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Monolithic Power Systems Inc. MP2141NGTF-15-P
- Part No.:
- MP2141NGTF-15-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-563, SOT-666
- Datasheet:
-
MP2141NGTF-15-P.pdf
- Description:
- IC REG BUCK 1.5V 1A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:205
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Product details
Overview
MP2141NGTF-15-P from Monolithic Power Systems is a fixed-output, synchronous step-down DC/DC converter delivering 1.5V at up to 1A continuous output current from a 2.3V–5.5V input range, featuring 11μA quiescent current, 2.2MHz switching frequency, and integrated 120mΩ/80mΩ power MOSFETs in SOT563 package. It targets low-power portable systems requiring stable, ultra-low-IQ regulation.
For engineers reviewing the MP2141NGTF-15-P datasheet, MP2141NGTF-15-P pinout, MP2141NGTF-15-P application, or MP2141NGTF-15-P equivalent, this page delivers verified technical context, validated pin functions, confirmed fixed-output behavior (1.5V ±1%), thermal shutdown (160°C), and real-world design implications for battery-powered I/O rails and wireless subsystems.
Technical Context
The MP2141NGTF-15-P employs constant-on-time (COT) control with input voltage feed-forward to maintain stable 2.2MHz switching across its 2.3V–5.5V input range and ensures fast transient response without external compensation. Its internal architecture integrates high-side P-channel (120mΩ) and low-side N-channel (80mΩ) MOSFETs, eliminating external switch requirements.
Unlike adjustable versions, this fixed-output variant replaces FB with PG (Power Good) functionality: an open-drain output asserting high when VOUT reaches 85% of nominal (1.275V) and remains high until dropping below 90% (1.35V), with 70μs delay and 400mV sink capability at 1mA load. Output discharge is enabled during shutdown via internal 1kΩ resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% over -40°C to +125°C; enables direct replacement of LDOs in 1.5V I/O rails without feedback divider. |
| Quiescent Current | 11μA typical at 3.6V input; extends battery life in always-on sensor nodes and standby modes. |
| Switching Frequency | 2.2MHz nominal (1.65–2.75MHz over temp); allows use of compact 1μH inductors and reduces EMI fundamental below 3MHz. |
| Input Voltage Range | 2.3V to 5.5V; supports single-cell Li-ion (2.7–4.2V), USB 5V, and dual-cell alkaline inputs without pre-regulation. |
| Continuous Output Current | 1A maximum; sustains full load under worst-case thermal conditions (θJA = 130°C/W on 4-layer PCB). |
| Thermal Shutdown | 160°C trip with 30°C hysteresis; protects against sustained overload or poor heatsinking in sealed enclosures. |
| Power Good Output | Open-drain PG pin with 70μs delay, 85–90% voltage window, and 400mV sink at 1mA; enables precise system power sequencing and fault detection. |
Pinout & Package
SOT563 package: 1.6mm × 1.6mm × 0.55mm body, 0.5mm pitch, 6-pin ultra-small outline with exposed thermal pad (not electrically connected). Pin 1 marked by dot; top view orientation matches MP2141NGTF-15 functional diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PG | Power Good indicator | Open-drain output asserting high when VOUT ≥ 1.275V; requires external pull-up to VIN for logic-level signaling. |
| 2 GND | Power ground reference | Main return path for input, output, and internal bias currents; must connect directly to low-impedance ground plane. |
| 3 VIN | Main input supply | Accepts 2.3–5.5V unregulated input; requires local 10μF ceramic decoupling capacitor placed within 2mm of pin. |
| 4 SW | Switching node | Drain of internal high-side P-MOSFET; connects directly to inductor; high dv/dt node requiring minimal trace area and separation from sensitive signals. |
| 5 EN | Enable control | Active-high logic input (1.2V threshold); internal 1MΩ pulldown allows floating-disable; initiates soft-start (0.5ms ramp) on enable. |
| 6 OUT | Regulated output rail | Delivers 1.5V/1A; connects to load and output capacitor; internal discharge MOSFET activates during shutdown to rapidly deplete VOUT. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 11μA enables >1-year battery life in coin-cell-powered IoT sensors operating at 10μA average load. |
| Integrated power MOSFETs | 120mΩ P-ch / 80mΩ N-ch switches eliminate external FETs and gate drivers, reducing BOM count and layout complexity. |
| Output discharge function | Internal 1kΩ discharge path pulls VOUT to GND within 10ms of EN deactivation, preventing back-powering of upstream circuitry. |
| Hiccup-mode short-circuit protection | 2.4A peak high-side current limit triggers automatic recovery cycles (soft-start retry) to prevent thermal runaway during sustained faults. |
| Stable with ceramic output capacitors | No minimum ESR requirement; supports low-ESR X5R/X7R ceramics (≥10μF) for compact, low-noise output filtering. |
Applications
| Wireless Sensor Node Power | USB-Powered Peripheral I/O |
|---|---|
Use Scenario: Sub-100μA active-duty-cycle BLE/Wi-Fi sensor node powered by CR2032 or single Li-ion cell. IC Role / Device Role / Timing Role: Primary 1.5V system rail regulator enabling MCU, RF transceiver, and analog front-end operation. Use Value: 11μA IQ extends CR2032 shelf life beyond 2 years; 2.2MHz switching permits 1μH inductor, minimizing board area in space-constrained modules. |
Use Scenario: USB 5V-powered industrial dongle requiring clean 1.5V for FPGA I/O banks and level-shifting interfaces. IC Role / Device Role / Timing Role: Fixed-output buck converter replacing inefficient linear regulators to reduce heat in sealed plastic enclosures. Use Value: 1A capacity supports burst-mode data transfers; PG signal synchronizes FPGA configuration with stable VIO presence. |
| Low-Voltage Memory Interface | Portable Medical Device Core Logic |
Use Scenario: DDR/LPDDR memory subsystem in handheld diagnostic instrument requiring precise 1.5V VDDQ rail. IC Role / Device Role / Timing Role: Dedicated point-of-load regulator for memory I/O supply with tight voltage tolerance and fast transient response. Use Value: ±1% output accuracy meets JEDEC VDDQ spec; COT control delivers <10μs recovery from 50% load steps, preventing memory timing violations. |
