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Monolithic Power Systems Inc. MP8843GG-Z
- Part No.:
- MP8843GG-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MP8843GG-Z.pdf
- Description:
- IC REG BUCK ADJ 3A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,399
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Product details
Overview
MP8843GG-Z from Monolithic Power Systems is a 2.6V–6V input, 3A synchronous step-down DC/DC converter with I²C interface, constant-on-time (COT) control, and programmable output voltage (0.6V–1.1V in 3.9mV steps). It integrates 55mΩ/35mΩ high-/low-side MOSFETs, supports up to 3.4MHz I²C communication, and delivers fast transient response for low-voltage core rails in portable electronics.
For engineers reviewing the MP8843GG-Z datasheet, MP8843GG-Z pinout, MP8843GG-Z application, or MP8843GG-Z equivalent, this device serves as an I²C-configurable power supply for battery-powered SoC cores requiring dynamic voltage scaling, precise soft-start timing (1ms), and thermal/overcurrent protection in space-constrained QFN-12 (2mm×2mm) layouts.
Technical Context
The MP8843 employs constant-on-time (COT) control with input voltage feed-forward to maintain stable switching frequency across 2.6V–6V input and 0.6V–1.1V output ranges, eliminating loop compensation. Its I²C interface operates at up to 3.4MHz with slave address 0xD0/0xD1 and supports real-time VOUT slew rate programming (0.5–64mV/μs) and power-save mode selection.
Protection architecture includes latch-off short-circuit protection triggered by OUT-sensed under-voltage, thermal shutdown at 160°C, over-temperature warning at 140°C, and UVLO (2.35V rising) with 170mV hysteresis. The internal 7-bit DAC enables 0.6V–1.1V output regulation with ±3mV accuracy at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.6V to 6V - supports single-cell Li-ion, USB PD, and multi-cell battery inputs without external regulators. |
| Output Current | 3A continuous - sufficient for ARM Cortex-A/M series SoCs and FPGA core rails. |
| Output Voltage Range | 0.6V to 1.1V in 3.9mV steps - enables fine-grained dynamic voltage scaling for power optimization. |
| Switching Frequency | 1MHz to 2MHz - allows use of compact 1μH inductors and reduces EMI in noise-sensitive RF sections. |
| Internal MOSFET RDS(ON) | 55mΩ (HS) / 35mΩ (LS) - minimizes conduction loss and thermal rise at full load in 2mm×2mm package. |
| I²C Interface Speed | Up to 3.4Mbps - enables rapid voltage transitions and real-time telemetry in closed-loop power management systems. |
| Soft-Start Time | 1ms to 0.9V - prevents inrush current and output overshoot during system boot sequences. |
| Thermal Shutdown | 160°C with hysteresis - protects silicon integrity during sustained overload or poor PCB thermal design. |
Pinout & Package
MP8843GG-Z is housed in a thermally enhanced QFN-12 (2mm × 2mm, 0.5mm pitch) package with exposed thermal pad. Pin 1 is marked by dot; top-side marking includes product code "BL", year code "Y", and lot number "LLL".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PVIN | Power FET supply rail | Connects to VIN internally; requires local ceramic capacitor to PGND to suppress switch-node ringing and prevent FET damage. |
| 2, 11 SW | Switch node | Drives external 1μH inductor; high dv/dt node requiring tight layout and minimal trace length to reduce EMI. |
| 3, 12 PGND | Power ground return | Low-impedance return path for high-current switching loops; must be connected directly to PVIN capacitor ground. |
| 4 AGND | Analog reference ground | Separate low-noise ground for feedback and control circuitry; routed away from PGND to avoid noise coupling. |
| 5 SCL | I²C clock input | Accepts standard-mode/fast-mode-plus I²C clocks up to 3.4MHz; requires external pull-up to 1.5–2.5V bus voltage. |
| 6 SDA | I²C bidirectional data | Open-drain interface supporting read/write register access; shares same pull-up as SCL on I²C bus. |
| 7 OUT | Output voltage sense | Direct feedback input enabling 0.6V–1.1V regulation; external resistor divider extends range beyond 1.1V. |
| 8 EN | Enable control | Active-high logic input (1.2V threshold); internal 1MΩ pulldown allows floating-disable operation. |
