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Monolithic Power Systems Inc. MP2153DGTF-Z
- Part No.:
- MP2153DGTF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-563, SOT-666
- Datasheet:
-
MP2153DGTF-Z.pdf
- Description:
- IC REG BUCK ADJ 3A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:4,933
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Product details
Overview
MP2153DGTF-Z from Monolithic Power Systems is a synchronous step-down DC/DC converter IC with integrated 65mΩ high-side and 35mΩ low-side MOSFETs, delivering up to 3A continuous output current across a 2.5V–5.5V input range while regulating output down to 0.6V. It employs constant-on-time (COT) control for fast transient response and features fast output discharge, 1% FB accuracy, and 25μA quiescent current - optimized for SSD power rails and portable battery-powered systems.
For engineers reviewing the MP2153DGTF-Z datasheet, MP2153DGTF-Z pinout, MP2153DGTF-Z application, or MP2153DGTF-Z equivalent, key selection considerations include its SOT563 package footprint, 1.1MHz switching frequency, EN-controlled power sequencing, thermal shutdown at 160°C, and compatibility with standard 1μH shielded inductors and 22μF ceramic output capacitors.
Technical Context
The MP2153DGTF-Z uses constant-on-time (COT) control with VIN feed-forward to maintain stable 1.1MHz switching frequency across input voltages from 2.5V to 5.5V and output voltages as low as 0.6V. Its internal power stage integrates complementary P-channel HS-FET (65mΩ) and N-channel LS-FET (35mΩ), enabling high-efficiency synchronous rectification without external drivers.
It implements advanced light-load management via sleep mode and advanced asynchronous modulation (AAM), reducing quiescent current to 25μA while maintaining regulation. Protection logic includes cycle-by-cycle OCP (6A peak), hiccup-mode SCP, output OVP (115% of VFB), and thermal shutdown with 30°C hysteresis - all verified over –40°C to +125°C junction temperature.
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 | 3A continuous - sustains full load at 1.2V output with <30°C case rise on 2-layer PCB per EVL2153D-TF-00A. |
| Switching Frequency | 1.1MHz - enables compact 1μH inductor and 22μF ceramic capacitor designs; fixed fSW minimizes EMI filtering complexity. |
| Feedback Accuracy | ±1% - ensures tight output regulation (e.g., ±12mV at 1.2V), critical for core voltage stability in SSD controllers. |
| Quiescent Current | 25μA - extends battery runtime in standby mode for portable instruments and always-on peripherals. |
| Output Discharge | 13Ω internal resistor - actively discharges VOUT within milliseconds after EN deactivation, preventing back-powering. |
| Thermal Shutdown | 160°C with 30°C hysteresis - protects die during sustained overload or poor heatsinking; recovers autonomously after cooldown. |
Pinout & Package
SOT563 (1.6mm × 1.6mm, 0.5mm pitch) package with exposed pad for thermal enhancement. Pin 1 = GND, Pin 2 = SW, Pin 3 = VIN, Pin 4 = EN, Pin 5 = FB, Pin 6 = OUT. All pins are surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for HS-FET, LS-FET, and control circuitry; must connect to low-impedance ground plane. |
| 2 SW | Switching node | Drain of internal P-channel HS-FET; connects directly to inductor; requires short, low-inductance trace to minimize ringing. |
| 3 VIN | Input supply | Unregulated 2.5V–5.5V source; requires local 22μF X5R/X7R ceramic decoupling within 3mm of pin. |
| 4 EN | Enable control | Active-high logic input (1.2V threshold); internal 1MΩ pulldown enables default-off behavior for safe power-up sequencing. |
| 5 FB | Feedback sense | Resistor-divider tap point; regulates VOUT to 0.6V reference with ±1% accuracy; high-impedance (≤100nA bias). |
| 6 OUT | Output power rail | Voltage sense and power delivery terminal; connects to output capacitor and load; used for output discharge path activation. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-on-time (COT) control | Enables <10μs load transient recovery without external compensation components; eliminates loop-stability tuning. |
| Integrated MOSFETs | 65mΩ HS-FET + 35mΩ LS-FET - achieves >90% efficiency at 3A/1.2V (VIN=5V), eliminating gate driver design effort. |
| Fast output discharge | 13Ω internal NMOS - discharges 22μF output cap from 1.2V to <100mV in <5ms, preventing backfeed into powered-down subsystems. |
| Light-load AAM mode | Reduces switching frequency and gate drive losses below 300mA load, maintaining >85% efficiency at 10mA output. |
| Hiccup-mode short-circuit protection | Disables switching, discharges soft-start cap, then retries - limits average power dissipation during sustained fault to <0.5W. |
Applications
| Solid-State Drive (SSD) Power Rail | Portable Instrument Core Supply |
|---|---|
Use Scenario: Regulating 5V USB input to 1.2V/3A for NAND flash controller and DRAM buffer in M.2 NVMe SSDs. IC Role / Device Role / Timing Role: Primary buck regulator providing tightly regulated core voltage with fast transient response to burst read/write loads. Use Value: 1.1MHz operation avoids audible noise; 25μA IQ extends sleep-mode battery life; fast discharge prevents data corruption during hot-plug removal. |
Use Scenario: Converting single-cell Li-ion (3.0–4.2V) to 1.8V/2A for microcontroller, ADC, and sensor interface in handheld test equipment. IC Role / Device Role / Timing Role: Main system PMIC delivering stable low-noise supply with EN-controlled sequencing alongside LDOs. Use Value: COT control maintains regulation during rapid sensor sampling bursts; SOT563 footprint saves board space in compact enclosures. |
| Battery-Powered Wireless Sensor Node | Multi-Function Printer Logic Supply |
Use Scenario: Stepping down 3.6V nominal Li-SOCl₂ primary cell to 3.3V/1A for BLE SoC and environmental sensors in industrial IoT nodes. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in AAM mode during 99% duty-cycle sleep intervals. Use Value: 25μA IQ enables >10-year battery life; 100% duty cycle capability supports ultra-low dropout when VIN approaches VOUT. |
