Monolithic Power Systems Inc. EV2341-TL-00A

Overview

EV2341-TL-00A from Monolithic Power Systems is a fully assembled evaluation board designed to demonstrate the MP2341GTL synchronous step-down white LED driver IC. It supports 2-series WLED loads (5.9 V typical), delivers up to 2 A output current, operates across 8–24 V input, achieves ≥95% efficiency, and implements dual analog/PWM dimming with 50:1 and 1000:1 dimming ratios respectively.

For engineers reviewing the EV2341-TL-00A datasheet, EV2341-TL-00A pinout, EV2341-TL-00A application, or EV2341-TL-00A equivalent, this board enables rapid validation of MP2341GTL's high-efficiency LED driving capability, thermal performance under 2 A load, analog dimming linearity (0.7–1.44 V EN/DIM control), PWM dimming fidelity (100 Hz–2 kHz), and fault protections including open-LED, short-circuit, and thermal shutdown.

Technical Context

The EV2341-TL-00A implements the MP2341GTL - a monolithic 24 V-input, 2 A synchronous buck LED driver in SOT583 - configured for constant-current operation with fixed 1 MHz switching frequency and peak-current-mode control. Its feedback reference is 100 mV, enabling precise current regulation via a 50 mΩ sense resistor (R1).

Board-level design integrates a 6.5 µH power inductor (Wurth 744314650), input/output ceramic filtering (10 µF/0.1 µF), and dual dimming interfaces: EN/DIM for analog voltage or PWM control, and PDIM for dedicated high-frequency analog dimming (≥10 kHz). Protection logic is implemented entirely within the MP2341GTL IC.

Key Specifications

Availability

EV2341-TL-00A is available at Aetrix Electronics and suitable for infrared LED driver validation, handheld computer backlight characterization, flashlight prototype development, and general-purpose LED lighting system integration requiring stable component supply and fast time-to-test.

Supply support for EV2341-TL-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 a focus on energy-efficient DC-DC conversion, LED drivers, motor drivers, and battery management solutions.

The MP2341 product line delivers integrated synchronous buck LED drivers optimized for space-constrained, high-current portable and industrial lighting applications - combining low-RDS(ON) MOSFETs, precision current sensing, and multi-mode dimming in ultra-small packages.

FAQ

What input voltage range does the EV2341-TL-00A support?

The board accepts 8 V to 24 V DC input, matching the operating range of the MP2341GTL IC. This allows direct testing with common lab supplies, 12 V automotive systems, and 24 V industrial rails without external regulators or level-shifting circuitry.

How do I configure analog dimming on this evaluation board?

Analog dimming is enabled by applying a 0.7–1.44 V DC signal between EN/DIM and GND; LED current scales linearly from minimum to full 2 A. Alternatively, apply a ≥10 kHz PWM signal to PDIM with >1.5 V high and <0.4 V low levels for noise-immune analog-equivalent control.

Can the EV2341-TL-00A drive more than two LEDs in series?

No - the board is optimized for a 5.9 V output (2× WLED), and its feedback network and compensation are tuned for that VOUT. Driving higher-VF strings would require reconfiguring RFB dividers and revalidating loop stability, which is outside the scope of this pre-characterized evaluation platform.

What protection features are demonstrated on this board?

The board demonstrates all MP2341GTL-integrated protections: open-LED detection (shuts down if no LED string is connected), LED+–LED− or LED+–GND short-circuit response, cycle-by-cycle over-current limiting with hiccup mode, over-voltage auto-recovery, and thermal shutdown above 150 °C junction temperature.

Is the MP2341GTL IC soldered to the board, and can it be replaced?

Yes - the MP2341GTL is permanently mounted in SOT583 package (U1) and is not socketed. Replacement requires hot-air rework and adherence to MPS's recommended solder profile; the board layout and thermal pad design are specific to this IC and not compatible with alternate drivers.

Does the board include test points for key signals?

Yes - test points are provided for VIN, GND, LED+, LED−, EN/DIM, PDIM, VFB, and SW nodes. These allow oscilloscope probing of startup transients, dimming waveforms, switch-node ringing, and current-sense voltage without soldering or invasive modification.