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

Monolithic Power Systems Inc. MP2182CGTL-P

Name: MP2182CGTL-P
Brand: Monolithic Power Systems Inc.
SKU: MP2182CGTL-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP2182CGTL-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: SOT-583

Datasheet:: MP2182CGTL-P.pdf

Description:: IC REG BUCK ADJ 2A SOT583

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MP2182CGTL-P from Monolithic Power Systems is a monolithic synchronous step-down DC-DC converter with integrated 80mΩ high-side P-MOSFET and 40mΩ low-side N-MOSFET, delivering up to 2A continuous output current from 2.5V–5.5V input while regulating output down to 0.6V. It employs constant-on-time (COT) control for fast transient response and includes power good (PG), external soft-start (SS), and hiccup-mode short-circuit protection - deployed in portable instrumentation and battery-powered I/O rails.

For engineers reviewing the MP2182CGTL-P datasheet, MP2182CGTL-P pinout, MP2182CGTL-P application, or MP2182CGTL-P equivalent, key selection criteria include its 1.2MHz switching frequency, 21μA quiescent current, 1% FB voltage accuracy, 80/40mΩ internal MOSFET R_DS(ON), and SOT583 package thermal performance under 125°C junction operation.

Technical Context

The MP2182CGTL-P uses input-voltage feed-forward COT control to maintain stable 1.2MHz switching across its 2.5V–5.5V input range, with minimum on/off times of 70ns/80ns (at 3.6V) enabling high duty-cycle operation down to 0.6V output. Its AAM (Advanced Asynchronous Modulation) + ZCD (Zero-Current Detection) architecture forces DCM at light load while preserving regulation accuracy.

Fault management includes cycle-by-cycle peak current limiting (3.5A high-side), valley current limiting (2A low-side), VO OVP with 115% threshold and 10% hysteresis, thermal shutdown at 160°C with 30°C hysteresis, and automatic output discharge during disable via 150Ω internal discharge path.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.5V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V rail inputs without pre-regulation.
Output Current	2A continuous - sufficient for powering DSP cores, RF transceivers, or multi-rail PMIC subsystems.
Feedback Accuracy	±1% at 25°C (594–606mV) - ensures tight output regulation critical for low-voltage logic I/O domains.
Quiescent Current	21μA - enables >10-year battery life in always-on sensor nodes or wearable standby modes.
Switching Frequency	1.2MHz - allows use of compact 1μH shielded inductors and reduces EMI filter size in space-constrained PCBs.
MOSFET R_DS(ON)	80mΩ (HS) / 40mΩ (LS) - minimizes conduction loss at 2A, supporting >90% efficiency at 3.6V_IN/1.2V_OUT.
Power Good Threshold	90% V_FB rising / 85% V_FB falling - provides clean, glitch-free system power sequencing with 80μs delay.

Pinout & Package

SOT583 is an ultra-small, thermally enhanced 8-pin package (1.6mm × 2.1mm × 0.55mm) with exposed thermal pad, optimized for high-density portable designs requiring minimal board area and efficient heat dissipation into inner copper layers.

Pin/Terminal	Circuit Role	Design Meaning
1 PG	Open-drain power good indicator	Signals valid regulation (V_FB ≥90%) to host MCU; requires external 100kΩ–500kΩ pull-up to V_OUT or V_IN.
2 VIN	Main input supply	Accepts 2.5V–5.5V unregulated source; decoupling capacitor must be placed adjacent to minimize input ripple and EMI.
3 SW	Switching node	Drain of internal high-side P-MOSFET; connects directly to inductor; layout must minimize loop area to reduce radiated noise.
4 GND	Power and signal ground	Primary return path for input/output currents and IC bias; must connect to thermal pad and solid ground plane.
5 EN	Enable control	Active-high logic input (1.2V threshold); internal 2MΩ pulldown enables default-disable behavior for safe power-up.
6 SS	Soft-start timing	3μA constant-current sink; external capacitor sets ramp time to prevent inrush current and output overshoot.
7 OUT	Output power rail & sense	Delivers regulated output; also serves as local feedback reference point - must be routed close to FB pin.
8 FB	Feedback voltage input	Monitors resistor divider ratio; 600mV reference enables precise output setting (e.g., 1.2V with 100kΩ/100kΩ).