| 9 PG | Power-good open-drain output | Indicates VOUT within ±15% of target; pulls to VIN via external resistor when regulated; sinks 2mA max. |
| 10 VIN | Internal bias supply | Connected to PVIN internally; powers control logic and I²C interface; no external connection required. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-programmable VOUT | 0.6V–1.1V in 3.9mV increments via 7-bit DAC - eliminates need for external feedback resistors and enables firmware-controlled DVFS. |
| Voltage transition slew rate control | Programmable from 0.5mV/μs to 64mV/μs - prevents system-level brownouts during dynamic voltage changes. |
| Constant-on-time (COT) control | No external compensation required - simplifies layout and ensures stable operation across input/output variations. |
| Integrated protection suite | Latch-off SCP, OCP (4.8A peak), OTP (160°C), UVLO (2.35V), and VIN OVP (6.3V) - reduces BOM count and improves system reliability. |
| Power-save mode selection | I²C-controllable PFM/PWM mode - optimizes light-load efficiency (<60μA quiescent current) without sacrificing regulation. |
| External PG indicator | Open-drain PG with 85%–115% window detection and configurable delay (0/17ms) - supports sequenced power-up in multi-rail systems. |
Applications
| Mobile SoC Core Rail | USB-C Powered Peripheral |
|---|---|
|
Use Scenario: Powering ARM Cortex-A76/A78 CPU cores in smartphones and tablets requiring dynamic voltage scaling between 0.7V and 0.95V. IC Role / Device Role / Timing Role: Primary buck regulator delivering 3A peak current with I²C-controlled VOUT transitions synchronized to CPU frequency states. Use Value: Enables sub-100ns voltage slewing via programmable 0.5–64mV/μs ramp rate, reducing idle power by >25% versus fixed-output alternatives. |
Use Scenario: Regulating 5V USB-C input down to 0.85V for Bluetooth LE audio SoCs in wireless earbuds. IC Role / Device Role / Timing Role: Compact, thermally efficient step-down converter operating from 2.6V–6V input with integrated soft-start and PG signaling. Use Value: QFN-12 (2mm×2mm) footprint saves >40% board area versus discrete solutions while maintaining 92% peak efficiency at 1A. |
| Portable Medical Sensor Node | Industrial Handheld Terminal |
|
Use Scenario: Supplying 0.6V bias to ultra-low-power ADCs and MEMS accelerometers in battery-operated patient monitors. IC Role / Device Role / Timing Role: Low-quiescent-current (60μA) buck converter with I²C telemetry for remote health monitoring firmware updates. Use Value: 7-bit DAC resolution and ±3mV output accuracy ensure consistent sensor biasing across temperature (-40°C to +125°C). |
Use Scenario: Providing 1.0V core voltage to ARM Cortex-M7 microcontrollers in ruggedized barcode scanners with wide ambient temperature range. IC Role / Device Role / Timing Role: Robust buck regulator with thermal warning (140°C) and latch-off SCP for reliable operation in unventilated enclosures. Use Value: Integrated 55mΩ/35mΩ MOSFETs sustain 3A load at 85°C ambient without derating, eliminating need for external heatsinking. |
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 |
|---|---|---|---|
| MP8847GG-Z | Successor device with extended 2.4V–6V input, 4A output, and improved 0.5V–1.325V I²C-programmable range; same QFN-12 package. | Required for new designs per MPS notice; supports higher current loads and wider VOUT range for next-gen SoCs. | Select MP8847GG-Z for new designs needing >3A capability or lower minimum VOUT (0.5V). |
| TPS62864DLCR | Texas Instruments part with 2.0V–5.5V input, 4A output, I²C interface (1MHz), and 0.3V–1.5V VOUT range; uses 1.6mm×1.6mm QFN-12. | Offers tighter output accuracy (±0.5%) and lower quiescent current (12μA) but lacks programmable slew rate and thermal warning flag. | Choose TPS62864DLCR when ultra-low IQ or tighter VOUT tolerance is critical, and slew control is not required. |
Compared with MP8847GG-Z, the MP8843GG-Z offers identical I²C programmability and package but lower current rating and narrower VOUT range; versus TPS62864DLCR, it provides superior thermal telemetry and voltage transition control at the cost of slightly higher IQ and reduced accuracy.