Use Scenario: Generating 2.5V/3A from 5V system rail to power ASIC logic, FPGA configuration, and interface buffers in compact MFPs. IC Role / Device Role / Timing Role: Secondary buck stage replacing discrete solutions to reduce BOM count and thermal footprint. Use Value: Integrated MOSFETs eliminate external FETs and drivers; thermal shutdown prevents damage during paper jam-induced stall currents. |
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 |
|---|---|---|---|
| RT6253BGQW | Fixed 1.2V output (non-adjustable), 2.7V–5.5V input, 3A, 2.5μA IQ, QFN-10 package | Lacks FB pin and output adjustability; no fast discharge; smaller thermal pad but higher θJA (85°C/W) | Select only if fixed 1.2V output suffices and board layout accommodates larger QFN-10 footprint. |
| TPS6286413ARQYR | 2.7V–5.5V input, 3A, 1.8MHz fSW, 17μA IQ, 1.2mm × 1.6mm DSBGA-6 package | No integrated output discharge; requires external resistor network for discharge; lower profile but no exposed thermal pad | Prefer for ultra-thin designs where height <0.6mm is mandatory and external discharge is acceptable. |
Compared with RT6253BGQW and TPS6286413ARQYR, MP2153DGTF-Z uniquely combines adjustable output, fast internal discharge, SOT563 compactness with thermal pad, and COT control - making it optimal for space-constrained, battery-sensitive, and dynamically loaded applications like SSDs and portable instrumentation.
Availability
MP2153DGTF-Z is available at Aetrix Electronics and suitable for solid-state drives, portable instrumentation, and battery-powered wireless sensor nodes requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for MP2153DGTF-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 over two decades of innovation in DC/DC converters, LED drivers, and motor drivers.
The MP2153D product line delivers ultra-small, high-efficiency synchronous buck converters for space- and power-constrained applications including SSDs, wearables, and portable medical devices - emphasizing minimal external components and robust protection.
FAQ
What is the minimum output voltage supported by MP2153DGTF-Z?
The MP2153DGTF-Z regulates output down to 0.6V using an external resistor divider on the FB pin. This 0.6V internal reference enables precise generation of common core voltages such as 1.2V (via 200kΩ/200kΩ divider) and 1.8V (200kΩ/100kΩ), with ±1% feedback accuracy ensuring tight tolerance across temperature and load.
Does MP2153DGTF-Z require an external bootstrap capacitor?
No. The MP2153DGTF-Z uses a P-channel high-side MOSFET, eliminating the need for a bootstrap capacitor or floating gate driver. This simplifies layout, reduces component count, and improves reliability in high-density designs where boot capacitor placement is challenging.
How does the fast output discharge function operate?
When EN is pulled low or VIN drops below UVLO, the MP2153DGTF-Z activates an internal 13Ω NMOS between OUT and GND. This discharges a 22μF output capacitor from 1.2V to <100mV in under 5ms, preventing back-powering of upstream circuitry and ensuring safe hot-swap behavior in SSD and modular systems.
Can MP2153DGTF-Z operate with 100% duty cycle?
Yes. The MP2153DGTF-Z supports 100% duty cycle operation when VIN approaches VOUT, enabling dropout operation without forced discontinuous conduction. This is critical for maintaining regulation during brown-out conditions in battery-powered systems where input voltage sags near the output level.
What thermal performance can be expected in SOT563 package?
In the SOT563 package on a 2-layer PCB (EVL2153D-TF-00A), the MP2153DGTF-Z achieves θJA = 80°C/W and θJC = 50°C/W. At 3A/1.2V with VIN=5V, typical case temperature rise is <30°C - sufficient for fanless operation in sealed portable enclosures without additional heatsinking.
Is the EN pin internally pulled down?
Yes. An internal 1MΩ resistor connects EN to GND, ensuring the device remains off during power-up until a valid enable signal (>1.2V) is applied. This eliminates the need for an external pull-down resistor and guarantees safe default state in systems with uncontrolled EN routing.
Which inductor series is validated for use with MP2153DGTF-Z?
MPS's MPL-AL4020-1R0 (1μH, 10.1mΩ DCR) is the recommended and fully validated inductor. It delivers optimal efficiency and thermal performance across the 0.1A–3A load range and meets EMI requirements when used with the MP2153DGTF-Z's 1.1MHz switching frequency.
MP2153DGTF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- 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):
- 2.5V
- 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:
- SOT-563
MP2153DGTF-Z FAQ
1.How can I place an order for MP2153DGTF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2153DGTF-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 MP2153DGTF-Z reliable?
The price and inventory of MP2153DGTF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2153DGTF-Z is usually 5 days.
3.What payment methods are accepted for MP2153DGTF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2153DGTF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2153DGTF-Z?
MP2153DGTF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2153DGTF-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 MP2153DGTF-Z?
For technical support, including MP2153DGTF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2153DGTF-Z requirements.
6.How does Aetrix verify that MP2153DGTF-Z is sourced from the original manufacturer or authorized distributors?
All MP2153DGTF-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 MP2153DGTF-Z meets industry standards.
7.What is the process for return or replacement of MP2153DGTF-Z?
All MP2153DGTF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2153DGTF-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 MP2153DGTF-Z part is unused and in its original packaging.
Return procedure for MP2153DGTF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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