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Monolithic Power Systems Inc. MP3213DH-LF-Z
- Part No.:
- MP3213DH-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MP3213DH-LF-Z.pdf
- Description:
- IC REG BOOST ADJ 3.5A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,970
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Product details
Overview
MP3213DH-LF-Z from Monolithic Power Systems is a current-mode, fixed-frequency boost DC-DC converter with an integrated 3.5A/0.18Ω/25V N-channel MOSFET switch, supporting selectable 700kHz or 1.3MHz operation, 2.5V–22V input range, and up to 22V output - delivering 12V at 500mA from a 5V source for LCD bias and portable display power rails.
For engineers reviewing the MP3213DH-LF-Z datasheet, MP3213DH-LF-Z pinout, MP3213DH-LF-Z application, or MP3213DH-LF-Z equivalent, this device is selected for compact high-efficiency step-up regulation in space-constrained battery-powered systems requiring programmable soft-start, external compensation, and robust thermal/overcurrent protection.
Technical Context
The MP3213DH-LF-Z implements constant-frequency peak-current-mode control with internal error amplifier (transconductance = 350 μmho, gain = 1000 V/V) and voltage reference (1.25V ±2.5%). Its dual-frequency selection (via FSEL pin) enables trade-offs between filter size and efficiency across load conditions.
It features a dedicated COMP pin for full loop compensation using RC networks, supports continuous conduction mode (CCM) operation, and includes right-half-plane zero (RHPZ) awareness in stability design - critical for maintaining phase margin above 40° at crossover frequencies below RHPZ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Rating | 3.5A peak current limit, 0.18Ω RDS(on) - enables high-efficiency 500mA@12V output from 5V input with minimal conduction loss. |
| Input Voltage Range | 2.5V to 22V - supports single-cell Li-ion (2.7–4.2V), USB 5V, and industrial 12–24V rails without pre-regulation. |
| Output Voltage Range | 3V to 22V - configurable via FB resistor divider; stable 12V generation confirmed at 500mA load with 5V input. |
| Switching Frequency | 700kHz or 1.3MHz (pin-selectable) - allows optimization of inductor size (10µH @700kHz, 4.7µH @1.3MHz) and EMI filtering. |
| Feedback Reference | 1.25V ±2.5% (25°C), ±30ppm/°C drift - ensures accurate output regulation across temperature in precision display bias applications. |
| Soft-Start Control | 6µA constant-current source into SS pin - enables precise startup time control (e.g., 75µs with 1nF capacitor) to limit inrush. |
| Protections | UVLO (2.45V rising threshold, 100mV hysteresis), thermal shutdown (160°C), and cycle-by-cycle current limiting - prevents damage during fault conditions. |
Pinout & Package
MP3213DH-LF-Z is housed in an 8-pin MSOP package with exposed thermal pad (θJA = 80°C/W, θJC = 12°C/W), optimized for low-profile portable designs requiring efficient heat dissipation on 2-layer PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (COMP) | Compensation node | Connects external RC network to set loop dynamics; directly drives error amplifier output for stability tuning with ceramic output caps. |
| 2 (FB) | Feedback input | Senses output via resistor divider; internal 1.25V reference enables precise output voltage setting (e.g., 12V with 80kΩ/10kΩ divider). |
| 3 (EN) | Enable control | Active-high logic input (1.5V threshold); ties to VIN for automatic startup or controlled sequencing in multi-rail systems. |
| 4 (GND) | Power and signal ground | Primary return path; exposed pad must be soldered to PCB ground plane for thermal and electrical performance. |
| 5 (SW) | Switch node | Drain of internal MOSFET; connects to inductor and Schottky diode - carries high dv/dt switching waveform; requires tight layout. |
| 6 (IN) | Input supply | Accepts 2.5–22V; requires local 4.7µF+ ceramic bypass capacitor placed adjacent to minimize input ripple and EMI. |
| 7 (FSEL) | Frequency select | Tied to GND for 700kHz or VIN for 1.3MHz - selects optimal switching frequency based on inductor availability and noise requirements. |
