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Monolithic Power Systems Inc. MP2107ADN-LF
- Part No.:
- MP2107ADN-LF
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MP2107ADN-LF.pdf
- Description:
- IC REG BUCK ADJ 4A 8SOICE
- Quantity:
- Payment:
- Shipping:
Inventory:3,356
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Product details
Overview
MP2107ADN-LF from Monolithic Power Systems is a 4A, 6V synchronous step-down switching regulator in an 8-pin SOIC package with exposed pad. It operates from 2.7V to 6V input, delivers adjustable output down to 0.8V, integrates 60mΩ high- and low-side MOSFETs, and features 1.5MHz fixed-frequency PWM control with power good (POK) output - used for FPGA I/O supply regulation in telecom point-of-load applications.
For engineers reviewing the MP2107ADN-LF datasheet, MP2107ADN-LF pinout, MP2107ADN-LF application, or MP2107ADN-LF equivalent, this device supports precise voltage scaling for ASIC cores, requires external R1/R2 feedback network configuration, and enables frequency synchronization between 1MHz–2MHz via EN/SYNC pin - critical for noise-sensitive multi-rail systems.
Technical Context
The MP2107ADN-LF uses peak current-mode control with internal Type II compensation, eliminating need for external loop compensation components. Its transconductance error amplifier delivers 11.25A/V gain from COMP voltage to output current, simplifying stability design while supporting bandwidth up to 150kHz with ceramic output capacitors.
It implements cycle-by-cycle overcurrent protection on both high- and low-side switches, hiccup-mode short-circuit recovery with 30μs POK deglitch timing, and bootstrap-driven high-side gate drive referenced to SW node - requiring external BST capacitor between BS and SW pins for proper 100% duty-cycle capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 4A continuous - supports high-current FPGA I/O rails without external current boosting. |
| Input Voltage Range | 2.7V to 6V - compatible with single-cell Li-ion, USB PD, and 5V intermediate bus systems. |
| Switching Frequency | 1.5MHz fixed, synchronizable 1–2MHz - enables compact magnetics and reduces EMI in dense PCB layouts. |
| Feedback Reference | 0.800V ±2.4% - sets output voltage via external resistor divider; enables 0.8V–0.9×VIN adjustment range. |
| Power Good Threshold | ±10% output window with 30μs deglitch - provides reliable system-level power sequencing and fault detection. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload in enclosed industrial enclosures. |
| Shutdown Current | 1μA - minimizes battery drain in always-on standby subsystems. |
Pinout & Package
MP2107ADN-LF is housed in an 8-pin SOIC package with exposed thermal pad (SOIC8E), designed for enhanced heat dissipation in high-power density applications. The exposed pad must be soldered to a dedicated GND copper plane for optimal thermal performance and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback Input | Connects to resistive divider output; compares against internal 0.8V reference to regulate VOUT. |
| 2 GND | Ground Reference | Main signal and power ground; connects to exposed pad and input/output capacitor negatives. |
| 3 IN | Input Supply | Accepts 2.7–6V input; requires local 10–47μF ceramic decoupling capacitor near pin. |
| 4 BS | Bootstrap Supply | Connects to SW via 0.1μF ceramic capacitor; powers high-side gate driver during switching. |
| 5 VCC | Bias Supply | Internal logic supply; connect directly to VIN or stable 3.3–5V source with 1μF bypass cap. |
| 6 EN/SYNC | Enable & Sync Input | Logic-level enable (1.6V high / 0.4V low); accepts 1–2MHz external clock for frequency synchronization. |
| 7 SW | Switch Node | Connects to inductor and internal MOSFETs; high dv/dt node requiring short, low-inductance routing. |
| 8 POK | Power Good Output | Open-drain output pulled low when VOUT deviates >±10%; requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Enables compact, low-ESR output filtering without electrolytic bulk caps - improves reliability and transient response. |
| Integrated 60mΩ MOSFETs | Eliminates need for external Schottky diode in most 4A designs, reducing BOM count and board area. |
| Internal soft-start (120μs) | Prevents inrush current during power-up and ensures controlled output ramp; disables switching if VOUT is pre-biased. |
| Hiccup short-circuit protection | Shuts down and auto-restarts under sustained overload - prevents thermal runaway while maintaining system visibility. |
| Frequency synchronization | Allows alignment of switching edges across multiple regulators to avoid beat frequencies and simplify EMI filtering. |
Applications
| FPGA I/O Supply | ASIC Core Voltage Regulation |
|---|---|
|
Use Scenario: Providing stable 1.8V/4A rail to Xilinx Artix-7 FPGA banks with tight voltage tolerance and fast load transient response. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering regulated I/O voltage; manages dynamic current steps up to 3A/μs. Use Value: Internal compensation and 1.5MHz operation minimize output capacitance (47μF ceramic), reducing footprint by >40% vs. lower-frequency alternatives. |
Use Scenario: Generating 1.2V core supply for ARM-based SoCs in network edge routers with strict ripple (<15mV) requirements. IC Role / Device Role / Timing Role: Synchronous buck converter with POK output enabling safe processor boot sequence and brown-out detection. Use Value: ±10% POK window and 30μs deglitch ensure deterministic power sequencing without false triggers during startup or load transients. |
| Telecom Point-of-Load | Industrial LCD Display Backlight Driver |
|
Use Scenario: Converting 5V intermediate bus to 3.3V/4A for Ethernet PHY and SerDes interfaces in 1RU switch modules. IC Role / Device Role / Timing Role: High-efficiency DC-DC stage operating at 95% peak efficiency; synchronized to system clock to suppress conducted EMI. Use Value: 1–2MHz sync capability allows EMI energy to be shifted away from sensitive 2.4GHz/5GHz RF bands in co-located wireless systems. |
Use Scenario: Powering LED driver ICs in medical-grade LCD panels requiring low-noise, ripple-free 5V bias rails. IC Role / Device Role / Timing Role: Low-ripple buck regulator with all-ceramic output filter; operates in forced PWM mode for consistent switching frequency. Use Value: Fixed 1.5MHz frequency avoids audible noise and enables use of small 1μH inductors, reducing height to <3mm for slim display enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2108DN-LF | Same SOIC8E package but rated for 6A output; higher RDS(on) (45mΩ/35mΩ) and 2.2MHz switching frequency. | Supports higher current loads without parallel devices; requires smaller inductor but increases switching losses above 1.5MHz. | Select when >4A continuous load or tighter size constraints justify trade-off in light-load efficiency. |
| TPS54332DR | 3A rated, 6V input, 2.5MHz sync-capable; uses external compensation and lacks integrated POK output. | Requires additional components for loop tuning and power monitoring; better suited for cost-sensitive, non-safety-critical designs. | Choose only if design already uses TI ecosystem tools and can accommodate extra feedback components and discrete POK circuitry. |
Compared with MP2107ADN-LF, MP2108DN-LF offers higher current headroom at the expense of thermal margin in same SOIC8E footprint, while TPS54332DR sacrifices integration and monitoring features for broader vendor support - making MP2107ADN-LF optimal for space-constrained, self-contained 4A PoL designs requiring POK and minimal external parts.
