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Monolithic Power Systems Inc. MP20042DG-PN-LF-P
- Part No.:
- MP20042DG-PN-LF-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-TFDFN Exposed Pad
- Datasheet:
-
MP20042DG-PN-LF-P.pdf
- Description:
- IC REG LINEAR 2.85V/3V 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,453
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Product details
Overview
MP20042DG-PN-LF-P from Monolithic Power Systems is a dual-channel, low-noise, high-PSRR linear regulator with fixed 3.0V and 2.85V outputs, 1% accuracy, 200mA per channel output capability, and 11μVRMS output noise - designed for precision power rails in battery-powered wireless and portable computing systems.
For engineers reviewing the MP20042DG-PN-LF-P datasheet, MP20042DG-PN-LF-P pinout, MP20042DG-PN-LF-P application, or MP20042DG-PN-LF-P equivalent, key selection criteria include dual independent enable control, ultra-low quiescent current (114μA), fast transient response with small ceramic capacitors, thermal shutdown at 140°C, and QFN8 package thermal performance.
Technical Context
The MP20042DG-PN-LF-P integrates two independent PMOS-based LDOs with separate EN1/EN2 inputs, enabling selective channel shutdown and near-zero standby current (≤1μA). Each regulator maintains regulation down to 110mV dropout at 100mA and delivers 72dB PSRR at 1kHz across its 2.5–6.0V input range.
Its internal current limiting (450mA per channel) and thermal protection (140°C trip with 10°C hysteresis) operate without external components. The device requires only 2.2μF ceramic output capacitors per channel and supports stable operation with ESR <1.2Ω - eliminating need for tantalum or electrolytic alternatives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage (Ch1/Ch2) | 3.0V / 2.85V - factory-trimmed fixed outputs; eliminates external feedback resistors and reduces BOM count. |
| Output Accuracy | ±1% - ensures reliable logic-level compliance for 3.0V/2.85V I/O domains in SoC and RF subsystems. |
| Max Output Current | 200mA per channel - sufficient to power baseband processors, Wi-Fi transceivers, or sensor hubs without derating. |
| PSRR @ 1kHz | 72dB - suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
| Output Noise (10Hz–100kHz) | 11μVRMS - meets low-noise analog supply requirements for ADCs, PLLs, and RF front-ends. |
| Quiescent Current | 114μA (both channels active) - extends battery life in always-on monitoring and sleep-mode applications. |
| Dropout Voltage | 110mV @ 100mA - enables operation from single-cell Li-ion (3.0V min) while maintaining regulation. |
Pinout & Package
MP20042DG-PN-LF-P uses a thermally enhanced 2mm × 2mm QFN8 package with exposed thermal pad (JEDEC MO-229 VCCD-3 compliant). Pin 1 is marked by a corner chamfer or dot; the exposed pad must be soldered to PCB ground for optimal thermal performance (θJA = 80°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VOUT1 | Channel 1 regulated output | 3.0V fixed rail; requires local 2.2μF ceramic capacitor for stability and transient response. |
| 2 VIN | Common input supply | Accepts 2.5–6.0V; shared input for both LDOs; requires ≥0.47μF input capacitor. |
| 3 EN1 | Channel 1 enable (active-high) | Logic-controlled ON/OFF; must not float - tie to VIN or microcontroller GPIO for sequencing. |
| 4 GND | Common ground reference | Return path for both regulators and thermal pad anchor; requires low-impedance connection to PCB ground plane. |
| 5 EN2 | Channel 2 enable (active-high) | Independent control of 2.85V rail; enables power-state partitioning (e.g., keep RF on while suspending core logic). |
| 6,7 NC | No-connect terminals | Not internally bonded; must remain unconnected per datasheet - no routing or stitching allowed. |
| 8 VOUT2 | Channel 2 regulated output | 2.85V fixed rail; isolated from VOUT1 electrically - supports >60dB channel-to-channel isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable pins | EN1/EN2 allow staggered power-up, dynamic rail gating, and system-level power state management without external logic. |
| Ultra-low noise output | 11μVRMS (10Hz–100kHz) enables direct powering of noise-sensitive analog circuits without additional filtering. |
| High PSRR at audio frequencies | 72dB @ 1kHz suppresses ripple from buck converters operating at 500kHz–2MHz with minimal headroom. |
| Thermal shutdown with hysteresis | 140°C trip + 10°C hysteresis prevents thermal cycling during sustained overload; recovers autonomously. |
| PMOS pass element architecture | Enables low dropout (110mV @ 100mA) and zero reverse-current flow - eliminates need for external blocking diodes. |
Applications
| Wireless LAN Transceiver Power | Portable Medical Sensor Hub |
|---|---|
|
Use Scenario: Powers 2.85V RF front-end and 3.0V baseband processor in IEEE 802.11n client devices with intermittent transmit bursts. IC Role / Device Role / Timing Role: Dual LDO provides clean, sequenced, and independently controllable voltage rails for RF/analog and digital subsystems. Use Value: 72dB PSRR rejects switching noise from shared 3.3V buck converter; 11μVRMS noise preserves EVM performance. |
Use Scenario: Supplies ultra-low-noise 3.0V rail to precision ADC and 2.85V rail to low-power MCU in wearable ECG monitor. IC Role / Device Role / Timing Role: Regulator delivers stable, low-drift analog supply while enabling MCU sleep mode via EN2 control. Use Value: ±1% accuracy ensures consistent ADC reference scaling; 114μA quiescent current extends battery runtime beyond 7 days. |
| Laptop Subsystem Power | Handheld Industrial Scanner |
|
Use Scenario: Generates 3.0V display interface voltage and 2.85V camera sensor bias in thin-client notebook designs. IC Role / Device Role / Timing Role: Dual-output LDO replaces discrete regulators and reduces board area by 40% vs. two SOIC-8 solutions. Use Value: 2mm × 2mm QFN8 footprint saves space; 110mV dropout allows operation from partially discharged battery (≥3.11V). |
Use Scenario: Powers barcode imager ASIC (2.85V) and Bluetooth LE radio (3.0V) in ruggedized handheld scanner with 10-year field life. IC Role / Device Role / Timing Role: Independent EN pins support deep-sleep wake-on-scan and rapid radio activation without full-system boot. Use Value: Thermal shutdown (140°C) protects against enclosure heat buildup; -40°C to +85°C rating ensures reliability in warehouse environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6223D302MR-G | 3.0V/2.85V dual LDO, but only 150mA per channel and 25μVRMS noise - higher noise and lower current capability. | Lacks independent EN pins; single enable controls both outputs - unsuitable for rail sequencing or partial shutdown. | Select when cost is primary constraint and noise/sequencing requirements are relaxed. |
| Ricoh RP512F3028GB | 3.0V/2.85V dual LDO with 200mA per channel, but 18μVRMS noise and 65dB PSRR @ 1kHz - 7dB lower rejection than MP20042. | Includes soft-start but no thermal shutdown hysteresis - less robust under sustained overload conditions. | Select when soft-start is required and PSRR above 65dB is not critical for the target signal chain. |
Compared with XC6223D302MR-G and RP512F3028GB, MP20042DG-PN-LF-P uniquely combines independent enable control, 11μVRMS noise, 72dB PSRR, and thermal hysteresis - making it optimal for noise-sensitive, battery-constrained, and thermally demanding dual-rail systems.
