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Monolithic Power Systems Inc. MP8801DJ-2.85-LF-Z
- Part No.:
- MP8801DJ-2.85-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MP8801DJ-2.85-LF-Z.pdf
- Description:
- IC REG LIN POS ADJ 150MA TSOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,457
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Product details
Overview
MP8801DJ-2.85-LF-Z from Monolithic Power Systems is a fixed-output, low-noise, low-dropout linear regulator delivering 2.85V at up to 150mA with ±2% accuracy over –40°C to +85°C. It operates from 2.7V–6.5V input, features 125μA ground current, 70dB PSRR at 1kHz, and 150mV dropout at 150mA - optimized for noise-sensitive RF and audio power rails in mobile handsets and 802.11 PC Cards.
For engineers reviewing the MP8801DJ-2.85-LF-Z datasheet, MP8801DJ-2.85-LF-Z pinout, MP8801DJ-2.85-LF-Z application, or MP8801DJ-2.85-LF-Z equivalent, this page provides verified package mapping (TSOT23-5), confirmed pin functions (IN/EN/GND/FB/OUT), thermal shutdown behavior, PSRR performance at 1kHz/1MHz, and design-meaningful load regulation (0.001%/mA).
Technical Context
The MP8801DJ-2.85-LF-Z uses a PMOS pass element enabling low dropout and high PSRR. Its internal 2.85V reference is set by a precision resistor divider; the FB pin allows conversion to adjustable output (1.25V–5V) via external R1/R2 with 1.222V feedback threshold.
Thermal shutdown activates at 155°C with 30°C hysteresis, and stability is ensured with ≥1μF ceramic capacitors on IN and OUT. Ground current remains stable across load (125–150μA), and line regulation is specified at 0.005%/V under VIN = VOUT + 0.5V to 6.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85V ±2% (–40°C to +85°C); enables direct replacement of 2.85V logic or analog supply rails without external resistors. |
| Max Output Current | 150mA continuous; supports power delivery to single-channel audio codecs, PLL VCOs, or low-power microcontrollers. |
| Dropout Voltage | 150mV at 150mA (VOUT = 3V); ensures regulation down to VIN = 3.0V, critical for battery-powered systems near end-of-discharge. |
| PSRR | 70dB @ 1kHz, 30dB @ 1MHz; suppresses switching noise from adjacent DC/DC converters feeding sensitive RF/analog circuitry. |
| Ground Current | 125μA typical (1mA–150mA load); minimizes quiescent power loss in always-on subsystems like real-time clocks or sensor biasing. |
| Input Voltage Range | 2.7V to 6.5V; compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and regulated 3.3V/5V system rails. |
| Thermal Shutdown | Triggers at 155°C with 30°C hysteresis; prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
MP8801DJ-2.85-LF-Z is housed in a TSOT23-5 package (2.9mm × 1.6mm × 0.9mm), with exposed thermal pad connected to GND for enhanced heat dissipation. The 5-pin configuration supports compact layout and efficient bypass capacitor placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input power supply | Primary power source for regulator core and pass transistor; requires ≥1μF ceramic bypass to GND for stability and transient suppression. |
| 2 GND | Power ground reference | Common return path for IN, OUT, EN, and FB; must be low-impedance and thermally coupled to PCB copper pour for thermal management. |
| 3 EN | Enable control input | Active-high logic interface (VIH ≥ 1.5V); connects to MCU GPIO or system power sequencer to control regulator startup/shutdown. |
| 4 FB | Feedback voltage sense | Monitors output via internal 1.222V reference; open for fixed 2.85V operation; connects to external divider for adjustable output. |
| 5 OUT | Regulated output | Delivers clean 2.85V to load; requires ≥1μF ceramic capacitor to GND for loop stability and noise filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise operation | 300nV/√Hz output voltage noise at 1kHz enables clean power for VCOs and microphone preamps without added filtering. |
