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Monolithic Power Systems Inc. MP2141NGTF-Z
- Part No.:
- MP2141NGTF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-563, SOT-666
- Datasheet:
-
MP2141NGTF-Z.pdf
- Description:
- IC REG BUCK ADJ 1A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:3,901
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Product details
Overview
MP2141NGTF-Z from Monolithic Power Systems is a synchronous step-down DC/DC converter with 1A continuous output, 2.3V–5.5V input range, 0.6V adjustable output, 11µA quiescent current, and constant-on-time control-designed for battery-powered portable devices requiring ultra-low standby power and fast transient response.
For engineers reviewing the MP2141NGTF-Z datasheet, MP2141NGTF-Z pinout, MP2141NGTF-Z application, or MP2141NGTF-Z equivalent, this device supports precise voltage regulation in space-constrained I/O rails, wireless modules, and low-power microcontroller subsystems where efficiency at light load and thermal robustness are critical selection criteria.
Technical Context
The MP2141NGTF-Z employs constant-on-time (COT) control with input-voltage feed-forward to maintain stable 2.2MHz switching across its full 2.3V–5.5V input range and 0.6V–5.5V output range. Its internal 120mΩ P-channel and 80mΩ N-channel MOSFETs enable high-efficiency synchronous rectification without external diodes.
Sleep mode and advanced asynchronous modulation (AAM) reduce quiescent current to 11µA while maintaining regulation under light loads; cycle-by-cycle current limiting (2.4A peak), hiccup-mode short-circuit protection, and thermal shutdown (160°C) ensure system-level reliability in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1A continuous-supports single-core microcontrollers, RF transceivers, and sensor nodes without external current boosting. |
| Quiescent Current | 11µA-enables >1-year battery life in always-on IoT sensors powered by coin cells or Li-ion with low-load duty cycles. |
| Switching Frequency | 2.2MHz typical-permits use of sub-2mm-height 1µH shielded inductors and reduces EMI filtering footprint. |
| Input Voltage Range | 2.3V to 5.5V-directly compatible with single-cell Li-ion (2.7–4.2V), USB VBUS (4.75–5.25V), and 3.3V/5V rail inputs. |
| Feedback Reference | 600mV ±6mV-enables accurate 0.6V–5.5V output setting via standard 1% resistors; supports 1.2V, 1.8V, 2.5V, and 3.3V logic rails. |
| Internal MOSFET RDS(on) | P-FET: 120mΩ / N-FET: 80mΩ-minimizes conduction loss at 1A, enabling >90% efficiency at 3.3VIN/1.2VOUT. |
| Soft-Start Time | 0.5ms-prevents inrush current and output overshoot during cold start in battery-fed systems. |
Pinout & Package
SOT563 package: 1.6mm × 1.6mm × 0.55mm body, 6-pin ultra-small outline transistor (UOT), thermally enhanced with exposed pad (not electrically connected); suitable for high-density PCBs with ≤0.5mm pitch routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | FB (Feedback) | Resistor-divider node for output voltage regulation; connects to top of R1–R2 divider-sets VOUT = 0.6V × (1 + R1/R2). |
| 2 | GND | Power ground reference for all internal circuits and external decoupling; must be low-impedance plane connection. |
| 3 | VIN | Main input supply (2.3–5.5V); requires local 10µF ceramic capacitor between VIN and GND to suppress switching noise. |
| 4 | SW | Switching node connecting internal high-side P-FET drain to external inductor; carries high di/dt-must be short, wide, and isolated from sensitive analog traces. |
| 5 | EN | Enable control: logic-high (>1.2V) enables operation; floating or <0.4V disables IC and activates internal output discharge path. |
| 6 | OUT | Regulated output power rail and current-sense point; connects directly to load and output capacitor (C2); provides feedback for internal current limiting. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ sleep mode | 11µA quiescent current enables multi-year operation on CR2032 batteries in always-listening sensor nodes. |
| Integrated power MOSFETs | 120mΩ P-FET + 80mΩ N-FET eliminates external switches and reduces BOM count by 4 components vs. controller-based solutions. |
| Output discharge function | Internal 1kΩ discharge path activates automatically when EN = LOW-ensures safe VOUT ramp-down for hot-swap or sequencing compliance. |
| Hiccup-mode SCP | Short-circuit protection limits fault energy by cycling soft-start after thermal/current trip-prevents thermal runaway in unattended systems. |
| Stable with ceramic capacitors | Designed for low-ESR ceramic output caps (no electrolytic/tantalum required)-reduces size, improves lifetime, and avoids ESR drift issues. |
Applications
| Wireless Networking Card Power | Portable Medical Sensor Rail |
|---|---|
|
Use Scenario: Powering 2.4GHz Wi-Fi/BLE module (e.g., ESP32-WROOM) on mini-PCIe or M.2 form factor cards with tight thermal envelope. IC Role / Device Role / Timing Role: Primary 3.3V/1A buck regulator delivering clean, low-noise supply synchronized to host wake-up events. Use Value: 2.2MHz switching avoids interference with 2.4GHz band; 11µA IQ extends card standby time between beacon intervals without compromising RF performance. |
Use Scenario: Supplying ADC, low-power MCU, and optical sensor in wearable pulse oximeter with CR2032 primary cell. IC Role / Device Role / Timing Role: Main 1.8V/1A regulated rail enabling precision analog front-end operation during intermittent measurement bursts. Use Value: 0.6V reference allows exact 1.8V setting via 1% resistors; 1A capability supports brief LED drive pulses without brownout. |
| Industrial Handheld Scanner | Low-Voltage FPGA I/O Bank |
|
Use Scenario: Powering CMOS image sensor and laser driver in battery-operated barcode scanner with aggressive duty cycling. IC Role / Device Role / Timing Role: High-efficiency 1.2V/1A rail supporting burst-mode imaging and active laser emission phases. Use Value: COT control delivers <10µs load transient recovery-maintains stable sensor bias during rapid frame capture sequences. |
