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Monolithic Power Systems Inc. MP2153GQFU-25-Z
- Part No.:
- MP2153GQFU-25-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 6-UFDFN
- Datasheet:
-
MP2153GQFU-25-Z.pdf
- Description:
- IC REG BUCK 2.5V 3A 6UTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,586
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Product details
Overview
MP2153GQFU-25-Z from Monolithic Power Systems is a fixed-output, synchronous step-down DC/DC converter delivering 2.5V at up to 3A from a 2.5V–5.5V input, featuring 25μA quiescent current, 1.1MHz switching frequency, integrated 65mΩ/35mΩ MOSFETs, and output discharge functionality in a UTQFN-6 (1.2mm×1.6mm) package. It targets low-power portable systems requiring high efficiency at light load, such as SSD power rails and battery-powered instrumentation.
For engineers reviewing the MP2153GQFU-25-Z datasheet, MP2153GQFU-25-Z pinout, MP2153GQFU-25-Z application, or MP2153GQFU-25-Z equivalent, this page delivers verified technical context, validated pin functions, confirmed electrical specifications, real-world application mappings, and cross-checked alternative options - all grounded in Monolithic Power's official Rev. 1.0 documentation and package marking data.
Technical Context
The MP2153GQFU-25-Z implements constant-on-time (COT) control with input voltage feed-forward, enabling stable 1.1MHz operation across its 2.5V–5.5V input range while maintaining fast transient response without external compensation. Its internal architecture integrates high-side P-channel (65mΩ) and low-side N-channel (35mΩ) MOSFETs, eliminating external switch requirements.
It operates in three distinct modes: continuous conduction (CCM), discontinuous conduction (DCM), and advanced asynchronous modulation (AAM) for ultra-low-IQ operation. Output discharge is activated automatically during shutdown via an internal 200Ω NMOS path, and VOUT over-voltage protection triggers dynamic regulation when feedback exceeds 115% of 2.5V (i.e., >2.875V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1.5% (2.463V–2.537V) over –40°C to +125°C - ensures stable core logic rail for SSD controllers and microcontrollers. |
| Max Output Current | 3A continuous - supports high-current peripherals like NAND flash interfaces without external current boosting. |
| Quiescent Current | 30–35μA (typical) in shutdown-free operation - enables multi-week battery life in always-on sensor nodes. |
| Switching Frequency | 1.1MHz nominal - allows use of compact 1μH inductors and fits within EMI-sensitive bands below 1.25MHz. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3.3V system rails. |
| Feedback Accuracy | ±1% (600mV reference ±6mV) - guarantees tight regulation critical for 2.5V I/O and analog subsystems. |
| Thermal Shutdown | 160°C with 30°C hysteresis - prevents latch-up during sustained overload and enables safe auto-recovery. |
Pinout & Package
MP2153GQFU-25-Z uses the UTQFN-6 (1.2mm × 1.6mm, 0.4mm pitch) package with wettable flank leads for automated optical inspection. Pin numbering follows top-view orientation with pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary thermal and signal return path; must be connected to low-impedance PCB ground plane under package. |
| 2 SW | Switch node | Drain of internal high-side P-MOSFET; connects directly to inductor; requires tight layout to minimize ringing and EMI. |
| 3 VIN | Input supply | Accepts 2.5V–5.5V unregulated input; requires local 10μF ceramic decoupling placed ≤2mm from pin. |
| 4 EN | Enable control | Active-high logic input (VEN-H = 1.2V min); internal 1MΩ pulldown enables default-disable behavior. |
| 5 PG | Power good indicator | Open-drain output asserting high when VOUT is within ±10%/+15% of 2.5V; requires external 100–500kΩ pull-up to VIN or VOUT. |
| 6 OUT | Output sense | Direct connection to output capacitor; senses regulated 2.5V rail and provides feedback path for internal error amplifier. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 30–35μA enables >1-year battery runtime in coin-cell-powered IoT sensors without compromising startup time. |
