Monolithic Power Systems Inc. MP8801DJ-2.5-LF-P

Overview

MP8801DJ-2.5-LF-P from Monolithic Power Systems is a fixed-output, low-noise, low-dropout linear regulator delivering 2.5V ±2% at up to 150mA load current with 100mV dropout at 100mA, 70dB PSRR at 1kHz, and 125μA ground current. It operates from 2.7V–6.5V input and targets noise-sensitive analog power rails such as mobile handset PLL VCO supplies and audio codec biasing.

For engineers reviewing the MP8801DJ-2.5-LF-P datasheet, MP8801DJ-2.5-LF-P pinout, MP8801DJ-2.5-LF-P application, or MP8801DJ-2.5-LF-P equivalent, key selection criteria include output accuracy over temperature, PSRR performance at RF frequencies, thermal shutdown threshold (155°C), dropout behavior under full load, and compatibility with low-ESR ceramic output capacitors.

Technical Context

The MP8801DJ-2.5-LF-P uses a PMOS pass transistor architecture enabling low dropout and high PSRR without requiring an external bypass capacitor for stability. Its internal feedback reference is trimmed to 1.222V, supporting both fixed 2.5V output and adjustable operation via external resistor divider.

It integrates enable control with 1.5V logic-high threshold and 0.4V logic-low threshold, thermal shutdown with 30°C hysteresis, and operates across –40°C to +85°C ambient temperature. The device is stable with 1μF–10μF X5R/X7R ceramic output capacitors and requires no feed-forward capacitor for basic operation.

Key Specifications

Pinout & Package

MP8801DJ-2.5-LF-P is housed in a TSOT23-5 surface-mount package (2.9mm × 1.6mm × 0.95mm height), optimized for space-constrained portable electronics and featuring exposed pad for thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise LDO applications.

Compared with XC6219B252MR-G and RT9013-25P5, MP8801DJ-2.5-LF-P delivers superior RF noise immunity (70dB vs ≤60dB PSRR) and tighter dropout (100mV vs ≥120mV), making it optimal for PLL and audio applications where supply integrity directly impacts signal quality.

Availability

MP8801DJ-2.5-LF-P is available at Aetrix Electronics and suitable for mobile handset RF subsystems, audio codec biasing, 802.11 PC card power delivery, and low-power sensor node regulation requiring stable component supply across industrial and consumer production cycles.

Supply support for MP8801DJ-2.5-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 power management ICs, including DC/DC converters, LDOs, LED drivers, and motor drivers for computing, telecom, automotive, and industrial markets.

The MP8801 product line targets noise-critical analog power domains-specifically RF VCOs, audio codecs, and precision sensor interfaces-where low dropout, high PSRR, and ultralow output noise are mandatory design constraints.

FAQ

What is the maximum input voltage rating for MP8801DJ-2.5-LF-P?

The absolute maximum input voltage is +7V, but the recommended operating range is 2.7V to 6.5V. Exceeding 6.5V may trigger internal protection or degrade long-term reliability, even if thermal shutdown does not activate immediately.

Can MP8801DJ-2.5-LF-P be used in adjustable-output mode despite its fixed-voltage marking?

Yes-the FB pin remains accessible and functional. With the internal 2.5V divider disconnected (not internally hardwired), users can configure 1.25V–5V output using external R1/R2 resistors per Equation (1), maintaining 1.222V feedback threshold.

Is a feed-forward capacitor required for stable operation?

No-feed-forward capacitance across R1 is optional and improves transient response only. The device is inherently stable with standard 1μF–10μF ceramic output capacitors and requires no additional compensation components for basic fixed-output use.

What is the thermal resistance (θJA) of the TSOT23-5 package under standard JEDEC 4-layer board conditions?

θJA is 220°C/W, measured per JESD51-7 on a specified JEDEC board. This value is for comparative analysis only; actual thermal performance depends on PCB copper area, airflow, and nearby heat sources.

Does MP8801DJ-2.5-LF-P support reverse polarity or reverse current protection?

No-it lacks integrated reverse-voltage or reverse-current blocking. External protection diodes or MOSFETs are required if the application risks input reversal or back-driving from downstream circuitry.

How does load regulation performance compare across temperature?

Load regulation is better than 0.001%/mA from 1mA to 150mA at 25°C, and remains within 0.002%/mA over –40°C to +85°C, ensuring minimal output deviation during dynamic load changes in wide-temperature environments.

What is the minimum output capacitor ESR required for stability?

None-MP8801DJ-2.5-LF-P is designed to be stable with zero-ESR ceramic capacitors (X5R/X7R). Unlike older LDO architectures, it imposes no minimum ESR requirement, simplifying capacitor selection and improving reliability.