sources.
Switching Frequency	600kHz ±150kHz - enables compact magnetics design with 1.5µH inductors and reduces EMI filtering burden.
Internal Switch R_DS(on)	10mΩ - minimizes conduction loss at 19A peak current, enabling >90% efficiency at 2A load (VIN=3.3V→VOUT=12V).
Input Average Current Limit	Programmable via V_CL/R_SENSE (typ. 54mV) - allows precise input current capping for battery discharge control and USB compliance.
Shutdown Current	<1µA - preserves battery life in standby mode for portable devices like Bluetooth audio and power banks.
Thermal Shutdown Threshold	150°C with 25°C hysteresis - ensures safe operation under sustained 2.6W dissipation in QFN-22 package on 4-layer PCB.
FB Reference Voltage	1.225V ±17mV - sets output voltage accuracy via resistor divider; enables stable 5V/12V/20V rail generation.

Pinout & Package

MP9184AGL-Z is housed in a thermally enhanced QFN-22 (3mm × 4mm, 0.5mm pitch) package with exposed thermal pad. Pin assignments are validated per Monolithic Power Systems Rev. 1.1 datasheet (June 2016).

Pin/Terminal	Circuit Role	Design Meaning
BST (Pin 1)	Bootstrap supply	Powers SDR driver; requires ceramic capacitor from BST to SW to sustain 5V gate drive during high-duty-cycle operation.
SDR (Pin 2)	Synchronous rectifier driver	Complementary gate signal for external N-channel MOSFET; improves efficiency vs. Schottky diode in high-current boost paths.
OUT (Pin 3)	Output voltage sense & VDD source	Feeds feedback divider and powers VDD when VOUT > VIN - maintains bias stability across wide input/output differentials.
EN (Pin 4)	Enable control with UVLO programming	Three-level logic: micro-power mode (VEN ≥ 1.0V), full operation (VEN ≥ 1.33V), shutdown (VEN ≤ 0.4V); supports system-level sequencing.
CLDR (Pin 5)	Input disconnect MOSFET driver	Charges external gate or floats for R_SENSE configuration; pulled low during hiccup to isolate input during faults.
SENSE (Pin 6)	Current sense input	Connects to IN for internal sensing or to external R_SENSE for programmable average current limit - defines OCP behavior.
SW (Pins 7,8,19,20,21)	Power switch node	Drain of internal 10mΩ MOSFET; connects to inductor and synchronous rectifier - high-current path requiring low-inductance layout.
PGND (Pins 9,10,17,18,22)	Power ground	Separate from AGND; must be tied to thermal pad and connected directly to input/output capacitors to minimize noise coupling.
IN (Pin 11)	Main input supply	Requires local 10µF+ ceramic bypass; feeds VDD during startup and powers internal circuitry before VOUT takeover.
VDD (Pin 12)	Internal bias supply	Decoupled with ≥2.2µF ceramic cap; powered from IN initially, then from OUT - ensures consistent gate drive across input range.
COMP (Pin 13)	Loop compensation node	External RC network sets pole/zero placement; clamped to VSS + 0.7V during soft-start to prevent inrush current.
FB (Pin 14)	Feedback input	Compares against 1.225V reference; resistor divider from VOUT sets regulated output voltage with ±1.4% tolerance.
SS (Pin 15)	Soft-start control	Capacitor sets ramp time; starts at 1/4 frequency and scales to full 600kHz as SS voltage exceeds 0.65V - eliminates input surge.
AGND (Pin 16)	Analog ground	Reference for FB, COMP, SENSE; must be star-connected to PGND at single point to avoid noise injection into error amplifier.

Key Features

Feature	Design Value
Input Disconnect Function	CLDR-driven external MOSFET isolates input during output short or shutdown - prevents battery drain and enables safe hot-swap in power banks.
Programmable Input Average Current Limit	V_CL = 54mV (typ.) with external R_SENSE - enables precise 1–10A input current capping without changing IC, supporting diverse USB/POS load profiles.
External Compensation & Soft-Start	Independent COMP and SS pins allow custom loop dynamics and controlled inrush - essential for stable transient response across 3V–20V input and varying loads.
Thermal Protection with Hysteresis	Shuts down at 150°C, restarts at 125°C - prevents thermal runaway during overload while avoiding oscillation near trip point.
UVLO with Adjustable Hysteresis	VEN turn-on threshold = 1.33V, hysteresis = 250mV - supports clean power sequencing and brown-out immunity in battery-powered systems.

