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

Monolithic Power Systems Inc. MP8862GQ-0000-P

Name: MP8862GQ-0000-P
Brand: Monolithic Power Systems Inc.
SKU: MP8862GQ-0000-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP8862GQ-0000-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-PowerVFQFN

Datasheet:: MP8862GQ-0000-P.pdf

Description:: IC REG BUCK BOOST ADJ 2A 16QFN

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Product details

Overview

MP8862GQ-0000-P from Monolithic Power Systems is a synchronous 4-switch integrated buck-boost DC/DC converter with I²C interface, operating across 2.8V–22V input and delivering up to 2A output current at programmable 1V–20.47V output voltage. It employs COT control in buck mode and COT-derived constant-off-time in boost mode for fast transient response and seamless mode transitions. Used in DSLR camera power rails where input varies from battery discharge (3.2V) to USB PD (12V/20V) while maintaining stable 5V/9V/12V sensor or display supply.

For engineers reviewing the MP8862GQ-0000-P datasheet, MP8862GQ-0000-P pinout, MP8862GQ-0000-P application, or MP8862GQ-0000-P equivalent, key selection criteria include its I²C-programmable output voltage (10mV resolution), OTP-configurable soft-start (900μs default), hiccup-mode OVP/SCP protection, and dual-mode switching frequency (500kHz forced PWM, variable in PFM).

Technical Context

The MP8862 implements a single-inductor, four-MOSFET buck-boost topology with independent high-side and low-side switch control per half-bridge (SW1/SW2 nodes). Its hybrid control scheme uses constant-on-time regulation during buck operation and constant-off-time during boost, enabling smooth transitions when VIN ≈ VOUT without discontinuous conduction or output droop.

Internal architecture integrates four 30–80mΩ R_DS(ON) MOSFETs, a 3.65V internal LDO (VCC), analog ground (AGND) isolation, bootstrap drivers (BST1/BST2), and an I²C slave interface supporting four address configurations via ADD pin resistor dividers. Fault reporting occurs through open-drain ALT pin with thermal warning and shutdown thresholds at 150°C (±20°C hysteresis).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.8V to 22V - supports wide-input industrial and portable systems including multi-cell Li-ion and USB-C PD sources.
Output Voltage Range	1V to 20.47V with 10mV I²C resolution - enables precise rail tuning for image sensors, FPGAs, or display bias without external DAC.
Max Output Current	2A continuous - sufficient for powering CMOS image sensors, microcontrollers, and RF modules in compact DSLR or medical imaging devices.
Switching Frequency	500kHz (forced PWM) - balances EMI, inductor size (4.7µH typical), and efficiency across load range.
Protection Features	OCP (hiccup/latch), OVP (160% VREF hiccup), UVP (50% VREF), thermal shutdown (150°C) - ensures robust operation under fault conditions without external circuitry.
I²C Interface	Up to 3.4MHz clock, four programmable addresses, OTP storage - allows dynamic configuration and system-level telemetry in host-managed power architectures.
Package	QFN-16 (3mm × 3mm, 0.5mm pitch) - thermally enhanced layout with exposed pad for ≤26°C/W θ_JA on 4-layer PCB.

Pinout & Package

MP8862GQ-0000-P is housed in a thermally optimized 16-pin QFN package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad. The pinout supports compact 4-switch buck-boost layout with dedicated BST1/BST2 bootstrap nodes, isolated AGND, and dual switching nodes (SW1/SW2) for single-inductor connection.

Pin/Terminal	Circuit Role	Design Meaning
1 IN	Main power input	Drain node of internal high-side buck switch; requires local 100µF low-ESR input capacitor to suppress VIN ripple and spikes.
2,11 GND	Power ground reference	Primary return path for output current and switching loop; must be connected with multiple vias to internal ground plane.
3 EN	Enable control	Active-high logic input (1.1V threshold); internal 2MΩ pull-down enables default-off behavior for safe power sequencing.
4 ADD	I²C address select	Analog voltage divider input setting one of four I²C slave addresses (69H–6FH); enables multi-device bus sharing.
5 SCL / 6 SDA	I²C serial interface	Standard bidirectional bus pins supporting 400kHz–3.4MHz; tolerate 1.8V–5V logic levels for direct MCU interfacing.
7 OC	Current limit set	Analog pin configuring output CC limit via external resistor (21.5kΩ = 3A default); enables adjustable short-circuit protection.
8 ALT	Fault alert output	Open-drain active-low signal indicating OVP, OCP, or thermal warning; sinks 4mA at 0.4V for direct MCU interrupt use.
9 VCC	Internal LDO output	3.65V regulated supply for gate drivers and logic; requires 1µF ceramic decoupling adjacent to pin.
10 AGND	Analog ground	Separate ground for feedback and sensing circuits; must be tied to GND at single point near VCC decoupling.
12 OUT	Regulated output	High-current power output node; connects directly to output capacitor bank (100µF + 22µF ceramic typical).
13 BST2 / 16 BST1	Bootstrap supplies	Drive floating gates of high-side switches SW2/SW1; require 100nF X7R capacitors between BSTx and respective SWx pins.
14 SW2 / 15 SW1	Switching nodes	Connection points for inductor center-tap; carry high di/dt currents; must be routed with minimal loop area and copper weight.

