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Monolithic Power Systems Inc. MP2153GQFU-15-Z
- Part No.:
- MP2153GQFU-15-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 6-UFDFN
- Datasheet:
-
MP2153GQFU-15-Z.pdf
- Description:
- IC REG BUCK 1.5V 3A 6UTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,283
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Product details
Overview
MP2153GQFU-15-Z from Monolithic Power Systems is a fixed-output 1.5V, 3A synchronous step-down DC/DC converter in UTQFN-6 (1.2mm×1.6mm) package, featuring 25μA quiescent current, 1.1MHz switching frequency, and integrated 65mΩ/35mΩ MOSFETs. It operates from 2.5V–5.5V input, delivers ±1% output accuracy, and includes output discharge, OVP, and hiccup-mode short-circuit protection - optimized for SSD power rails and portable battery-powered systems.
For engineers reviewing the MP2153GQFU-15-Z datasheet, MP2153GQFU-15-Z pinout, MP2153GQFU-15-Z application, or MP2153GQFU-15-Z equivalent, key selection criteria include fixed 1.5V output tolerance (±1%), ultra-low IQ for battery longevity, EN-controlled sequencing, thermal shutdown at 160°C, and compatibility with 1μH inductors and 22μF ceramic output capacitors in space-constrained designs.
Technical Context
The MP2153GQFU-15-Z implements constant-on-time (COT) control with input-voltage feed-forward to maintain stable 1.1MHz switching across its 2.5V–5.5V input range. Its internal high-side P-channel (65mΩ) and low-side N-channel (35mΩ) MOSFETs enable up to 3A continuous output at 1.5V with minimal external components.
It integrates output discharge via an internal MOSFET (200Ω), VOUT over-voltage protection triggered at 115% of nominal (1.725V), and hiccup-mode short-circuit recovery. The fixed-output version replaces FB with PG - an open-drain power-good indicator with 150μs delay and 0.4V sink capability at 1mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% (1478–1522mV over –40°C to +125°C); eliminates external resistor divider and reduces BOM count. |
| Max Output Current | 3A continuous; supports high-current logic rails in SSDs and portable instruments without external current-sense circuitry. |
| Quiescent Current | 30–35μA (typ. 30μA at VIN=5V, no switching); enables >1-year battery life in always-on IoT sensors. |
| Switching Frequency | 1.1MHz (±10%); allows use of compact 1μH inductors and minimizes EMI filtering requirements. |
| Input Voltage Range | 2.5V to 5.5V; compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3.3V system rails. |
| Thermal Shutdown | 160°C with 30°C hysteresis; prevents latch-up during sustained overload and enables safe auto-recovery. |
| OVP Threshold | 115% of VOUT (1.725V) with 10% hysteresis; protects downstream 1.5V logic (e.g., LPDDR4 I/O, FPGA core) from overvoltage damage. |
Pinout & Package
MP2153GQFU-15-Z uses the UTQFN-6 (1.2mm × 1.6mm, 0.4mm pitch) package with wettable flanks, rated for 2W power dissipation at TA = +25°C (θJA = 65°C/W on EV2153-QFU-00A board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power ground reference | Primary return path for high-frequency switch node current; must be connected to solid thermal pad under package. |
| 2 SW | Switching node | Drain of internal high-side P-MOSFET; connects directly to inductor; requires low-inductance layout to minimize ringing. |
| 3 VIN | Input supply | Accepts 2.5–5.5V unregulated input; requires ≥10μF X5R/X7R ceramic decoupling placed within 2mm of pin. |
| 4 EN | Enable control | Active-high logic input (1.2V threshold); internal 1MΩ pulldown enables default-off behavior; supports power sequencing. |
| 5 PG | Power good indicator | Open-drain output; pulled low if VOUT deviates >10% below or >15% above 1.5V; requires external 100–500kΩ pull-up to VIN. |
| 6 OUT | Output voltage sense | Direct connection to output rail; senses VOUT for regulation and OVP; ties to output capacitor cathode for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Output Discharge | Internal 200Ω discharge FET activates automatically on EN deassertion, discharging VOUT to <100mV in <5ms - critical for safe hot-swap and multi-rail sequencing. |
| Constant-On-Time Control | Eliminates loop compensation components; achieves <10μs load transient response (0→1.5A) with <50mV undershoot - ideal for burst-mode processors. |
| VOUT Over-Voltage Protection | Dynamically forces low-side FET on when VFB exceeds 115% of 600mV reference, clamping VOUT before downstream 1.5V logic sustains damage. |
| Hiccup-Mode Short-Circuit Recovery | Enters 100ms off-cycle after current limit trip, then soft-starts; limits average power dissipation to <0.5W during fault - avoids thermal runaway on PCB. |
| 100% Duty Cycle Capability | Maintains regulation down to VIN – VDROP (≈2.5V); enables dropout operation during brown-out conditions without rail collapse. |
Applications
| SSD Core Power | Portable Medical Sensor |
|---|---|
Use Scenario: Powers NAND flash controller and DRAM cache in M.2 NVMe SSDs with tight thermal envelope and burst current demands. IC Role / Device Role / Timing Role: Primary 1.5V core regulator delivering up to 3A peak during read/write bursts; synchronized to host command timing via EN pin. Use Value: 25μA IQ extends SSD standby time; 1.1MHz switching enables small 1.2×1.6mm footprint matching PCIe slot height constraints. | Use Scenario: Supplies 1.5V to ultra-low-power ADCs and BLE SoCs in handheld glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Always-on bias rail with EN controlled by microcontroller wake signal; PG confirms stable 1.5V before sensor initialization. Use Value: Output discharge ensures rapid VOUT decay between measurements, eliminating leakage-induced offset drift in precision analog front-ends. |
| Industrial Handheld Terminal | Multi-Function Printer Logic Rail |