Availability
MP20042DG-PN-LF-P is available at Aetrix Electronics and suitable for wireless LAN transceivers, portable medical sensors, and handheld industrial scanners requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MP20042DG-PN-LF-P 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 in the US, China, and Taiwan.
The MP20042 belongs to MPS's low-noise, micropower LDO product line - engineered specifically for battery-powered portable electronics where ultra-low quiescent current, high PSRR, and compact dual-rail integration are mandatory.
FAQ
What are the exact output voltages of MP20042DG-PN-LF-P?
The MP20042DG-PN-LF-P is factory-configured with fixed 3.0V on VOUT1 and 2.85V on VOUT2. These values are laser-trimmed during production and do not require external feedback resistors. Output accuracy is guaranteed at ±1% over temperature and load.
Can MP20042DG-PN-LF-P operate from a single-cell Li-ion battery?
Yes - the MP20042DG-PN-LF-P supports input voltages from 2.5V to 6.0V and maintains regulation with only 110mV dropout at 100mA. This allows continuous operation down to ~3.11V on the 3.0V rail and ~2.96V on the 2.85V rail, covering most of a single-cell Li-ion discharge curve.
Is an external Schottky diode required for reverse-current protection?
Yes - the internal PMOS pass element contains a parasitic body diode. If VOUT exceeds VIN by >0.3V (e.g., during hot-swap or backup-battery scenarios), reverse current flows. An external Schottky diode (anode to VIN, cathode to VOUT) is required to block this path per datasheet Figure 4.
What is the minimum recommended output capacitance per channel?
The MP20042DG-PN-LF-P is stable with ceramic capacitors from 0.47μF to 10μF and ESR <1.2Ω. The typical application uses 2.2μF, which balances transient response, board area, and cost. Larger values improve load-step immunity but increase physical size.
How does thermal shutdown behave during sustained overload?
When junction temperature reaches 140°C, the MP20042DG-PN-LF-P disables both LDOs. It remains off until temperature drops by 10°C (to 130°C), then automatically resumes regulation. This hysteresis prevents oscillation and ensures safe cooldown before restart.
Are pins 6 and 7 (NC) electrically isolated or grounded internally?
Pins 6 and 7 are true no-connect terminals - not bonded to any internal circuitry and not connected to GND or substrate. They must remain unconnected on the PCB. Routing traces or applying solder paste to these pins violates the datasheet and may compromise reliability.
Does MP20042DG-PN-LF-P support power sequencing between the two outputs?
Yes - independent EN1 and EN2 pins allow precise control of turn-on/turn-off timing. For example, asserting EN1 before EN2 establishes a controlled 3.0V-first sequence for systems where analog bias must stabilize before digital logic activation.
MP20042DG-PN-LF-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-TFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.85V, 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 200mA (Typ), 0.25V @ 200mA (Typ)
- Current - Output:
- 200mA, 200mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 72dB ~ 47dB (100Hz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-QFN (2x2)
MP20042DG-PN-LF-P FAQ
1.How can I place an order for MP20042DG-PN-LF-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP20042DG-PN-LF-P 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 MP20042DG-PN-LF-P reliable?
The price and inventory of MP20042DG-PN-LF-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP20042DG-PN-LF-P is usually 5 days.
3.What payment methods are accepted for MP20042DG-PN-LF-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP20042DG-PN-LF-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP20042DG-PN-LF-P?
MP20042DG-PN-LF-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP20042DG-PN-LF-P 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 MP20042DG-PN-LF-P?
For technical support, including MP20042DG-PN-LF-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP20042DG-PN-LF-P requirements.
6.How does Aetrix verify that MP20042DG-PN-LF-P is sourced from the original manufacturer or authorized distributors?
All MP20042DG-PN-LF-P 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 MP20042DG-PN-LF-P meets industry standards.
7.What is the process for return or replacement of MP20042DG-PN-LF-P?
All MP20042DG-PN-LF-P units undergo pre-shipment inspection (PSI). If there is an issue with MP20042DG-PN-LF-P, 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 MP20042DG-PN-LF-P part is unused and in its original packaging.
Return procedure for MP20042DG-PN-LF-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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