Key Features

Feature	Design Value
Constant-On-Time (COT) Control	Enables <10μs load transient recovery without external compensation components - simplifies design for dynamic loads like RF PA bursts.
100% Duty Cycle Capability	Allows dropout operation down to V_OUT = V_IN – 0.1V - critical for maintaining regulation during brown-out conditions in battery systems.
Output Discharge Function	Activates internal 150Ω discharge FET when EN = low - clears residual charge from output caps to meet safety or reset timing requirements.
Hiccup-Mode Short-Circuit Protection	Shuts down SW, discharges SS cap, then retries startup - prevents thermal runaway during sustained overload or PCB shorts.
Self-Biased PG During No-Power	When VIN/EN are absent, PG pulls to ≤0.7V via internal 300kΩ resistor - enables reliable power-status monitoring in hot-swap or backup-power scenarios.

Applications

Wireless Networking Cards

Portable Instrumentation

Use Scenario: Powering 2.4GHz/5GHz Wi-Fi/BT SoCs and RF front-end modules in mini-PCIe or M.2 form-factor adapters.

IC Role / Device Role / Timing Role: Primary 1.2V/1.8V core and I/O supply regulator with fast load-step response to handle burst-mode TX/RX current demands.

Use Value: 1.2MHz switching avoids interference with 2.4GHz ISM band; 21μA IQ extends runtime in low-duty-cycle IoT gateways.

Use Scenario: Providing stable 3.3V and 1.2V rails for handheld multimeters, oscilloscope probes, and portable spectrum analyzers.

IC Role / Device Role / Timing Role: Main system PMIC for microcontroller, ADC, and display driver - coordinated via EN and PG for sequenced power-up.

Use Value: SOT583 footprint saves board space in compact enclosures; ±1% FB accuracy ensures measurement integrity across temperature.

Battery-Powered Medical Sensors

Low-Voltage I/O System Power

Use Scenario: Regulating power for wearable ECG/SpO₂ sensors operating from coin-cell or rechargeable LiPo batteries.

IC Role / Device Role / Timing Role: Always-on 1.8V analog front-end supply with ultra-low IQ and automatic output discharge for safe shutdown.

Use Value: 21μA quiescent current enables >5-year shelf life; hiccup-mode protection prevents battery drain during sensor fault conditions.

Use Scenario: Generating 0.9V/1.1V supplies for FPGA I/O banks, DDR memory termination, or low-voltage ASIC interfaces.

IC Role / Device Role / Timing Role: Point-of-load regulator with precise 0.6V reference and 1% FB tolerance - configured via external resistive divider.

Use Value: 80/40mΩ MOSFETs minimize voltage drop at 2A, ensuring tight margin compliance for JEDEC-compliant I/O standards.

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
TPS62865RQYR	Higher 3A rating, 2.5V–5.5V input, but 2.4MHz f_SW and no PG pin; 0.6V reference, ±0.5% FB accuracy.	Lacks power good signaling - unsuitable where system-level power sequencing or fault reporting is required.	Select when higher current headroom and tighter FB accuracy outweigh need for PG and lower EMI from 1.2MHz operation.
RT7295BGJ6F	2A, 2.5V–5.5V, 1.5MHz f_SW, includes PG and SS, but 35μA IQ and ±2% FB accuracy; SOT563 package.	Higher quiescent current reduces battery life; looser FB tolerance limits precision low-voltage rail stability.	Choose only if SOT563 footprint compatibility is mandatory and 21μA IQ or 1% FB accuracy are non-critical.

Compared with TPS62865RQYR and RT7295BGJ6F, the MP2182CGTL-P uniquely balances ultra-low IQ (21μA), tight FB accuracy (±1%), integrated PG/SS, and thermally robust SOT583 packaging - making it optimal for space- and battery-constrained applications demanding reliability and precision.

Availability

MP2182CGTL-P is available at Aetrix Electronics and suitable for wireless networking cards, portable instrumentation, battery-powered medical sensors, and low-voltage I/O system power requiring stable component supply across industrial temperature ranges and long-lifecycle programs.

Supply support for MP2182CGTL-P 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 power management ICs, with over two decades of innovation in DC-DC converters, LED drivers, and motor controllers.

