Monolithic Power Systems Inc. MP8802DJ-3.3-LF-P

Overview

MP8802DJ-3.3-LF-P from Monolithic Power Systems is a fixed-output, low-noise, low-dropout linear regulator delivering 3.3V at up to 250mA with ±2% output accuracy, 250mV dropout at full load, and 70dB PSRR at 1kHz. It operates from 2.7V–6.5V input and integrates thermal shutdown protection. It powers noise-sensitive analog blocks such as mobile handset PLLs and audio codecs.

For engineers reviewing the MP8802DJ-3.3-LF-P datasheet, MP8802DJ-3.3-LF-P pinout, MP8802DJ-3.3-LF-P application, or MP8802DJ-3.3-LF-P equivalent, key selection criteria include dropout voltage under 250mA load, PSRR performance at RF frequencies, ground current stability across load, thermal shutdown threshold, and compatibility with low-ESR ceramic output capacitors.

Technical Context

The MP8802DJ-3.3-LF-P uses a PMOS pass transistor architecture enabling ultra-low dropout (250mV @ 250mA) and high PSRR (70dB @ 1kHz, 30dB @ 1MHz). Its internal 1.222V bandgap reference feeds a precision feedback loop, ensuring ±2% output accuracy over –40°C to +85°C ambient.

It features active enable control (EN pin), thermal shutdown at 155°C with 30°C hysteresis, and stable operation with ≥2.2μF low-ESR ceramic output capacitance. Ground current remains tightly regulated at 125–155μA across 1–250mA load range.

Key Specifications

Pinout & Package

MP8802DJ-3.3-LF-P is housed in a 5-pin TSOT23-5 package (JEDEC MO-193), with 0.65mm pitch, 2.9mm × 1.6mm footprint, and exposed thermal pad on bottom side for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6206P332MR and ADP121-3.3ARJZ-R7, MP8802DJ-3.3-LF-P uniquely balances 250mA capability, 250mV dropout, and 70dB PSRR-making it optimal for noise-critical, medium-current RF and audio subsystems where both headroom and spectral purity are design constraints.

Availability

MP8802DJ-3.3-LF-P is available at Aetrix Electronics and suitable for mobile handset PLL power, 802.11 PC card core supply, and audio codec bias applications requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.

Supply support for MP8802DJ-3.3-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 mixed-signal ICs for power management, motor drive, and automotive applications.

The MP8802 belongs to MPS's ultra-low-noise LDO product line, designed specifically for powering noise-sensitive RF and audio circuits in portable wireless devices where PSRR, dropout, and output accuracy directly impact system-level RF performance and audio fidelity.

FAQ

What is the minimum input voltage required for stable 3.3V output at 250mA?

The MP8802DJ-3.3-LF-P requires a minimum input voltage of 3.55V to maintain regulation at 250mA load, based on its 250mV dropout specification. Below this, output voltage drops linearly with input; operation below 2.7V is outside guaranteed operating conditions per datasheet Section "Recommended Operating Conditions".

Can the MP8802DJ-3.3-LF-P be used with ceramic output capacitors?

Yes-it is explicitly characterized and stabilized for use with ≥2.2μF low-ESR ceramic capacitors, as confirmed in the "Stable With Low-ESR Output Capacitor" feature and Typical Application Circuit (Figure 3). X5R/X7R dielectrics are recommended; no series resistance or tantalum substitution is required.

Does the EN pin require a pull-up resistor for default operation?

No-EN is active-high and can be tied directly to the IN pin for automatic startup, as shown in the Typical Application Circuit. No external pull-up is needed; the internal EN threshold is 1.5V min, compatible with 2.7V+ inputs. Driving EN low (≤0.4V) fully disables the regulator with 1μA shutdown current.

How does thermal shutdown behave during continuous overload?

When junction temperature reaches 155°C, the device shuts down and holds output off until temperature falls by ~30°C (to ~125°C), then automatically resumes regulation. This hysteresis prevents oscillation and allows safe cooldown; no external reset or latch is required per Section "Thermal Protection" in Electrical Characteristics.

Is the 3.3V output adjustable using external resistors?

No-the MP8802DJ-3.3-LF-P is a fixed-output variant; FB is internally connected to set 3.3V. Adjustable versions (e.g., MP8802DJ-ADJ) use external R1/R2 dividers. Attempting to modify FB on this part will disrupt regulation and is not supported per datasheet "Fixed Voltage Part Numbers" table and Pin Functions description.

What is the maximum allowable power dissipation at +60°C ambient?

Using θJA = 220°C/W from the datasheet, PD(MAX) = (125°C − 60°C) / 220°C/W = 295mW. At 250mA and 3.3V output, this corresponds to a maximum VIN of ~4.5V (ΔV = 1.2V × 0.25A = 300mW). Exceeding this risks thermal shutdown; PCB copper area and airflow significantly affect real-world dissipation.

Does the device meet automotive AEC-Q200 requirements?

No-the MP8802DJ-3.3-LF-P is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q200 qualified. Its absolute maximum junction temperature (150°C) and thermal shutdown threshold (155°C) fall short of automotive Grade 2 (–40°C to +105°C) requirements; MPS offers separate AEC-Q200 LDO families for automotive use.