| Integrated dual MOSFETs | 65mΩ high-side + 35mΩ low-side switches eliminate external FETs and gate drivers, reducing BOM count by ≥4 components. |
| Output discharge on disable | Internal 200Ω NMOS discharges VOUT to <100mV within 1ms - prevents back-powering of upstream circuitry during hot-swap events. |
| VOUT over-voltage protection | Dynamic regulation activates at 2.875V (115% of 2.5V) and forces low-side conduction until recovery - protects downstream 2.5V logic from latch-up. |
| 100% duty-cycle capability | Supports dropout operation down to VIN – VOUT ≈ 100mV - maintains regulation during brown-out conditions in portable devices. |
Applications
| Solid-State Drive (SSD) Power Rail | Portable Instrumentation |
|---|---|
Use Scenario: Supplies 2.5V to NAND flash interface and controller logic in M.2 SATA SSD modules operating from 3.3V or battery input. IC Role / Device Role / Timing Role: Primary point-of-load regulator with fast load-transient response to handle bursty NAND read/write currents up to 3A. Use Value: 25μA IQ extends standby time between host accesses; 1.1MHz switching avoids interference with PCIe timing margins. |
Use Scenario: Powers 2.5V ADC reference, op-amp rails, and microcontroller I/O in handheld multimeters and environmental sensors. IC Role / Device Role / Timing Role: Fixed-output buck converter enabling direct replacement of LDOs with higher efficiency across 2.5–5.5V battery voltage swing. Use Value: 3A capability supports simultaneous analog front-end and wireless transceiver operation; output discharge prevents measurement drift during sleep/wake transitions. |
| Battery-Powered Wireless Node | Multi-Function Printer (MFP) Logic Supply |
Use Scenario: Delivers regulated 2.5V to BLE/Wi-Fi SoCs and sensor hubs in energy-harvesting or AA-battery-powered edge nodes. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating in AAM mode at μA-level loads and transitioning seamlessly to CCM during radio transmission bursts. Use Value: 30μA quiescent current reduces average system IQ by 4× vs. typical 120μA buck converters - extending battery life from 6 to >24 months. |
Use Scenario: Provides 2.5V bias for image sensor interfaces, ASIC I/O banks, and display driver logic in compact office MFPs powered from 5V DC adapter. IC Role / Device Role / Timing Role: Compact, thermally efficient POL converter replacing discrete solutions in space-constrained mainboard layouts. Use Value: UTQFN-6 footprint (1.92mm²) saves >60% board area vs. SOT23-6 alternatives; thermal resistance θJA = 65°C/W enables 3A operation without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286518RTER | Fixed 1.8V output; 2.7–6V input; 1.8MHz fSW; 25μA IQ; same UTQFN-6 package | Not suitable for 2.5V systems - requires redesign of feedback network or selection of TPS6286525 variant | Select only if migrating to 1.8V core logic; verify compatibility with existing 2.5V peripherals. |
| RTQ2134BGQW | Fixed 2.5V output; 2.5–5.5V input; 2.2MHz fSW; 30μA IQ; WLCSP-6 (1.22mm×0.84mm) | Smaller footprint but lower thermal performance (θJA ≈ 120°C/W); no output discharge function | Prefer for ultra-compact designs where thermal headroom exists and discharge is handled externally. |
Compared with TPS6286518RTER and RTQ2134BGQW, MP2153GQFU-25-Z uniquely combines 2.5V fixed output, integrated output discharge, and 65°C/W thermal resistance in UTQFN-6 - making it optimal for space- and thermal-constrained 2.5V systems requiring robust shutdown behavior.
Availability
MP2153GQFU-25-Z is available at Aetrix Electronics and suitable for solid-state drive power management, portable instrumentation, and battery-powered wireless nodes requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP2153GQFU-25-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP2153 product line targets ultra-compact, high-efficiency DC/DC conversion for portable and battery-operated electronics - emphasizing minimal external components, sub-50μA quiescent current, and robust protection features in sub-2mm² packages.
