Monolithic Power Systems Inc. EV2670DQ-00A

Overview

EV2670DQ-00A from Monolithic Power Systems is an evaluation board for the MP2670 battery protection IC and MP2602 charger IC, integrating high-voltage input surge tolerance (up to 30V), input overvoltage protection (OVP) with 1 µs response, and programmable overcurrent protection (500 mA limit). It supports battery charging systems in portable electronics with fault indication via open-drain FLT pin and dual enable control (EN1/EN2).

For engineers reviewing the EV2670DQ-00A datasheet, EV2670DQ-00A pinout, EV2670DQ-00A application, or EV2670DQ-00A equivalent, this board enables rapid validation of MP2670+MP2602 protection-charging co-design, OVP/BOVP/OTP behavior under real surge and fault conditions, and layout compatibility with QFN10-packaged analog power ICs.

Technical Context

The EV2670DQ-00A implements a cascaded protection–charging architecture: MP2670 (QFN10) sits upstream to condition VIN (3–30 V) and deliver regulated OUT to MP2602 (QFN10), which manages battery charging at 300 mA. Protection triggers-input OVP (>6 V), battery OVP (>4.4 V on VB), and overcurrent (set by RLIM)-force OUT to 0 V and assert FLT low.

Board-level design includes discrete biasing (R1–R7, RVB), ceramic filtering (C1–C5), status LEDs (CHG, ACOK), and configurable EN1/EN2 logic. The 6.6 cm × 4.8 cm PCB supports standard 0603/0805/1206 passives and provides test points for VIN, OUT, BAT, FLT, and VB signals.

Key Specifications

Availability

EV2670DQ-00A is available at Aetrix Electronics and suitable for battery management validation, charger reference design verification, and surge-tolerant power path qualification requiring stable component supply and documented layout practices.

Supply support for EV2670DQ-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 conversion, battery management, and motor control.

The EV2670DQ-00A belongs to MPS's evaluation board product line, designed specifically to accelerate development of single-cell Li-ion charging systems with integrated high-voltage protection, targeting portable consumer electronics and compact power adapters.

FAQ

What is the primary function of the EV2670DQ-00A evaluation board?

The EV2670DQ-00A is a hardware platform for evaluating the MP2670 battery protection IC and MP2602 charger IC together. It demonstrates cascaded input surge tolerance (up to 30 V), fast OVP response (1 µs), battery overvoltage cutoff (>4.4 V), and programmable current limiting - all with visible LED status and open-drain fault signaling.

Can the MP2670 be tested independently of the MP2602 on this board?

Yes. The MP2670 can be operated standalone: connect VIN and GND, leave MP2602 unpopulated or disconnected, and monitor OUT, FLT, and VB. The board's schematic isolates MP2670's output stage, allowing independent validation of protection functions without charging circuit interaction.

How is the overcurrent protection threshold set on the EV2670DQ-00A?

The OCP threshold is set to 500 mA using RLIM = 51.1 kΩ, per the MP2670's internal 0.8 V reference and equation I_LIM = 0.8 V / R_LIM. This resistor is placed between the ILIM pin and GND; changing RLIM directly scales the trip point for system-level current limiting.

What does the FLT pin indicate, and how is it used?

FLT is an open-drain output that goes LOW during any active protection event - input OVP, battery OVP, or overcurrent. It requires an external pull-up resistor (≥200 kΩ to VIN) to generate a logic-high idle state. The board includes R1 (200 kΩ) for this purpose, enabling microcontroller interrupt or LED fault signaling.

Does the board support battery voltage monitoring beyond BOVP detection?

No. The VB pin provides only a resistive divider interface (via RVB) for BOVP threshold comparison at 4.4 V; it is not a general-purpose ADC input or analog monitor. Voltage measurement must be performed externally using dedicated sense circuitry or MCU ADC channels connected to BAT or OUT nodes.

What are the key layout features validated by this evaluation board?

The board validates critical layout practices for dual-QFN battery management: thermal pad grounding for MP2670/MP2602, input/output power plane separation, Kelvin sensing for current-limit resistors, placement of high-frequency ceramic capacitors (C1–C5) near IC pins, and routing isolation between analog (VB, SS) and noisy digital (EN, FLT) signals.