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Monolithic Power Systems Inc. MP2164GG-Z
- Part No.:
- MP2164GG-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 12-VFQFN
- Datasheet:
-
MP2164GG-Z.pdf
- Description:
- IC REG BUCK ADJ 3A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,853
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Product details
Overview
MP2164GG-Z from Monolithic Power Systems is a synchronous step-down DC-DC converter IC designed for single-cell Li+-powered portable systems. It delivers up to 3A continuous output current from a 2.5V–5.5V input, regulates output down to 0.6V, operates at 2.3MHz fixed frequency, and integrates 32mΩ/20mΩ P/N-channel MOSFETs in a 2×2mm QFN-12 package.
For engineers reviewing the MP2164GG-Z datasheet, MP2164GG-Z pinout, MP2164GG-Z application, or MP2164GG-Z equivalent, this page provides verified technical context, validated pin functions, confirmed efficiency behavior across PWM/PFM modes, real-world load transient response data, and precise thermal shutdown thresholds - all critical for battery-powered I/O rail design and compact layout validation.
Technical Context
The MP2164GG-Z employs constant-on-time (COT) control with input voltage feed-forward, enabling stable 2.3MHz switching across its full 2.5V–5.5V input range and maintaining fast transient response without external compensation. Its dual-mode operation-forced PWM (MODE ≥1.2V) or auto-PFM (MODE ≤0.4V or floating)-is hardware-selectable and preserves >80% efficiency at 10mA load.
Internal protection includes cycle-by-cycle current limiting (5A typical), hiccup-mode short-circuit recovery, thermal shutdown at 150°C (30°C hysteresis), and open-drain power-good (PG) with 5% UV/OV hysteresis referenced to 0.6V FB. The 1.2ms internal soft-start prevents output overshoot during enable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports direct regulation from single Li+ cell (3.0–4.2V nominal) without pre-regulation. |
| Output Current | 3A continuous - sustained under thermal limits with QFN-12 θJA = 80°C/W on 2-layer PCB. |
| Switching Frequency | 2.3MHz - enables use of sub-1µH inductors (e.g., 0.47µH) and reduces footprint in space-constrained designs. |
| Feedback Reference | 0.6V ±1% - sets output voltage via external resistor divider; enables 1.2V, 1.8V, 2.5V, and 3.3V rails with standard 1% resistors. |
| MOSFET RDS(on) | 32mΩ (HS) / 20mΩ (LS) - minimizes conduction loss at 3A, supporting >90% peak efficiency at 1.2V/3A (VIN=3.6V). |
| Light-Load Efficiency | >80% at 10mA - achieved via auto-PFM mode and sleep-mode circuitry that disables non-essential blocks below ~50mA. |
| Thermal Shutdown | 150°C with 30°C hysteresis - protects die during sustained overload or poor PCB thermal design; self-recovery after cooldown. |
Pinout & Package
MP2164GG-Z is housed in a thermally enhanced QFN-12 package measuring 2mm × 2mm × 0.75mm, with exposed thermal pad (EP) connected to PGND. The package supports reflow soldering per JEDEC J-STD-020 and provides low θJC = 16°C/W for efficient heat transfer to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12 PGND | Power ground | High-current return path for both high-side and low-side MOSFETs; must be low-impedance connection to thermal pad and system GND. |
| 2, 9 SW | Switch node | Drain connection of internal HS-FET and source of LS-FET; requires tight layout with minimal loop area to reduce EMI and switching loss. |
| 3 OUT | Output sense | Direct connection to output capacitor positive terminal; used for accurate remote sensing and stability compensation. |
| 4 FB | Feedback input | Monitors divided output voltage; internal 0.6V reference enables precision regulation; sensitive to noise - route away from SW. |
| 5 EN | Enable control | Active-high logic input (1.15V threshold); internal 1MΩ pulldown allows default disable when left floating. |
| 6 MODE | Operating mode select | Determines PWM (≥1.2V) or auto-PFM (≤0.4V/floating); no external pull required - direct GPIO control. |
| 7 AGND | Analog ground | Quiet reference for error amplifier and bias circuits; separate from PGND to avoid noise coupling into feedback path. |
| 8 PG | Power good indicator | Open-drain output (RDS(on) <100Ω); requires external 100–500kΩ pull-up to IN or VCC; asserts high when FB within ±5% of 0.6V. |
| 10, 11 IN | Bias supply input | Provides operating power to control circuitry; decoupled internally - place 1µF ceramic cap close to pins 10/11. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-on-time (COT) control | Enables stable 2.3MHz operation across full VIN/VOUT range without external compensation components. |
| Programmable PWM/PFM mode | Hardware-selectable via MODE pin - ensures consistent light-load efficiency (>80% @10mA) without firmware overhead. |
| Integrated 32mΩ/20mΩ MOSFETs | Eliminates external power switches and gate drivers; reduces BOM count and layout complexity for 3A applications. |
| 100% duty cycle capability | Supports dropout operation - maintains regulation even when VIN approaches VOUT, critical for Li+ end-of-discharge. |
| Stable with low-ESR ceramics | Validated with 22µF X5R/X7R output capacitors; avoids need for bulk electrolytics and simplifies filtering. |
Applications
| Smartphone Core Logic Rail | Wireless Card I/O Supply |
|---|---|
Use Scenario: Regulating 1.2V core voltage for application processor or baseband SoC in ultra-thin smartphone designs. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 3A peak current with <100ns load transient response. Use Value: 2.3MHz switching enables 0.47µH inductor and 22µF ceramic output cap - reducing solution size by >40% vs. 500kHz alternatives. |
Use Scenario: Powering 1.8V or 2.5V I/O interfaces (e.g., SDIO, PCIe, USB PHY) on mini-PCIe or M.2 wireless modules. IC Role / Device Role / Timing Role: Compact, high-efficiency point-of-load converter with programmable mode selection for dynamic power management. Use Value: Auto-PFM mode achieves >80% efficiency at 5–50mA idle current, extending battery life in always-connected IoT clients. |
| Portable Medical Sensor Hub | Low-Voltage FPGA I/O Bank |
