My Inquiry
My Account
Monolithic Power Systems Inc. MP8869SGL-P
- Part No.:
- MP8869SGL-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 14-VFDFN Exposed Pad
- Datasheet:
-
MP8869SGL-P.pdf
- Description:
- IC REG BUCK PROG 12A 14QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,150
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP8869SGL-P from Monolithic Power Systems is a 18V, 12A synchronous step-down converter with integrated I²C telemetry, constant-on-time (COT) control, and programmable output voltage (0.6V–1.108V in 4mV steps). It delivers 12A continuous/15A peak current across 2.85V–18V input, features open-drain power-good (PG), and supports PFM/PWM mode selection - deployed in SSD power rails and distributed server supplies.
For engineers reviewing the MP8869SGL-P datasheet, MP8869SGL-P pinout, MP8869SGL-P application, or MP8869SGL-P equivalent, this page provides verified electrical specifications, QFN-14 package layout, I²C-addressable telemetry parameters (voltage/current monitoring ±5%), thermal shutdown (160°C), and real-world load regulation data for high-density DC/DC design validation.
Technical Context
The MP8869SGL-P implements constant-on-time (COT) control with internal ramp compensation to achieve fast transient response and stable loop behavior without external compensation components. Its dual-MOSFET synchronous architecture integrates 15mΩ high-side and 4.5mΩ low-side RDS(ON) switches, enabling >95% efficiency at 12A under 12VIN/1VOUT.
I²C interface enables full digital configurability: four selectable addresses (61H–67H), programmable slew rate, adjustable switching frequency (400–1250kHz), hiccup/latch-off OCP, and real-time VOUT/IOUT telemetry with ±5% accuracy. PG pin asserts only when VOUT remains within ±5% of nominal for ≥30μs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.85V to 18V - supports wide industrial and computing rail inputs including 3.3V, 5V, 12V, and 15V systems. |
| Output Current | 12A continuous / 15A peak - sustains full load without derating up to +125°C junction temperature. |
| Reference Accuracy | ±1% at 25°C, ±1.5% over –40°C to +125°C - ensures tight output regulation across temperature for memory and logic rails. |
| I²C Telemetry Accuracy | ±5% for VOUT and IOUT monitoring - enables host-system health diagnostics without external ADCs. |
| Switching Frequency | 400–1250kHz (I²C-programmable) - balances EMI, inductor size, and light-load efficiency in compact layouts. |
| Thermal Shutdown | 160°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor airflow conditions. |
| Power-Good Window | VOUT = 0.85–0.94×VNOM (UV) and 1.01–1.09×VNOM (OV), 30μs deglitch - eliminates false triggers during transients. |
Pinout & Package
MP8869SGL-P is housed in a thermally enhanced QFN-14 (3mm × 4mm, 0.5mm pitch) package with exposed thermal pad. Pin 8 (PGND) and Pin 14 (AGND) must be connected to a common ground plane via multiple vias to minimize noise and ensure stable regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Drives high-side MOSFET gate; requires 0.1µF ceramic capacitor between BST and SW to sustain gate drive above VIN. |
| 2 SW | Switch node | High-current path connecting internal HS/LS FETs; must use wide copper trace and low-inductance layout to reduce ringing. |
| 3 SCL | I²C clock input | HS-mode compatible (up to 3.4MHz); internal pull-up not provided - external 2.2kΩ to VCC required. |
| 4 SDA | I²C data bidirectional | Open-drain; shares same pull-up as SCL; supports multi-master arbitration and repeated start conditions. |
| 5 EN | Enable control | 1.2V threshold with 110mV hysteresis; 1.5MΩ internal pull-down allows direct connection to VIN for auto-start. |
| 6 A0 | I²C address select | Voltage divider input setting one of four I²C addresses (61H/63H/65H/67H); 0.24–0.77×VCC thresholds defined. |
| 7 PG | Power-good indicator | Open-drain output sinking 4mA at 0.4V; asserts high-Z when VOUT is in regulation, pulls low on fault. |
| 8 PGND | Power ground reference | Primary return path for output current; must be isolated from noisy digital AGND until joined at single point. |
| 9 VIN | Main input supply | Accepts 2.85–18V; requires ≥22µF low-ESR ceramic input capacitance placed near pin 9 and pin 8. |
| 10 VOUT | Output voltage sense | Direct connection to load positive terminal; used for remote sensing to compensate PCB IR drop. |
| 11 FB | Feedback input | Connects to resistor divider from VOUT to PGND; sets output voltage with 720mV ±1% internal reference. |
