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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Monolithic Power Systems Inc. MP8848GD-Z

Name: MP8848GD-Z
Brand: Monolithic Power Systems Inc.
SKU: MP8848GD-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP8848GD-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 15-PowerVFQFN

Datasheet:: MP8848GD-Z.pdf

Description:: IC REG BUCK ADJ 6A 15QFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MP8848GD-Z from Monolithic Power Systems is a 6A, synchronous step-down DC/DC converter with I²C interface, operating from 2.7V–6V input and delivering programmable 0.6V–1.235V output in 5mV steps. It integrates 32mΩ high-side and 15mΩ low-side MOSFETs, supports 0.85MHz–2.2MHz switching frequency, and features constant-frequency hysteretic control for fast transient response without loop compensation - used in processor core supplies requiring dynamic voltage scaling.

For engineers reviewing the MP8848GD-Z datasheet, MP8848GD-Z pinout, MP8848GD-Z application, or MP8848GD-Z equivalent, key selection considerations include I²C-programmable VOUT slew rate (8mV/μs or 32mV/μs), thermal warning at 130°C, power-good monitoring with ±10% window, and factory-adjustable switching frequency across six discrete values.

Technical Context

The MP8848GD-Z implements constant-frequency hysteretic control-combining fixed-frequency clocking with instantaneous current-mode-like response-eliminating need for external compensation while maintaining stable 0.85–2.2MHz operation. Its internal DAC drives the reference input of a differential amplifier, enabling precise 7-bit (128-step) output voltage adjustment via I²C.

I²C communication operates up to 3.4Mbps with configurable slave address (0xC0/0xC1), supporting dynamic voltage scaling, soft-start control, output discharge enable, and PFM/CCM mode selection-all through six register-mapped control bytes including status readback, VSEL, SysCntlreg1/2, and die ID.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7V to 6V - supports single-cell Li-ion, USB PD, and multi-rail embedded systems without pre-regulation.
Max Output Current	6A continuous - sufficient for ARM Cortex-A series CPU cores and FPGA I/O banks under full load.
Output Voltage Range	0.6V to 1.235V in 5mV steps - enables fine-grained DVS for power-constrained SoCs with multiple voltage domains.
Switching Frequency	0.85MHz to 2.2MHz (6 selectable values) - balances efficiency vs. EMI filtering size; default 1.25MHz.
Internal MOSFET R_DS(on)	32mΩ (HS) / 15mΩ (LS) - reduces conduction loss and thermal stress at 6A, enabling compact QFN-15 layout.
I²C Interface Speed	Up to 3.4Mbps - supports real-time voltage updates during processor state transitions (e.g., C-states).
Thermal Protection	130°C warning (OTW flag), 150°C shutdown - provides fail-safe operation in thermally constrained modules.

Pinout & Package

MP8848GD-Z is housed in a thermally enhanced QFN-15 package (2mm × 3mm, 0.5mm pitch) with exposed thermal pad (Pin 3) tied to GND for optimal junction-to-board heat transfer.

Pin/Terminal	Circuit Role	Design Meaning
1 (PG)	Power Good open-drain output	Asserts high when VOUT is within ±10% of target; requires external pull-up to VIN for system sequencing.
2 (SDA)	I²C bidirectional data line	Supports standard/fast/high-speed modes; internally pulled down; compatible with 1.5V–3.3V bus voltages.
3 (GND)	Power ground (thermal pad)	Primary thermal path; must be soldered to large PCB copper area for θ_JA = 35°C/W performance.
4–6 (VIN)	Main input supply pins	Three parallel VIN connections reduce IR drop and improve high-current stability at 6A peak.
7–9 (SW)	Power switch node	Connects to external inductor; high di/dt node requiring tight layout and minimized loop area.
10 (EN)	Enable control input	Active-high logic (1.8V threshold); internal 1MΩ pulldown allows floating-disable; overrides I²C EN bit.
11 (AGND)	Analog ground reference	Separate from power GND to isolate feedback sensing from switching noise; connects to VOUT sense trace.
12 (VOUT)	Output voltage sense input	High-impedance Kelvin connection point for accurate regulation; routed away from SW and PG traces.
13 (SCL)	I²C clock input	Open-drain with internal weak pull-up; synchronizes all register reads/writes; supports clock stretching.
14 (AVIN)	Analog supply & P3 function	Provides clean bias for internal analog blocks; doubles as programmable GPIO (P3) when enabled via Reg03.

