My Inquiry
My Account
Monolithic Power Systems Inc. MP20046DQ-G-LF-Z
- Part No.:
- MP20046DQ-G-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
MP20046DQ-G-LF-Z.pdf
- Description:
- IC REG LINEAR 1.8V 2A 10QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,972
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MP20046DQ-G-LF-Z from Monolithic Power Systems is a fast-transient-response, 2A low-dropout linear regulator with 210mV dropout at 2A, preset 3.3V output, and integrated open-drain power-good (PG) output. It uses an internal PMOS pass element to achieve 75μA ground current at full load and 1μA shutdown current, making it suitable for battery-powered telecom and FPGA supply rails where efficiency and voltage monitoring are critical.
For engineers reviewing the MP20046DQ-G-LF-Z datasheet, MP20046DQ-G-LF-Z pinout, MP20046DQ-G-LF-Z application, or MP20046DQ-G-LF-Z equivalent, this device delivers verified fast load-line transient response, 70dB PSRR at 100Hz, 17μVRMS output noise, and thermal/current protection - key selection criteria for high-reliability embedded power rails.
Technical Context
The MP20046DQ-G-LF-Z implements a PMOS-based LDO architecture with internal bandgap reference and error amplifier, enabling ultra-low dropout and high PSRR. Its PG circuit monitors VOUT with 78–86% trip threshold and 1.15% hysteresis, asserting low when output falls below regulation.
It features active current limiting (3.3–4.5A) and thermal shutdown at +150°C with 20°C hysteresis, ensuring safe operation under overload or ambient stress. The EN pin provides negative-logic enable control with VIH = 1.5V and VIL = 0.4V, compatible with standard logic interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 2A continuous - supports high-current FPGA core or DSP I/O rail without external boost stages. |
| Dropout Voltage | 210mV at 2A - enables stable 3.3V output from as low as 3.51V input, extending battery runtime. |
| PSRR | 70dB at 100Hz - suppresses switching noise from upstream DC/DC converters in mixed-signal systems. |
| Output Noise | 17μVRMS (10Hz–30kHz) - meets low-noise requirements for RF front-end biasing and ADC reference supplies. |
| Ground Current | 75μA at 2A load - minimizes quiescent loss in always-on subsystems like baseband processors. |
| Power-Good Threshold | 78–86% of VOUT - provides reliable reset signaling for microcontrollers during brownout conditions. |
| Thermal Shutdown | +150°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
The MP20046DQ-G-LF-Z is housed in a thermally enhanced 10-pin QFN package (3mm × 3mm) with exposed thermal pad. Pin assignments are validated per MPS datasheet Rev. 1.21 (Jan 2020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 7, 8, 9, 10) | Input voltage supply | Accepts 2.7V–5.5V input; multiple pins reduce trace resistance and improve thermal path. |
| VOUT (Pins 1, 2, 3) | Regulated output | Delivers precise 3.3V ±1.5% across temperature; three pins support high-current routing and low impedance. |
| SENSE (Pin 4) | Output voltage sense | Enables remote sensing to compensate for PCB trace IR drop in high-accuracy applications. |
| GND (Pin 5 + Exposed Pad) | Ground reference & thermal sink | Exposed pad must be soldered to solid GND plane for θJC = 12°C/W and reliable 2A operation. |
| EN (Pin 6) | Enable control input | Negative-logic input: low = ON, high = OFF; VIH = 1.5V ensures compatibility with 1.8V/3.3V logic. |
| PG (Pin 7) | Open-drain power-good output | Asserts low when VOUT drops below 78% of nominal; requires external pull-up for system reset coordination. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Minimizes output voltage droop during sudden FPGA core current steps (e.g., 0→2A), reducing need for oversized bulk capacitance. |
| Low 210mV dropout at 2A | Enables operation from single-cell Li-ion (3.0V min) or tightly regulated intermediate rails without headroom penalty. |
| 70dB PSRR at 100Hz | Rejects ripple from adjacent buck converters, preserving signal integrity in RF transceivers and high-speed serial links. |
| 17μVRMS output noise | Meets stringent analog supply requirements for precision ADCs, DACs, and low-phase-noise clock buffers. |
| Integrated thermal & current protection | Self-protects against short-circuit, overtemperature, and overcurrent events without external circuitry or firmware intervention. |
Applications
| Telecom Baseband Power | FPGA Core Supply |
|---|---|
|
Use Scenario: Powering 3.3V I/O banks and configuration logic in small-cell baseband units operating from 3.8V intermediate bus. IC Role / Device Role / Timing Role: Primary LDO regulator delivering clean, monitored 3.3V with fast transient recovery during burst-mode data transmission. Use Value: PG output synchronizes FPGA reconfiguration with power stability; 210mV dropout allows use of lower-voltage intermediate rails, improving overall system efficiency. |
Use Scenario: Supplying 3.3V auxiliary rails for Xilinx Artix-7 FPGA configuration memory and JTAG interface in industrial controllers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO providing fault-monitored voltage to non-critical but timing-sensitive logic blocks. Use Value: 17μVRMS noise prevents bit errors in configuration loading; EN pin enables controlled power sequencing with main core LDO. |
| Battery-Powered Test Equipment | DSP Audio Processing Module |
|
Use Scenario: Regulating 3.3V for microcontroller, display driver, and USB PHY in handheld spectrum analyzers powered by 3.7V Li-ion. IC Role / Device Role / Timing Role: High-efficiency LDO maintaining stable rail during variable current draw (1mA–2A), with PG confirming readiness before measurement cycles. Use Value: 75μA quiescent current extends standby time; fast transient response prevents display flicker during processor wake-up bursts. |
Use Scenario: Providing 3.3V bias to TI C55x DSP I/O and codec interface in portable audio recorders. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO isolating sensitive analog audio paths from digital switching noise. Use Value: 70dB PSRR at 100Hz suppresses 100kHz switching artifacts from adjacent DC/DC; SENSE pin compensates for PCB trace losses in compact layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS7A4700RGWR | 3A, 20μVRMS noise, 1.2V–5.5V adjustable output, no PG pin, higher IQ (1.1mA) | Lacks power-good monitoring; requires external resistor network for fixed 3.3V; better for ultra-low-noise analog rails than system supervision. | Select when lowest possible noise is required and PG functionality is handled externally. |
| Analog Devices ADM7172ACPZ-R7 | 2A, 10μVRMS noise, 1.2V–5.5V adjustable, PG pin with 0.5% accuracy, 125°C max TJ | Higher PG accuracy and lower noise, but larger 10-lead LFCSP package and higher cost; rated only to +125°C junction. | Select when tighter PG threshold tolerance (±0.5%) and sub-10μVRMS noise justify footprint and cost trade-offs. |
Compared with TPS7A4700RGWR and ADM7172ACPZ-R7, the MP20046DQ-G-LF-Z uniquely balances 2A capability, integrated PG, 210mV dropout, and 75μA quiescent current in a compact QFN10 - making it optimal for space-constrained, battery-aware systems requiring both performance and supervisory functions.
