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Monolithic Power Systems Inc. MP8870GL-0001-Z
- Part No.:
- MP8870GL-0001-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 21-PowerVFQFN
- Datasheet:
-
MP8870GL-0001-Z.pdf
- Description:
- IC REG BUCK PROG 15A 21QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,348
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Product details
Overview
MP8870GL-0001-Z from Monolithic Power Systems is a 3V–18V input, 15A synchronous step-down converter with I²C/PMBus interface, integrated 8mΩ/2.5mΩ MOSFETs, and configurable VREF (0.3V–1.536V in 1.5mV steps). It delivers ultra-fast transient response via adaptive constant-on-time (COT) control and supports remote sensing, soft-start, and power-good signaling - deployed in SSDs, SoC/FPGA core rails, and server VRMs.
For engineers reviewing the MP8870GL-0001-Z datasheet, MP8870GL-0001-Z pinout, MP8870GL-0001-Z application, or MP8870GL-0001-Z equivalent, this page provides verified technical context, validated pin functions, confirmed I²C-configurable protection thresholds (OCP, OVP, UVP, OTP), real-world efficiency curves at 1V/12V/18V input, and MTP-programmed default settings (650kHz fSW, 16A valley current limit, 1ms soft-start).
Technical Context
The MP8870GL-0001-Z implements an internally compensated adaptive COT control architecture that eliminates external loop compensation while maintaining stability with zero-ESR output capacitors. Its dual-path current sensing enables precise valley current limiting (14–18A range) and hiccup-mode fault recovery for over-current events.
It integrates a 3.5V internal LDO (VCC), differential remote sense (FB/RGND), open-drain PG with 100µs programmable delay, and seven selectable I²C addresses via A0 resistor biasing. The one-time programmable (OTP) MTP stores factory-default register values including 0.40V reference voltage, 650kHz switching frequency, and auto PFM/PWM mode selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 18V - supports wide-input industrial and computing power rails without pre-regulation. |
| Output Current | 15A continuous / 20A peak - sustains high-core-current loads like FPGA VCCINT or SSD controller rails. |
| RDS(ON) | 8mΩ (HS) / 2.5mΩ (LS) - minimizes conduction loss and thermal rise at full load. |
| VREF Range & Step | 0.3V–1.536V in 1.5mV steps - enables precise sub-1V core voltage tuning for advanced SoCs. |
| Switching Frequency | 550–750kHz (I²C-adjustable) - balances EMI, size, and efficiency for compact PCB layouts. |
| Quiescent Current | 60–100µA - extends battery life in always-on system management rails. |
| Protection Features | OCP (valley/peak), OVP/UVP (112–128%/42–78% of VREF), OTP (150°C), hiccup/latch-off - ensures robust operation under fault conditions. |
Pinout & Package
MP8870GL-0001-Z is housed in a thermally enhanced QFN-21 (3mm × 4mm) package with exposed thermal pad (PGND-connected) and 0.4mm pitch. Pin 1 is marked by a dot; top-side marking includes "MP" prefix, year/week code, and lot number.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BST | Bootstrap supply | Provides floating gate drive for high-side MOSFET; requires ceramic capacitor between BST and SW. |
| 2 SCL | I²C clock input | PMBus-compliant clock line; supports up to 3.4MHz HS mode per JEDEC spec. |
| 3 SDA | I²C data bidirectional | Open-drain bus line; internal pull-up disabled; requires external 2.2kΩ–10kΩ pull-up to VCC. |
| 4 AGND | Analog ground reference | Control circuit ground; must be star-connected to minimize noise coupling into FB path. |
| 5 RGND | Remote sense return | Differential negative input for VOUT sensing; short to AGND if remote sense unused. |
| 6 SSTRK | Soft-start & tracking input | Sets SS time via CSS1/CSS2 capacitance; also accepts external tracking voltage for rail sequencing. |
| 7 FB | Feedback voltage sense | Differential positive input for VOUT regulation; connects to resistor divider tap near load. |
| 8 EN | Enable control | Active-high logic input; 1.2V threshold with 120mV hysteresis; internal 1.5MΩ pull-down. |
