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

Monolithic Power Systems Inc. MP6004GQ-P

Name: MP6004GQ-P
Brand: Monolithic Power Systems Inc.
SKU: MP6004GQ-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP6004GQ-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 14-VFDFN Exposed Pad

Datasheet:: MP6004GQ-P.pdf

Description:: IC REG BUCK FLYBACK ADJ 3A 14QFN

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Product details

Overview

MP6004GQ-P from Monolithic Power Systems is a primary-side regulated flyback/buck DC-DC converter with an integrated 180 V MOSFET, supporting up to 80 V input and delivering up to 13 W in isolated or non-isolated topologies. It operates in fixed peak-current, variable-frequency DCM with ±1.99 V FB1 reference voltage, 5.4 V internal VCC regulation, and 200 kHz max switching frequency - optimized for PoE-powered security cameras and VoIP phones.

For engineers reviewing the MP6004GQ-P datasheet, MP6004GQ-P pinout, MP6004GQ-P application, or MP6004GQ-P equivalent, key selection criteria include primary-side regulation capability without opto-coupler, programmable 3 A current limit via ILIM resistor, buck/flyback mode selection via MODE pin, and QFN-14 thermal performance (θJA = 50°C/W).

Technical Context

The MP6004GQ-P implements dual-mode topology control: MODE pin grounded enables flyback operation with FB1-sampled auxiliary winding voltage for output regulation; floating MODE selects buck mode using FB2 referenced to VIN. Its DCM control uses fixed peak current and variable frequency, with 450 ns leading-edge blanking to suppress switch-node noise during current sensing.

Protection architecture includes cycle-by-cycle over-current detection, 125% VREF1-based OVP on FB1, open-circuit detection via -60 mV FB1 falling edge, and thermal shutdown at 150°C with 20°C hysteresis. The 80 V start-up circuit enables operation down to 11.6 V VIN UVLO rising threshold while maintaining 5.4 V VCC regulation.

Key Specifications

Parameter	Value and Actual Design Meaning
Topology Support	Flyback (primary-side regulated) and buck - selected by MODE pin state; no external opto-coupler required in flyback mode.
Input Voltage Range	14 V to 80 V - supports PoE+ (57 V) and industrial 24/48 V rails with 11.6 V UVLO rising threshold.
Integrated Switch	180 V rated MOSFET with 0.8 Ω R_DS(on) - enables direct 80 V buck conversion and 13 W flyback isolation.
Feedback Reference	FB1: 1.99 V ±0.06 V (–40°C to +125°C); FB2: –1.88 V ±0.08 V - enables precise output voltage setting in both modes.
Current Limit	Programmable up to 3 A via ILIM-to-GND resistor - sets peak primary current for power scaling and overload protection.
Switching Frequency	Variable DCM up to 200 kHz - automatically reduces under light load to maintain regulation without burst mode artifacts.
Thermal Protection	150°C shutdown with 130°C restart - ensures safe operation in sealed enclosures like IP67 security camera housings.

Pinout & Package

MP6004GQ-P is housed in a thermally enhanced QFN-14 package (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad. Pin 1 is located at the bottom-left corner adjacent to the pin-1 marker dot.

Pin/Terminal	Circuit Role	Design Meaning
1, 2 GND	Power return path	Low-impedance ground for switching node and control logic; must connect to thermal pad for θJA = 50°C/W.
3 EN	Enable control input	Active-high logic input (3.9 V high / 1.3 V low); used to program VIN UVLO with Zener/resistor network.
4, 12 NC	No internal connection	Must be left floating or tied to GND per layout guidelines - no electrical function.
5 VIN	Main power input	Accepts 14–80 V; powers internal LDO and high-voltage switch; absolute max 100 V.
6 FB2	Buck-mode feedback	Referenced to VIN; used with resistor divider to set negative-referenced output voltage in non-isolated buck.
7 MODE	Topology select	Pulled up internally to VCC; grounded for flyback, floating for buck - determines FB1/FB2 activation.
8 FB1	Flyback-mode feedback	Monitors auxiliary winding voltage during secondary conduction; samples after 0.7 μs off-time delay.
9 ILIM	Current limit programming	Connects to GND via resistor to set peak current limit (1.85–2.25 A typical at R_ILIM = 53.6 kΩ).
10 AGND	Analog ground reference	Separate analog return for feedback and sensing circuits; must tie to power GND at single point.
11 VCC	Bias supply rail	Internally regulated at 5.4 V; requires ≥1 µF ceramic capacitor to GND; can be powered from auxiliary winding.
13, 14 SW	Switch node	Drain of integrated 180 V MOSFET; connects to primary inductor (flyback) or buck inductor/diode.

