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Monolithic Power Systems Inc. MP2153GQFU-Z
- Part No.:
- MP2153GQFU-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 6-UFDFN
- Datasheet:
-
MP2153GQFU-Z.pdf
- Description:
- IC REG BUCK ADJ 3A 6UTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,699
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Product details
Overview
MP2153GQFU-Z from Monolithic Power Systems is a monolithic synchronous step-down DC/DC converter with integrated 65mΩ high-side and 35mΩ low-side MOSFETs, delivering up to 3A continuous output current from a 2.5V–5.5V input. It features 25μA quiescent current, 1.1MHz fixed switching frequency, constant-on-time (COT) control for fast transient response, and output discharge during shutdown - optimized for space-constrained portable and SSD power rails.
For engineers reviewing the MP2153GQFU-Z datasheet, MP2153GQFU-Z pinout, MP2153GQFU-Z application, or MP2153GQFU-Z equivalent, key selection considerations include ultra-low IQ for battery longevity, COT-based light-load efficiency in AAM mode, 0.6V minimum adjustable output, 100% duty-cycle capability for low-dropout operation, and UTQFN-6 package thermal performance (θJA = 65°C/W).
Technical Context
The MP2153GQFU-Z implements constant-on-time (COT) control with input voltage feed-forward, enabling stable 1.1MHz switching across its full 2.5V–5.5V input range and supporting output voltages as low as 0.6V via external resistor divider on FB. Its sleep-mode architecture disables non-critical blocks while maintaining regulation via clamped error amplifier and internal 0.6V reference, achieving 25μA IQ at no load.
Fault protection includes cycle-by-cycle current limiting (4A high-side peak), hiccup-mode short-circuit recovery, VOUT over-voltage protection (115% VFB threshold with dynamic discharge), and thermal shutdown at 160°C with 30°C hysteresis. The EN pin enables precise power sequencing with 1.2V logic-high threshold and internal 1MΩ pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V rail inputs without pre-regulation. |
| Output Current | Up to 3A continuous - sufficient for core logic, memory, and I/O rails in SSDs and portable instruments. |
| Quiescent Current | 25μA - enables >1-year battery life in always-on sensor nodes or standby subsystems. |
| Switching Frequency | 1.1MHz - allows use of compact 1μH inductors and reduces EMI filtering footprint. |
| Feedback Accuracy | ±1% at 25°C (594–606mV) - ensures tight output regulation for sensitive analog or RF circuitry. |
| MOSFET RDS(on) | 65mΩ (HS) / 35mΩ (LS) - minimizes conduction loss and thermal rise at full 3A load. |
| Soft-Start Time | 0.5ms - prevents inrush current and output overshoot during power-up sequences. |
Pinout & Package
MP2153GQFU-Z is housed in an ultra-small UTQFN-6 package (1.2mm × 1.6mm, 0.5mm pitch), optimized for high-density PCB layouts and thermal performance (θJA = 65°C/W on 2-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for high-current SW node and IC bias; must be connected to low-impedance ground plane. |
| 2 SW | Switching node | Drain of internal high-side P-MOSFET; connects directly to inductor; carries high di/dt and requires tight layout. |
| 3 VIN | Input supply | Accepts 2.5V–5.5V unregulated input; requires local 10μF ceramic decoupling adjacent to pin. |
| 4 EN | Enable control | Active-high logic input (1.2V threshold); internal 1MΩ pull-down enables default-disable behavior. |
| 5 FB | Feedback sense | Resistor-divider tap point for output voltage regulation; 600mV reference enables 0.6V–5.5V adjustable outputs. |
| 6 OUT | Output sense | Direct connection to output capacitor; used for output voltage sensing and discharge path activation during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Output Discharge | Internal MOSFET actively discharges output capacitor when EN = low, preventing floating voltage and enabling safe hot-swap. |
| VOUT Over-Voltage Protection | Dynamically forces low-side FET on to sink current until VFB drops below 105% of reference - protects downstream loads from regulator fault or feedback failure. |
| Advanced Asynchronous Modulation (AAM) | Automatically enters light-load power-save mode with zero-current detection, sustaining >85% efficiency down to 1mA load. |
| 100% Duty Cycle Operation | Supports dropout-free regulation when VIN ≈ VOUT - critical for battery-powered systems nearing end-of-life voltage. |
| Short-Circuit Protection | Hiccup-mode recovery limits average power dissipation during sustained overload, preventing thermal runaway without external circuitry. |
Applications
| Solid-State Drives (SSD) | Portable Instruments |
|---|---|
Use Scenario: Powering NAND flash controller and DRAM cache in M.2 NVMe SSDs with strict size and thermal constraints. IC Role / Device Role / Timing Role: Primary 1.2V/3A core supply regulator with fast load-transient response to handle bursty read/write operations. Use Value: 1.1MHz switching and 25μA IQ extend battery runtime in portable SSD enclosures while minimizing PCB area. |
Use Scenario: Supplying precision analog front-end (AFE) and microcontroller in handheld multimeters or gas detectors. IC Role / Device Role / Timing Role: Low-noise, tightly regulated 3.3V rail generator with <1% FB accuracy and minimal load regulation drift. Use Value: Output discharge ensures safe power-down sequencing and eliminates residual voltage that could corrupt ADC calibration data. |
| Battery-Powered IoT Sensors | Multi-Function Printers (MFP) |
Use Scenario: Providing 1.8V logic supply for BLE SoC and environmental sensors in coin-cell–powered nodes. IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter operating in AAM mode during deep-sleep intervals between sensor readings. Use Value: 25μA quiescent current enables >5-year battery life on CR2032, validated across -40°C to +85°C ambient. |