Key Features

Feature	Design Value
Constant-frequency hysteretic control	Delivers sub-1μs load transient response without external compensation components or stability tuning.
I²C-programmable output slew rate	Configurable 8mV/μs or 32mV/μs transition - prevents overshoot during rapid VOUT changes in DVFS sequences.
Integrated output discharge	Internal 500Ω pull-down activated via Reg03 D4 - ensures safe VOUT collapse during disable, eliminating need for external FET.
Ultra-fast soft-start	Fixed 1ms ramp time - limits inrush current into bulk capacitance while avoiding undershoot on startup.
Multi-level thermal management	Dedicated OTW flag at 130°C + hard shutdown at 150°C - enables host firmware to throttle before catastrophic failure.

Applications

Mobile Application Processor Core Supply

FPGA I/O Bank Regulation

Use Scenario: Dynamic voltage scaling for ARM Cortex-A78/A710 cores during performance state transitions (e.g., LITTLE-to-big cluster migration).

IC Role / Device Role / Timing Role: Primary buck regulator controlling VDD_CPU with I²C-synchronized VOUT updates aligned to ARM PSCI power state entry/exit timing.

Use Value: 5mV output resolution and 32mV/μs slew rate prevent logic corruption during <10μs voltage transitions while maintaining ±1% regulation accuracy.

Use Scenario: Providing stable 1.2V or 1.35V to Xilinx Zynq UltraScale+ I/O banks with simultaneous bank switching.

IC Role / Device Role / Timing Role: High-current, low-noise point-of-load regulator with PG signal synchronized to FPGA configuration complete handshake.

Use Value: 6A capability and 15mΩ low-side MOSFET minimize voltage droop during 2A+ I/O switching events, ensuring setup/hold timing margins.

Industrial Edge AI Accelerator Module

Automotive Infotainment SoC Power Rail

Use Scenario: Powering NVIDIA Jetson Orin Nano GPU cores in fanless edge servers with ambient temperatures up to 70°C.

IC Role / Device Role / Timing Role: Thermally robust step-down converter using OTW flag to trigger firmware-based thermal throttling before shutdown.

Use Value: QFN-15 package with θ_JA = 35°C/W enables 6A operation at TA = 70°C without heatsink, reducing BOM cost and board area.

Use Scenario: Supplying Renesas R-Car H3 SoC core voltage (0.85V @ 5A) in automotive infotainment head units meeting AEC-Q100 Grade 2.

IC Role / Device Role / Timing Role: Automotive-grade buck controller with UVLO (2.55V), OVP (6.3V), and PG fault reporting for ASIL-B functional safety monitoring.

Use Value: Internal soft-start and PG assertion delay (30μs) ensure clean power sequencing with MCU reset controllers per ISO 16750-2 pulse test requirements.

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
MP8847GD-Z	Pin-compatible successor with improved efficiency (up to 95%), lower quiescent current (150μA), and extended -40°C to +150°C junction rating.	Designed for new designs where long-term supply continuity and higher thermal margin are required.	Select MP8847GD-Z for production ramps; MP8848GD-Z only for legacy repair or obsolescence bridging.
TPS62864DLCR	TI part with 4A rating, 1.8V–5.5V input, 0.3V–1.5V output, and PMBus interface; lacks thermal warning flag and I²C slew rate control.	Suitable for space-constrained applications needing PMBus telemetry but not DVFS-critical slew control.	Choose TPS62864DLCR only if PMBus ecosystem integration outweighs MP8848's finer VOUT granularity and thermal diagnostics.

Compared with MP8847GD-Z, MP8848GD-Z offers identical pinout and register mapping but lacks the newer device's 150°C junction rating and 150μA IQ - making it viable only for cost-sensitive legacy refreshes where thermal headroom exceeds 20°C. Against TPS62864DLCR, MP8848GD-Z provides superior voltage step resolution (5mV vs. 10mV) and dedicated slew rate control, critical for high-speed SoC DVFS.

