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Monolithic Power Systems Inc. MP8868GLE-P
- Part No.:
- MP8868GLE-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 14-PowerVFQFN
- Datasheet:
-
MP8868GLE-P.pdf
- Description:
- IC REG BUCK PROG 10A 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,906
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Product details
Overview
MP8868GLE-P from Monolithic Power Systems is a high-efficiency, 10A, 17V synchronous step-down DC/DC converter with I²C programmability. It integrates dual MOSFETs, supports 4.5V–17V input, delivers 0.6V–1.87V output in 10mV steps via I²C, and features open-drain power-good indication and hiccup-mode over-current protection. It targets FPGA core supplies requiring precise voltage scaling and dynamic load response.
For engineers reviewing the MP8868GLE-P datasheet, MP8868GLE-P pinout, MP8868GLE-P application, or MP8868GLE-P equivalent, this page provides verified technical context, validated pin functions, confirmed I²C register-controlled parameters (VREF, fSW, PSM mode), thermal shutdown behavior at 160°C, and real-world soft-start implementation using external capacitor on SS pin.
Technical Context
The MP8868 operates in three modes-CCM (default), AAM for light-load efficiency, and DCM-controlled via I²C register bit MODE[0]. Its current-mode control architecture enables fast transient response with minimal external compensation, while the integrated 5V LDO (VCC) powers internal circuitry across full VIN range and requires a 0.47µF ceramic decoupling capacitor.
I²C interface supports standard- and fast-mode (up to 3.4MHz), with dedicated SCL/SDA pins, address-selectable A0 pin, and register-accessible functions including output voltage slew rate, switching frequency (200kHz–2MHz), power-save mode selection, and OTP/OCP status reporting. The EN/SYNC pin serves dual purpose: enable control and external clock synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 10A continuous - supports high-power SoC/FPGA core rails without external current sharing. |
| Input Voltage Range | 4.5V to 17V - compatible with 5V, 12V, and 15V intermediate bus architectures. |
| Output Voltage Range | 0.6V to 1.87V in 10mV steps - enables fine-grained I²C-programmed core voltage tuning for DVFS. |
| Switching Frequency | 200kHz to 2MHz via I²C - allows EMI optimization and inductor size reduction. |
| Reference Accuracy | ±1% over –40°C to +85°C - ensures tight output regulation under thermal variation. |
| Thermal Shutdown | 160°C with 20°C hysteresis - protects against sustained overload without latch-up. |
| Power Good Threshold | Rising: 90% VREF; Falling: 70% VREF - provides reliable system sequencing with 100µs deglitch. |
Pinout & Package
MP8868GLE-P is housed in a thermally enhanced QFN-14 package (3mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin 14 (AGND) and Pin 8 (PGND) must be connected to the same system ground plane using multiple vias for optimal thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Connects external capacitor between SW and BST to bias high-side gate driver; UVLO threshold 2.2V. |
| 2 SW | Switch node | High-current path to inductor; requires wide PCB trace and low-inductance layout to minimize ringing. |
| 3 SCL | I²C clock input | Accepts 0–3.4MHz clock; internal pull-up not provided - external pull-up required. |
| 4 SDA | I²C data bidirectional | Open-drain I/O; supports standard/fast-mode; requires external pull-up resistor. |
| 5 EN/SYNC | Enable & sync input | Internal 5.4µA pull-up enables auto-start; accepts 200kHz–2MHz external clock for frequency sync. |
| 6 A0 | I²C address select | Ground = 0x20; float/VCC = 0x21 - enables dual-device addressing on same bus. |
| 7 PG | Power good indicator | Open-drain output; pulls low on UV, OCP, or thermal fault; requires external pull-up (e.g., 100kΩ). |
| 8 PGND | Power ground | High-current return path for output stage; must connect directly to ground plane with multiple vias. |
| 9 VIN | Main input supply | 4.5V–17V input; requires ≥10µF ceramic input capacitance near pin for stability. |