| High PSRR architecture | 70dB rejection at 1kHz reduces coupling of digital switching noise into analog signal chains, improving SNR in mixed-signal ICs. |
| Adjustable output option | FB pin supports 1.25V–5V output via external resistor divider (R1/R2), allowing reuse across multiple voltage rails with one BOM item. |
| Stability with low-ESR caps | Operates stably with standard X5R/X7R ceramic capacitors (1–10μF), eliminating need for costly tantalum or polymer alternatives. |
| Ultra-low ground current | 125μA typical quiescent current maintains efficiency in battery-backed or energy-harvesting applications with light loads. |
Applications
| Mobile Handset PLL Power | 802.11 PC Card RF Supply |
|---|---|
|
Use Scenario: Powering voltage-controlled oscillators (VCOs) in cellular transceivers where phase noise directly impacts EVM and adjacent channel leakage. IC Role / Device Role / Timing Role: Low-noise LDO supplying clean 2.85V bias to PLL core, isolating it from noisy system DC/DC outputs. Use Value: 300nV/√Hz noise and 70dB PSRR minimize VCO phase jitter, preserving modulation accuracy in LTE/5G front-ends. |
Use Scenario: Providing regulated power to WLAN RF transceivers and baseband processors in mini-PCIe or CardBus form-factor modules. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable 2.85V to RF front-end ICs requiring tight voltage tolerance and fast load transient response. Use Value: 150mV dropout and 0.001%/mA load regulation maintain output stability during burst-mode TX/RX current swings. |
| Audio Codec Bias Rail | Low-Power Microcontroller Core Supply |
|
Use Scenario: Supplying reference voltage and analog bias to stereo audio codecs in portable media players or VoIP handsets. IC Role / Device Role / Timing Role: Low-noise LDO generating quiet 2.85V for DAC/ADC reference and op-amp rails to reduce audible background hiss. Use Value: 300nV/√Hz noise floor and <2% output accuracy preserve dynamic range and THD+N performance in 24-bit audio paths. |
Use Scenario: Powering ARM Cortex-M0+/M3 cores and peripherals in space-constrained IoT edge nodes operating from single Li-ion cells. IC Role / Device Role / Timing Role: Compact TSOT23-5 LDO delivering 2.85V to MCU I/O and analog subsystems during deep-sleep and active modes. Use Value: 125μA ground current extends battery life in always-on sensor monitoring; 2.7V min VIN supports operation down to 3.0V cell voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B285MR-G | 2.85V fixed, 150mA, 120mV dropout @ 100mA, 45dB PSRR @ 1kHz, 150μA IQ | Lower PSRR and higher ground current reduce noise immunity in RF-sensitive designs | Select when cost sensitivity outweighs PSRR/noise requirements; verify thermal margin with θJA = 250°C/W. |
| Analog Devices ADP125ARHZ-2.85-R7 | 2.85V fixed, 500mA, 135mV dropout @ 500mA, 65dB PSRR @ 1kHz, 120μA IQ | Higher current rating and larger 8-lead MSOP package increase board area and cost | Choose only if future design scaling requires >150mA or dual-rail support; not drop-in for TSOT23-5 footprint. |
Compared with XC6219B285MR-G and ADP125ARHZ-2.85-R7, MP8801DJ-2.85-LF-Z delivers superior 70dB PSRR and identical ground current in the smallest footprint, making it optimal for noise-critical, space-constrained RF and audio applications where 150mA suffices.
Availability
MP8801DJ-2.85-LF-Z is available at Aetrix Electronics and suitable for mobile handset PLL power, 802.11 PC card RF supply, and audio codec bias rail applications requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term lifecycle availability.
Supply support for MP8801DJ-2.85-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 power management ICs, founded in 1997 and headquartered in Kirkland, Washington.
The MP8801 belongs to MPS's low-noise LDO product line, engineered specifically for powering noise-sensitive analog and RF circuitry in portable wireless devices where PSRR, dropout, and output noise are critical.
