Monolithic Power Systems Inc. MP5410EQ-LF-P

Overview

MP5410EQ-LF-P from Monolithic Power Systems is a current-mode boost converter with integrated 0.65Ω N-Channel MOSFET, four SPDT analog switches, and fixed 10V output capability. It starts up from 1.8V input, delivers >80% efficiency at light loads, supports dual-cell NiCd/NiMH or single-cell Li+ battery biasing for 3D glass drivers and small LCD displays.

For engineers reviewing the MP5410EQ-LF-P datasheet, MP5410EQ-LF-P pinout, MP5410EQ-LF-P application, or MP5410EQ-LF-P equivalent, key selection criteria include low-startup-voltage operation, integrated Schottky diode, SPDT switch on-resistance matching (≤10Ω), and QFN16 thermal performance with exposed pad grounding.

Technical Context

The MP5410EQ-LF-P implements variable-frequency, constant-peak-current control to optimize efficiency across 1.8–5.5V input while maintaining regulation via internal 1.23V reference and FB feedback. Its architecture integrates a disconnect switch between IN and L pins using parallel NMOS/PMOS for full load isolation during shutdown.

All four SPDT switches (A–D) are independently controlled by logic-level S0–S3 inputs with <80ns turn-on and <170ns turn-off times at 300Ω/35pF load. Switch on-resistance is 25–50Ω at VOUT=10V and 2mA per channel, with ≤10Ω matching between channels.

Key Specifications

Pinout & Package

MP5410EQ-LF-P is housed in a thermally enhanced 3×3mm QFN16 package with exposed thermal pad (to be connected to GND plane). Pin 1 ID is marked with "ABAY" top marking; exposed pad must be soldered to PCB ground for θJA = 60°C/W performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar boost converter with integrated analog switch applications.

Compared with TPS610992RTER and MAX17222ETA+, MP5410EQ-LF-P uniquely combines ultra-low 1.8V startup, four matched SPDTs, and integrated Schottky diode in a 3×3mm QFN-enabling single-chip bias solutions for compact 3D glass and segmented LCD systems where discrete integration would exceed area or leakage budgets.

Availability

MP5410EQ-LF-P is available at Aetrix Electronics and suitable for 3D glass driver modules, small LCD display bias supplies, digital still camera sensor biasing, and handheld PDA display subsystems requiring stable component supply across extended production lifecycles.

Supply support for MP5410EQ-LF-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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The MP5410 belongs to MPS's low-voltage boost converter product line, designed specifically for space-constrained portable electronics requiring integrated bias generation and analog signal routing from single-cell batteries.

FAQ

What is the minimum input voltage required for MP5410EQ-LF-P to start switching?

The MP5410EQ-LF-P guarantees startup at 1.8V input under all operating conditions, verified per datasheet Rev.1.01 Section 3 (Electrical Characteristics). This is enabled by optimized bandgap reference and low-threshold internal MOSFET drive circuitry, making it suitable for deeply discharged NiMH or aging Li+ cells.

Can the output voltage be adjusted above or below 10V?

Yes - the 10V output is fixed only when the FB pin is left floating. Connecting an external resistive divider from OUT to FB allows precise adjustment using VOUT = VFB × (R1/R2 + 1), where VFB = 1.23V. Standard values R1 = 178kΩ and R2 = 24.9kΩ yield exactly 10V.

How does the MP5410EQ-LF-P achieve load disconnection during shutdown?

It uses an internal series disconnect switch between IN and L pins composed of parallel NMOS and PMOS transistors. When EN is pulled LOW, both transistors turn OFF, isolating all downstream loads (including SPDT outputs A–D and OUT rail) from the input supply, limiting leakage to <1µA.

What is the maximum continuous output current capability?

The MP5410EQ-LF-P is not rated for continuous high-current output. Its 180mA typical SW current limit (set by ISET resistor) and 0.65Ω RDS(ON) define peak inductor current, not steady-state load current. For 10V output, practical continuous load is ~20–30mA depending on VIN, efficiency, and thermal design.

Is the exposed thermal pad electrically connected internally?

Yes - the exposed pad is internally connected to GND. Per datasheet Package Information (page 12), it must be soldered to a PCB GND plane to achieve specified θJA = 60°C/W and ensure safe thermal operation at full load. Failure to connect it degrades thermal performance and risks thermal shutdown.

Do the SPDT switches operate independently of the boost converter?

No - the SPDT switches require EN = HIGH and a valid OUT voltage. When EN is LOW or OUT has not reached regulation threshold (~7V), the switches remain open (high-impedance). The NMOS disconnect switch only turns ON once OUT reaches sufficient voltage to drive its gate, ensuring proper sequencing.

What is the recommended inductor value for typical 10V/2mA operation?

For VIN = 2.4V, VOUT = 10V, and IOUT = 2mA, the datasheet Typical Application Circuit (page 11) specifies a 10µH inductor with 150mΩ DCR. Inductor saturation current should exceed 40% above peak switch current (≈180mA), so ≥250mA Isat rating is recommended.