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Monolithic Power Systems Inc. MP8843GG-P
- Part No.:
- MP8843GG-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-PowerVFQFN
- Datasheet:
-
MP8843GG-P.pdf
- Description:
- IC REG BUCK ADJ 3A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,022
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Product details
Overview
MP8843GG-P from Monolithic Power Systems is a synchronous step-down DC/DC converter with integrated 55mΩ high-side and 35mΩ low-side MOSFETs, supporting 2.6V–6V input and delivering up to 3A continuous output current. It features I²C interface (up to 3.4Mbps), programmable output voltage (0.6V–1.1V in 3.9mV steps), constant-on-time control, and QFN-12 (2mm×2mm) packaging - deployed in battery-powered portable instruments and handheld devices.
For engineers reviewing the MP8843GG-P datasheet, MP8843GG-P pinout, MP8843GG-P application, or MP8843GG-P equivalent, key selection considerations include I²C-configurable slew rate (0.5–64mV/μs), thermal warning (140°C) and shutdown (160°C), programmable switching frequency (1–2MHz), power-good indicator with 85%–115% regulation window, and internal soft-start (1ms typical).
Technical Context
The MP8843GG-P 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 requirements. Its I²C interface supports register-level control of VOUT, slew rate, PFM mode, PG delay, and VIN overvoltage protection.
Internal protection includes latch-off short-circuit protection triggered by OUT-sensed under-voltage, thermal shutdown at 160°C, UVLO (2.35V rising), and 6.3V VIN overvoltage cutoff. The device operates in discontinuous conduction mode (DCM) under light load when PFM mode is enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.6V to 6V - supports single-cell Li-ion, dual-cell NiMH, and USB-powered systems without external LDO pre-regulation. |
| Output Current | 3A continuous - sufficient for core logic rails in portable SoCs and FPGAs requiring tight transient response. |
| Output Voltage Range | 0.6V to 1.1V in 3.9mV steps - enables precise I²C-adjusted core voltage scaling for dynamic power management. |
| Switching Frequency | 1MHz to 2MHz - allows use of compact 1μH inductors and reduces EMI in space-constrained layouts. |
| High/Low-Side RDS(on) | 55mΩ / 35mΩ - minimizes conduction loss at 3A, enabling >90% efficiency at mid-load with 5VIN/0.9VOUT. |
| I²C Speed | Up to 3.4Mbps - supports fast voltage transitions (e.g., 0.9V → 1.0V in <100μs) for real-time DVFS in embedded processors. |
| Thermal Protection | 140°C warning / 160°C shutdown - provides early fault indication and hard shutdown before silicon damage occurs. |
Pinout & Package
MP8843GG-P is housed in an ultra-small QFN-12 package (2mm × 2mm, 0.5mm pitch) with exposed thermal pad. Pin functions are validated per Monolithic Power Systems' official datasheet Rev. 1.02.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (Pin 1) | Power FET supply rail | Bypasses high di/dt switch node transients; requires direct connection to PGND via low-ESR capacitor to prevent FET stress. |
| SW (Pins 2, 11) | Switch node | Connects to inductor; carries full switching current and high dv/dt - must be minimized in layout to reduce EMI. |
| PGND (Pins 3, 12) | Power ground return | Low-impedance path for high-current switch return; isolated from AGND to avoid noise coupling into control circuitry. |
| AGND (Pin 4) | Analog reference ground | Reference for feedback, DAC, and I²C interface - must connect to PGND at single point near IC for noise immunity. |
| SCL/SDA (Pins 5, 6) | I²C serial interface | Supports standard/fast-mode-plus speeds; SDA is open-drain, requires external pull-up to VCC (1.5–2.5V) per I²C spec. |
| OUT (Pin 7) | Direct output voltage sense | Enables accurate 0.6V–1.1V regulation without external resistors; optional external resistor network extends range. |
| EN (Pin 8) | Enable control input | Active-high logic (1.2V threshold); internal 1MΩ pulldown allows floating-disable; I²C bit (Reg00 D7) provides software override. |
| PG (Pin 9) | Power-good open-drain output | Signals VOUT within ±15% of target; configurable for single- or dual-direction monitoring via Reg01 D2. |
| VIN (Pin 10) | Internal bias supply | Internally connected to PVIN; powers control logic and I²C interface - no external decoupling required beyond PVIN. |
Key Features
| Feature | Design Value |
|---|---|
| I²C-programmable VOUT slew rate | Configurable from 0.5mV/μs to 64mV/μs (8 settings) - prevents system-level voltage overshoot during dynamic scaling. |
| Constant-on-time (COT) control | Eliminates need for external compensation components and delivers sub-10μs load transient recovery at 3A step. |
| Integrated power MOSFETs | 55mΩ HS + 35mΩ LS - reduces BOM count and PCB area vs. controller+external FET solutions. |
| Programmable power-save mode | PFM mode selectable via I²C (Reg01 D0) - improves light-load efficiency to >85% at 1mA output. |
| External and I²C-controlled PG | Open-drain PG with 85%–115% window and 30μs/17ms delay options - supports sequenced power-up in multi-rail systems. |
Applications
| Mobile Processor Core Rail | USB-Powered Sensor Hub |
|---|---|
Use Scenario: Dynamic voltage and frequency scaling (DVFS) for ARM Cortex-A series SoCs in handheld tablets. IC Role / Device Role / Timing Role: Primary buck regulator delivering adjustable core voltage (0.7V–1.0V) synchronized to processor performance states via I²C. Use Value: Enables real-time VDD scaling with 3.9mV resolution and <100μs transition time, reducing average power by up to 35% versus fixed-output regulators. | Use Scenario: Power management for multi-sensor IoT nodes powered directly from USB 5V bus. IC Role / Device Role / Timing Role: Single-chip 3A buck converter supplying clean 0.9V to low-power MCU and analog sensor front-end. Use Value: Integrates soft-start, PG signaling, and thermal protection - eliminates discrete sequencing logic and reduces startup validation effort. |
