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Monolithic Power Systems Inc. MP2153GQFU-18-P
- Part No.:
- MP2153GQFU-18-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 6-UFDFN
- Datasheet:
-
MP2153GQFU-18-P.pdf
- Description:
- IC REG BUCK 1.8V 3A 6UTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,327
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Product details
Overview
MP2153GQFU-18-P from Monolithic Power Systems is a fixed-output 1.8V, 3A synchronous step-down DC/DC converter in UTQFN-6 (1.2mm×1.6mm) package, featuring 25μA quiescent current, 1.1MHz switching frequency, output discharge, and VOUT over-voltage protection - designed for power rail regulation in space-constrained SSDs and portable instrumentation.
For engineers reviewing the MP2153GQFU-18-P datasheet, MP2153GQFU-18-P pinout, MP2153GQFU-18-P application, or MP2153GQFU-18-P equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and electrical specifications, and real-world use-case mapping - all grounded in Monolithic Power's MP2153 Rev. 1.0 documentation.
Technical Context
The MP2153GQFU-18-P employs constant-on-time (COT) control with input voltage feed-forward to maintain stable 1.1MHz operation across 2.5V–5.5V input range while delivering regulated 1.8V ±1% output. Its internal 65mΩ P-channel high-side and 35mΩ N-channel low-side MOSFETs enable up to 3A continuous current with minimal external components.
It integrates cycle-by-cycle current limiting (4A peak), thermal shutdown (160°C), hiccup-mode short-circuit protection, and output discharge via internal MOSFET when EN is low. The fixed 1.8V version replaces FB with PG - an open-drain power-good indicator with 150μs delay and ±5% window relative to nominal output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1% (1773–1827mV over –40°C to +125°C), enabling precise core logic rail regulation without external feedback resistors. |
| Max Output Current | 3A continuous, supported by internal 65mΩ/35mΩ MOSFET pair - eliminates need for external power switches in compact 1.2mm×1.6mm footprint designs. |
| Quiescent Current | 30–35μA (typical at VIN=5V, no switching), sustaining ultra-low standby power for battery-backed SSDs and portable instruments. |
| Switching Frequency | 1.1MHz nominal, stabilized via COT control - allows use of small 1μH inductors and 22μF ceramic output capacitors for minimal board area. |
| Input Voltage Range | 2.5V to 5.5V, compatible with single-cell Li-ion (3.0–4.2V), USB-powered (5V), and wide-input industrial rails without pre-regulation. |
| Thermal Shutdown | 160°C junction temperature with 30°C hysteresis, ensuring robust operation under sustained 3A load in UTQFN-6 package (θJA = 65°C/W on 2-layer PCB). |
| Power Good (PG) | Open-drain output with 150μs delay, active when VOUT is within ±5% of 1.8V - provides reliable system-level power sequencing and fault detection. |
| Output Discharge | Internal discharge MOSFET (RDIS ≈ 200Ω) activates automatically when EN = low - prevents residual voltage hold-up on downstream circuitry during shutdown. |
Pinout & Package
MP2153GQFU-18-P is housed in a 6-pin UTQFN-6 package (1.2mm × 1.6mm, 0.5mm pitch, exposed thermal pad). Pin functions are validated per Monolithic Power's MP2153 Rev. 1.0 datasheet (p.3, p.4, p.6).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for high-current SW node and internal bias circuits; must be connected to low-impedance PCB ground plane. |
| 2 SW | Switching node | Drain of internal high-side P-MOSFET; connects directly to inductor; carries high di/dt ripple requiring tight layout and local decoupling. |
| 3 VIN | Input supply | Unregulated 2.5–5.5V input; requires ≥10μF ceramic capacitor placed adjacent to pin to suppress input voltage spikes. |
| 4 EN | Enable control | Active-high logic input (VEN-H ≥1.2V); internal 1MΩ pull-down enables default disable; triggers automatic output discharge when low. |
| 5 PG | Power good indicator | Open-drain output requiring external 100–500kΩ pull-up to VIN; asserts high when VOUT is within ±5% of 1.8V (1.71–1.89V). |