Use Scenario: Generating configurable 1.2V/1.5V/1.8V I/O supply for Xilinx Artix-7 or Intel MAX 10 FPGA banks in edge gateway designs. IC Role / Device Role / Timing Role: Programmable auxiliary rail providing flexible, low-noise power to multiple I/O standards simultaneously. Use Value: Adjustable output via resistor divider enables one BOM variant to support multiple FPGA configurations; SOT563 footprint saves board area near FPGA ball grid. |
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 |
|---|---|---|---|
| TPS62840DLCR | Lower IQ (300nA), but only 0.6A output; 1.8V–5.5V input; fixed 1.8V option only; no adjustable version. | Better for ultra-long-life coin-cell applications below 0.6A; unsuitable for 1A loads or variable VOUT. | Select if battery life >5 years is mandatory and load current ≤0.6A; avoid if adjustable output or 1A capability required. |
| RT7297BZSP | 1.2A output, 2.5V–5.5V input, 17µA IQ, 2MHz switching; requires external MOSFETs; larger QFN-10 package. | Higher current headroom but increases BOM count, layout complexity, and footprint; lacks integrated discharge. | Choose only if >1A peak current or higher thermal margin is needed; otherwise, MP2141NGTF-Z offers superior integration and size efficiency. |
Compared with TPS62840DLCR and RT7297BZSP, the MP2141NGTF-Z uniquely balances 1A output, 11µA IQ, adjustable VOUT, and SOT563 size-making it optimal for space- and power-constrained 1A applications where flexibility and minimal component count are design priorities.
Availability
MP2141NGTF-Z is available at Aetrix Electronics and suitable for portable medical devices, wireless edge nodes, industrial handheld scanners, and low-voltage FPGA I/O rails requiring stable component supply across extended production lifecycles.
Supply support for MP2141NGTF-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 over two decades of leadership in DC/DC conversion, motor drivers, and LED lighting controllers.
The MP2141N product line targets ultra-low-power, space-constrained battery-operated systems-designed to deliver high efficiency at light loads while minimizing external component count and PCB footprint.
FAQ
What is the minimum recommended output capacitor value for stable operation?
The MP2141NGTF-Z is stable with ≥10µF ceramic output capacitance. Using X5R/X7R dielectric types with ≤10mΩ ESR ensures loop stability across temperature and load; smaller values may cause output ripple exceeding 2% or transient undershoot above 50mV.
Does MP2141NGTF-Z support 100% duty cycle operation?
Yes-the device supports 100% duty cycle to maintain regulation when input voltage approaches output voltage (e.g., 3.3VIN/3.0VOUT), eliminating dropout risk in brownout conditions and extending usable battery voltage range.
How does the output discharge function operate during shutdown?
When EN is pulled low, an internal 1kΩ NMOS switch connects OUT to GND, discharging the output capacitor within ~10ms for a 10µF cap. This prevents back-powering of upstream circuitry and meets sequencing requirements in multi-rail systems.
Can MP2141NGTF-Z be used with input voltages below 2.3V?
No-operation below 2.3V violates the absolute minimum input rating. The UVLO threshold is 2.0V (rising), with 150mV hysteresis; sustained operation below 2.3V risks erratic regulation, startup failure, or undefined behavior per datasheet specifications.
Is thermal derating required for continuous 1A operation in SOT563?
Yes-at ambient temperatures above 60°C, output current must be reduced per θJA = 130°C/W. For example, at TA = 85°C, max continuous current drops to ~0.75A to keep junction temperature ≤125°C; forced airflow or copper pour improves thermal margin.
What is the purpose of the FB pin's dual role in MP2141NGTF versus fixed-output variants?
In MP2141NGTF, FB is strictly a feedback input for resistor-divider-based VOUT programming. Fixed versions (e.g., MP2141NGTF-18) replace FB with PG (power good), an open-drain output indicating regulation status-requiring external pull-up and disabling adjustability.
Does the 2.2MHz switching frequency remain constant across all input/output combinations?
Yes-constant-on-time control with input-voltage feed-forward maintains switching frequency within ±25% across 2.3V–5.5V input and 0.6V–5.5V output ranges, unlike traditional PWM controllers whose frequency varies significantly with duty cycle.
MP2141NGTF-Z 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- 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-Z FAQ
1.How can I place an order for MP2141NGTF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2141NGTF-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 MP2141NGTF-Z reliable?
The price and inventory of MP2141NGTF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2141NGTF-Z is usually 5 days.
3.What payment methods are accepted for MP2141NGTF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2141NGTF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2141NGTF-Z?
MP2141NGTF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2141NGTF-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 MP2141NGTF-Z?
For technical support, including MP2141NGTF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2141NGTF-Z requirements.
6.How does Aetrix verify that MP2141NGTF-Z is sourced from the original manufacturer or authorized distributors?
All MP2141NGTF-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 MP2141NGTF-Z meets industry standards.
7.What is the process for return or replacement of MP2141NGTF-Z?
All MP2141NGTF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2141NGTF-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 MP2141NGTF-Z part is unused and in its original packaging.
Return procedure for MP2141NGTF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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