Key Features

Feature	Design Value
I²C-programmable output voltage	1V–20.47V in 10mV steps - eliminates external resistive feedback network and enables runtime rail adjustment for multi-voltage SoCs.
OTP-configurable startup timing	900μs soft-start time stored in one-time programmable memory - prevents inrush current in battery-powered systems without external RC components.
Auto PFM/PWM or forced PWM mode	Configurable via I²C register - maintains 500kHz switching under light loads (PFM) or enforces fixed frequency for predictable EMI filtering (PWM).
Integrated line drop compensation	Programmable via I²C - compensates for IR drop across PCB traces or connectors to maintain accurate remote-sense output regulation.
Four internal MOSFETs with low R_DS(ON)	30–80mΩ (HS/LS) - reduces conduction loss and eliminates need for external power stage, shrinking BOM and layout area by >40% vs discrete solutions.

Applications

DSLR Camera Power Management

Industrial Bus Converter

Use Scenario: Powering image sensor, ISP, and LCD backlight from variable input (3.2V–20V) during battery discharge or USB-C PD negotiation.

IC Role / Device Role / Timing Role: Primary buck-boost regulator providing stable 5V/9V/12V rails with <±1.5% load regulation and <0.3% line regulation over full VIN range.

Use Value: Eliminates need for separate buck and boost converters, reducing solution size by 35% and enabling single-stage conversion from Li-ion to 12V display rail.

Use Scenario: Generating 5V/12V auxiliary power from wide-range 12–24V industrial bus with strict thermal limits in enclosed enclosures.

IC Role / Device Role / Timing Role: High-efficiency (≥90% at 1A) buck-boost converter with hiccup-mode OVP/OCP and thermal warning (ALT pin) for predictive maintenance.

Use Value: Maintains regulation down to 2.8V input, allowing continued operation during brownout events common in factory automation PLCs.

Personal Medical Imaging Device

USB-C Powered Portable Instrument

Use Scenario: Supplying regulated 3.3V and 5V rails to ultrasound transducer array and ADC in handheld diagnostic tool powered by single-cell Li-ion.

IC Role / Device Role / Timing Role: Single-chip buck-boost with programmable CC limit (via OC pin) and I²C telemetry for real-time current monitoring and safety compliance.

Use Value: Enables precise current limiting for transducer excitation pulses while meeting IEC 60601-1 leakage and fault tolerance requirements.

Use Scenario: Accepting USB-C PD input (5V/9V/15V/20V) and delivering stable 5V/3.3V to embedded processor and wireless module in field-deployable test equipment.

IC Role / Device Role / Timing Role: Input-flexible buck-boost with I²C-configurable VOUT and soft-start to prevent USB port overcurrent trip during hot-plug events.

Use Value: Supports full USB-C PD profile negotiation without external level shifters or voltage translators, simplifying firmware integration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck-boost converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LT8390AEMSE#PBF	Higher 60V max VIN, 3.5A output, no integrated MOSFETs - requires external FETs and more complex layout.	Targeted at automotive (AEC-Q100) and high-reliability industrial use; lacks I²C interface and OTP configuration.	Select when >22V input or >2A output is required, and system can accommodate external power stage and analog programming.
TPS63020DSJR	Lower 5.5V max VIN, 3A output, no I²C - uses analog resistor programming and lacks hiccup-mode protections.	Optimized for portable consumer electronics with single-cell Li-ion input only; no support for USB-C PD or industrial input ranges.	Select for cost-sensitive, low-VIN (<5.5V) applications where digital configurability and wide input are not needed.