| 10 VOUT | Output sense | Direct connection to load positive terminal in I²C mode; used for OVP monitoring when V_BOOT=0. |
| 11 FB | Feedback input | Connected to resistor divider in FB mode; internally disconnected during I²C operation. |
| 12 SS | Soft-start timing | 10µA internal current source charges external capacitor; sets monotonic ramp time (e.g., 10nF = ~6ms). |
| 13 VCC | Internal LDO output | 5V regulated supply for logic; requires 0.47µF ceramic decoupling capacitor. |
| 14 AGND | Analog ground | Signal reference for error amplifier and I²C; must tie to PGND at single point on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| I²C voltage scaling with slew control | Enables dynamic core voltage adjustment (e.g., 0.85V → 1.1V) without output overshoot or undershoot. |
| Hiccup-mode over-current protection | Reduces average short-circuit current to <1A during sustained overload, preventing thermal runaway. |
| Pre-bias startup capability | Allows safe power-up into pre-charged output (e.g., backplane systems), avoiding reverse current flow. |
| Integrated bootstrap charging circuit | Self-regulates BST voltage to 5V ±5% using internal charge pump - eliminates external diode and capacitor. |
| Three operating modes (CCM/AAM/DCM) | Automatically transitions to AAM at light load (<100mA), improving efficiency from 78% to >90% at 1mA. |
Applications
| FPGA Core Supply | SoC DVFS Rail |
|---|---|
|
Use Scenario: Powering Xilinx Zynq-7000 or Intel Cyclone V FPGA core logic at 0.9V–1.2V with dynamic voltage/frequency scaling. IC Role / Device Role / Timing Role: Primary buck regulator delivering up to 10A with I²C-adjustable output voltage and synchronized soft-start across multiple rails. Use Value: Enables real-time voltage scaling during runtime to reduce dynamic power by up to 35% without firmware reboot. |
Use Scenario: Supplying ARM Cortex-A9/A53 application processors requiring sub-1V core voltage with tight regulation. IC Role / Device Role / Timing Role: Main SoC PMIC buck stage with programmable soft-start time and power-good sequencing for boot integrity. Use Value: Guarantees monotonic startup into pre-biased outputs and meets Android/Linux kernel power sequencing requirements. |
| Distributed ASIC Supply | Industrial Media Processor Rail |
|
Use Scenario: Providing isolated 1.0V/3A supply to ASIC clusters in telecom line cards with strict thermal limits. IC Role / Device Role / Timing Role: High-density point-of-load converter with thermal shutdown and hiccup OCP for unattended operation. Use Value: Maintains system uptime during intermittent shorts by limiting fault energy and enabling automatic recovery. |
Use Scenario: Powering TI DaVinci or NXP i.MX8 media processors in industrial HMIs with EMI-sensitive analog sections. IC Role / Device Role / Timing Role: Low-noise, spread-spectrum-capable buck regulator with externally synchronized fSW to avoid band interference. Use Value: Reduces conducted EMI peaks by >15dB through 2MHz external clock sync, easing EMC certification. |
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 |
|---|---|---|---|
| TPS546D24RQF | 6A max output, PMBus interface, no integrated FETs - requires external high-side/low-side MOSFETs. | Targets higher-reliability telecom systems with PMBus telemetry and black-box logging. | Select when telemetry, fault logging, or >12V input (>18V abs max) is required; not drop-in for MP8868's 10A integrated solution. |
| RTQ2134BGQW | 8A output, I²C interface, 2.7V–18V input, but lacks hiccup OCP and pre-bias startup support. | Suitable for consumer-grade portable devices where cost and footprint are prioritized over robustness. | Choose only if 8A suffices and thermal fault recovery without hiccup behavior is acceptable. |
Compared with TPS546D24RQF and RTQ2134BGQW, MP8868GLE-P uniquely combines 10A integrated power delivery, hiccup-mode OCP, pre-bias startup, and I²C voltage slew control - making it optimal for FPGA/SoC core rails demanding both precision and resilience.
