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Monolithic Power Systems Inc. MP2152GQFU-18-Z
- Part No.:
- MP2152GQFU-18-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 6-UFDFN
- Datasheet:
-
MP2152GQFU-18-Z.pdf
- Description:
- IC REG BUCK 1.8V 2A 6UTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,025
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Product details
Overview
MP2152GQFU-18-Z from Monolithic Power Systems is a fixed-output 1.8V, 2A synchronous step-down DC/DC converter in a 1.2mm×1.6mm UTQFN package, featuring 25μA quiescent current, 1.1MHz switching frequency, and integrated 75mΩ/45mΩ power MOSFETs. It delivers stable low-voltage power for battery-powered microcontrollers and I/O rails in portable instrumentation and wireless modules.
For engineers reviewing the MP2152GQFU-18-Z datasheet, MP2152GQFU-18-Z pinout, MP2152GQFU-18-Z application, or MP2152GQFU-18-Z equivalent, key selection criteria include its 1.8V ±1% output accuracy over -40°C to +125°C, output discharge capability during shutdown, EN-controlled power sequencing, VOUT OVP with 115% threshold, and thermal shutdown at 160°C.
Technical Context
The MP2152GQFU-18-Z employs constant-on-time (COT) control with input voltage feed-forward to maintain stable 1.1MHz switching across 2.5V–5.5V input range and 1.8V output. Its internal high-side P-FET (75mΩ) and low-side N-FET (45mΩ) enable up to 2A continuous output with 100% duty-cycle capability for low-dropout operation.
Fault management includes cycle-by-cycle current limiting (2.8A peak), hiccup-mode short-circuit protection, dynamic VOUT over-voltage regulation (115% trigger, 105% release), and absolute VIN OVP at 6.1V. The device enters sleep mode under light load to sustain 25μA IQ while maintaining regulation via FB voltage clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1% (1782–1818mV at 25°C); ensures precise rail alignment for 1.8V logic and memory interfaces. |
| Max Output Current | 2A continuous; supports high-current peripherals like Wi-Fi SoCs and multi-core MCUs without external boost stages. |
| Quiescent Current | 25μA typical at 5V input; enables >1-year battery life in always-on sensor nodes with 200mAh coin cells. |
| Switching Frequency | 1.1MHz nominal; allows use of compact 1µH shielded inductors and <22µF ceramic output capacitors. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and dual-cell alkaline (3.2–3.6V) sources. |
| Thermal Shutdown | 160°C junction temperature with 30°C hysteresis; prevents latch-up during sustained overload or poor PCB thermal design. |
| Feedback Accuracy | ±1% at 25°C, ±1.5% over full temperature range; guarantees reliable ADC reference and analog circuit biasing. |
Pinout & Package
MP2152GQFU-18-Z uses a 6-pin UTQFN package (1.2mm × 1.6mm, 0.4mm pitch) with wettable flanks for automated optical inspection. Thermal pad on underside improves θJA to 65°C/W (EV2152-QFU-00A board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for high-frequency switch current; must connect directly to thermal pad and low-impedance ground plane. |
| 2 SW | Switch node | Drain of internal high-side P-MOSFET; connects to inductor; requires tight layout to minimize EMI and voltage spikes. |
| 3 VIN | Input supply | Accepts 2.5–5.5V; requires ≥4.7µF X5R/X7R ceramic capacitor placed within 2mm of pin for transient suppression. |
| 4 EN | Enable control | Active-high logic input (1.2V threshold); internal 1MΩ pulldown enables default disable; supports power sequencing with MCU GPIO. |
| 5 PG | Power good indicator | Open-drain output; sinks ≤400Ω when VFB outside ±10%/+15% window; requires external 100–500kΩ pull-up to VIN or VOUT. |
| 6 OUT | Output power rail | Regulated 1.8V supply; connects to load and output capacitor; senses output voltage for feedback loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Output discharge | Internal MOSFET actively discharges VOUT to GND when EN = low, preventing back-powering of upstream circuits. |
| VOUT over-voltage protection | Dynamically regulates output by forcing low-side conduction when FB exceeds 115% target, limiting overshoot during load dump or startup faults. |
| Constant-on-time control | Eliminates external compensation network; achieves <10µs load transient recovery with 1µH inductor and 22µF output cap. |
| 100% duty cycle operation | Enables dropout as low as 150mV at 2A (VIN ≥ 1.95V), supporting brownout tolerance in aging battery applications. |
| Short-circuit hiccup mode | Disables switching, discharges soft-start capacitor, then retries after ~1ms; limits average power dissipation to <100mW during sustained fault. |
Applications
| Wireless Sensor Node Power | Low-Power MCU Core Rail |
|---|---|
Use Scenario: Battery-powered BLE 5.0 sensor hub with 3-axis accelerometer, humidity sensor, and flash memory. IC Role / Device Role / Timing Role: Primary 1.8V system regulator delivering clean, low-noise power to RF transceiver and digital baseband. Use Value: 25μA IQ extends CR2032 battery life to 2.1 years in sleep mode; 1.1MHz switching avoids interference with 2.4GHz ISM band. | Use Scenario: ARM Cortex-M33 microcontroller operating at 80MHz with embedded SRAM and ADC peripherals. IC Role / Device Role / Timing Role: Core voltage regulator supplying VDD_CORE at 1.8V with fast transient response to CPU burst loads. Use Value: COT control reduces output voltage deviation to <15mV during 0→2A 1A/µs load steps, ensuring deterministic timing margins. |
| Portable Medical Instrument I/O | Industrial IoT Edge Node |
Use Scenario: Handheld pulse oximeter with OLED display, optical sensor array, and USB-C charging interface. IC Role / Device Role / Timing Role: I/O rail regulator powering display driver ICs and analog front-end multiplexers. Use Value: Output discharge prevents ghost power to display controller during shutdown, eliminating visual artifacts on power cycle. | Use Scenario: LoRaWAN gateway node with dual-band RF transceiver, secure element, and RS-485 interface. IC Role / Device Role / Timing Role: Secondary 1.8V supply for isolated communication PHY and cryptographic co-processor. Use Value: VOUT OVP and thermal shutdown ensure safe operation during ambient temperatures up to +85°C in unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS6286518RRLR | 1.8V fixed, 3A output, 1.8MHz fs, 15μA IQ, 1.06mm×1.46mm DSBGA | Higher current and frequency; smaller package but no output discharge | Select for space-constrained designs needing >2A or faster transient response; verify thermal performance without discharge path. |
| Analog Devices ADP5062ACBZ-1.8-R7 | 1.8V fixed, 2A, 2.5MHz fs, 28μA IQ, 1.2mm×1.6mm LFCSP | Higher switching frequency enables smaller magnetics; lacks VOUT OVP and hiccup-mode SCP | Prefer for ultra-low-profile layouts where 2.5MHz permits 470nH inductors; confirm system-level OVP coverage if missing. |
Compared with TPS6286518RRLR and ADP5062ACBZ-1.8-R7, MP2152GQFU-18-Z uniquely combines output discharge, VOUT OVP with dynamic regulation, and 25μA IQ in a thermally robust UTQFN-making it optimal for battery-backed systems requiring fail-safe shutdown and robust fault containment.