| 6 OUT | Output sense & power rail | Direct connection to regulated 1.8V output; senses voltage for PG monitoring and internal OVP; requires ≥22μF ceramic output capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ sleep mode | 30–35μA quiescent current enables >10-year battery life in always-on portable instrumentation with intermittent wake cycles. |
| Integrated dual MOSFETs | 65mΩ high-side + 35mΩ low-side silicon reduces conduction loss and eliminates external FET selection, gate drivers, and layout complexity. |
| Output discharge function | On-chip 200Ω discharge path ensures rapid VOUT collapse (<1ms) during EN deactivation - critical for safe hot-swap and multi-rail sequencing. |
| VOUT over-voltage protection | Dynamic regulation triggered at 115% VREF (2.07V) forces low-side turn-on to clamp overshoot; recovers when VFB drops below 105% (1.89V). |
| Hiccup-mode short-circuit response | Enters 100ms–500ms recovery cycle upon current limit violation - limits average power dissipation and prevents thermal runaway during fault conditions. |
| 100% duty-cycle capability | Supports dropout operation down to VIN ≈ VOUT + 0.2V - maintains regulation during brown-out events in battery-powered systems. |
Applications
| Solid-State Drives (SSD) | Portable Instruments |
|---|---|
|
Use Scenario: Regulating 1.8V I/O supply for NAND flash interface and controller logic in M.2 and U.2 SSD modules. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering clean, low-noise 1.8V at up to 3A with fast transient response to burst read/write loads. Use Value: 25μA IQ extends battery-backed write-cache retention time; 1.1MHz switching minimizes EMI near high-speed PCIe lanes. |
Use Scenario: Powering 1.8V analog front-end (AFE) and microcontroller I/O banks in handheld multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Fixed-output DC/DC converter providing stable rail for precision ADC references and digital logic, synchronized via EN for power sequencing. Use Value: PG signal validates rail integrity before MCU boot; output discharge prevents latch-up during battery swap or firmware update resets. |
| Battery-Powered Devices | Multi-Function Printers |
|
Use Scenario: Supplying 1.8V logic rails for Bluetooth SoCs and sensor hubs in wearables and IoT edge nodes. IC Role / Device Role / Timing Role: Ultra-low-IQ step-down regulator enabling deep-sleep modes while maintaining fast wake-up response via COT architecture. Use Value: 30μA IQ reduces annual standby drain to <1mAh; 100% duty cycle supports operation down to 2.0V battery voltage. |
Use Scenario: Generating 1.8V supply for image sensor interfaces and FPGA configuration I/O in compact office printers. IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter mounted near sensor/FPGA to minimize IR drop and noise coupling. Use Value: UTQFN-6 package (1.2×1.6mm) fits dense PCB layouts; thermal shutdown (160°C) protects against fan-failure scenarios in enclosed chassis. |
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 |
|---|---|---|---|
| MP2153GTF-18 | SOT563 package (1.6mm×1.6mm), higher θJA (80°C/W), same electrical specs and pinout except FB→PG mapping. | Less thermally efficient at 3A; requires larger copper area or airflow; preferred where SOT563 reflow compatibility is mandatory. | Select when legacy SOT563 footprint or existing stencil design prohibits UTQFN adoption. |
| TI TPS6286518RQYR | 1.8V fixed, 4A, 1.8MHz, 15μA IQ, WSON-8 (2mm×2mm); lacks output discharge and PG pin. | Higher current and frequency support smaller magnetics but requires external discharge circuitry and lacks rail-valid indication. | Choose for higher-power or faster-transient applications where PG and discharge are handled externally or omitted. |
Compared with MP2153GQFU-18-P, MP2153GTF-18 trades thermal performance for SOT563 compatibility, while TPS6286518RQYR offers higher current and lower IQ but removes integrated discharge and PG - making MP2153GQFU-18-P optimal for space- and feature-constrained 3A 1.8V systems.