| 12 SS | Soft-start timing | Capacitor-to-ground sets startup ramp time; 7µA current source yields ~1ms/ms per µF. |
| 13 VCC | Internal LDO output | 3.5V regulated supply for internal circuitry; decoupled with 0.47µF ceramic capacitor to PGND. |
| 14 AGND | Analog ground reference | Signal reference for FB, SS, A0, SCL/SDA; must connect to PGND externally if not internally bonded. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-programmable reference | 0.6V–1.108V in 4mV steps with independent slew rate control - enables dynamic voltage scaling for CPU/GPU cores. |
| Four I²C addresses | 61H, 63H, 65H, 67H selected via A0 voltage thresholds - supports up to four MP8869SGL-P devices on same bus in multi-rail systems. |
| Integrated telemetry | Real-time ±5% accurate VOUT and IOUT reporting over I²C - eliminates need for external current-sense amplifiers and ADCs. |
| Hiccup/latch-off OCP | Configurable low-side valley current limit (14A typical) with automatic recovery or latched shutdown - protects against short-circuit faults. |
| PFM/PWM mode selection | I²C-selectable operation mode - PFM maximizes light-load efficiency; forced PWM ensures fixed frequency for EMI filtering. |
| External soft-start | Capacitor-controlled ramp (7µA current source) - prevents inrush current and stabilizes startup into large capacitive loads. |
Applications
| Solid-State Drive (SSD) Power Rail | Flat-Panel Display Logic Supply |
|---|---|
|
Use Scenario: Powers NVMe SSD controller and NAND flash ICs requiring tightly regulated 1.2V/1.8V/3.3V rails with dynamic load steps up to 10A. IC Role / Device Role / Timing Role: Primary buck regulator delivering digitally programmable, telemetry-enabled output with <100µs transient response. Use Value: I²C telemetry enables host controller to monitor rail health and throttle writes during thermal events - improving SSD endurance and reliability. |
Use Scenario: Supplies TCON (timing controller) and source/gate driver ICs in 4K UHD monitors with input derived from 12V or 19V adapter rails. IC Role / Device Role / Timing Role: High-current, low-noise step-down converter supporting 5V/1.2V dual outputs via cascaded topology. Use Value: COT control and 12A capability maintain <±1% regulation during rapid backlight dimming and image content changes - eliminating display artifacts. |
| Distributed Server Power | Set-Top Box SoC Core Supply |
|
Use Scenario: Provides point-of-load (POL) conversion for FPGA or ASIC cores in rack-mounted servers where board space and thermal density are constrained. IC Role / Device Role / Timing Role: Digitally configurable POL regulator with thermal-aware shutdown and remote voltage margining via I²C. Use Value: Four I²C addresses allow concurrent configuration of multiple rails from single BMC controller - simplifying firmware and reducing BOM count. |
Use Scenario: Delivers 1.0V–1.1V core voltage to ARM-based media processors in digital set-top boxes with variable DVFS demands. IC Role / Device Role / Timing Role: Adaptive buck converter supporting dynamic voltage/frequency scaling via I²C-slewed reference updates. Use Value: 4mV-step programmability and ±1% reference accuracy enable precise DVFS tuning - reducing average SoC power by up to 22% versus fixed-output alternatives. |
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 |
|---|---|---|---|
| MPQ8869GQ-AEC1 | Automotive-grade (AEC-Q100 Grade 1), same pinout and I²C register map, but rated for –40°C to +150°C junction and qualified for 1000hr HTOL. | Required for infotainment and ADAS ECUs; not suitable for commercial SSDs due to cost and qualification overhead. | Select for automotive deployments needing extended temperature range and automotive reliability testing. |
| TPS546D24A | PMBus-compliant (not I²C), 12A, 2.95–18V input, but lacks integrated telemetry and uses external current-sense resistor for monitoring. | Used in telecom/datacom where PMBus ecosystem integration is mandatory; requires additional sense resistor and calibration. | Choose when PMBus protocol compliance and TI's Fusion Digital Power GUI are required over I²C simplicity. |
Compared with MPQ8869GQ-AEC1, MP8869SGL-P offers identical functionality at lower cost for commercial applications, while TPS546D24A trades I²C telemetry for PMBus infrastructure compatibility - making MP8869SGL-P optimal for cost-sensitive, telemetry-driven embedded systems.
