Monolithic Power Systems Inc. MP62341DH-1-LF

Overview

MP62341DH-1-LF from Monolithic Power Systems is a dual-channel, active-high enable, current-limited power distribution switch with 1A continuous per channel, 80mΩ R_DS(on), and integrated thermal shutdown, over-current, and under-voltage lockout protection. It operates from 2.7V to 5.5V input and delivers precise 1.5A typical short-circuit current limiting for USB power distribution and hot-swap applications in portable computing systems.

For engineers reviewing the MP62341DH-1-LF datasheet, MP62341DH-1-LF pinout, MP62341DH-1-LF application, or MP62341DH-1-LF equivalent, key selection criteria include guaranteed 1A continuous load rating per channel, 8ms FLAG deglitch time to suppress false fault reporting, reverse current blocking capability, and MSOP8E package with exposed thermal pad for high-power-density board layouts.

Technical Context

The MP62341DH-1-LF integrates two independent N-channel MOSFET power switches with matched current-limit circuitry, each featuring a precision trip threshold (1.6–2.4A) and constant-current regulation during overload. Its UVLO triggers at 1.95–2.65V rising edge with 250mV hysteresis, ensuring clean startup under marginal supply conditions.

Thermal protection activates at 140°C junction temperature with 20°C hysteresis, and recovery occurs autonomously once die temperature falls to ~120°C. The open-drain FLAG pins provide asynchronous, deglitched fault indication per channel, eliminating external RC filtering requirements.

Key Specifications

Pinout & Package

MP62341DH-1-LF is housed in an 8-pin MSOP package with exposed thermal pad (MSOP8E), requiring connection of the pad to PCB ground plane for optimal thermal performance (θ_JA = 55°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel current-limited power distribution switch applications.

Compared with TPL92012DRVR and TPS22965DRLR, MP62341DH-1-LF uniquely combines dual-channel integration, 8ms deglitched fault reporting, thermal shutdown with hysteresis, and guaranteed 1A continuous rating in a thermally optimized MSOP8E package - making it optimal for space-constrained, safety-critical USB and hot-swap applications.

Availability

MP62341DH-1-LF is available at Aetrix Electronics and suitable for USB power distribution, PC card hot swap, notebook PC power management, and telecom line card protection requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP62341DH-1-LF 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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP6234x product line targets compact, intelligent power distribution in portable and embedded systems, emphasizing integrated protection, minimal external components, and thermal resilience in small-outline packages.

FAQ

What is the difference between MP62340DH and MP62341DH?

MP62340DH uses active-low enable logic (EN1*/EN2*), while MP62341DH uses active-high enable (EN1/EN2). Both share identical current-limiting, thermal, and electrical specifications. The -1 suffix denotes active-high control, critical for direct GPIO interfacing without level-shifting.

Does MP62341DH-1-LF require external components for basic operation?

Yes - a minimum 10μF ceramic capacitor between IN and GND is required for stability and transient suppression. Each OUT pin benefits from local bulk capacitance (e.g., 100μF electrolytic) for heavy loads. No external current-sense or flag-filtering components are needed due to integrated deglitch and open-drain FLAG architecture.

Can MP62341DH-1-LF drive capacitive loads up to 1000μF?

It can safely charge up to 1000μF loads, but turn-on time increases linearly with capacitance (e.g., 3ms for 100μF, ~30ms for 1000μF). For such loads, verify that inrush current remains below 1.5A typical trip threshold and that thermal limits are not exceeded during repeated hot-plug cycles.

Is reverse current blocking effective at 2.7V input?

Yes - reverse current blocking is implemented via internal MOSFET body diode control and remains fully functional across the entire 2.7–5.5V input range, preventing backfeed from powered outputs into disabled channels regardless of input voltage level.

How does the 8ms FLAG deglitch interact with thermal shutdown?

The 8ms deglitch applies only to over-current faults. During thermal shutdown, FLAG asserts immediately without deglitch delay, providing fastest possible response to die overheating - ensuring critical thermal events are never masked by timing filters.

What is the maximum allowable power dissipation in MSOP8E at +70°C ambient?

Using θ_JA = 55°C/W and T_J(MAX) = 150°C, maximum continuous power dissipation is (150 − 70)/55 ≈ 1.45W. At 1A per channel and 80mΩ R_DS(on), total conduction loss is 160mW - well within thermal margin, assuming proper exposed pad soldering.