Key Features

Feature	Design Value
Primary-side regulation	Eliminates opto-coupler and TL431 in flyback designs - reduces BOM count by ≥3 components and improves long-term stability.
Dual topology support	Single IC serves isolated PoE endpoints (flyback) and compact non-isolated supplies (buck) - cuts inventory SKUs and design reuse time.
Flexible VCC sourcing	Supports self-power from VIN LDO or external auxiliary winding - improves efficiency >2% in flyback by bypassing high-voltage LDO loss.
Robust protection suite	Includes OLP, OVP, open-circuit, and thermal shutdown - enables unattended operation in remote security camera deployments.
DCM with frequency foldback	Maintains regulation down to zero load in buck mode; limits minimum frequency to ~10 kHz in flyback to prevent OVP drift.

Applications

Security Cameras

VoIP Phones

Use Scenario: Powering 12 V/1 A PoE-powered IP camera with isolated output and wide input range (37–57 V).

IC Role / Device Role / Timing Role: Primary-side regulated flyback controller managing transformer energy transfer, FB1 sampling, and DCM frequency modulation.

Use Value: Enables compact, cost-effective 13 W isolated supply without opto-coupler aging or temperature drift - critical for outdoor camera reliability.

Use Scenario: Generating 3.3 V/0.5 A local supply from 48 V PoE in desktop VoIP handsets.

IC Role / Device Role / Timing Role: High-voltage buck regulator using FB2 feedback and MODE pin in floating configuration.

Use Value: Reduces solution size by 40% vs. two-stage (48 V → 12 V → 3.3 V) approach while maintaining tight output regulation.

WLAN Access Points

Industrial Sensors

Use Scenario: Providing isolated 5 V/2 A power for dual-band 802.11ac AP radios with EMI-sensitive RF sections.

IC Role / Device Role / Timing Role: Flyback controller with DCM operation minimizing conducted EMI; FB1 timing synchronized to secondary diode conduction.

Use Value: Achieves CISPR-32 Class B compliance without additional filtering - accelerates wireless certification.

Use Scenario: Non-isolated 24 V to 5 V conversion in DIN-rail mounted sensor transmitters with 15–80 V input range.

IC Role / Device Role / Timing Role: Buck regulator operating in DCM across full load range, leveraging ILIM-programmed current limit for fault containment.

Use Value: Supports wide-input industrial rails while limiting fault energy to <100 mJ - meets IEC 61000-4-5 surge immunity requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar primary-side regulated flyback/buck applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP6003GQ-Z	Same QFN-14 package but lacks FB2 pin and buck-mode support; only flyback capable.	Cannot replace MP6004GQ-P in buck applications; suitable only where isolation is mandatory.	Select when design requires flyback-only operation and lower BOM cost is prioritized over topology flexibility.
UCC28740DR	TI part with 700 V MOSFET, higher voltage rating but no buck mode; uses different DCM control algorithm.	Requires opto-coupler for regulation; not pin-compatible and needs redesign of feedback network and layout.	Choose only if 700 V input capability is required and TI ecosystem compatibility outweighs MP6004's integration benefits.

Compared with MP6004GQ-P, MP6003GQ-Z sacrifices buck functionality for lower gate charge and marginally better light-load efficiency in flyback, while UCC28740DR trades topology flexibility for higher input voltage tolerance but adds opto-coupler complexity and board area.

Availability

MP6004GQ-P is available at Aetrix Electronics and suitable for security camera power supplies, VoIP phone local regulators, WLAN access point isolated converters, and industrial sensor buck converters requiring stable component supply across extended temperature ranges (–40°C to +125°C).

Supply support for MP6004GQ-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 analog and power ICs, with over 20 years of expertise in DC-DC conversion and power management.