Availability
MP8843GG-Z is available at Aetrix Electronics and suitable for mobile SoC core rails, USB-C powered peripherals, portable medical sensor nodes, and industrial handheld terminals requiring stable component supply and long-term lifecycle support.
Supply support for MP8843GG-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 power ICs, with over 20 years of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP8843 belongs to MPS's I²C-configurable buck converter product line, designed specifically for dynamic voltage scaling in battery-powered computing and sensing applications where size, efficiency, and digital control are critical.
FAQ
What is the recommended external inductor value for MP8843GG-Z?
A 1μH shielded power inductor with ≥5A saturation current and ≤20mΩ DCR is recommended. This value balances ripple current (≈30% of 3A load), size constraints, and efficiency across 1–2MHz switching frequencies. Layout must minimize loop area between SW, PGND, and COUT to suppress EMI.
How does the MP8843GG-Z handle output short-circuit conditions?
Upon detecting VOUT <85% of target via the OUT pin, the MP8843 enters latch-off short-circuit protection. The high-side switch disables permanently until EN is cycled low-to-high or VIN drops below UVLO threshold. This prevents thermal runaway and component damage during sustained shorts.
Can the MP8843GG-Z operate without I²C communication enabled?
Yes - the device functions as a fixed-output buck converter when the I²C EN bit (Reg00 D7) is cleared. Default VOUT is 0.9031V; all protections, soft-start, and COT control remain active. External EN pin retains full on/off control independent of I²C state.
What is the maximum capacitive load supported on the SDA/SCL lines?
The MP8843GG-Z supports up to 400pF total bus capacitance on SDA and SCL lines, compliant with Fast-Mode Plus I²C specifications. For 400pF loads, rise/fall times remain within spec (≤300ns) when using 3mA current-source pull-ups and proper termination.
Is the MP8843GG-Z RoHS-compliant and halogen-free?
Yes - MP8843GG-Z is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU. Full compliance documentation, including material declarations and test reports, is available on the MPS Quality Assurance website.
How is thermal performance affected by PCB layout in the QFN-12 package?
Thermal resistance θJA is 70°C/W on a 4-layer JEDEC PCB. To achieve rated 3A output, the exposed thermal pad must be soldered to ≥2cm² of inner-layer copper pour with ≥4 thermal vias (0.3mm diameter) connecting to ground planes. Insufficient copper reduces current capability by up to 35% at 85°C ambient.
Does the MP8843GG-Z support automatic power sequencing with other rails?
Not natively - it lacks dedicated enable/disable sequencing pins. However, its open-drain PG output can drive the EN pin of downstream regulators, and I²C commands allow coordinated VOUT transitions across multiple MP8843 devices when controlled by a central MCU.
MP8843GG-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 (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.6V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.125V
- Current - Output:
- 3A
- Frequency - Switching:
- 1MHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (2x2)
MP8843GG-Z FAQ
1.How can I place an order for MP8843GG-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8843GG-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 MP8843GG-Z reliable?
The price and inventory of MP8843GG-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8843GG-Z is usually 5 days.
3.What payment methods are accepted for MP8843GG-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8843GG-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8843GG-Z?
MP8843GG-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8843GG-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 MP8843GG-Z?
For technical support, including MP8843GG-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8843GG-Z requirements.
6.How does Aetrix verify that MP8843GG-Z is sourced from the original manufacturer or authorized distributors?
All MP8843GG-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 MP8843GG-Z meets industry standards.
7.What is the process for return or replacement of MP8843GG-Z?
All MP8843GG-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8843GG-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 MP8843GG-Z part is unused and in its original packaging.
Return procedure for MP8843GG-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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