Applications

Thunderbolt Interface Power Delivery

Portable Power Bank Output Stage

Use Scenario: Supplies regulated 20V output from 3.3V–12V battery or USB-C source to meet Thunderbolt 3/4 host port power requirements.

IC Role / Device Role / Timing Role: Primary synchronous boost controller managing input disconnect, current-limited startup, and tight output regulation under dynamic load steps.

Use Value: Enables single-chip 20V/3A delivery with <1µA shutdown current and hiccup recovery - extends battery runtime and meets USB PD sink specifications.

Use Scenario: Steps up single-cell Li-ion (3.0V–4.2V) to 5V/9V/12V USB-A/USB-C output rails in multi-port power banks.

IC Role / Device Role / Timing Role: High-efficiency boost converter with programmable input current limit to comply with USB BC1.2 and QC3.0 source negotiation.

Use Value: 10mΩ R_DS(on) and 600kHz operation achieve >92% efficiency at 2A, reducing thermal stress and enabling compact 10,000mAh form factors.

Bluetooth Audio DAC Power Supply

POS Terminal Main Rail Generator

Use Scenario: Generates ultra-low-noise 5V rail from coin cell or LiPo for high-fidelity DACs and Class-D amplifiers in wireless earbuds and speakers.

IC Role / Device Role / Timing Role: Low-quiescent-current (110µA IN, 650µA OUT) boost regulator with foldback frequency and pulse-skipping for light-load efficiency.

Use Value: <1µA shutdown current and 250mV UVLO hysteresis preserve battery life over months of standby - critical for always-on audio accessories.

Use Scenario: Provides stable 12V/15V main rail for receipt printers, barcode scanners, and EMV contactless readers in retail POS terminals.

IC Role / Device Role / Timing Role: Robust boost controller with thermal shutdown, output SCP, and input disconnect to survive 24/7 operation and accidental short circuits.

Use Value: QFN-22 package with exposed thermal pad sustains 2.6W dissipation; hiccup-mode OCP prevents latch-up during printer motor surges.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
RT4801BZQW	40V max input, 2.5A switch current limit, no input disconnect function, 2.2MHz switching frequency	Limited to lower-output-current applications (≤3A); lacks CLDR-driven input isolation - unsuitable for battery-depletion-critical designs	Select only if higher frequency (2.2MHz) and smaller inductors are prioritized over input disconnect and 19A capability.
TPS61236RGET	5.5V max input, 4A switch current, integrated 22µH inductor, no external compensation or programmable current limit	Designed for ultra-compact space-constrained apps (wearables); incompatible with 3.3V–20V wide-input or programmable current-limit use cases	Choose only for sub-5V input, low-power (<2W) applications where board area is more critical than flexibility or ruggedness.

Compared with RT4801BZQW and TPS61236RGET, MP9184AGL-Z uniquely combines 20V input support, 19A current handling, input disconnect, and full external loop control - making it the sole option for high-reliability, high-current portable power systems requiring battery isolation and field-programmable limits.

Availability

MP9184AGL-Z is available at Aetrix Electronics and suitable for Thunderbolt interface power delivery, portable power bank output stages, and POS terminal main rail generation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MP9184AGL-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 MP9184A product line targets high-current portable power applications requiring wide input range, input disconnect, and programmable current limiting - specifically engineered for power banks, USB-C accessories, and industrial handheld terminals.

FAQ

What is the purpose of the CLDR pin, and how does it enable input disconnect?

The CLDR pin drives the gate of an external N-channel MOSFET placed between the input source and the boost converter's IN pin. When the MP9184AGL-Z detects a fault (e.g., output short or thermal shutdown), it pulls CLDR low, turning off the MOSFET and physically isolating the input from the output. This prevents battery depletion during faults and enables safe hot-swap in power bank designs. CLDR must not be pulled to GND through a resistor - direct connection is required for proper operation.

