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

Monolithic Power Systems Inc. MP9218DGT-LF-P

Name: MP9218DGT-LF-P
Brand: Monolithic Power Systems Inc.
SKU: MP9218DGT-LF-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP9218DGT-LF-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 6-WFDFN Exposed Pad

Datasheet:: MP9218DGT-LF-P.pdf

Description:: IC REG CHARG PUMP 5V 110MA 6TQFN

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Product details

Overview

MP9218DGT-LF-P from Monolithic Power Systems is a regulated 2× switched-capacitor charge pump IC that converts 2.8V–5V input to a fixed 5V ±200mV output, delivers up to 110mA, operates at 1.35MHz, and features over-current, short-circuit, and thermal protection in a TQFN-6 (2mm×2mm) package for compact LCD bias and portable device power rails.

For engineers reviewing the MP9218DGT-LF-P datasheet, MP9218DGT-LF-P pinout, MP9218DGT-LF-P application, or MP9218DGT-LF-P equivalent, this page provides verified electrical parameters, validated terminal roles, confirmed operating conditions, real-world use cases in handheld displays and remote controls, and two functionally comparable alternatives with documented differences.

Technical Context

The MP9218 implements a fixed-ratio 2× charge pump topology with internal voltage regulation via resistive feedback sensing and comparator-based switching control. Its 1.35MHz oscillator drives synchronous flying capacitor (CP/CN) switching to maintain stable 5V output under load variations up to 110mA.

Regulation accuracy relies on internal 4.8V–5.2V output window tolerance and soft-start circuitry limiting inrush current during startup and mode transitions. Protection includes cycle-by-cycle current limiting (250–500mA OCP), 60mA short-circuit clamp, and thermal shutdown at ~145°C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.8V to 5.0V - supports single-cell Li-ion (3.0–4.2V) and USB-powered systems without external LDO pre-regulation.
Output Voltage	5.0V ±200mV - tightly regulated rail for LCD bias, LED drivers, or logic interface supply with 30mV ripple at 60mA.
Max Output Current	110mA - sufficient for small TFT-LCD gate drivers or IR LED pulsing in TV remotes.
Switching Frequency	1.35MHz (typ.) - enables use of small 0.22µF flying capacitor and 2.2µF output ceramic caps, minimizing board area.
Enable Threshold	V_EN(HIGH) = 1.5V, V_EN(LOW) = 0.4V - compatible with 1.8V/3.3V GPIO control without level-shifting.
Thermal Shutdown	~145°C - protects against sustained overload or poor PCB thermal design; auto-recovery after cooldown.
Package	TQFN-6 (2mm × 2mm, 0.5mm pitch) - exposes thermal pad to GND for 16°C/W θ_JC, critical for 1.56W max dissipation.

Pinout & Package

TQFN-6 (2mm × 2mm) package with exposed thermal pad connected to GND. Pin 1 marked by index area; pins arranged counterclockwise from top-left corner in top view.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Power Ground Reference	Primary return path for input, output, and flying capacitor currents; must connect to large copper pour tied to exposed pad.
2 IN	Input Supply Terminal	Accepts 2.8V–5V unregulated source; requires local 2.2µF ceramic decoupling placed within 3mm.
3 OUT	Regulated Output Terminal	Delivers fixed 5V; decoupling cap value depends on load: 2.2µF for ≤60mA, 10µF for >60mA.
4 CP	Flying Capacitor Positive	Connects to positive terminal of 0.22µF flying cap; high dv/dt node requiring short, low-inductance trace.
5 CN	Flying Capacitor Negative	Connects to negative terminal of same flying cap; forms charge transfer path with CP during switching cycles.
6 EN	Logic-Controlled Enable	Active-high digital input; pulls device into ultra-low 0.1–1µA shutdown when <0.4V.

Key Features

Feature	Design Value
No Inductor Required	Uses 0.22µF flying capacitor instead of magnetic components-reduces EMI, saves space, eliminates inductor saturation risk.
Internal Soft-Start	Gradually ramps output during startup and mode change-limits peak inrush current to prevent input rail droop or brownout.
Fixed 5V Regulation	Maintains 4.8–5.2V output across full 2.8–5V input range and 0–110mA load-eliminates need for external feedback resistors.
Integrated Protection	Combines over-current (250–500mA), short-circuit (60mA clamp), and thermal shutdown (~145°C)-enables robust operation in unattended devices.
Lead-Free & RoHS Compliant	TQFN-6 package meets IPC/JEDEC J-STD-020 moisture sensitivity level 3 and EU RoHS Directive 2011/65/EU.

Applications

Smartphone LCD Bias Supply

TV Remote Control Power Rail

Use Scenario: Powers gate driver ICs and source drivers in small-form-factor smartphone TFT-LCD panels requiring clean 5V from 3.7V battery.

IC Role / Device Role / Timing Role: Regulated charge pump providing stable 5V bias with <30mV ripple at 60mA, synchronized to display frame rate via enable pin.

Use Value: Eliminates discrete boost converter + LDO combo, reducing BOM count by 4 parts and PCB area by >30%.

Use Scenario: Supplies 5V to IR LED driver and microcontroller in battery-powered TV remotes with intermittent high-current pulses.

IC Role / Device Role / Timing Role: Enabled only during button press via MCU GPIO; delivers 110mA peak for IR burst while maintaining <1µA quiescent draw between commands.

Use Value: Extends alkaline battery life to >12 months by avoiding continuous 2–4mA LDO quiescent loss.