| 8 (SS) | Soft-start timing | Charged by 6µA current source; voltage clamps COMP during startup to limit inductor current ramp and prevent input droop. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.5A/0.18Ω MOSFET | Eliminates external switch and driver, reducing BOM count and board area while maintaining >85% efficiency at 500mA load. |
| Pin-selectable switching frequency | Enables hardware-based optimization: 700kHz for higher efficiency at medium loads, 1.3MHz for smaller magnetics in ultra-compact layouts. |
| Programmable soft-start | Prevents input inrush and output overshoot during power-up - essential for systems with sensitive downstream circuitry or limited source impedance. |
| External compensation interface | Allows full control over loop bandwidth and phase margin using standard RC components - critical for stable operation with low-ESR ceramic capacitors. |
| Wide input/output voltage range | Supports direct integration into diverse platforms: 2.5V coin-cell–powered wearables, 5V USB peripherals, and 12V industrial displays. |
Applications
| LCD Panel Bias Supply | Portable Medical Device Display |
|---|---|
|
Use Scenario: Generating 12V–18V bias for TFT-LCD gate drivers and source drivers from a 3.3V or 5V system rail. IC Role / Device Role / Timing Role: Primary step-up regulator providing regulated high-voltage rail with fast transient response to backlight and gate drive load steps. Use Value: Enables compact, low-noise panel power with <100mV output ripple (at 1.3MHz) and no need for external MOSFET or controller IC. |
Use Scenario: Powering monochrome or color LCD modules in handheld diagnostic tools powered by single-cell Li-ion batteries (2.7–4.2V). IC Role / Device Role / Timing Role: Efficient boost converter maintaining stable display voltage across battery discharge curve, with UVLO preventing brownout-induced artifacts. Use Value: Delivers 12V@300mA with >88% efficiency at 3.6V input, extending battery life while meeting IEC 60601-1 leakage and EMI requirements. |
| Digital Camera Flash LED Driver Support | Industrial Handheld Terminal Backlight |
|
Use Scenario: Providing auxiliary 5V–9V rail for flash LED driver ICs in compact digital still/video cameras. IC Role / Device Role / Timing Role: Secondary boost stage supplying clean, well-regulated voltage to flash driver ICs during short-duration high-current pulses. Use Value: Maintains <±1% output regulation during 100ms flash bursts due to fast current-mode control and programmable soft-start suppression of startup transients. |
Use Scenario: Driving CCFL or LED backlights in ruggedized industrial PDAs operating from 5V USB or 12V vehicle power. IC Role / Device Role / Timing Role: High-reliability boost converter with thermal shutdown and current limiting - ensuring safe operation under extended ambient temperatures (−40°C to +85°C). Use Value: Supports 22V max output for legacy CCFL inverters and includes exposed-pad thermal management for continuous 500mA operation in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 5.5A switch, fixed 1MHz frequency, no FSEL or COMP pins - fully integrated but less flexible loop tuning. | Preferred where board space is extreme and compensation is not required; lacks frequency selection for EMI tailoring. | Select when prioritizing simplicity over loop optimization and needing >500mA output capability. |
| RT8535GJ6 | 3A switch, 1.5MHz fixed frequency, no soft-start programming - uses internal compensation and lacks FSEL/SS flexibility. | Better suited for cost-sensitive consumer devices where adjustable startup timing and frequency are unnecessary. | Choose for high-volume, low-cost applications where 3A output suffices and design reuse of fixed-compensation layout is desired. |
Compared with TPS61088RHLR and RT8535GJ6, the MP3213DH-LF-Z offers unique field-programmable frequency selection and full external compensation - enabling precise EMI control and stability optimization in demanding portable and industrial displays where layout constraints and thermal margins are critical.