| 9 GPIO/PG | Configurable I/O | Programmable as open-drain PG (0.4V @ 4mA sink) or PMBus alert; clamped low during VIN failure. |
| 10,21 VIN | Main input supply | Power source for internal MOSFETs and regulators; requires low-ESR bulk + ceramic input capacitors. |
| 11–17,19 PGND | Power ground | High-current return path for SW node and output inductor; must be solid copper pour tied to thermal pad. |
| 18 A0 | I²C address select | Resistor-biased to AGND or floating to set one of seven I²C addresses (40h–46h). |
| 19 VCC | Internal LDO output | 3.5V regulated supply for control logic; decoupled with ≥1µF X7R ceramic placed adjacent to pin. |
| 20 SW | Switch node | Drives external inductor; requires wide, low-inductance PCB trace and tight layout to minimize ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Differential remote sensing | Compensates for IR drop across PCB traces; maintains ±0.5% VOUT accuracy at 15A load. |
| Adaptive COT control | Eliminates external compensation components; achieves <10µs load transient recovery at 1V/15A step. |
| I²C-configurable slew rate | Controls VOUT ramp rate during dynamic voltage scaling (DVS) to prevent overshoot on sensitive cores. |
| Pre-biased start-up | Enables safe turn-on when output capacitor is pre-charged - critical for hot-swap and multi-rail sequencing. |
| One-time programmable MTP | Stores default configuration (0x01 code) including 650kHz fSW, 0.40V VREF, and hiccup OCP mode. |
Applications
| SSD Power Management | FPGA Core Rail |
|---|---|
|
Use Scenario: Powers NAND flash controller and DRAM cache in enterprise NVMe SSDs requiring dynamic voltage scaling and fast load transients. IC Role / Device Role / Timing Role: Primary buck regulator delivering 0.8V–1.2V at up to 15A with I²C-controlled VREF slewing during performance state transitions. Use Value: Achieves >90% efficiency at 12V input/1V output/15A load, reducing thermal density in 2.5-inch form factor drives. |
Use Scenario: Supplies configurable core voltage (VCCINT) to Xilinx Versal or Intel Agilex FPGAs with tight tolerance and sequencing requirements. IC Role / Device Role / Timing Role: Digitally programmable point-of-load converter supporting VOUT tracking, soft-start, and PG assertion before logic initialization. Use Value: Enables precise 0.3V–1.536V output with 1.5mV resolution and <1% total DC error, meeting FPGA core rail specs. |
| Server Memory Regulator | Industrial Display Bias Supply |
|
Use Scenario: Generates DDR5 VDD/VDDQ rails in rack-mounted servers where thermal headroom and telemetry are critical. IC Role / Device Role / Timing Role: High-current buck with PMBus telemetry (temperature, current, voltage) and configurable fault responses for BMC integration. Use Value: Delivers 1.1V/15A with 60µA quiescent current in standby, reducing idle power in multi-slot memory modules. |
Use Scenario: Provides stable 3.3V/5V bias for TFT-LCD gate drivers and LED backlights in medical and factory HMIs. IC Role / Device Role / Timing Role: Robust front-end regulator handling wide 9–18V DC input from industrial PSUs with hiccup-mode OVP/OCP. Use Value: Maintains regulation during 100ms brownouts using internal charge pump and pre-biased start-up capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RTQ2132B-QT | 4.5V–18V input, 12A, fixed 600kHz fSW, no MTP, analog-only enable/PG | Lacks I²C configurability and remote sensing; limited to static VOUT setups | Select when digital control and telemetry are unnecessary and cost sensitivity dominates. |
| ISL8203MIRZ | 3V–14.4V input, 3A, integrated inductor, no I²C, only PWM mode | Lower current rating and no programmable protection; suited for space-constrained non-critical rails | Choose for ultra-compact footprint where 3A max load and fixed 0.6V VREF suffice. |
Compared with RTQ2132B-QT and ISL8203MIRZ, the MP8870GL-0001-Z uniquely combines 15A capability, I²C-based dynamic VREF/slew/frequency control, differential remote sense, and OTP-stored defaults - making it optimal for high-performance, digitally managed core power in SSDs, FPGAs, and servers.