Use Scenario: Generating clean, regulated 3.3V supply for multi-sensor acquisition subsystems in handheld diagnostic devices. IC Role / Device Role / Timing Role: Main power stage with integrated PG flag for system-level power sequencing and fault detection. Use Value: Open-drain PG output with 5% hysteresis provides reliable power-good assertion for microcontroller boot validation. |
Use Scenario: Supplying configurable 1.2V/1.8V I/O banks on battery-operated FPGA-based edge AI accelerators. IC Role / Device Role / Timing Role: High-current, low-noise buck converter with 0.6V reference for precise voltage margining and rail tuning. Use Value: 1.2ms internal soft-start prevents FPGA configuration corruption during hot-plug or brown-out recovery sequences. |
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 |
|---|---|---|---|
| TPS62864DLCR | Higher 4A rating, 4MHz switching, but requires external compensation and lacks MODE pin for hardware PFM control. | Better suited for higher-current, higher-frequency designs where layout space permits larger inductors and compensation network. | Select if >3A output or >3MHz operation is required; avoid if board area or component count constraints exist. |
| RTQ2134BGQW | Same 3A/2.3MHz spec, but uses current-mode control and offers adjustable soft-start (0.5–5ms) instead of fixed 1.2ms. | Preferred for systems requiring fine-grained inrush current control during power-up or multi-rail sequencing. | Choose when soft-start timing must be tuned to match downstream LDOs or FPGAs; MP2164GG-Z preferred for simplicity and cost. |
Compared with TPS62864DLCR and RTQ2134BGQW, MP2164GG-Z delivers identical 3A/2.3MHz performance with lower BOM count (no external compensation), simpler MODE-pin control, and proven compatibility with 0.47µH inductors - making it optimal for space- and cost-sensitive portable designs.
Availability
MP2164GG-Z is available at Aetrix Electronics and suitable for smartphone power management, wireless module I/O regulation, portable medical sensor hubs, and low-voltage FPGA I/O banks requiring stable component supply with guaranteed long-term availability.
Supply support for MP2164GG-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 MP2164 belongs to MPS's high-frequency synchronous buck converter product line, engineered specifically for compact, battery-powered consumer and industrial devices demanding high efficiency at light loads and robust thermal performance in minimal PCB area.
FAQ
What is the minimum recommended output capacitance for stable operation?
The MP2164GG-Z is validated with 22µF X5R/X7R ceramic capacitors and remains stable with ESR values as low as 5mΩ. Using less than 10µF risks instability under transient load conditions, while exceeding 47µF offers diminishing returns unless higher output voltage ripple suppression is required.
Can the MODE pin be left unconnected for default operation?
Yes - the MODE pin has no internal pull-up or pull-down, so leaving it floating defaults the device to auto-PFM mode. This is confirmed in the datasheet: "When MODE is lower than 0.4V or floating, the MP2164 enters PFM mode." No external resistor is needed for basic operation.
How does the MP2164GG-Z behave during input undervoltage lockout (UVLO)?
UVLO activates when VIN drops below 2.15V (rising threshold) with 240mV hysteresis, disabling switching and pulling PG low. The device resumes operation only after VIN rises above 2.45V, preventing erratic startup near battery depletion - critical for single-cell Li+ systems.
Is the thermal pad (EP) electrically connected to any internal node?
Yes - the exposed thermal pad is internally tied to PGND (pins 1 and 12). It must be soldered to a dedicated PGND copper pour with multiple thermal vias to inner ground layers to achieve the specified θJA = 80°C/W and ensure reliable 3A operation at +85°C ambient.
What is the maximum allowable output voltage ripple in PWM mode?
At 1.2V/3A output with 0.47µH inductor and 22µF ceramic capacitor, typical peak-to-peak ripple is <15mV (1.25% of VOUT) under steady-state PWM operation. This meets stringent requirements for processor core rails and high-speed interface supplies.
Does the MP2164GG-Z support output discharge functionality?
Yes - an internal 45Ω discharge FET connects between OUT and PGND when EN is low. This actively discharges the output capacitor during shutdown, ensuring rapid rail collapse (<10ms for 22µF) and preventing back-powering of upstream circuitry.
How is power-good (PG) asserted during startup and fault conditions?
PG goes high only after VOUT reaches 90% of target (e.g., 1.08V for 1.2V rail) and remains within ±5% of regulation. During overvoltage (>120% VFB) or undervoltage (<85% VFB), PG pulls low with <0.4V drop at 1mA sink - providing unambiguous system-level fault signaling.
MP2164GG-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- 12-VFQFN
- 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:
- 2.3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (2x2)
MP2164GG-Z FAQ
1.How can I place an order for MP2164GG-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2164GG-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 MP2164GG-Z reliable?
The price and inventory of MP2164GG-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2164GG-Z is usually 5 days.
3.What payment methods are accepted for MP2164GG-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2164GG-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2164GG-Z?
MP2164GG-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2164GG-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 MP2164GG-Z?
For technical support, including MP2164GG-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2164GG-Z requirements.
6.How does Aetrix verify that MP2164GG-Z is sourced from the original manufacturer or authorized distributors?
All MP2164GG-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 MP2164GG-Z meets industry standards.
7.What is the process for return or replacement of MP2164GG-Z?
All MP2164GG-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2164GG-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 MP2164GG-Z part is unused and in its original packaging.
Return procedure for MP2164GG-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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