Availability
MP2153GQFU-18-P is available at Aetrix Electronics and suitable for solid-state drives, portable instrumentation, battery-powered devices, and multi-function printers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP2153GQFU-18-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 over two decades of innovation in DC/DC converters, LED drivers, and motor controllers.
The MP2153 product line targets ultra-compact, low-IQ power conversion for portable and storage applications - emphasizing minimal external components, thermal efficiency in sub-2mm² packages, and robust protection features for mission-critical subsystems.
FAQ
What is the exact output voltage tolerance of MP2153GQFU-18-P over temperature?
The MP2153GQFU-18-P delivers 1.8V with ±1% initial accuracy at +25°C (1782–1818mV), tightening to ±1.5% over –40°C to +125°C (1773–1827mV) as specified in the Electrical Characteristics table (p.5). This is guaranteed by characterization, not just typical behavior.
Does MP2153GQFU-18-P require external feedback resistors?
No. As a fixed-output variant, MP2153GQFU-18-P has internal resistor divider set to 1.8V and replaces the FB pin with PG. No external resistors are needed - simplifying layout and eliminating resistor tolerance drift from the output regulation path.
How does the output discharge function operate, and what is its resistance?
When EN is pulled low, the MP2153GQFU-18-P automatically activates an internal discharge MOSFET between OUT and GND with typical resistance of 200Ω. This discharges a 22μF output capacitor from 1.8V to <100mV in under 1ms, preventing unsafe residual voltage during system reset.
Can MP2153GQFU-18-P operate at 100% duty cycle, and under what conditions?
Yes - the MP2153GQFU-18-P supports 100% duty cycle when VIN drops near VOUT (e.g., VIN = 2.0V with VOUT = 1.8V). This maintains regulation during battery brown-out, provided input voltage remains above UVLO threshold (2.3V rising) and thermal limits are observed.
What is the power-good (PG) assertion window and delay specification?
PG asserts high when VOUT is within ±5% of 1.8V (1.71–1.89V) and de-asserts when outside that window. It features a fixed 150μs propagation delay from VOUT crossing threshold to PG state change, with <0.4V low-level sink capability at 1mA load.
Is thermal derating required for continuous 3A operation in UTQFN-6?
Yes - at TA = +85°C, maximum continuous output current derates to ~2.4A (per Figure 9, p.9). Full 3A is guaranteed only up to +60°C ambient on a 2-layer 63mm×63mm PCB. For 3A at higher ambient, add thermal vias under the exposed pad or use forced airflow.
Does MP2153GQFU-18-P support forced PWM or auto-mode switching?
No - it uses constant-on-time (COT) control with automatic transition between continuous conduction mode (CCM), discontinuous conduction mode (DCM), and advanced asynchronous modulation (AAM) based on load. There is no user-selectable mode pin or register.
MP2153GQFU-18-P 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):
- 1.8V
- 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-18-P FAQ
1.How can I place an order for MP2153GQFU-18-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2153GQFU-18-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 MP2153GQFU-18-P reliable?
The price and inventory of MP2153GQFU-18-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2153GQFU-18-P is usually 5 days.
3.What payment methods are accepted for MP2153GQFU-18-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2153GQFU-18-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2153GQFU-18-P?
MP2153GQFU-18-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2153GQFU-18-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 MP2153GQFU-18-P?
For technical support, including MP2153GQFU-18-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2153GQFU-18-P requirements.
6.How does Aetrix verify that MP2153GQFU-18-P is sourced from the original manufacturer or authorized distributors?
All MP2153GQFU-18-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 MP2153GQFU-18-P meets industry standards.
7.What is the process for return or replacement of MP2153GQFU-18-P?
All MP2153GQFU-18-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2153GQFU-18-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 MP2153GQFU-18-P part is unused and in its original packaging.
Return procedure for MP2153GQFU-18-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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