Availability

MP8848GD-Z is available at Aetrix Electronics and suitable for processor core supplies, FPGA I/O regulation, industrial edge AI accelerators, and automotive infotainment SoC power rails requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for MP8848GD-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 power management ICs, with over two decades of innovation in DC/DC conversion, motor drivers, and LED lighting solutions.

The MP8848 belongs to MPS's high-density, I²C-configurable buck converter product line, designed specifically for dynamic voltage scaling in mobile and embedded SoCs where precision, speed, and thermal resilience are critical.

FAQ

What is the recommended minimum input voltage for reliable operation?

The MP8848GD-Z has a guaranteed UVLO rising threshold of 2.55V, with typical operation starting at 2.7V. Below 2.7V, output regulation cannot be assured across temperature and load; sustained operation below 2.55V disables the device. For 0.94V output, MPS recommends VIN ≥ 1.5V above VOUT (i.e., ≥2.44V), but full 6A capability requires VIN ≥ 3.0V to maintain thermal margin.

How does the I²C Go bit (Reg03 D5) affect output voltage transitions?

Writing Reg03 D5 = 1 initiates a hardware-controlled VOUT transition from the current DAC code to the newly written VSEL value (Reg01 D6:D0). The slew rate is determined by Reg03 D2 (8mV/μs or 32mV/μs), and the transition completes autonomously without further register access - essential for glitch-free DVFS during CPU frequency scaling.

Can the MP8848GD-Z operate without an external pull-up on the PG pin?

No - PG is an open-drain output requiring an external pull-up resistor to VIN (typically 10kΩ). Without it, the PG signal remains floating and cannot assert "power good" to downstream sequencers or MCUs. The internal structure lacks a weak pull-up; omission causes boot failures in systems relying on PG for reset release.

What is the maximum allowable capacitive load on the SDA/SCL lines?

The MP8848GD-Z specifies 400pF maximum total bus capacitance (SDAH + SDA and SCLH + SCL), consistent with I²C Fast-mode Plus (1Mbps) requirements. Exceeding 400pF increases rise/fall times beyond spec (e.g., >300ns), risking clock stretching timeout or NACK errors - verified per JESD78B test conditions with 3mA pull-up current source.

Is the AVIN pin mandatory for operation, or can it be left unconnected?

AVIN must be connected to a clean 2.7V–6V supply - it powers internal analog circuitry (DAC, comparators, reference) and cannot be omitted. Leaving AVIN floating or disconnected causes undefined behavior, including incorrect VOUT regulation, failed I²C communication, and spurious PG assertion. If unused as P3 GPIO, tie AVIN directly to VIN with short trace.

Does the MP8848GD-Z support forced continuous conduction mode (CCM)?

Yes - setting Reg02 D0 = 1 disables auto-PFM mode and forces CCM operation across all loads. This eliminates low-load efficiency peaks but ensures constant switching frequency and reduced output ripple - critical for noise-sensitive analog subsystems or EMI-constrained enclosures where variable-frequency PFM could interfere with RF bands.

What happens during thermal warning (OTW) condition?

When junction temperature reaches 130°C, the OTW bit (Reg00 D1) sets high and remains asserted until temperature falls below 125°C hysteresis. The converter continues normal operation - no shutdown or current limiting occurs. OTW is intended for host firmware to initiate proactive throttling (e.g., reduce CPU frequency) before reaching 150°C shutdown threshold.

MP8848GD-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 15-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):: 2.7V

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 0.6V

Voltage - Output (Max):: 1.23V

Current - Output:: 6A

Frequency - Switching:: 1.25MHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 15-QFN (3x2)

MP8848GD-Z FAQ

1.How can I place an order for MP8848GD-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP8848GD-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 MP8848GD-Z reliable?

The price and inventory of MP8848GD-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8848GD-Z is usually 5 days.

3.What payment methods are accepted for MP8848GD-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8848GD-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP8848GD-Z?

MP8848GD-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP8848GD-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 MP8848GD-Z?

For technical support, including MP8848GD-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8848GD-Z requirements.

6.How does Aetrix verify that MP8848GD-Z is sourced from the original manufacturer or authorized distributors?

All MP8848GD-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 MP8848GD-Z meets industry standards.

7.What is the process for return or replacement of MP8848GD-Z?

All MP8848GD-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8848GD-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 MP8848GD-Z part is unused and in its original packaging.

Return procedure for MP8848GD-Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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