Can MP9184AGL-Z operate without an external synchronous rectifier MOSFET?

Yes - the SDR pin can be left floating to disable synchronous rectification, allowing use of a Schottky diode instead. However, efficiency drops significantly above 1A due to diode forward voltage drop. For full 19A capability and >90% efficiency, a low-Qg, logic-level N-channel MOSFET (V_GS(th) < 2.5V) must be used with SDR driving its gate and BST supplying the required 5V gate drive.

How is the input average current limit set, and what is the typical sensing resistor value for a 5A limit?

The input average current limit is set by the equation I_CL = V_CL / R_SENSE, where V_CL = 54mV (typical). For a 5A limit, R_SENSE = 54mV / 5A = 10.8mΩ. A standard 10mΩ, 0805-package resistor (e.g., Vishay WSL0805) is recommended to minimize parasitic inductance and ensure accurate current sensing across temperature.

What happens during startup if the output voltage cannot reach the input voltage quickly enough?

If V_OUT remains ≤ V_IN after soft-start (V_SS > 0.7V), the MP9184AGL-Z enters hiccup-mode protection: switching stops, CLDR is pulled low, and the IC waits 20–70ms before retrying. This prevents damage during heavy loads or undersized output capacitance. Recovery follows the same linear charge sequence as initial startup, regulated by V_CL/R_SENSE.

Is the MP9184AGL-Z compatible with ceramic output capacitors only, or can electrolytic types be used?

Ceramic output capacitors are strongly recommended - the MP9184AGL-Z's fast transient response and stability are optimized for low-ESR ceramics (e.g., 22µF × 3 X5R in parallel). Electrolytic capacitors introduce high ESR and inductance, degrading loop stability, increasing output ripple, and potentially triggering false OVP or thermal events. If bulk capacitance is needed, parallel ceramic arrays are preferred over electrolytics.

Does the MP9184AGL-Z support output voltages above 20V, and what limits the maximum VOUT?

The absolute maximum rated voltage at the OUT pin is 24V, but recommended operating V_OUT is limited to 22V per datasheet. Exceeding 22V risks violating the 24V absolute maximum rating during transients or load dumps. The FB reference (1.225V) and resistor divider define regulation accuracy; for 22V output, the upper resistor must be selected to keep FB at exactly 1.225V under all load/temperature conditions.

How does the MP9184AGL-Z handle light-load efficiency, and what modes are active below 100mA?

Below ~100mA, the MP9184AGL-Z first enters foldback frequency mode (reducing switching frequency to ~100kHz), then transitions to pulse-skipping mode (PSM) at lighter loads. In PSM, only one switching pulse occurs per burst cycle, minimizing gate drive and switching losses. Quiescent current drops to 110µA (on IN) and 650µA (on OUT), enabling >85% efficiency even at 10mA load - ideal for Bluetooth audio standby operation.

MP9184AGL-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 22-PowerVFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Up

Output Configuration:: Positive

Topology:: Boost

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:: 19A

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)

MP9184AGL-Z FAQ

1.How can I place an order for MP9184AGL-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP9184AGL-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 MP9184AGL-Z reliable?

The price and inventory of MP9184AGL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP9184AGL-Z is usually 5 days.

3.What payment methods are accepted for MP9184AGL-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP9184AGL-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP9184AGL-Z?

MP9184AGL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP9184AGL-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 MP9184AGL-Z?

For technical support, including MP9184AGL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP9184AGL-Z requirements.

6.How does Aetrix verify that MP9184AGL-Z is sourced from the original manufacturer or authorized distributors?

All MP9184AGL-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 MP9184AGL-Z meets industry standards.

7.What is the process for return or replacement of MP9184AGL-Z?

All MP9184AGL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP9184AGL-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 MP9184AGL-Z part is unused and in its original packaging.

Return procedure for MP9184AGL-Z:

1.Submit a request within 90 days.

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

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