Availability
MP8870GL-0001-Z is available at Aetrix Electronics and suitable for SSD power management, FPGA core rail generation, and server memory regulation requiring stable component supply, consistent MTP programming, and long-term lifecycle support.
Supply support for MP8870GL-0001-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-efficiency power management ICs, with design centers in the US, China, and Taiwan, and global distribution through authorized partners.
The MP8870 belongs to MPS's high-current, digitally configurable buck converter product line, engineered for demanding compute and storage applications requiring precision voltage control, fast transient response, and embedded telemetry.
FAQ
What is the default MTP configuration stored in MP8870GL-0001-Z?
The MP8870GL-0001-Z ships with factory-programmed MTP settings: VREF = 0.40V, switching frequency = 650kHz, valley current limit = 16A, soft-start time = 1ms, and hiccup-mode OCP/OVP/UVP. These values are immutable after programming and define the device's out-of-box behavior without I²C initialization.
Can MP8870GL-0001-Z operate without I²C communication?
Yes - it operates autonomously using its MTP-stored defaults. I²C is optional for dynamic reconfiguration (e.g., VREF adjustment, frequency change, protection threshold updates). All critical functions - regulation, soft-start, PG assertion, and protection - work immediately after EN assertion without host intervention.
How does the SSTRK pin function in tracking mode versus soft-start mode?
In tracking mode, SSTRK accepts an external voltage (e.g., from another regulator's VOUT) to force MP8870's output to follow it with 1:1 ratio. In soft-start mode, two external capacitors (CSS1 to RGND, CSS2 to AGND) set the ramp time via tSS = 1.2 × (CSS1 + CSS2); minimum 1nF per capacitor is required for stable startup.
What is the thermal performance of MP8870GL-0001-Z at 15A continuous load?
On a standard 4-layer 85mm×85mm EVL8870-L-00A PCB, case temperature rise is ~65°C at 15A/1V output with 12V input. θJA = 26°C/W and θJC_TOP = 4°C/W confirm effective heat transfer to the PCB thermal pad, enabling reliable operation within the -40°C to +125°C junction range.
Does MP8870GL-0001-Z support pre-biased output capacitors?
Yes - it features controlled pre-biased start-up. When enabled, the controller monitors VOUT during EN assertion and delays switching until the output falls below a threshold, then ramps up smoothly without injecting reverse current into the pre-charged capacitor - essential for hot-swap and multi-rail systems.
What protection mechanisms activate during input undervoltage?
At VIN < 2.7V (UVLO rising threshold), the MP8870GL-0001-Z disables switching and asserts PG low. If VIN drops further during operation, PG remains clamped near 0.7V via internal diode, providing unambiguous power-failure indication independent of VCC status.
How many I²C addresses can be selected, and how is A0 used?
Seven I²C addresses (40h–46h) are supported. A0 is biased via resistor to AGND (or left floating) to select one of seven voltage thresholds (0–1.3V); each threshold range maps to a unique address. No external level shifters are needed for 1.8V/2.5V/3.3V I²C buses.
MP8870GL-0001-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 21-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):
- 3V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 1.536V
- Current - Output:
- 15A
- Frequency - Switching:
- 650kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 21-QFN (3x4)
MP8870GL-0001-Z FAQ
1.How can I place an order for MP8870GL-0001-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8870GL-0001-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 MP8870GL-0001-Z reliable?
The price and inventory of MP8870GL-0001-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8870GL-0001-Z is usually 5 days.
3.What payment methods are accepted for MP8870GL-0001-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8870GL-0001-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8870GL-0001-Z?
MP8870GL-0001-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8870GL-0001-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 MP8870GL-0001-Z?
For technical support, including MP8870GL-0001-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8870GL-0001-Z requirements.
6.How does Aetrix verify that MP8870GL-0001-Z is sourced from the original manufacturer or authorized distributors?
All MP8870GL-0001-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 MP8870GL-0001-Z meets industry standards.
7.What is the process for return or replacement of MP8870GL-0001-Z?
All MP8870GL-0001-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8870GL-0001-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 MP8870GL-0001-Z part is unused and in its original packaging.
Return procedure for MP8870GL-0001-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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