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Monolithic Power Systems Inc. MP2130DG-LF-Z
- Part No.:
- MP2130DG-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MP2130DG-LF-Z.pdf
- Description:
- IC REG BUCK ADJ 3.5A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:905
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Product details
Overview
MP2130DG-LF-Z from Monolithic Power Systems is a synchronous step-down DC/DC converter IC with integrated 50mΩ/40mΩ MOSFETs, delivering 3.5A continuous output from 2.7V–6V input, regulating down to 0.6V with 1.2MHz fixed-frequency COT control-used in Li+-powered portable instruments and handheld devices requiring compact, high-efficiency power conversion.
For engineers reviewing the MP2130DG-LF-Z datasheet, MP2130DG-LF-Z pinout, MP2130DG-LF-Z application, or MP2130DG-LF-Z equivalent, key selection criteria include its QFN12 (2×2mm) footprint, 100% duty-cycle dropout capability, EN/PG sequencing support, thermal shutdown, and hiccup-mode short-circuit protection.
Technical Context
The MP2130DG-LF-Z employs Constant-On-Time (COT) control with input-voltage feedforward to maintain stable 1.2MHz switching across 2.7V–6V input and 0.6V–5.5V output ranges, enabling fast transient response without external compensation. Its dual-MOSFET architecture integrates a 50mΩ P-channel high-side switch and 40mΩ N-channel low-side switch.
Protection features include cycle-by-cycle current limiting (typ. 4.5A), thermal shutdown at 150°C with 30°C hysteresis, short-circuit hiccup recovery, and auto-discharge during shutdown. The PG pin provides open-drain power-good signaling with ±10% FB window and internal 500kΩ pull-up to VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports single-cell Li+ battery (3.0–4.2V) and USB-powered systems without input pre-regulation. |
| Output Current | 3.5A continuous - sufficient for core logic rails in portable instrumentation and wireless cards. |
| Switching Frequency | 1.2MHz - enables use of sub-2.2µH inductors and <10µF ceramic output capacitors for ultra-compact designs. |
| Feedback Voltage | 0.600V ±1.5% - sets precise output regulation via resistor divider; allows 0.6V minimum VOUT for modern low-voltage SoCs. |
| Internal MOSFET RDS(on) | 50mΩ (PCH) / 40mΩ (NCH) - minimizes conduction loss at full load, supporting >95% peak efficiency at 5V→1.2V/3A. |
| Power Good Threshold | ±10% of 0.6V FB voltage - ensures reliable system power sequencing and rail monitoring without external comparators. |
| Soft-Start Time | 1ms typical - prevents inrush current and output overshoot during cold-start in battery-powered devices. |
Pinout & Package
MP2130DG-LF-Z is housed in an ultra-small QFN12 package (2mm × 2mm, 0.5mm pitch) with exposed thermal pad for enhanced power dissipation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10 PVIN/VIN | Power input for FETs and controller | PVIN connects internally to VIN; both pins must be tied to input supply with low-inductance path to minimize switching noise. |
| 2, 11 SW | Switch node | Drives external inductor; requires tight layout with minimal loop area to reduce EMI and voltage ringing. |
| 3, 12 PGND | Power ground | High-current return path for MOSFETs; must be connected directly to thermal pad and input/output capacitor grounds. |
| 4 AGND | Analog ground | Quiet reference for feedback and control circuits; isolated from PGND except at single-point star ground near IC. |
| 5 NC | No connect | Must remain unconnected-no internal connection or function; floating or grounded causes undefined behavior. |
| 6 OUT | Output voltage sense | Monitors regulated output rail; used with internal comparator for hiccup-mode short-circuit detection. |
| 7 FB | Feedback input | Sets output voltage via resistor divider; 10nA bias current enables high-value resistors (e.g., 200kΩ/200kΩ for 1.2V). |