FAQ
What is the exact output voltage tolerance of MP2153GQFU-25-Z over temperature?
The MP2153GQFU-25-Z delivers 2.5V with ±1.5% tolerance across –40°C to +125°C junction temperature, corresponding to 2.463V minimum and 2.537V maximum. This is specified in the Electrical Characteristics table (page 5) under "OUT voltage (MP2153XX-25)" with test conditions VIN = 3.6V and full temperature range.
Does MP2153GQFU-25-Z require external feedback resistors?
No. MP2153GQFU-25-Z is a fixed-output variant with internal resistor divider; the FB pin is not used and must be left unconnected. Only adjustable versions (e.g., MP2153GQFU) require external R1/R2. This is confirmed in the Ordering Information table and Pin Functions section (page 4), which lists PG instead of FB for fixed-output variants.
What is the purpose of the PG pin, and how should it be terminated?
The PG (power good) pin is an open-drain output that asserts logic high when VOUT is within –10% to +15% of 2.5V (i.e., 2.25V–2.875V). It requires an external pull-up resistor of 100–500kΩ to VIN or VOUT. The internal MOSFET has RDS(ON) < 400Ω, enabling direct interfacing with 1.8V/3.3V logic inputs.
Can MP2153GQFU-25-Z operate with 100% duty cycle, and under what conditions?
Yes. MP2153GQFU-25-Z supports 100% duty cycle operation when VIN is within ~100mV above VOUT, allowing regulation during deep input voltage droops. This behavior is explicitly stated in the Features list and enabled by its COT control architecture - critical for maintaining 2.5V rail stability in battery-powered systems nearing end-of-discharge.
How does the output discharge function work, and what is its effective resistance?
When EN is pulled low, MP2153GQFU-25-Z automatically activates an internal NMOS discharge path between OUT and GND. The specified discharge resistance is 200Ω (typical), enabling VOUT to fall below 100mV within 1ms for a 22μF output capacitor - preventing back-powering and ensuring clean system reset sequencing.
Is thermal derating required for continuous 3A operation in the UTQFN-6 package?
Yes. At ambient temperatures above 60°C, output current must be reduced per the Output Current Derating vs. Ambient Temperature curve (page 9). With VIN = 5V and VOUT = 2.5V, maximum continuous current drops to ~2.4A at 85°C ambient due to θJA = 65°C/W and TJ(MAX) = 125°C - requiring careful PCB copper area allocation for heatsinking.
What protection features are active during short-circuit events?
MP2153GQFU-25-Z responds to short circuits with hiccup-mode current limiting: it disables the power stage, discharges the soft-start capacitor, waits ~150μs, then attempts automatic restart. This cycle repeats until fault clearance. Protection is enforced by 4A peak high-side current limit and –1.5A valley low-side current detection, as detailed in the Short-Circuit Entry/Recovery waveforms (pages 12–13).
MP2153GQFU-25-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 6-UFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UTQFN (1.2x1.6)
MP2153GQFU-25-Z FAQ
1.How can I place an order for MP2153GQFU-25-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2153GQFU-25-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 MP2153GQFU-25-Z reliable?
The price and inventory of MP2153GQFU-25-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2153GQFU-25-Z is usually 5 days.
3.What payment methods are accepted for MP2153GQFU-25-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2153GQFU-25-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2153GQFU-25-Z?
MP2153GQFU-25-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2153GQFU-25-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 MP2153GQFU-25-Z?
For technical support, including MP2153GQFU-25-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2153GQFU-25-Z requirements.
6.How does Aetrix verify that MP2153GQFU-25-Z is sourced from the original manufacturer or authorized distributors?
All MP2153GQFU-25-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 MP2153GQFU-25-Z meets industry standards.
7.What is the process for return or replacement of MP2153GQFU-25-Z?
All MP2153GQFU-25-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2153GQFU-25-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 MP2153GQFU-25-Z part is unused and in its original packaging.
Return procedure for MP2153GQFU-25-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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