Availability
MP2107ADN-LF is available at Aetrix Electronics and suitable for FPGA I/O supplies, telecom point-of-load regulation, and industrial LCD display power systems requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.
Supply support for MP2107ADN-LF 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 automotive applications.
The MP2107 series belongs to MPS's high-density DC-DC converter product line, engineered specifically for compact, high-efficiency point-of-load regulation in space-constrained networking, computing, and industrial equipment.
FAQ
What is the minimum recommended output capacitance for MP2107ADN-LF?
The datasheet specifies 47μF ceramic output capacitance for stable operation at 4A load. This value ensures sufficient phase margin and limits output voltage ripple to <15mV under full load. Using less than 33μF may cause instability or excessive overshoot during load transients, especially with X5R/X7R dielectrics rated for ≥6.3V.
Can MP2107ADN-LF operate without an external bootstrap capacitor?
No. The BS pin requires a 0.1μF ceramic capacitor connected directly to the SW pin to supply the high-side gate driver. Omitting this capacitor prevents proper high-side MOSFET turn-on, resulting in no output regulation and potential damage due to shoot-through current during switching transitions.
Does MP2107ADN-LF support forced PWM mode at light loads?
No. MP2107ADN-LF operates exclusively in continuous conduction mode (CCM) with fixed-frequency PWM control. It does not include pulse-skipping or discontinuous conduction mode (DCM) features, ensuring constant switching frequency across all load conditions - beneficial for predictable EMI filtering but less efficient below ~200mA.
How is the POK output configured for system monitoring?
POK is an open-drain output requiring an external pull-up resistor (typically 10kΩ to 3.3V or 5V). It asserts LOW when VOUT falls outside ±10% of nominal value, with built-in 30μs deglitch to reject noise-induced false trips. No external components are needed beyond the pull-up for basic power-good signaling.
What is the maximum allowable input voltage for MP2107ADN-LF?
The absolute maximum input voltage is +6.5V, but the recommended operating range is 2.7V to 6V. Exceeding 6V risks permanent damage to the internal MOSFETs and gate drivers. For 6V nominal inputs, a 6.3V-rated input capacitor and careful layout to limit ringing are essential to stay within safe operating limits.
Is MP2107ADN-LF pin-compatible with MP2107DQ-LF?
No. MP2107ADN-LF uses an 8-pin SOIC package with VCC and POK pins, while MP2107DQ-LF is a 10-pin QFN with different pinout (no VCC, dual SW/GND pins, exposed pad on bottom). Layout, thermal design, and external component placement are not interchangeable between these packages.
What thermal derating applies to MP2107ADN-LF at 85°C ambient?
With θJA = 50°C/W and max junction temperature of 125°C, the maximum continuous power dissipation at TA = 85°C is 0.8W. At 4A output and 5V input, this corresponds to ~200mA max load unless the exposed pad is fully soldered to ≥2cm² of inner-layer GND copper - which reduces effective θJA and enables full 4A operation at 85°C.
MP2107ADN-LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- 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):
- 0.8V
- Voltage - Output (Max):
- 5.4V
- Current - Output:
- 4A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOICE
MP2107ADN-LF FAQ
1.How can I place an order for MP2107ADN-LF through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2107ADN-LF 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 MP2107ADN-LF reliable?
The price and inventory of MP2107ADN-LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2107ADN-LF is usually 5 days.
3.What payment methods are accepted for MP2107ADN-LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2107ADN-LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2107ADN-LF?
MP2107ADN-LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2107ADN-LF 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 MP2107ADN-LF?
For technical support, including MP2107ADN-LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2107ADN-LF requirements.
6.How does Aetrix verify that MP2107ADN-LF is sourced from the original manufacturer or authorized distributors?
All MP2107ADN-LF 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 MP2107ADN-LF meets industry standards.
7.What is the process for return or replacement of MP2107ADN-LF?
All MP2107ADN-LF units undergo pre-shipment inspection (PSI). If there is an issue with MP2107ADN-LF, 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 MP2107ADN-LF part is unused and in its original packaging.
Return procedure for MP2107ADN-LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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