Handheld PDA Display Backlight

Portable Medical Device Sensor Interface

Use Scenario: Generates 5V for white LED backlight in ruggedized PDA with wide ambient temperature range (–40°C to +85°C).

IC Role / Device Role / Timing Role: Operates continuously during display-on state; thermal shutdown prevents damage during extended outdoor use at high ambient.

Use Value: Maintains consistent LED brightness across temperature without external thermal monitoring circuitry.

Use Scenario: Provides isolated 5V rail for analog front-end sensors (e.g., ECG, pulse oximetry) in battery-operated medical monitors.

IC Role / Device Role / Timing Role: Powers precision ADC reference and op-amp stages; low 30mV ripple avoids signal-to-noise degradation in µV-level measurements.

Use Value: Achieves >86dB PSRR at 1.35MHz switching frequency, preventing switching noise coupling into sensitive analog paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar regulated charge pump applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS60403DBVR	Fixed 5V output, 60mA max, 1MHz switching, no thermal shutdown	Limited to lower-current LCD bias; lacks short-circuit and thermal protection	Choose for cost-sensitive, low-power designs where 60mA suffices and thermal margin is guaranteed
MAX881REUB+	Adjustable output (2.5–5.5V), 100mA max, 1.1MHz, no soft-start	Requires external feedback resistors; higher output ripple (50mV) and no inrush limiting	Choose when variable output voltage is required and system-level soft-start is implemented externally

Compared with TPS60403DBVR and MAX881REUB+, MP9218DGT-LF-P offers 110mA output, integrated thermal shutdown, and internal soft-start-making it optimal for compact, high-reliability portable displays where protection and current headroom are critical.

Availability

MP9218DGT-LF-P is available at Aetrix Electronics and suitable for smartphone LCD bias supply, TV remote control power rails, handheld PDA display backlighting, and portable medical sensor interfaces requiring stable component supply with lead-free compliance and industrial temperature support.

Supply support for MP9218DGT-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 core expertise in DC/DC conversion, LED drivers, and motor control solutions.

The MP9218 belongs to MPS's regulated charge pump product line, designed specifically for space-constrained portable electronics needing efficient, inductorless 5V generation from single-cell batteries or USB sources.

FAQ

What is the minimum input voltage required for MP9218DGT-LF-P to regulate 5V output?

The MP9218DGT-LF-P requires a minimum input voltage of 2.8V to maintain regulation. Below this threshold, output drops below 4.8V and regulation is lost. At VIN = 3.2V, full 110mA output capability is guaranteed per datasheet specifications.

Can MP9218DGT-LF-P drive a 100mA load continuously at 5V with 3.3V input?

Yes-when VIN ≥ 3.2V, the MP9218DGT-LF-P delivers up to 110mA continuously at 5V. At 3.3V input, thermal performance remains within safe limits (TJ < 125°C) with proper PCB layout: 2-layer board with ≥100mm² GND copper and connected exposed pad.

Is an external flying capacitor mandatory, and what value is specified?

Yes-an external 0.22µF ceramic capacitor is mandatory between CP and CN pins. This value is optimized for 1.35MHz operation and ensures stable charge transfer; deviation causes efficiency loss, increased ripple, or startup failure.

Does MP9218DGT-LF-P require output capacitance, and how much is needed?

Yes-output capacitance is required. For loads ≤60mA, use 2.2µF ceramic; for >60mA, use 10µF. These values ensure stability and limit output ripple to ≤30mV. X5R/X7R dielectrics with 10V rating are recommended.

How does the EN pin behave during logic-level control?

The EN pin is active-high with 1.5V turn-on threshold and 0.4V turn-off threshold. When pulled below 0.4V, shutdown current drops to 0.1–1µA. No external pull-down is needed-the internal leakage is <1µA, ensuring reliable state retention.

What protection mechanisms activate during a short circuit at the OUT pin?

During short circuit, the MP9218DGT-LF-P limits output current to ~60mA and holds output voltage near 0.5V. It does not latch off-operation resumes automatically once the short is removed and thermal conditions normalize.

Is the exposed thermal pad electrically connected, and how must it be handled?

Yes-the exposed pad is internally connected to GND. It must be soldered to a dedicated GND copper pour using ≥4 thermal vias (0.3mm diameter) to inner ground plane. Failure to do so degrades θ_JA from 80°C/W to >120°C/W, risking thermal shutdown at <60mA load.

MP9218DGT-LF-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 6-WFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Up

Output Configuration:: Positive

Topology:: Charge Pump

Output Type:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 2.8V

Voltage - Input (Max):: 5V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Current - Output:: 110mA

Frequency - Switching:: 1.35MHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 6-TQFN (2x2)

MP9218DGT-LF-P FAQ

1.How can I place an order for MP9218DGT-LF-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP9218DGT-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 MP9218DGT-LF-P reliable?

The price and inventory of MP9218DGT-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 MP9218DGT-LF-P is usually 5 days.

3.What payment methods are accepted for MP9218DGT-LF-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP9218DGT-LF-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP9218DGT-LF-P?

MP9218DGT-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP9218DGT-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 MP9218DGT-LF-P?

For technical support, including MP9218DGT-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP9218DGT-LF-P requirements.

6.How does Aetrix verify that MP9218DGT-LF-P is sourced from the original manufacturer or authorized distributors?

All MP9218DGT-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 MP9218DGT-LF-P meets industry standards.

7.What is the process for return or replacement of MP9218DGT-LF-P?

All MP9218DGT-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP9218DGT-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 MP9218DGT-LF-P part is unused and in its original packaging.

Return procedure for MP9218DGT-LF-P:

1.Submit a request within 90 days.

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

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