The MP2182 belongs to MPS's ultra-compact, high-efficiency buck converter product line designed specifically for portable, battery-powered, and space-constrained applications demanding low IQ, fast transient response, and integrated protection features.

FAQ

What is the minimum output voltage achievable with MP2182CGTL-P?

The MP2182CGTL-P regulates output down to 0.6V using its internal 600mV feedback reference and external resistor divider. This enables direct powering of modern low-voltage logic cores (e.g., 0.8V–1.2V FPGA I/O, ARM Cortex-A series), provided external components (inductor, capacitors) are selected per the datasheet's stability guidelines for sub-1V operation.

Does MP2182CGTL-P support forced PWM mode, or is it limited to auto-frequency modulation?

The MP2182CGTL-P does not support forced PWM mode. It operates in automatic mode using COT control with AAM (Advanced Asynchronous Modulation) and ZCD (Zero-Current Detection) to transition between CCM and DCM based on load. At light load, it enters sleep mode with reduced bias currents - no user-selectable PWM-only option exists.

How is the soft-start time calculated for MP2182CGTL-P?

Soft-start time is set by an external capacitor on the SS pin, charged by a 3μA internal current source. For example, a 2.2nF capacitor yields ~733μs ramp time (t_SS ≈ C_SS × 0.6V / 3μA). The output voltage rises linearly from 0V to target V_OUT during this period, preventing inrush current and overshoot in sensitive downstream circuitry.

What thermal derating applies to the 2A output current rating?

The 2A rating is specified at T_A = +25°C on a 2-layer EVB (θ_JA = 58°C/W). At 85°C ambient, maximum continuous output drops to ~1.5A due to thermal limiting; full 2A is sustainable only with adequate PCB copper area, thermal vias to inner planes, or forced airflow. Junction temperature must remain ≤125°C for reliable operation.

Can MP2182CGTL-P safely operate with input voltage below 2.5V?

No - the absolute minimum input is 2.5V per datasheet specifications. Below this, UVLO disables operation (rising threshold = 2.45V typical). Attempting operation at 2.3V may cause erratic switching, failure to regulate, or undefined PG behavior. For sub-2.5V inputs, consider the MP2161 (1.8V–6.0V input range) instead.

Is the PG pin compatible with 1.8V logic systems without level shifting?

Yes - the PG pin is open-drain and can be pulled up to any voltage ≤V_IN (max 5.5V). To interface with 1.8V logic, connect a 100kΩ resistor from PG to 1.8V. When active, PG sinks current and pulls to <0.4V (guaranteed at 1mA sink); when inactive, it floats high to 1.8V, meeting standard 1.8V logic 'high' thresholds.

What failure modes trigger hiccup-mode protection?

Hiccup mode activates during sustained overcurrent (e.g., shorted output, failed capacitor) or persistent overvoltage (e.g., feedback resistor open). The device stops switching, discharges the SS capacitor, waits ~5ms, then attempts soft-start again. This cycle repeats until fault clears - protecting MOSFETs, inductor, and input source from thermal damage.

MP2182CGTL-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: SOT-583

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):: 2.5V

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 0.6V

Voltage - Output (Max):: 5.5V

Current - Output:: 2A

Frequency - Switching:: 1.2MHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-583

MP2182CGTL-P FAQ

1.How can I place an order for MP2182CGTL-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP2182CGTL-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 MP2182CGTL-P reliable?

The price and inventory of MP2182CGTL-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2182CGTL-P is usually 5 days.

3.What payment methods are accepted for MP2182CGTL-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2182CGTL-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP2182CGTL-P?

MP2182CGTL-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP2182CGTL-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 MP2182CGTL-P?

For technical support, including MP2182CGTL-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2182CGTL-P requirements.

6.How does Aetrix verify that MP2182CGTL-P is sourced from the original manufacturer or authorized distributors?

All MP2182CGTL-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 MP2182CGTL-P meets industry standards.

7.What is the process for return or replacement of MP2182CGTL-P?

All MP2182CGTL-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2182CGTL-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 MP2182CGTL-P part is unused and in its original packaging.

Return procedure for MP2182CGTL-P:

1.Submit a request within 90 days.

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

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