Availability
MP3213DH-LF-Z is available at Aetrix Electronics and suitable for LCD display bias supplies, portable medical device power rails, digital camera auxiliary rails, and industrial handheld terminal backlights requiring stable component supply across production lifecycles.
Supply support for MP3213DH-LF-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 MP3213 belongs to MPS's high-efficiency boost converter product line, designed specifically for space-constrained portable and display applications requiring wide input range, integrated power switches, and flexible loop control.
FAQ
What input voltage range does the MP3213DH-LF-Z support?
The MP3213DH-LF-Z operates from 2.5V to 22V input, verified per Absolute Maximum Ratings and Recommended Operating Conditions. It reliably starts up at 2.45V (UVLO rising threshold) and sustains regulation down to 2.5V across temperature, making it compatible with single-cell Li-ion, USB 5V, and industrial 12V supplies.
How is switching frequency selected on the MP3213DH-LF-Z?
Frequency is selected via the FSEL pin: tie FSEL to GND for 700kHz operation (typ. 700kHz, min 560kHz/max 840kHz), or to IN (with 100kΩ pull-up if VIN > 6V) for 1.3MHz operation (typ. 1.3MHz, min 1.1MHz/max 1.5MHz). This pin is sampled at startup and remains fixed until reset.
Can the MP3213DH-LF-Z drive a 12V/500mA load from a 5V input?
Yes - the datasheet confirms 12V at 500mA output from a 5V input under typical conditions (VIN=5V, VOUT=12V, TA=25°C), achieving ≥85% efficiency. This is enabled by the low 0.18Ω RDS(on), 3.5A current limit, and optimized current-mode control architecture.
What is the purpose of the COMP pin, and how is it used?
The COMP pin is the output of the internal transconductance error amplifier and serves as the compensation node for the feedback loop. It connects to an external RC network (e.g., 15kΩ + 1nF) between COMP and GND to set dominant pole and zero locations - essential for stabilizing the converter with low-ESR ceramic output capacitors.
Does the MP3213DH-LF-Z include thermal protection?
Yes - it incorporates thermal shutdown at 160°C (guaranteed by design), which disables the internal MOSFET until junction temperature falls below hysteresis threshold. This protection is independent of current limit and UVLO, and is validated across process corners and temperature ranges per datasheet testing.
Is soft-start programmable, and how is it implemented?
Yes - soft-start is programmable via an external capacitor on the SS pin. A 6µA internal current source charges the capacitor; soft-start ends when SS reaches 0.45V. For example, a 1nF capacitor yields ~75µs startup time. Leaving SS open disables soft-start, allowing immediate regulation.
What package type is used for MP3213DH-LF-Z?
The MP3213DH-LF-Z uses an 8-pin MSOP package with exposed thermal pad (JEDEC MO-187, variation AA-T), measuring 2.90mm × 4.60mm × 1.10mm max height. The exposed pad must be soldered to a PCB thermal pad for optimal thermal performance (θJA = 80°C/W).
MP3213DH-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- 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):
- 2.5V
- Voltage - Input (Max):
- 22V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 700kHz, 1.3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
MP3213DH-LF-Z FAQ
1.How can I place an order for MP3213DH-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP3213DH-LF-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 MP3213DH-LF-Z reliable?
The price and inventory of MP3213DH-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP3213DH-LF-Z is usually 5 days.
3.What payment methods are accepted for MP3213DH-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP3213DH-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP3213DH-LF-Z?
MP3213DH-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP3213DH-LF-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 MP3213DH-LF-Z?
For technical support, including MP3213DH-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP3213DH-LF-Z requirements.
6.How does Aetrix verify that MP3213DH-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP3213DH-LF-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 MP3213DH-LF-Z meets industry standards.
7.What is the process for return or replacement of MP3213DH-LF-Z?
All MP3213DH-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP3213DH-LF-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 MP3213DH-LF-Z part is unused and in its original packaging.
Return procedure for MP3213DH-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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