Availability
MP8869SGL-P is available at Aetrix Electronics and suitable for solid-state drive power management, flat-panel display logic supplies, and distributed server point-of-load applications requiring stable component supply, I²C configurability, and 12A continuous current delivery.
Supply support for MP8869SGL-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 over 20 years of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP8869S product line targets high-density, telemetry-enabled power delivery for storage, computing, and consumer electronics - emphasizing digital configurability, thermal robustness, and minimal external component count.
FAQ
What is the minimum output voltage achievable with MP8869SGL-P?
The MP8869SGL-P supports an I²C-programmable reference range from 0.6V to 1.108V in 4mV increments. When combined with the external feedback resistor divider, this enables precise output voltages down to 0.6V - sufficient for modern low-voltage SoC cores and memory interfaces.
Does MP8869SGL-P require external bootstrap diode or capacitor?
No external bootstrap diode is required. A 0.1µF ceramic capacitor must be placed between BST (Pin 1) and SW (Pin 2) to form the floating gate-drive supply for the high-side MOSFET. This capacitor must be low-ESR and located adjacent to the IC.
How does the power-good (PG) pin behave during startup and fault conditions?
PG remains low until VOUT reaches and sustains regulation within ±5% for ≥30μs. During undervoltage (VOUT < 0.85×VNOM) or overvoltage (VOUT > 1.09×VNOM), PG pulls low with 4mA sink capability. It returns to high-impedance only after regulation is re-established.
Can MP8869SGL-P operate without I²C communication enabled?
Yes. The device defaults to factory-set parameters: VREF = 0.72V, 500kHz switching frequency, auto PFM/PWM mode, and hiccup OCP. I²C is optional for advanced configuration - basic operation requires only EN, VIN, VOUT, FB, and PGND connections.
What thermal management practices are recommended for 12A operation?
For continuous 12A output, use ≥4 thermal vias (0.3mm diameter) under the exposed pad connected to a solid inner-layer ground plane. Maintain ≥100mm² copper area on top/bottom layers, and avoid placing thermal pads under inductors or high-temperature components.
Is the MP8869SGL-P RoHS and halogen-free compliant?
Yes. MP8869SGL-P is lead-free, halogen-free, and fully compliant with the EU RoHS Directive 2011/65/EU. MPS confirms green status per its Quality Assurance documentation, with no exemptions applied.
How is the soft-start time calculated for a given SS capacitor value?
The internal 7µA current source charges the SS capacitor to 1.2V. Soft-start time ≈ (1.2V × CSS) / 7µA. For example, a 100nF capacitor yields ~17ms ramp time - ensuring controlled inrush into typical 1000–2200µF output capacitors.
MP8869SGL-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 14-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.85V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 12A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-QFN (3x4)
MP8869SGL-P FAQ
1.How can I place an order for MP8869SGL-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8869SGL-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 MP8869SGL-P reliable?
The price and inventory of MP8869SGL-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8869SGL-P is usually 5 days.
3.What payment methods are accepted for MP8869SGL-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8869SGL-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8869SGL-P?
MP8869SGL-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8869SGL-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 MP8869SGL-P?
For technical support, including MP8869SGL-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8869SGL-P requirements.
6.How does Aetrix verify that MP8869SGL-P is sourced from the original manufacturer or authorized distributors?
All MP8869SGL-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 MP8869SGL-P meets industry standards.
7.What is the process for return or replacement of MP8869SGL-P?
All MP8869SGL-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8869SGL-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 MP8869SGL-P part is unused and in its original packaging.
Return procedure for MP8869SGL-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP8869SGL-P Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
