Monolithic Power Systems Inc. MP2410AGJ-P

Overview

MP2410AGJ-P from Monolithic Power Systems is a 24V, 2A, 1MHz synchronous step-down white LED driver with integrated high-side MOSFET (100mΩ) and low-side synchronous rectifier (80mΩ), operating across 4.2V–24V input and delivering precise constant-current output for high-brightness LED strings in portable lighting and IR illumination systems.

For engineers reviewing the MP2410AGJ-P datasheet, MP2410AGJ-P pinout, MP2410AGJ-P application, or MP2410AGJ-P equivalent, this device supports dual analog/PWM dimming on a single EN/DIM pin, features NTC-based thermal derating, open-LED and short-circuit protection, and targets designs requiring stable current regulation under wide input and temperature ranges (-40°C to +125°C).

Technical Context

The MP2410AGJ-P implements fixed-frequency (1MHz) peak current mode control with internal error amplifier referencing a precision 100mV FB threshold, enabling fast transient response and simplified loop compensation. Its architecture integrates both power switches and bootstrap gate drive circuitry, eliminating external high-side drivers.

It combines three independent protection mechanisms: cycle-by-cycle current limiting (5.5A typical OCP threshold), NTC-based ambient temperature monitoring (with programmable hysteresis), and thermal shutdown at 150°C with 60°C hysteresis - all coordinated via an auto-restart hiccup timer (2.4ms).

Key Specifications

Pinout & Package

MP2410AGJ-P is packaged in TSOT23-6, a 6-pin, 1.6mm × 2.9mm surface-mount package with exposed thermal pad (GND-connected). Pin 1 is marked by a dot; pin numbering follows standard TSOT23 orientation (pin 1 = lower-left when top marking is read left-to-right).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver applications.

Compared with MPQ2410AGJ-P, the MP2410AGJ-P omits automotive qualification but retains identical performance and footprint for cost-sensitive industrial designs; versus LT3466-1, it delivers higher current, synchronous efficiency, and integrated thermal/dimming features - reducing component count and design risk.

Availability

MP2410AGJ-P is available at Aetrix Electronics and suitable for infrared illumination systems, portable flashlights, handheld computer backlights, and industrial status indicator panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2410AGJ-P 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 over two decades of expertise in DC/DC conversion, LED drivers, and motor control solutions.

The MP2410A product line targets compact, high-efficiency LED lighting applications requiring integrated power switches, multi-mode dimming, and comprehensive fault protection - optimized for space-constrained portable and industrial systems.

FAQ

What is the minimum input voltage required to start up the MP2410AGJ-P?

The MP2410AGJ-P has a UVLO turn-on threshold of 3.5V to 4.0V (typical 3.7V) on VIN, with 0.12V hysteresis. Startup occurs only when both VIN exceeds this threshold and EN/DIM voltage rises above 0.545V. Below 3.5V, the IC remains in shutdown with 10μA quiescent current.

Can the MP2410AGJ-P drive multiple parallel LED strings?

Yes - it can regulate current in multiple parallel strings using individual sense resistors tied to a common FB node, provided total output current does not exceed 2A and thermal limits are observed. Layout must ensure matched trace impedance to each sense resistor to maintain current balance.

How does the NTC thermal protection function without external components?

The MP2410AGJ-P provides a 58μA (typ) current source on the NTC pin. When an NTC thermistor is connected from NTC to GND, its resistance drop with rising temperature lowers the NTC pin voltage. At 0.82V (low threshold), current begins scaling down; at 0.41V (shutdown threshold), switching halts completely.

Is the BST capacitor value critical, and what type is recommended?

Yes - a 0.1μF X7R or X5R ceramic capacitor rated ≥10V must be placed directly between BST and SW pins. This capacitor sustains the floating gate drive voltage for the high-side MOSFET; insufficient capacitance causes gate underdrive, increased R_DS(ON), and thermal runaway.

Does the MP2410AGJ-P support spread-spectrum frequency modulation?

No - it operates at a fixed 1MHz switching frequency with ±20% tolerance (0.8–1.2MHz). It does not include spread-spectrum or frequency dithering features. EMI reduction relies on clean layout, proper input/output capacitors, and the inherent low-noise profile of synchronous buck topology.

What happens during an open-LED fault condition?

When no current flows through the sense resistor, FB voltage drops below 5mV. The controller responds by forcing maximum duty cycle (94%), causing output voltage to rise toward VIN. Internal circuitry disables switching if FB remains low for >100ms, entering latch-off state until EN/DIM is cycled.

Can the MP2410AGJ-P be used in boost or SEPIC configurations?

No - it is designed exclusively as a synchronous step-down (buck) LED driver with integrated high-side and low-side switches. The internal topology, gate drive architecture, and protection logic are incompatible with boost, flyback, or SEPIC topologies; external reconfiguration is not supported.