Use Scenario: Generating 5V auxiliary rail for paper-handling motors and interface logic in compact desktop MFPs. IC Role / Device Role / Timing Role: High-efficiency 3A intermediate supply stepping down from 12V main rail to reduce heat in enclosed chassis. Use Value: UTQFN-6 package and 65mΩ/35mΩ MOSFETs limit thermal rise to <25°C above ambient at full load, eliminating need for heatsinks. |
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 |
|---|---|---|---|
| MP2152GQFU-Z | 2A output current rating, identical 25μA IQ and UTQFN-6 package; lacks output discharge function. | Not suitable where safe shutdown discharge is required (e.g., hot-swap, battery-backed systems). | Select MP2152GQFU-Z only if 2A max load suffices and discharge is unnecessary - saves cost without sacrificing efficiency or footprint. |
| TPS62865RRLR | 3A output, 1.8MHz switching, 17μA IQ, but requires external compensation and has no integrated output discharge. | Higher-frequency operation demands smaller inductors but increases EMI sensitivity; no built-in discharge necessitates external circuitry. | Choose TPS62865RRLR only when system-level EMI filtering and layout margin allow higher frequency, and discharge is handled externally. |
Compared with MP2152GQFU-Z, MP2153GQFU-Z adds 1A current headroom and critical output discharge; versus TPS62865RRLR, it trades slightly higher IQ for integrated protection, simpler layout, and guaranteed discharge behavior without external components.
Availability
MP2153GQFU-Z is available at Aetrix Electronics and suitable for solid-state drives, portable instrumentation, battery-powered IoT sensors, and multi-function printers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP2153GQFU-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 focus on efficiency, integration, and miniaturization for portable and industrial applications.
The MP2153 belongs to MPS's ultra-low-IQ synchronous buck converter product line, engineered specifically for space- and energy-constrained applications such as SSDs, wearables, and battery-operated test equipment.
FAQ
What is the minimum output voltage achievable with MP2153GQFU-Z?
The MP2153GQFU-Z supports output voltages as low as 0.6V using an external resistor divider on the FB pin, leveraging its internal 600mV reference with ±1% accuracy. This enables direct powering of modern low-voltage cores like ARM Cortex-M series and LPDDR memory interfaces without additional post-regulation stages.
Does MP2153GQFU-Z require external compensation components?
No - the MP2153GQFU-Z uses constant-on-time (COT) control architecture with inherent loop stability, eliminating the need for external compensation networks. This simplifies design, reduces BOM count, and improves immunity to output capacitor ESR variations compared to traditional voltage-mode or current-mode PWM regulators.
How does the output discharge function operate during shutdown?
When EN is pulled low, the MP2153GQFU-Z activates an internal discharge MOSFET between OUT and GND, presenting a ~200Ω resistive path. This safely bleeds stored charge from the output capacitor within milliseconds, preventing residual voltage that could interfere with system reset sequencing or damage downstream components.
Can MP2153GQFU-Z operate with input voltage equal to the output voltage?
Yes - the MP2153GQFU-Z supports 100% duty-cycle operation, allowing VIN to drop to within ~100mV of VOUT while maintaining regulation. This feature is essential for battery-powered systems where input voltage decays near end-of-life, ensuring uninterrupted operation without brownout.
What thermal performance can be expected in the UTQFN-6 package?
On a standard 2-layer PCB (63mm × 63mm), the MP2153GQFU-Z in UTQFN-6 achieves θJA = 65°C/W. At 3A load with 5V input and 1.2V output, junction temperature rise is approximately 35°C above ambient - well within the 125°C maximum operating junction temperature, even in sealed enclosures.
Is the EN pin compatible with open-drain microcontroller GPIOs?
Yes - the EN pin has an internal 1MΩ pull-down resistor and requires only 1.2V to assert. An open-drain MCU GPIO pulled up to 3.3V or 5V can directly drive EN, enabling clean power sequencing without external level-shifting or pull-up components.
Does MP2153GQFU-Z support forced PWM mode?
No - the MP2153GQFU-Z operates exclusively in automatic mode, transitioning between CCM, DCM, and AAM based on load. It does not offer a forced PWM pin or register setting; this simplifies design but means light-load efficiency is maximized via native AAM rather than fixed-frequency operation.
MP2153GQFU-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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- 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-Z FAQ
1.How can I place an order for MP2153GQFU-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2153GQFU-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-Z reliable?
The price and inventory of MP2153GQFU-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-Z is usually 5 days.
3.What payment methods are accepted for MP2153GQFU-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2153GQFU-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2153GQFU-Z?
MP2153GQFU-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2153GQFU-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-Z?
For technical support, including MP2153GQFU-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2153GQFU-Z requirements.
6.How does Aetrix verify that MP2153GQFU-Z is sourced from the original manufacturer or authorized distributors?
All MP2153GQFU-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-Z meets industry standards.
7.What is the process for return or replacement of MP2153GQFU-Z?
All MP2153GQFU-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2153GQFU-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-Z part is unused and in its original packaging.
Return procedure for MP2153GQFU-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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