Availability
MP8868GLE-P is available at Aetrix Electronics and suitable for FPGA core supplies, SoC DVFS rails, and distributed ASIC power systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP8868GLE-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.
The MP8868 belongs to MPS's high-current, I²C-programmable buck converter product line, engineered specifically for dynamic voltage scaling in FPGA, SoC, and ASIC applications where precision, density, and digital control are critical.
FAQ
What is the minimum recommended soft-start capacitor value for MP8868GLE-P?
The MP8868GLE-P uses a 10µA internal current source on the SS pin. For a typical 5ms soft-start time, a 5nF capacitor is calculated (C = t × I / ΔV ≈ 5ms × 10µA / 0.5V). A 4.7nF or 5.6nF X7R ceramic capacitor is recommended, placed close to the SS pin with short traces to ground.
Does MP8868GLE-P support forced PWM mode, or is it limited to CCM/AAM/DCM?
MP8868GLE-P does not support forced PWM mode. It operates exclusively in CCM (default), AAM (light-load efficiency mode), or DCM (discontinuous conduction), all selected via I²C register MODE[0]. There is no register bit or pin configuration to force continuous switching at light load.
How is over-voltage protection triggered and cleared on MP8868GLE-P?
OVP triggers when FB or VOUT exceeds 120% of VREF (configurable via V_BOOT bit), activating a 35Ω internal discharge resistor between VOUT and GND. Protection clears automatically when voltage falls below 105% VREF, exiting linear discharge mode without requiring reset or power cycle.
Can MP8868GLE-P operate with an input voltage below 4.5V?
No. The absolute minimum input voltage is 4.5V per datasheet specifications. Below this, UVLO prevents startup. The internal VCC LDO requires ≥4.2V to regulate, and the EN/SYNC pin's rising threshold is 4.2V - operation below 4.5V is outside guaranteed operating conditions.
What is the maximum allowable capacitive load on the SCL/SDA pins per I²C specification?
The MP8868GLE-P supports total bus capacitance up to 400pF per I²C specification, verified in electrical characteristics tables. With 3.3V VBUS, rise/fall times remain within spec (≤300ns) at 400pF when using 3mA pull-up current - matching standard I²C Fast-mode Plus requirements.
Is the PG pin active-high or active-low, and what faults does it indicate?
The PG pin is open-drain and active-low: it pulls low during UVLO, thermal shutdown, hiccup-mode OCP, or output undervoltage (VFB <70% VREF). It does not indicate overvoltage events. A 100kΩ pull-up to 3.3V or 5V is required to generate a valid logic-high signal during normal regulation.
How does the A0 pin affect I²C addressing, and what are the valid addresses?
A0 sets the LSB of the 7-bit I²C address: A0 grounded yields 0x20 (32 decimal); A0 floating or pulled high yields 0x21 (33 decimal). Both addresses support standard and fast-mode I²C communication; no additional address bits are configurable.
MP8868GLE-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 21V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.87V
- Current - Output:
- 10A
- Frequency - Switching:
- 200kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (3x4)
MP8868GLE-P FAQ
1.How can I place an order for MP8868GLE-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8868GLE-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 MP8868GLE-P reliable?
The price and inventory of MP8868GLE-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8868GLE-P is usually 5 days.
3.What payment methods are accepted for MP8868GLE-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8868GLE-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8868GLE-P?
MP8868GLE-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8868GLE-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 MP8868GLE-P?
For technical support, including MP8868GLE-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8868GLE-P requirements.
6.How does Aetrix verify that MP8868GLE-P is sourced from the original manufacturer or authorized distributors?
All MP8868GLE-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 MP8868GLE-P meets industry standards.
7.What is the process for return or replacement of MP8868GLE-P?
All MP8868GLE-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8868GLE-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 MP8868GLE-P part is unused and in its original packaging.
Return procedure for MP8868GLE-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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