| 8 EN | Enable control | Active-high logic input (1.2V threshold); internal 1MΩ pulldown allows default-disable when left floating. |
| 9 PG | Power good indicator | Open-drain output with 500kΩ internal pull-up to VIN; asserts high only when FB is within ±10% of 0.6V. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-On-Time (COT) control | Enables stable operation without external compensation components and delivers <10µs load transient response at 3A step. |
| 100% duty-cycle operation | Allows seamless dropout mode down to VIN – VDROP ≈ VOUT, critical for maintaining regulation as Li+ battery discharges to 2.7V. |
| Integrated MOSFETs (50mΩ/40mΩ) | Eliminates external power switches and reduces BOM count; achieves >80% efficiency at 10mA light load via proprietary DCM control. |
| EN and PG pins | Supports multi-rail power sequencing in portable systems-EN controls startup timing, PG confirms valid output before downstream enable. |
| Hiccup-mode short-circuit protection | Limits average power during fault: disables output, discharges soft-start cap, then retries-prevents thermal runaway and enables self-recovery. |
Applications
| Portable Instrumentation | Wireless Network Cards |
|---|---|
Use Scenario: Powering handheld multimeters, thermal imagers, and portable oscilloscopes powered by single-cell Li+ batteries. IC Role / Device Role / Timing Role: Primary buck regulator supplying 1.2V/1.8V core voltage to microcontrollers and ADCs. Use Value: 95% peak efficiency extends battery runtime; 2×2mm QFN footprint saves board space in sealed enclosures. |
Use Scenario: Regulating 3.3V/1.2V rails for Wi-Fi/BT modules on mini-PCIe or M.2 form-factor cards. IC Role / Device Role / Timing Role: High-frequency synchronous buck converter enabling compact RF subsystems with low EMI. Use Value: 1.2MHz switching avoids interference with 2.4GHz ISM band; PG signal synchronizes module initialization. |
| Low-Voltage I/O Systems | Optical Storage Drives |
Use Scenario: Generating 0.6V–1.8V logic supplies for FPGA I/O banks, USB PHYs, and sensor interfaces in embedded edge devices. IC Role / Device Role / Timing Role: Precision adjustable buck converter with 0.6V reference for adaptive voltage scaling. Use Value: ±1.5% FB accuracy ensures compliance with JEDEC DDR/LPDDR VDDQ tolerances; light-load efficiency >80% reduces idle power. |
Use Scenario: Supplying regulated 3.3V and 1.2V rails to spindle motor drivers and optical pickup ICs in portable DVD/Blu-ray drives. IC Role / Device Role / Timing Role: Main power stage delivering 3.5A peak current during disc spin-up and laser activation. Use Value: Thermal shutdown and hiccup protection prevent damage during mechanical stall or lens jam conditions. |
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 |
|---|---|---|---|
| MP2184GQ-Z | Successor device: 4A output, 2.5V–6V input, 500kHz–2.2MHz programmable frequency, improved light-load efficiency. | Designed for newer designs requiring higher current or frequency flexibility; not pin-compatible due to different pinout and package (QFN13). | Select MP2184GQ-Z for new designs needing extended input range or programmable switching frequency; MP2130DG-LF-Z remains viable for legacy replacement and cost-sensitive volume production. |
| RT7297BZSP | Richtek part: 3A output, 4.5V–18V input, 500kHz fixed frequency, external compensation required. | Higher input range suits 12V industrial inputs; lacks COT control, requiring external RC network for stability tuning. | Choose RT7297BZSP only if operating above 6V input or requiring automotive-grade qualification; MP2130DG-LF-Z offers superior integration for ≤6V battery systems. |
Compared with MP2184GQ-Z, MP2130DG-LF-Z trades higher current and frequency flexibility for smaller size and lower BOM count; versus RT7297BZSP, it delivers better transient response and simpler design-in at the cost of input voltage range limitation.
