Monolithic Power Systems Inc. EV8802DJ-00A

Overview

EV8802DJ-00A from Monolithic Power Systems is an evaluation board for the MP8802DJ2.5 low-dropout linear regulator, preconfigured to deliver a fixed 2.5V output at up to 250mA load current, operating from 2.7V–6.5V input, with thermal protection and 70dB PSRR at 1kHz - used for validating power integrity in audio codec and mobile PLL supply designs.

For engineers reviewing the EV8802DJ-00A datasheet, EV8802DJ-00A pinout, EV8802DJ-00A application, or EV8802DJ-00A equivalent, this board enables rapid validation of MP8802 regulator performance under real-world load transients, dropout behavior, and low-noise biasing requirements for sensitive analog subsystems.

Technical Context

The EV8802DJ-00A implements the MP8802DJ2.5 IC in a functional test configuration: EN tied to VIN via 10kΩ for automatic startup, no external feedback resistors installed (R1/R2 not stuffed), and output filtered by 1µF + 2.2µF ceramic capacitors for stability with low-ESR sources.

It supports adjustable output (1.25V–5V) via FB pin and external resistor divider, while defaulting to 2.5V; the board's layout includes dedicated pads for R1/R2 placement and exposes all five TSOT23-5 pins (VIN, GND, EN, FB, VOUT) for probing and modification.

Key Specifications

Availability

EV8802DJ-00A is available at Aetrix Electronics and suitable for audio codec power validation, mobile handset PLL supply testing, and low-noise LDO qualification requiring stable component supply and documented reference performance.

Supply support for EV8802DJ-00A 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 core expertise in DC/DC converters, LDOs, and motor drivers for portable, industrial, and automotive applications.

The MP8802 product line delivers ultra-low-noise, low-dropout linear regulators targeting noise-sensitive analog rails - designed specifically for RF PLLs, audio codecs, and precision sensor biasing where PSRR and load regulation are critical.

FAQ

What is the default output voltage of the EV8802DJ-00A board?

The board is preconfigured with the MP8802DJ2.5 IC, delivering a fixed 2.5V output without external resistors. This is confirmed by the Bill of Materials (U1 = MP8802DJ2.5), schematic, and Quick Start Guide - no R1/R2 components are populated, and EN is pulled high to VIN via 10kΩ for immediate operation.

Can the output voltage be adjusted, and how?

Yes - the board includes unpopulated R1 and R2 pads for a feedback resistor divider connected to the FB pin. Using the formula R1 = R2 × (VOUT/VFB − 1) with VFB = 1.222V and R2 = 10kΩ (±1%), users can set outputs from 1.25V to 5.0V. The Quick Start Guide provides a lookup table for common voltages.

Which pins of the MP8802 are accessible on the EV8802DJ-00A board?

All five TSOT23-5 pins are exposed: VIN (Pin 1), GND (Pin 2), EN (Pin 3), FB (Pin 4), and VOUT (Pin 5). The schematic and PCB layout confirm direct access to each terminal via test points or header footprints - enabling probing, signal injection, and external control of enable/disable functionality.

What input voltage range is supported, and what happens outside it?

The board supports 2.7V to 6.5V input, matching the MP8802's absolute maximum ratings. Below 2.7V, dropout occurs and regulation fails; above 6.5V risks permanent damage to the IC. Thermal protection activates if junction temperature exceeds safe limits during sustained 250mA operation at high VIN–VOUT differentials.

Does the board include output capacitance, and what type is used?

Yes - two ceramic capacitors are soldered: C1 = 1µF/10V X7R (0805) and C3 = 2.2µF/10V X5R (0805), placed close to VOUT and GND. These meet the MP8802's stability requirement for low-ESR output capacitors and provide effective high-frequency noise filtering per the datasheet recommendations.

Is thermal protection active on this evaluation board?

Yes - the MP8802DJ2.5 IC on the board includes internal thermal overload protection, as specified in the device datasheet and confirmed by the "Features" section. This protection shuts down the regulator if die temperature exceeds safe thresholds, preventing failure during extended full-load operation or poor heatsinking conditions.