Monolithic Power Systems Inc. EV2617H-L-00A

Overview

EV2617H-L-00A from Monolithic Power Systems is an evaluation board for the MP2617H 3A, 1-cell Li-ion switching battery charger IC with NVDC power path management; supports USB2.0/USB3.0 and adapter inputs; delivers up to 3A SYS current; regulates VSYS from 3.5V to 4.4V; used for validating charging and system-power coexistence in portable electronics.

For engineers reviewing the EV2617H-L-00A datasheet, EV2617H-L-00A pinout, EV2617H-L-00A application, or EV2617H-L-00A equivalent, this board enables rapid validation of MP2617H's smart power path control, input current limit programming (450mA–3A), charge current setting (up to 2A), thermal fold-back behavior, and VSYS regulation under real-world load/battery interaction.

Technical Context

The EV2617H-L-00A implements a complete reference design for MP2617H, integrating synchronous buck topology with integrated power switches, no external blocking diode or sense resistor required. It supports five independent control loops: input current limit, input voltage limit, constant charge current, terminal battery voltage control, and on-die thermal fold-back.

Board-level features include dual-input selection (USB/adapter) via M0/M1 logic pins, programmable VSYS (3.5–4.4V) using R6/R7 voltage divider, and configurable EN pin control via JP3. The layout uses 0603/0805/1206 passives and a 2.2μH shielded inductor (TOKO FDA0620-2R2M) optimized for 1.6MHz operation.

Key Specifications

Availability

EV2617H-L-00A is available at Aetrix Electronics and suitable for smart phone development, portable handheld terminal prototyping, and e-book reader power architecture validation requiring stable component supply and fast-turn evaluation capability.

Supply support for EV2617H-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 semiconductor company specializing in high-performance analog and power ICs, with global design centers and ISO-certified manufacturing partners.

The MP2617H product line targets single-cell Li-ion battery-powered portable devices requiring simultaneous system power and battery charging with intelligent power path arbitration and robust thermal management.

FAQ

What input sources does the EV2617H-L-00A support?

The board accepts both 5V USB (2.0 and 3.0 compliant) and 12V AC adapter inputs. Input mode is selected via M0/M1 logic pins: Low/Low sets 450mA (USB2.0), Low/High sets 825mA (USB3.0), and High/Low enables programmable 0–3A adapter mode. Default floating M0/M1 configures 2A adapter input.

How is VSYS voltage programmed on this evaluation board?

VSYS is set using resistive divider R6 and R7 per V_VSYS = 1.152V × (R6 + R7)/R7. With R6/R7 unpopulated, VSYS defaults to 3.6V when VBATT < 3.4V, or 200mV above VBATT otherwise. Maximum programmable value is 4.4V.

Can the EV2617H-L-00A operate without a battery connected?

Yes. When BATT is floating, MP2617H detects no-battery condition and holds VSYS at the programmed value (or 4.4V if R6/R7 are unpopulated). To use only the DC-DC function, short SYS to BATT to disable linear charging while maintaining regulated VSYS output.

What thermal protection mechanisms are implemented?

The board leverages MP2617H's on-die thermal limiting regulation and thermal fold-back control loop. When junction temperature exceeds threshold, the IC reduces charge current and/or SYS output to maintain safe operating temperature-no external thermal sensor or circuitry required.

How is charge current configured on the EV2617H-L-00A?

Charge current is set by RISET resistor using I_CHG = 1800 × 1.15 / R_SET(kΩ) mA. The populated 1.05kΩ resistor yields ~2A. Values can be adjusted with precision 1% film resistors in 0603 package to achieve target charge rates from ~100mA to 2A.

Does the board include battery temperature monitoring capability?

Yes. The board provides NTC thermistor interface (RT1, RT2) and routing to MP2617H's dedicated NTC pin. When connected, the IC monitors battery temperature and disables charging outside safe limits (e.g., <0°C or >45°C), supporting JEITA-compliant charging profiles.