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

Monolithic Power Systems Inc. MP2208DL-LF-P

Name: MP2208DL-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MP2208DL-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP2208DL-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 14-VFDFN Exposed Pad

Datasheet:: MP2208DL-LF-P.pdf

Description:: IC REG BUCK ADJ 4A 14QFN

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Product details

Overview

MP2208DL-LF-P from Monolithic Power Systems is a 600kHz fixed-frequency synchronous step-down DC/DC converter delivering up to 4A output current from a 3V–16V input, with adjustable output voltage (0.8V to 0.9×VIN), integrated 80mΩ high- and low-side MOSFETs, and power-good monitoring - deployed in FPGA core supplies and telecom point-of-load regulation.

For engineers reviewing the MP2208DL-LF-P datasheet, MP2208DL-LF-P pinout, MP2208DL-LF-P application, or MP2208DL-LF-P equivalent, key selection criteria include its 600kHz switching frequency, thermal shutdown at 150°C, cycle-by-cycle current limiting (6A high-side / 2A low-side), soft-start control via external capacitor, and QFN14 (3mm×4mm) package with exposed thermal pad for industrial-grade thermal management.

Technical Context

The MP2208DL-LF-P implements peak-current-mode PWM control with internal Type II compensation, enabling stable operation with ceramic output capacitors and small inductors without external loop components. Its transconductance error amplifier delivers 11.25A/V gain from COMP voltage to output current, simplifying transient response tuning.

It features dual-function EN/SYNC pin supporting both enable logic (1.6V turn-on / 0.4V shutdown thresholds) and external clock synchronization (0.5–2MHz), while the bootstrap (BS) circuit sustains high-side gate drive using a capacitor between BS and SW pins - critical for maintaining >90% duty cycle capability and minimizing conduction loss.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3V to 16V - supports wide-input industrial and telecom rails including 5V, 12V, and 15V bus systems.
Output Current	Up to 4A continuous - sufficient for powering FPGA I/O banks or ASIC cores without external current boosting.
Switching Frequency	600kHz fixed - enables compact magnetics (e.g., 3.3µH–4.7µH inductors) and balances EMI vs. efficiency trade-offs.
Feedback Reference	0.794V typical (0.770–0.818V over temperature) - sets precise output regulation with ±1.5% initial accuracy at FB pin.
High-Side R_DS(on)	80mΩ - reduces conduction loss at full load, contributing to >92% peak efficiency at 3.3V/4A (VIN=12V).
Thermal Shutdown	150°C with 20°C hysteresis - protects die during sustained overload or poor PCB thermal design while allowing safe recovery.
Soft-Start Current	5µA constant - allows precise soft-start timing via external SS capacitor (e.g., 10nF → ~1.6ms ramp).

Pinout & Package

The MP2208DL-LF-P uses a thermally enhanced 3mm × 4mm, 14-lead QFN package with exposed thermal pad (pin 14 is FB; pins 1/3/12 are AGND/PGND; pins 4/11 are SW; pins 5/10 are IN; pin 8 is VCC; pin 9 is POK; pin 13 is EN/SYNC; pin 2 is SS; pin 7 is BS; pin 6 is NC).

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 12	AGND / PGND	Dual ground paths: AGND for analog reference, PGND for high-current return - must be joined externally with low-inductance copper pour.
2	SS	Soft-start control node - internal 5µA current source charges external capacitor to ramp FB reference and limit inrush current.
4, 11	SW	Switch node - connects to inductor and internal high/low-side MOSFETs; requires short, low-area trace to minimize ringing and EMI.
5, 10	IN	Main power input - requires local 22µF ceramic decoupling per pin to suppress switching transients and stabilize VIN.
7	BS	Bootstrap supply - capacitor between BS and SW provides floating gate drive for high-side N-MOSFET; critical for >90% duty cycle operation.
8	VCC	Bias supply (3V–6V) - powers control logic and gate drivers; needs dedicated 22µF decoupling close to pin and GND.
9	POK	Open-drain power-good - asserts HIGH when VOUT is within ±10% of target; requires external pull-up to VCC for proper logic level.
13	EN/SYNC	Enable + sync input - TTL-compatible enable (1.6V/0.4V thresholds) and accepts 0.5–2MHz external clock for EMI reduction via frequency alignment.
14	FB	Feedback input - compares output voltage (via resistive divider) against 0.794V internal reference; sensitive to noise - keep trace short and away from SW.

Key Features

Feature	Design Value
Integrated 80mΩ HS/LS MOSFETs	Eliminates need for external Schottky diode in most ≤4A applications, reducing BOM count and board area by ~25%.
Internal Type II Compensation	Removes requirement for external compensation network - simplifies layout and ensures stability across 0.8V–5V output range with ceramic caps.
Power Good (POK) Output	Provides system-level power sequencing feedback with 30µs deglitching - enables reliable FPGA configuration or processor reset coordination.
Frequency Synchronization	Allows alignment of switching edges to system clock or other converters - essential for noise-sensitive imaging or RF subsystems.
Cycle-by-Cycle Current Limit	Protects against short-circuit faults with 6A high-side and 2A low-side limits - prevents MOSFET avalanche failure during transient overloads.

Applications

FPGA Core Supply

Telecom Point-of-Load

Use Scenario: Powers 1.2V–1.8V core rails of Xilinx Artix-7 or Intel Cyclone V FPGAs in base station control cards.

IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering tightly regulated, low-noise DC with fast transient response to handle dynamic core current steps.

Use Value: Achieves <1.5% output deviation under 0–4A 10A/µs load steps due to peak-current-mode control and internal compensation.

Use Scenario: Generates 3.3V/4A for Ethernet PHYs and packet processors in 1RU network switches operating at 45°C ambient.

IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter placed near ASICs to minimize IR drop and improve power integrity.

Use Value: Delivers >93% efficiency at 12V_IN/3.3V_OUT/4A, reducing thermal load on densely packed PCBs and eliminating need for heatsinks.

ASIC I/O Voltage Rail

LCD TV Backlight Driver Supply

Use Scenario: Supplies 2.5V/4A to memory interfaces and SerDes I/O banks in automotive ADAS domain controllers.

IC Role / Device Role / Timing Role: Robust, thermally managed buck stage meeting AEC-Q100 Grade 2 requirements via thermal shutdown and UVLO protection.

Use Value: Maintains regulation over –40°C to +105°C junction temperature with no derating - validated via 1000-hour HTOL testing.

Use Scenario: Provides 5V/4A bias for LED driver ICs in 4K LCD TV main boards where space and acoustic noise are constrained.

IC Role / Device Role / Timing Role: Low-EMI, fixed-frequency DC/DC stage synchronized to system timing controller to avoid beat frequencies in audio band.

Use Value: Enables 600kHz operation with spread-spectrum option (via external sync) to reduce conducted EMI peaks below CISPR-32 Class B limits.

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
RT7295BGJ8F	4A rating, 600kHz, but uses external compensation and lacks POK pin; R_DS(on) = 90mΩ/100mΩ.	No integrated power-good signal - requires external supervisor IC for sequencing-critical systems.	Select when cost sensitivity outweighs need for POK or when custom loop tuning is required for ultra-fast transient response.
TPS544B25RQF	4A, 1.5MHz, PMBus-enabled, but larger 4mm×4mm QFN; R_DS(on) = 32mΩ/20mΩ; requires external VDD bias.	Supports digital telemetry and margining - adds complexity for simple analog-only designs.	Select when telemetry, remote configuration, or higher switching frequency (for smaller inductors) justifies added BOM and firmware overhead.

Compared with RT7295BGJ8F and TPS544B25RQF, the MP2208DL-LF-P offers optimal balance of integration (POK, internal compensation), thermal performance (14-pin QFN with exposed pad), and analog simplicity - making it ideal for cost- and space-constrained industrial and telecom PoL applications where digital control is unnecessary.

Availability

MP2208DL-LF-P is available at Aetrix Electronics and suitable for FPGA core supplies, telecom point-of-load regulation, and ASIC I/O voltage rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2208DL-LF-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global distribution since 1997.

The MP2208 belongs to MPS's MP22xx family of integrated synchronous buck converters - engineered for high-density, high-efficiency DC/DC conversion in space-constrained industrial, computing, and communications equipment.

FAQ

What is the minimum recommended output capacitance for stable operation?

The MP2208DL-LF-P is stable with ≥47µF ceramic output capacitance (X5R/X7R dielectric). Lower values may cause instability or excessive ripple; electrolytic capacitors require careful ESR-based loop compensation adjustment per the datasheet's f_ESR guidance.

Can the MP2208DL-LF-P operate without an external bootstrap capacitor?

No - the BS pin requires a capacitor (typically 0.1µF ceramic) connected to SW to generate the floating voltage needed for high-side gate drive. Omitting it disables the high-side switch and causes immediate functional failure or thermal shutdown.

Does the EN/SYNC pin support both enable logic and external clock simultaneously?

No - the EN/SYNC pin operates in one mode at a time: if a valid external clock (0.5–2MHz) is present, it overrides enable logic and forces synchronization; otherwise, it functions as a standard enable input with 1.6V/0.4V thresholds.

What is the maximum allowable voltage on the FB pin?

The FB pin must not exceed the VCC voltage at any time. Absolute maximum rating is VCC + 0.3V; exceeding this risks damaging the internal error amplifier. External resistor dividers must ensure FB voltage stays within 0–VCC range during startup and fault conditions.

How does the MP2208DL-LF-P handle pre-biased output startup?

When the output is pre-biased above the soft-start target, the MP2208DL-LF-P inhibits switching until the SS capacitor voltage exceeds the sensed FB voltage - preventing reverse current flow and ensuring controlled, non-destructive startup into pre-charged loads.

Is an external Schottky diode required for reliability at 4A output?

An external Schottky diode (e.g., B0530) is recommended when output current exceeds 2A - it clamps negative voltage spikes at the SW node, reduces stress on the internal low-side MOSFET, and improves efficiency by ~1–2% at full load.

What PCB layer count is recommended for thermal performance?

A 4-layer PCB is mandatory for thermal reliability: inner layers must include solid ground and power planes connected to the exposed thermal pad (pins 1/3/12/14), with ≥6 thermal vias (0.3mm diameter) under the pad to transfer heat to internal planes.

MP2208DL-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 14-VFDFN Exposed Pad

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):: 16V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 14.4V

Current - Output:: 4A

Frequency - Switching:: 600kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-QFN (3x4)

MP2208DL-LF-P FAQ

1.How can I place an order for MP2208DL-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP2208DL-LF-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 MP2208DL-LF-P reliable?

The price and inventory of MP2208DL-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2208DL-LF-P is usually 5 days.

3.What payment methods are accepted for MP2208DL-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2208DL-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP2208DL-LF-P?

MP2208DL-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP2208DL-LF-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 MP2208DL-LF-P?

For technical support, including MP2208DL-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2208DL-LF-P requirements.

6.How does Aetrix verify that MP2208DL-LF-P is sourced from the original manufacturer or authorized distributors?

All MP2208DL-LF-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 MP2208DL-LF-P meets industry standards.

7.What is the process for return or replacement of MP2208DL-LF-P?

All MP2208DL-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2208DL-LF-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 MP2208DL-LF-P part is unused and in its original packaging.

Return procedure for MP2208DL-LF-P:

1.Submit a request within 90 days.

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

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