Availability
MP2130DG-LF-Z is available at Aetrix Electronics and suitable for portable instrumentation, wireless network cards, low-voltage I/O systems, and optical storage drives requiring stable component supply with RoHS-compliant packaging and traceable sourcing.
Supply support for MP2130DG-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 mixed-signal ICs for power management, motion control, and interface applications.
The MP2130 belongs to MPS's high-frequency synchronous buck converter product line, engineered specifically for space-constrained, battery-powered portable electronics demanding high efficiency, small footprint, and robust protection.
FAQ
What is the maximum recommended output current for MP2130DG-LF-Z under continuous operation?
The MP2130DG-LF-Z is rated for 3.5A continuous output current at TA = +25°C with proper PCB thermal design (4-layer board, 1-in² copper pour). Derating is required above +25°C ambient: at +85°C, max continuous current drops to ~2.2A due to thermal limits and junction temperature constraints (TJ ≤ 125°C).
Does MP2130DG-LF-Z require external compensation components?
No. The MP2130DG-LF-Z uses Constant-On-Time (COT) control architecture, which eliminates the need for external compensation networks. Stability is inherently achieved through input-voltage feedforward and internal ramp generation-only FB resistor divider, input/output capacitors, and inductor are required.
How does the PG (Power Good) pin behave during startup and fault conditions?
The PG pin is an open-drain output with internal 500kΩ pull-up to VIN. It asserts high only when FB voltage remains within ±10% of 0.6V for ≥90µs. During startup, PG goes high after soft-start completes and regulation is established; during overcurrent, short-circuit, or UVLO, PG pulls low immediately to signal fault.
Can MP2130DG-LF-Z operate with 100% duty cycle, and what is the minimum input voltage for regulation at 1.2V output?
Yes. MP2130DG-LF-Z supports 100% duty cycle in dropout mode. At 1.2V output, regulation is maintained down to VIN ≈ 1.25V (accounting for 50mΩ/40mΩ RDS(on) drop and internal headroom), enabling operation as Li+ battery discharges to 2.7V while powering 1.2V loads.
What is the purpose of the separate AGND and PGND pins, and how should they be routed?
AGND carries low-noise analog reference currents (FB, EN, PG), while PGND handles high di/dt switching currents (SW, PVIN, PGND pins). They must be kept separate on the PCB and joined at a single point near the IC's thermal pad to prevent noise coupling into the feedback path and ensure stable regulation.
Is MP2130DG-LF-Z suitable for automotive applications?
No. MP2130DG-LF-Z is specified for industrial temperature range (–40°C to +85°C) and lacks AEC-Q100 qualification, automotive-grade screening, or extended voltage tolerance (e.g., load dump protection). It is intended for consumer and industrial portable equipment-not automotive ECUs or infotainment systems.
What happens during short-circuit events, and how does recovery work?
Upon short-circuit detection (via current limit or OUT pin sensing), MP2130DG-LF-Z enters hiccup mode: it disables switching, discharges the soft-start capacitor, waits briefly, then attempts soft-start again. This cycle repeats until the fault clears, limiting average power dissipation and preventing thermal damage.
MP2130DG-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-PowerVFQFN
- 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):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (2x2)
MP2130DG-LF-Z FAQ
1.How can I place an order for MP2130DG-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2130DG-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 MP2130DG-LF-Z reliable?
The price and inventory of MP2130DG-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 MP2130DG-LF-Z is usually 5 days.
3.What payment methods are accepted for MP2130DG-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2130DG-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2130DG-LF-Z?
MP2130DG-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2130DG-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 MP2130DG-LF-Z?
For technical support, including MP2130DG-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2130DG-LF-Z requirements.
6.How does Aetrix verify that MP2130DG-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP2130DG-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 MP2130DG-LF-Z meets industry standards.
7.What is the process for return or replacement of MP2130DG-LF-Z?
All MP2130DG-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2130DG-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 MP2130DG-LF-Z part is unused and in its original packaging.
Return procedure for MP2130DG-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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