| Portable Medical Instrument | Industrial Handheld Scanner |
Use Scenario: Battery-operated ultrasound probe requiring stable low-noise 1.0V rail for ADC and RF front-end. IC Role / Device Role / Timing Role: High-efficiency, low-EMI step-down regulator with AGND/PVGN isolation and COT control for fast transient immunity. Use Value: Achieves <15mV p-p output ripple at 3A load and maintains regulation during 2A load steps - critical for signal integrity in analog acquisition paths. | Use Scenario: Ruggedized barcode scanner using single-cell Li-ion (2.8V–4.2V) with 3A peak motor + logic load. IC Role / Device Role / Timing Role: Input-robust buck converter with UVLO (2.35V) and VIN OVP (6.3V) protecting against battery over-discharge and charger surges. Use Value: Maintains regulated output down to 2.6V input while delivering full 3A - extends usable battery runtime by ~12% versus 3V-minimum 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 |
|---|---|---|---|
| MP8847GQ-P | Successor with enhanced 4A rating, lower RDS(on) (40mΩ/25mΩ), and extended 0.5V–1.3V VOUT range; same QFN-12 footprint. | Required for new designs per MPS notice; supports higher current loads and tighter core voltage margins. | Select MP8847GQ-P for new designs needing >3A capability or broader VOUT range; MP8843GG-P remains viable for legacy repair or cost-sensitive 3A applications. |
| TPS62864DLCR | TI part with 4A rating, 1.8V–5.5V input, I²C interface (1Mbps), but lacks programmable slew rate and uses different PG logic (±5%). | Preferred where TI ecosystem integration or higher input voltage tolerance is needed; not drop-in due to pinout and register map differences. | Choose TPS62864DLCR only if leveraging TI's Power Stage Designer tools or requiring >4.2V input support; verify PG timing and VOUT step compatibility. |
Compared with MP8847GQ-P, MP8843GG-P offers proven reliability in legacy portable designs but lacks the higher current headroom and extended VOUT range; versus TPS62864DLCR, it provides finer voltage resolution (3.9mV vs. 10mV) and configurable PG window, though at lower I²C speed and narrower input range.
Availability
MP8843GG-P is available at Aetrix Electronics and suitable for battery-powered devices, portable instrumentation, and handheld medical equipment requiring stable component supply and long-term obsolescence management.
Supply support for MP8843GG-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 power management ICs, with design centers in the US, China, and Taiwan.
The MP8843 belongs to MPS's I²C-programmable buck converter product line, engineered for dynamic voltage scaling in space-constrained, battery-operated systems where precision, efficiency, and digital configurability are critical.
FAQ
What is the recommended input capacitor for MP8843GG-P?
A minimum 22μF X5R/X7R ceramic capacitor rated ≥6.3V must be placed between PVIN and PGND, with shortest possible trace length and direct connection to PGND pad. Additional 1μF high-frequency ceramic cap near PVIN pin further suppresses high-frequency ringing.
Does MP8843GG-P support forced PWM mode?
No - MP8843GG-P supports only PFM (power-save) mode and automatic mode (hybrid PFM/PWM). The MODE bit (Reg01 D0) enables or disables PFM; there is no dedicated forced-PWM register setting. At heavy loads, it operates in continuous conduction mode regardless of PFM state.
How is the I²C address configured on MP8843GG-P?
The fixed 7-bit slave address is 0x68 (0xD0 write / 0xD1 read). No hardware address pins exist; alternate addresses require factory customization. Pull-ups on SCL/SDA must be to VCC (1.5–2.5V), not VIN, to comply with I²C level specifications.
Can MP8843GG-P operate with input voltage below 2.6V?
No - the absolute minimum operating input is 2.6V per datasheet. UVLO rising threshold is 2.35V, but guaranteed regulation and 3A output are only specified from 2.6V. Operation below 2.6V may result in unstable output or premature shutdown.
What happens during an output short-circuit event?
MP8843GG-P enters latch-off protection: the output is disabled, PG goes low, and status register bit Vo_UV is set. Recovery requires cycling EN or VIN - no automatic restart. This prevents thermal runaway and ensures system-level fault containment.
Is the thermal pad of the QFN-12 package electrically connected?
Yes - the exposed thermal pad is internally connected to PGND. It must be soldered to a solid PGND copper pour on the PCB for thermal and electrical integrity. Thermal vias (≥4×0.3mm) to inner PGND planes are strongly recommended for reliable 3A operation.
MP8843GG-P 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-P FAQ
1.How can I place an order for MP8843GG-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8843GG-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 MP8843GG-P reliable?
The price and inventory of MP8843GG-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8843GG-P is usually 5 days.
3.What payment methods are accepted for MP8843GG-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8843GG-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8843GG-P?
MP8843GG-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8843GG-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 MP8843GG-P?
For technical support, including MP8843GG-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8843GG-P requirements.
6.How does Aetrix verify that MP8843GG-P is sourced from the original manufacturer or authorized distributors?
All MP8843GG-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 MP8843GG-P meets industry standards.
7.What is the process for return or replacement of MP8843GG-P?
All MP8843GG-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8843GG-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 MP8843GG-P part is unused and in its original packaging.
Return procedure for MP8843GG-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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