Use Scenario: Powers ARM Cortex-M7 MCU and display interface in ruggedized warehouse scanners operating on 3.7V Li-ion. IC Role / Device Role / Timing Role: Main system rail regulator; EN sequenced after battery gauge validation; PG signals MCU reset release. Use Value: 2.5–5.5V input range accommodates full Li-ion discharge curve (4.2V→3.0V); thermal shutdown prevents derating in sealed enclosures. | Use Scenario: Generates 1.5V for ASIC-based print engine controllers handling real-time raster data processing. IC Role / Device Role / Timing Role: High-current digital rail supporting 3A transient loads during page rendering; PG validates rail stability before DMA transfer start. Use Value: Integrated 65mΩ/35mΩ MOSFETs eliminate external FETs and gate drivers, reducing solution size by 35% vs. controller+external FET alternatives. |
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 |
|---|---|---|---|
| TPS6286515RQWR | 1.8V fixed output (not 1.5V); 4A rating; 1.8MHz switching; 12μA IQ | Requires redesign of feedback network or external LDO to achieve 1.5V; better for higher-current 1.8V logic rails | Select only if system requires >3A or lower IQ dominates over output voltage match. |
| RTQ2132BGQW | Adjustable output (0.6–5.5V); 3A; 25μA IQ; same UTQFN-6 package | Needs external R1/R2 divider; lacks PG pin; no output discharge | Choose when design flexibility (e.g., future 1.2V/1.8V variants) outweighs need for fixed 1.5V + PG + discharge. |
Compared with TPS6286515RQWR and RTQ2132BGQW, MP2153GQFU-15-Z uniquely combines factory-trimmed 1.5V ±1% accuracy, integrated output discharge, and PG indication in a 1.2×1.6mm footprint - making it optimal for cost-sensitive, space-constrained 1.5V applications where reliability and sequencing integrity are non-negotiable.
Availability
MP2153GQFU-15-Z is available at Aetrix Electronics and suitable for solid-state drives, portable medical instruments, and industrial handheld terminals requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MP2153GQFU-15-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 20 years of expertise in DC/DC conversion, motor drivers, and LED lighting solutions.
The MP2153 product line targets ultra-compact, low-IQ power conversion for battery-powered and thermally constrained applications - emphasizing integration, efficiency, and ease-of-use through COT architecture and minimal external component count.
FAQ
What is the recommended input capacitor for MP2153GQFU-15-Z?
A minimum 10μF X5R or X7R ceramic capacitor rated ≥6.3V must be placed within 2mm of the VIN and GND pins. A parallel 1μF high-frequency ceramic capacitor further reduces high-frequency ripple and improves transient response during load steps.
Does MP2153GQFU-15-Z require an external feedback resistor divider?
No. MP2153GQFU-15-Z is a fixed-output variant with internal resistor divider trimmed to 1.5V. The FB pin is omitted; Pin 5 is repurposed as PG. This eliminates external resistor tolerance errors and saves PCB area versus adjustable versions.
How does the output discharge function operate during shutdown?
When EN is pulled low, the internal discharge MOSFET (200Ω) connects OUT to GND automatically. For a typical 22μF output capacitor, VOUT discharges from 1.5V to <100mV in under 5ms - preventing back-powering of upstream circuits and enabling safe multi-rail power-down sequencing.
What is the thermal performance of MP2153GQFU-15-Z in a 2-layer PCB layout?
On a standard 63mm×63mm 2-layer board (EV2153-QFU-00A), θJA is 65°C/W. At 3A load and 5V input, junction temperature rise is ~195°C above ambient - confirming derating is required above 1.2A at TA = +85°C per Figure 9's derating curves.
Can MP2153GQFU-15-Z be used with a 2.2μH inductor instead of 1μH?
Yes, but switching frequency drops to ~500kHz, increasing output ripple and reducing light-load efficiency. The 1μH value is optimized for 1.1MHz operation and minimal size; using 2.2μH requires rechecking thermal performance and transient response per Figure 8's current-limit vs. VIN curves.
Is the PG pin compatible with 1.8V logic systems?
Yes. PG is open-drain with 0.4V max sink voltage at 1mA. When pulled up to 1.8V via a 220kΩ resistor, PG asserts high at ≥1.4V and pulls low to <0.4V - meeting standard 1.8V CMOS input thresholds for reliable microcontroller interfacing.
What happens during input undervoltage lockout (UVLO)?
When VIN falls below 2.3V (typ.), the MP2153GQFU-15-Z disables switching and enters shutdown. UVLO hysteresis is 200mV, so restart occurs only when VIN rises above 2.5V - preventing oscillation near brown-out thresholds in battery-powered systems.
MP2153GQFU-15-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):
- 1.5V
- Voltage - Output (Max):
- -
- 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-15-Z FAQ
1.How can I place an order for MP2153GQFU-15-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2153GQFU-15-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-15-Z reliable?
The price and inventory of MP2153GQFU-15-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-15-Z is usually 5 days.
3.What payment methods are accepted for MP2153GQFU-15-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2153GQFU-15-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2153GQFU-15-Z?
MP2153GQFU-15-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2153GQFU-15-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-15-Z?
For technical support, including MP2153GQFU-15-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2153GQFU-15-Z requirements.
6.How does Aetrix verify that MP2153GQFU-15-Z is sourced from the original manufacturer or authorized distributors?
All MP2153GQFU-15-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-15-Z meets industry standards.
7.What is the process for return or replacement of MP2153GQFU-15-Z?
All MP2153GQFU-15-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2153GQFU-15-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-15-Z part is unused and in its original packaging.
Return procedure for MP2153GQFU-15-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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