FAQ
What is the minimum input voltage required for MP8801DJ-2.85-LF-Z to regulate at full 150mA load?
The device requires VIN ≥ VOUT + dropout voltage. At 150mA, dropout is 150mV (per datasheet, VOUT = 3V condition). For 2.85V output, minimum VIN is 3.0V. However, absolute minimum operating VIN is 2.7V - regulation is maintained down to that level at lighter loads.
Can MP8801DJ-2.85-LF-Z be used in adjustable mode, and what is the feedback reference voltage?
Yes - the FB pin accepts an external resistor divider to set output from 1.25V to 5V. The internal feedback reference voltage is precisely 1.222V (typical), with ±0.025V variation across temperature. R1 and R2 values must satisfy VOUT = 1.222 × (1 + R1/R2).
Is a feed-forward capacitor required for stable operation with the MP8801DJ-2.85-LF-Z?
No - the device is stable with standard 1μF ceramic capacitors on IN and OUT. A feed-forward capacitor (e.g., 100nF across R1) is optional and improves transient response only in adjustable configurations; it is unnecessary for fixed 2.85V operation.
What thermal derating applies when using MP8801DJ-2.85-LF-Z on a 2-layer PCB without thermal vias?
On a 2-layer board without thermal vias, θJA rises significantly above the datasheet's 220°C/W (measured on 4-layer JEDEC board). Derated power dissipation should assume ≥300°C/W, limiting continuous 150mA operation to VIN ≤ 4.5V at TA = 25°C to avoid thermal shutdown.
Does MP8801DJ-2.85-LF-Z support reverse polarity protection or input overvoltage clamping?
No - the device lacks integrated reverse-polarity or overvoltage protection. Absolute maximum IN voltage is +7V; exceeding this risks permanent damage. External protection (e.g., series Schottky diode, TVS) must be added if system-level fault conditions exist.
How does shutdown current behave when EN is pulled low, and what is the EN input leakage?
When EN is pulled below 0.4V, shutdown current is 0.1–1μA (typical 0.5μA) at VIN = 5V. EN input bias current is 0.01–1μA, ensuring compatibility with weak-drive GPIOs and minimizing current draw in system sleep states.
Are the top markings "C1" and "LF-Z" sufficient to confirm RoHS compliance and date code for MP8801DJ-2.85-LF-Z?
Yes - "C1" is the factory-assigned top marking for MP8801DJ-2.85 variants; "LF-Z" suffix confirms lead-free, halogen-free, RoHS-compliant tape-and-reel packaging. Year/week codes follow C1 (e.g., "2345" = 2023, week 45), per MPS marking convention.
MP8801DJ-2.85-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.25V (2.85V)
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.125V @ 150mA (Typ), -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- 70db ~ 30dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MP8801DJ-2.85-LF-Z FAQ
1.How can I place an order for MP8801DJ-2.85-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP8801DJ-2.85-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 MP8801DJ-2.85-LF-Z reliable?
The price and inventory of MP8801DJ-2.85-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 MP8801DJ-2.85-LF-Z is usually 5 days.
3.What payment methods are accepted for MP8801DJ-2.85-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP8801DJ-2.85-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP8801DJ-2.85-LF-Z?
MP8801DJ-2.85-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP8801DJ-2.85-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 MP8801DJ-2.85-LF-Z?
For technical support, including MP8801DJ-2.85-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP8801DJ-2.85-LF-Z requirements.
6.How does Aetrix verify that MP8801DJ-2.85-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP8801DJ-2.85-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 MP8801DJ-2.85-LF-Z meets industry standards.
7.What is the process for return or replacement of MP8801DJ-2.85-LF-Z?
All MP8801DJ-2.85-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP8801DJ-2.85-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 MP8801DJ-2.85-LF-Z part is unused and in its original packaging.
Return procedure for MP8801DJ-2.85-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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