Availability
MP20046DQ-G-LF-Z is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA power management, and battery-powered test equipment requiring stable component supply, RoHS-compliant packaging, and tape-and-reel delivery for automated assembly.
Supply support for MP20046DQ-G-LF-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 design centers across Asia and North America and global distribution.
The MP20046 belongs to MPS's high-current, fast-transient LDO product line, engineered specifically for powering FPGA, DSP, and telecom baseband ICs where low dropout, low noise, and integrated power supervision are mandatory.
FAQ
What output voltage does MP20046DQ-G-LF-Z deliver?
The MP20046DQ-G-LF-Z delivers a factory-preset 3.3V output with ±1.5% accuracy over -40°C to +125°C junction temperature. This is confirmed by the "DQ" package code and "S" suffix in the ordering guide, matching the 3.3V entry in the Output Voltage Selector Guide (Code S = 3.3V).
Does MP20046DQ-G-LF-Z require an external feedback resistor network?
No. The MP20046DQ-G-LF-Z has an internally trimmed output voltage and does not use external resistors. Its 3.3V output is set at wafer-level trimming, eliminating layout complexity and drift from external components - verified in the Electrical Characteristics table (VOUT = 3.267–3.333V at 3.3V nominal).
How is the power-good (PG) function implemented and what is its threshold?
The PG pin is an open-drain output that pulls low when VOUT falls below 78–86% of nominal (2.57–2.84V for 3.3V output), with 1.15% hysteresis. It requires an external pull-up resistor to a valid logic rail and is designed to drive microcontroller reset inputs - detailed in the Electrical Characteristics and Operation sections of Rev. 1.21.
What thermal performance can be expected in the QFN10 package?
In the QFN10 (3mm × 3mm) package, the MP20046DQ-G-LF-Z has θJA = 60°C/W and θJC = 12°C/W on a 4-layer JEDEC board. With proper exposed pad soldering to a thermal plane, it sustains 2A continuous output up to +85°C ambient - validated by Absolute Maximum Ratings and Thermal Resistance tables in the datasheet.
Can MP20046DQ-G-LF-Z be used with ceramic output capacitors?
Yes. The MP20046DQ-G-LF-Z is optimized for low-ESR ceramic capacitors: a 47µF X5R/X7R capacitor with ESR < 1.5Ω is recommended. This is explicitly stated in the Application Information section and confirmed by stability testing in the Typical Performance Characteristics.
Is the EN pin active-high or active-low?
The EN pin is active-low: the regulator operates when EN is pulled low (≤ 0.4V), and shuts down when EN is high (≥ 1.5V). This negative-logic behavior is defined in the PIN FUNCTIONS table and Electrical Characteristics (VIH/VIL specs), and matches the "EN" label in the typical application schematic.
What is the maximum input voltage rating?
The absolute maximum input voltage is 6.5V, but the recommended operating range is 2.7V to 5.5V. Operation above 5.5V risks damage even briefly, while operation below 2.7V may prevent regulation at full 2A load due to dropout constraints - both specified in Absolute Maximum Ratings and Recommended Operating Conditions.
MP20046DQ-G-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.47V @ 2A
- Current - Output:
- 2A
- Current - Quiescent (Iq):
- 300 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (100Hz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-QFN (3x3)
MP20046DQ-G-LF-Z FAQ
1.How can I place an order for MP20046DQ-G-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP20046DQ-G-LF-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 MP20046DQ-G-LF-Z reliable?
The price and inventory of MP20046DQ-G-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP20046DQ-G-LF-Z is usually 5 days.
3.What payment methods are accepted for MP20046DQ-G-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP20046DQ-G-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP20046DQ-G-LF-Z?
MP20046DQ-G-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP20046DQ-G-LF-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 MP20046DQ-G-LF-Z?
For technical support, including MP20046DQ-G-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP20046DQ-G-LF-Z requirements.
6.How does Aetrix verify that MP20046DQ-G-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP20046DQ-G-LF-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 MP20046DQ-G-LF-Z meets industry standards.
7.What is the process for return or replacement of MP20046DQ-G-LF-Z?
All MP20046DQ-G-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP20046DQ-G-LF-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 MP20046DQ-G-LF-Z part is unused and in its original packaging.
Return procedure for MP20046DQ-G-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP20046DQ-G-LF-Z Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