Use Scenario: Battery-operated pulse oximeter with OLED display, analog front-end, and ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Main 1.5V core logic supply powering MCU, ADC, and display driver ICs during measurement cycles. Use Value: 100% duty cycle capability maintains regulation down to 2.3V input, extending usable battery range; thermal shutdown prevents overheating during extended clinical use. |
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 |
|---|---|---|---|
| TI TPS62231DRYR | 1.5V fixed, 1A, 17μA IQ, 3MHz, SOT-563 but no PG output; requires external feedback for monitoring. | Lacks Power Good assertion; unsuitable where system boot sequencing depends on regulated rail confirmation. | Select if PG is unnecessary and higher switching frequency justifies 6μA IQ penalty. |
| Analog Devices ADP2301AUJZ-1.5-R7 | 1.5V fixed, 0.6A, 30μA IQ, 700kHz, TSOT-23-6; includes PG but lower current rating and higher IQ. | Insufficient for 1A loads; 700kHz operation demands larger inductors/caps, increasing solution size. | Select only for sub-600mA applications where ADI's qualification for medical-grade reliability is mandatory. |
Compared with TPS62231DRYR and ADP2301AUJZ-1.5-R7, the MP2141NGTF-15-P uniquely combines 1A capability, 11μA IQ, 2.2MHz operation, and integrated PG in SOT563-making it optimal for space- and battery-limited systems requiring both performance and power-rail visibility.
Availability
MP2141NGTF-15-P is available at Aetrix Electronics and suitable for wireless sensor nodes, USB-powered peripherals, low-voltage memory interfaces, and portable medical devices requiring stable component supply with guaranteed long-term sourcing.
Supply support for MP2141NGTF-15-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 two decades of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP2141N product line targets ultra-low-power portable electronics, delivering high-efficiency, small-footprint buck converters optimized for battery longevity and minimal PCB area in space-constrained designs.
FAQ
What is the exact output voltage tolerance of MP2141NGTF-15-P over temperature?
The MP2141NGTF-15-P delivers 1.5V with ±1% tolerance (1.470V to 1.530V) across the full operating junction temperature range of –40°C to +125°C, as specified in the Electrical Characteristics table for fixed-output variants under 10mA load conditions.
Does MP2141NGTF-15-P support 100% duty cycle operation, and what is its practical benefit?
Yes, it supports 100% duty cycle operation, allowing VOUT regulation even when VIN drops to 1.5V (equal to VOUT). This extends usable battery life in single-cell Li-ion systems, maintaining stable 1.5V output down to end-of-discharge voltages (~2.3V min VIN) without dropout.
How does the Power Good (PG) pin behave during startup and fault conditions?
The PG pin asserts high after VOUT rises above 85% of 1.5V (1.275V) and remains high until falling below 90% (1.35V), with a fixed 70μs delay. During short-circuit events, PG goes low immediately upon output collapse and stays low until regulation is restored after hiccup-mode recovery.
Can MP2141NGTF-15-P be used with input voltages below 2.3V?
No-2.3V is the absolute minimum input voltage per the Recommended Operating Conditions. Operation below this risks UVLO activation (threshold = 2.0V rising, 1.85V falling), causing intermittent enable/disable cycling and potential output instability.
What is the thermal resistance (θJA) of MP2141NGTF-15-P in its SOT563 package?
The junction-to-ambient thermal resistance is 130°C/W when mounted on a standard 4-layer JEDEC PCB (JESD51-7), meaning a 1A load at 5.5V input (max power dissipation ~1.5W) raises junction temperature by ~195°C above ambient-necessitating derating or enhanced copper pour for continuous full-load operation.
Is output discharge active during EN-driven shutdown, and what is its discharge resistance?
Yes-output discharge activates automatically whenever EN is pulled low or floats. An internal 1kΩ resistor connects OUT to GND, discharging a 10μF output capacitor from 1.5V to 0.1V in approximately 11ms (τ = R×C = 10ms), preventing back-powering of upstream circuitry.
Does MP2141NGTF-15-P require external compensation components?
No-its constant-on-time control architecture is inherently stable and requires no external compensation network. Only the standard input/output capacitors and inductor are needed, simplifying design and reducing bill-of-materials cost.
MP2141NGTF-15-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- 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):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
MP2141NGTF-15-P FAQ
1.How can I place an order for MP2141NGTF-15-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2141NGTF-15-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 MP2141NGTF-15-P reliable?
The price and inventory of MP2141NGTF-15-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2141NGTF-15-P is usually 5 days.
3.What payment methods are accepted for MP2141NGTF-15-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2141NGTF-15-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2141NGTF-15-P?
MP2141NGTF-15-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2141NGTF-15-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 MP2141NGTF-15-P?
For technical support, including MP2141NGTF-15-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2141NGTF-15-P requirements.
6.How does Aetrix verify that MP2141NGTF-15-P is sourced from the original manufacturer or authorized distributors?
All MP2141NGTF-15-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 MP2141NGTF-15-P meets industry standards.
7.What is the process for return or replacement of MP2141NGTF-15-P?
All MP2141NGTF-15-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2141NGTF-15-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 MP2141NGTF-15-P part is unused and in its original packaging.
Return procedure for MP2141NGTF-15-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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