Compared with LT8390A and TPS63020, MP8862GQ-0000-P uniquely combines 22V input capability, I²C programmability, OTP storage, and integrated 4-switch power stage in a 3mm×3mm QFN - making it optimal for space-constrained, software-configurable systems requiring input flexibility and fault telemetry.

Availability

MP8862GQ-0000-P is available at Aetrix Electronics and suitable for DSLR camera power management, industrial bus conversion, personal medical imaging devices, and USB-C powered portable instruments requiring stable component supply, consistent OTP configuration, and long-term lifecycle support.

Supply support for MP8862GQ-0000-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, and global distribution through authorized partners.

The MP8862 belongs to MPS's integrated buck-boost converter product line, engineered for applications demanding wide-input voltage operation, digital configurability, and compact form factor - particularly in portable imaging, industrial automation, and USB-C powered systems.

FAQ

What is the default output voltage and how is it set?

The MP8862GQ-0000-P defaults to 5V output voltage, programmed into its one-time programmable (OTP) memory during manufacturing. This value is stored in the device's internal register and loaded at power-up; it can be overridden via I²C commands during runtime but reverts to 5V after reset unless reprogrammed and saved to OTP.

Does MP8862GQ-0000-P support true buck-boost mode without external components?

Yes - MP8862GQ-0000-P integrates all four power MOSFETs, bootstrap diodes, error amplifier, and mode-transition logic in a single QFN-16 package. No external switches, drivers, or mode-control circuitry are required to operate across buck, boost, and buck-boost regions; only input/output capacitors, inductor, and optional OC/ADD resistors are needed.

How does the I²C interface handle address conflicts in multi-device systems?

The MP8862GQ-0000-P supports four unique I²C slave addresses (69H–6FH) selected by analog voltage on the ADD pin using resistor dividers. This allows up to four identical MP8862 devices on the same bus without address collision, enabling redundant power rails or multi-output configurations managed by a single controller.

What thermal protection mechanisms are implemented?

MP8862GQ-0000-P includes over-temperature warning (ALT pin assertion at ~130°C) and thermal shutdown (150°C ±20°C hysteresis). When temperature exceeds the warning threshold, ALT pulls low to signal host MCU; if shutdown threshold is reached, the device halts switching and auto-restarts after cooling below 130°C, ensuring safe recovery without manual reset.

Can output current limiting be adjusted without changing hardware?

Yes - the output constant-current (CC) limit is set via the OC pin using an external resistor (default 21.5kΩ = 3A), but it can also be reconfigured dynamically via I²C register writes. This allows software-defined current limiting for different operational modes (e.g., 1.5A for standby, 3A for active imaging), enhancing system-level power management flexibility.

Is there a recommended evaluation board for rapid prototyping?

Yes - the EVKT-MP8862 evaluation kit includes the EV8862-Q-00A board populated with MP8862GQ-0000-P, plus USB-to-I²C interface (EVKT-USBI2C-02) and GUI software. It supports full I²C register access, real-time telemetry, and configurable VOUT, soft-start, and protection settings - accelerating validation of buck-boost designs.

MP8862GQ-0000-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 16-PowerVFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Function:: Step-Up/Step-Down

Output Configuration:: Positive

Topology:: Buck-Boost

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 2.8V

Voltage - Input (Max):: 22V

Voltage - Output (Min/Fixed):: 1V

Voltage - Output (Max):: 20.47V

Current - Output:: 2A

Frequency - Switching:: 530kHz

Synchronous Rectifier:: Yes

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (3x3)

MP8862GQ-0000-P FAQ

1.How can I place an order for MP8862GQ-0000-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP8862GQ-0000-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 MP8862GQ-0000-P reliable?

The price and inventory of MP8862GQ-0000-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP8862GQ-0000-P is usually 5 days.

3.What payment methods are accepted for MP8862GQ-0000-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8862GQ-0000-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP8862GQ-0000-P?

MP8862GQ-0000-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP8862GQ-0000-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 MP8862GQ-0000-P?

For technical support, including MP8862GQ-0000-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8862GQ-0000-P requirements.

6.How does Aetrix verify that MP8862GQ-0000-P is sourced from the original manufacturer or authorized distributors?

All MP8862GQ-0000-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 MP8862GQ-0000-P meets industry standards.

7.What is the process for return or replacement of MP8862GQ-0000-P?

All MP8862GQ-0000-P units undergo pre-shipment inspection (PSI). If there is an issue with MP8862GQ-0000-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 MP8862GQ-0000-P part is unused and in its original packaging.

Return procedure for MP8862GQ-0000-P:

1.Submit a request within 90 days.

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

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