Monolithic Power Systems Inc. EV2617A-L-00A

Overview

EV2617A-L-00A from Monolithic Power Systems is an evaluation board for the MP2617A 3A, 1-cell synchronous buck switching battery charger IC with NVDC power path management, supporting 4.5–10V input, 0–4.35V battery voltage, and 3.6–4.4V SYS output; used to validate USB2.0/USB3.0 and adapter-powered portable charging systems.

For engineers reviewing the EV2617A-L-00A datasheet, EV2617A-L-00A pinout, EV2617A-L-00A application, or EV2617A-L-00A equivalent, this board enables functional validation of MP2617A's dual-role power delivery-simultaneous system load powering and Li-ion battery charging under programmable input current limits (450mA to 3A), thermal fold-back, and smart power path arbitration.

Technical Context

The EV2617A-L-00A implements a complete reference design for MP2617A, integrating all critical passive components-including 2.2μH shielded inductor (Wurth 744777002), 1206/0805/X7R/X5R ceramic capacitors, and precision setting resistors for I_IN limit (R_ILIM = 30.9kΩ) and charge current (R_ISET = 1.05kΩ).

It supports three operational modes via M0/M1 logic pins: USB2.0 (450mA), USB3.0 (825mA), and programmable adapter mode (up to 3A); EN control via JP3 enables full shutdown; VSYS is factory-set to 3.6V below 3.4V battery voltage and adjustable to ≤4.4V using R6/R7 divider per V_SYS = 1.152V × (1 + R7/R6).

Key Specifications

Availability

EV2617A-L-00A is available at Aetrix Electronics and suitable for smartphone reference design validation, portable terminal battery subsystem testing, and e-book power architecture prototyping requiring stable component supply and rapid functional verification.

Supply support for EV2617A-L-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 analog and mixed-signal semiconductor company specializing in high-efficiency power management ICs, with over two decades of leadership in DC-DC converters, battery chargers, and motor drivers.

The MP2617A product line delivers integrated single-cell Li-ion charging solutions with NVDC power path, targeting space-constrained portable electronics where simultaneous system operation and battery charging must coexist without voltage droop or thermal overload.

FAQ

What is the default input current limit setting on EV2617A-L-00A?

The board ships in Default Mode with M0 and M1 floating, configuring MP2617A for 2A adapter input current limit. This is achieved without external resistors and aligns with typical wall adapter use cases. USB2.0 (450mA) or USB3.0 (825mA) modes require jumpering M0/M1 to low/high states per Table 1 in the quick start guide.

How is VSYS voltage programmed on this evaluation board?

VSYS defaults to 3.6V when VBATT < 3.4V and rises to 200mV + VBATT otherwise. To set a fixed VSYS ≤4.4V, populate R6 and R7 as a resistor divider using V_SYS = 1.152V × (1 + R7/R6). The board includes unpopulated pads for R6/R7; no factory-installed resistors are present for this function.

Can EV2617A-L-00A operate without a battery connected?

Yes - when BATT is floating, MP2617A detects no-battery condition and holds VSYS at 4.4V (if R6/R7 are unpopulated) or the programmed value. For pure DC-DC operation without charging, short SYS to BATT to disable the linear charger path while retaining regulated output.

Which components on the board implement MP2617A's five control loops?

R_ILIM (30.9kΩ) sets input current limit; R_ISET (1.05kΩ) defines charge current; VIN clamp is internal (4.75V); battery termination is controlled by internal voltage threshold and timer; thermal regulation uses on-die temperature sensor and fold-back circuitry - all verified in the schematic and layout on pages 4–5 of the Rev. 1.0 document.

What is the role of JP3 on EV2617A-L-00A?

JP3 controls the EN (enable) pin of MP2617A. Connecting JP3 to VCC pulls EN high and disables the IC completely, even with VIN applied. Leaving JP3 open or connecting it to GND enables normal operation. This provides hardware-level on/off control independent of software or upstream power sequencing.

Does the board include NTC-based battery temperature monitoring?

Yes - the board features a dedicated NTC connector (pin 3 of 4-pin header "VCC, GND, NTC, ISET") and includes populated 10kΩ pull-up resistors (R2, RT1, RT2) matching MP2617A's internal 10μA NTC bias current. Full thermal monitoring requires an external NTC thermistor connected to that header.