Availability
MP2152GQFU-18-Z is available at Aetrix Electronics and suitable for portable instrumentation, wireless sensor networks, and industrial edge nodes requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MP2152GQFU-18-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 analog and power ICs, with core expertise in DC/DC conversion, LED drivers, and motor control.
The MP2152 product line targets ultra-low-power, space-constrained applications such as wearables, medical sensors, and IoT endpoints-designed to maximize battery runtime while minimizing PCB area and thermal overhead.
FAQ
What is the recommended input capacitor for MP2152GQFU-18-Z?
A minimum 4.7µF X5R or X7R ceramic capacitor rated ≥6.3V must be placed within 2mm of the VIN and GND pins. For high-reliability applications, add a 10µF bulk capacitor near the connector. Total effective capacitance should exceed 10µF to suppress ripple from USB or battery sources during 2A load steps.
Does MP2152GQFU-18-Z require an external feedback resistor divider?
No. MP2152GQFU-18-Z is a fixed-output variant with internal resistor network set to 1.8V; the FB pin is not connected externally. Only adjustable versions (e.g., MP2152GQFU) require external R1/R2. Using FB on this part may cause regulation failure or damage.
How does the output discharge function operate during shutdown?
When EN is pulled low, the internal discharge MOSFET turns on between OUT and GND, providing a 200Ω path. This discharges a 22µF output capacitor from 1.8V to <100mV in ~12ms, preventing back-powering of upstream regulators or leakage into powered-off circuit blocks.
Can MP2152GQFU-18-Z operate with a 2.4V input supply?
No. The absolute minimum input voltage is 2.5V per datasheet specifications. At 2.4V, UVLO (2.45V rising threshold) prevents startup. For sub-2.5V operation, consider MP2153 (1.8V–5.5V input) or redesign with a pre-regulator stage.
What is the maximum allowable PCB copper area for the thermal pad?
The UTQFN thermal pad (0.5mm × 0.9mm) must be soldered to a solid copper pour of ≥25mm² connected to ≥2 internal ground planes via ≥4 thermal vias (0.3mm diameter, 0.6mm spacing). Exceeding 50mm² provides diminishing returns and risks solder voiding during reflow.
Is the PG pin functional on MP2152GQFU-18-Z?
Yes. As a fixed-output version, MP2152GQFU-18-Z includes the PG open-drain output. It asserts high (via external pull-up) when VFB is within -10% to +15% of 1.8V (i.e., 1.62V–2.07V), and pulls low during undervoltage, overvoltage, or thermal shutdown events.
What inductor value is optimal for 1.8V/2A operation?
A 1.0µH metal-alloy shielded inductor with ≤50mΩ DCR is optimal. Example: Würth 74437324010 (1.0µH, 35mΩ). This balances efficiency (>88% at 1A), size (<2.5mm² footprint), and transient response-avoiding saturation at 2.8A peak current.
MP2152GQFU-18-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):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- 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)
MP2152GQFU-18-Z FAQ
1.How can I place an order for MP2152GQFU-18-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2152GQFU-18-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 MP2152GQFU-18-Z reliable?
The price and inventory of MP2152GQFU-18-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2152GQFU-18-Z is usually 5 days.
3.What payment methods are accepted for MP2152GQFU-18-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2152GQFU-18-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2152GQFU-18-Z?
MP2152GQFU-18-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2152GQFU-18-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 MP2152GQFU-18-Z?
For technical support, including MP2152GQFU-18-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2152GQFU-18-Z requirements.
6.How does Aetrix verify that MP2152GQFU-18-Z is sourced from the original manufacturer or authorized distributors?
All MP2152GQFU-18-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 MP2152GQFU-18-Z meets industry standards.
7.What is the process for return or replacement of MP2152GQFU-18-Z?
All MP2152GQFU-18-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2152GQFU-18-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 MP2152GQFU-18-Z part is unused and in its original packaging.
Return procedure for MP2152GQFU-18-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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