The MP6004 belongs to MPS's primary-side regulated flyback/buck product line, designed specifically to reduce system cost and size in PoE-powered endpoint devices while maintaining robust protection and thermal performance.

FAQ

What is the maximum continuous output power achievable with MP6004GQ-P in flyback mode?

The MP6004GQ-P is rated for up to 13 W in isolated flyback applications, validated at 48 V input and 12 V/1 A output with 85% typical efficiency. This limit arises from thermal constraints in the QFN-14 package (θJA = 50°C/W) and the 3 A peak current limit, not from switching frequency or MOSFET R_DS(on). Higher power requires forced air cooling or derating above 85°C ambient.

How does the MP6004GQ-P achieve primary-side regulation without an opto-coupler?

It samples the auxiliary winding voltage at FB1 during the secondary diode conduction period, using a 1.99 V internal reference and precise timing window (0.7–3.7 μs after MOSFET turn-off). The sampled voltage correlates to output voltage via transformer turns ratio and diode drop compensation, enabling regulation accuracy within ±5% across line/load/temperature without opto-coupler feedback.

Can MP6004GQ-P operate with input voltage below 14 V?

No - the absolute minimum recommended operating VIN is 14 V per datasheet specifications, and the UVLO rising threshold is 11.6 V. Operation below 14 V risks unstable startup, insufficient VCC charging, and failure to sustain regulation due to reduced gate drive margin on the 180 V MOSFET. Designs requiring <14 V input must use a pre-regulator stage.

What is the purpose of the MODE pin, and how should it be configured?

The MODE pin selects topology: grounded for flyback (enabling FB1 feedback and auxiliary winding sampling), floating for buck (enabling FB2 feedback referenced to VIN). It is pulled up internally to VCC with 1.5 µA, so no external pull-up is needed in buck mode. Connecting MODE to VIN or adding series resistance to GND in flyback mode violates specification and causes malfunction.

Does MP6004GQ-P support synchronous rectification?

No - the MP6004GQ-P is designed for use with external Schottky or fast recovery diodes in flyback mode and does not provide gate drive signals for synchronous rectifiers. Its control loop and DCM detection rely on diode conduction timing, and adding SR would require external timing circuitry incompatible with its FB1 sampling window.

What is the minimum recommended output capacitance for stable regulation?

A minimum of 47 µF low-ESR electrolytic or polymer capacitor is required at the output in flyback mode to maintain regulation during transient load steps and suppress low-frequency ripple from DCM operation. In buck mode, ≥22 µF is sufficient due to higher effective switching frequency and tighter VCC coupling.

How is over-voltage protection triggered in flyback mode?

OVP activates when FB1 voltage exceeds 125% of its 1.99 V reference (≈2.49 V), causing immediate shutdown and hiccup-mode restart. It also triggers if the FB1 falling edge fails to reach –60 mV - indicating open feedback resistors or broken auxiliary winding - providing dual-fault coverage for safety-critical PoE endpoints.

MP6004GQ-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 14-VFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck, Flyback

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 14V

Voltage - Input (Max):: 80V

Voltage - Output (Min/Fixed):: -0.5V

Voltage - Output (Max):: 150V

Current - Output:: 3A (Switch)

Frequency - Switching:: 200kHz

Synchronous Rectifier:: No

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-QFN (3x3)

MP6004GQ-P FAQ

1.How can I place an order for MP6004GQ-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP6004GQ-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 MP6004GQ-P reliable?

The price and inventory of MP6004GQ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6004GQ-P is usually 5 days.

3.What payment methods are accepted for MP6004GQ-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6004GQ-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP6004GQ-P?

MP6004GQ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP6004GQ-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 MP6004GQ-P?

For technical support, including MP6004GQ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6004GQ-P requirements.

6.How does Aetrix verify that MP6004GQ-P is sourced from the original manufacturer or authorized distributors?

All MP6004GQ-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 MP6004GQ-P meets industry standards.

7.What is the process for return or replacement of MP6004GQ-P?

All MP6004GQ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP6004GQ-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 MP6004GQ-P part is unused and in its original packaging.

Return procedure for MP6004GQ-P:

1.Submit a request within 90 days.

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

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