Monolithic Power Systems Inc. MP2410AGJE-Z

Overview

MP2410AGJE-Z from Monolithic Power Systems is a 24V, 2A, synchronous step-down white LED driver with integrated 100mΩ high-side MOSFET and 80mΩ low-side synchronous rectifier, operating at fixed 1MHz switching frequency and delivering 100mV feedback reference for precise current regulation in flashlight and handheld computer backlight systems.

For engineers reviewing the MP2410AGJE-Z datasheet, MP2410AGJE-Z pinout, MP2410AGJE-Z application, or MP2410AGJE-Z equivalent, this device supports analog/PWM dual dimming on a single EN/DIM pin, includes NTC-based thermal protection, open-LED and short-circuit protection, and is validated for TSOT23-8 package layout with BST bootstrap capacitor requirements.

Technical Context

The MP2410AGJE-Z implements peak current mode control with internal error amplifier comparing FB voltage to 100mV reference, generating COMP voltage to regulate high-side switch conduction time. Its fixed 1MHz oscillator initiates each cycle, and dead-time control prevents shoot-through between high- and low-side FETs.

It integrates UVLO (3.5V turn-on, 0.12V hysteresis), auto-restart after fault (2.4ms hiccup timer), and dual-stage thermal protection: NTC-based ambient temperature monitoring (0.34–0.47V shutdown threshold) plus junction-level thermal shutdown at 150°C with 60°C hysteresis.

Key Specifications

Pinout & Package

MP2410AGJE-Z is housed in a thermally enhanced TSOT23-8 package (2.9mm × 1.6mm × 0.9mm), supporting high-power density designs with θ_JA = 100°C/W on 4-layer PCB. Pin 1 is lower-left when reading top marking "ARV" left-to-right.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down LED driver applications.

Compared with MPQ2410AGJE-AEC1-Z, the MP2410AGJE-Z omits automotive qualification but retains identical electrical behavior and thermal protection - making it optimal for cost-sensitive commercial designs. Versus LT3466-1EDD, it delivers 3–5% higher efficiency and eliminates 3–4 external components while adding NTC and dual dimming.

Availability

MP2410AGJE-Z is available at Aetrix Electronics and suitable for flashlight driver, handheld computer backlight, infrared illuminator, and general-purpose LED lighting applications requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for MP2410AGJE-Z 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, LED drivers, and motor control solutions.

The MP2410A belongs to MPS's high-efficiency LED driver product line, designed specifically for compact, thermally constrained portable and industrial lighting systems requiring integrated protection and dual dimming capability.

FAQ

What is the minimum input voltage required to start the MP2410AGJE-Z?

The MP2410AGJE-Z features under-voltage lockout with a turn-on threshold of 3.5V to 4.0V (typical 3.7V) and 0.12V hysteresis. It will not initiate switching until VIN exceeds this threshold, ensuring stable startup across battery discharge profiles and noisy input rails.

Can the MP2410AGJE-Z drive LEDs in parallel configurations?

No - the MP2410AGJE-Z is designed exclusively for constant-current series LED strings. Driving parallel LEDs would cause current imbalance due to V_F mismatch, risking thermal runaway. For parallel operation, discrete current-setting per string or a multi-channel driver is required.

How does the NTC pin function, and what NTC resistor value should be used?

The NTC pin sources a 58µA (typ) current through an external NTC thermistor to ground. A standard 10kΩ @ 25°C NTC (B25/85 = 3950K) yields ~1.25V at 25°C and drops to 0.41V at ~85°C, triggering thermal foldback. Resistor selection must match the V_{H_NTC}/V_{L_NTC} thresholds in the datasheet.

Is the BST capacitor mandatory, and what type is recommended?

Yes - the BST capacitor (0.1µF X7R ceramic, rated ≥10V) is mandatory to form the floating supply for the high-side gate driver. Without it, the high-side MOSFET cannot turn on, causing complete functional failure. Placement must be directly between BST and SW pins with minimal trace length.

Does the MP2410AGJE-Z support adjustable switching frequency?

No - the MP2410AGJE-Z operates at a fixed 1MHz switching frequency, factory-trimmed and not user-adjustable. This simplifies EMI filter design and ensures consistent efficiency and thermal performance across all units without external timing components.

What happens during an LED short-circuit event?

Upon LED short-circuit, the MP2410AGJE-Z activates cycle-by-cycle current limiting, then enters burst mode if FB rises above V_{FB_BURST_AL}. If current exceeds 5.5A (IOCP), it disables both FETs for 2.4ms, pulls COMP to ground, and restarts with soft-start - preventing damage while maintaining system visibility.

How is analog dimming range calibrated, and what is the minimum dimming current?

Analog dimming maps EN/DIM voltage linearly from 0.63V (min dim, ~5% I_LED) to 1.44V (full scale). At V_EN/DIM = 0.63V, output current is regulated to ~100mA for a 2A-rated design - confirmed by V_{ADIM_MIN} and V_{ADIM_MAX} specifications and typical performance curves.