Monolithic Power Systems Inc. MP62341DH-1-LF-P

Overview

MP62341DH-1-LF-P from Monolithic Power Systems is a dual-channel, current-limited power distribution switch with active-low enable inputs, 1A continuous per channel, 85mΩ R_DS(on), and integrated output discharge (100Ω path). It operates from 2.7V to 5.5V input and delivers precise current limiting (1.1–2.2A trip range) with thermal shutdown and UVLO protection - deployed in USB power distribution and hot-swap circuits for notebook PCs and telecom systems.

For engineers reviewing the MP62341DH-1-LF-P datasheet, MP62341DH-1-LF-P pinout, MP62341DH-1-LF-P application, or MP62341DH-1-LF-P equivalent, key selection criteria include guaranteed 1A current limit accuracy, dual independent FLAG outputs with 8ms deglitch, reverse current blocking, and SOIC8 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The MP62341DH-1-LF-P integrates two independent N-channel MOSFET power switches with matched current-limit circuitry, each featuring internal charge-pump gate drive and thermal sensing. Its constant-current mode activates at ≥1.7A (typ.) under fast-ramp overload, transitioning to thermal shutdown only if junction temperature exceeds 140°C.

Each channel includes dedicated open-drain FLAG pins with deglitched fault reporting, UVLO monitoring on IN (1.95–2.65V rising threshold), and output discharge enabled during disable or UVLO. The device supports reverse current blocking and exhibits <1μA shutdown current with no external components required for flag debouncing.

Key Specifications

Pinout & Package

MP62341DH-1-LF-P is housed in an 8-pin SOIC package without exposed pad, compliant with JEDEC MS-012 AA. Pin spacing is 1.27mm, body dimensions 4.90 × 3.90 × 1.75mm (L × W × H), and lead finish is lead-free (LF).

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 TPL92012RGER and TPS22965DRLR, MP62341DH-1-LF-P uniquely combines dual independent FLAG reporting, integrated 100Ω discharge, and thermal shutdown with hysteresis - making it the only option among the three qualified for USB-compliant hot-swap and telecom line-card protection without external components.

Availability

MP62341DH-1-LF-P is available at Aetrix Electronics and suitable for USB power distribution, notebook PC auxiliary rail management, and telecom line card protection requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MP62341DH-1-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, LED drivers, and power distribution solutions.

The MP623xx family targets compact, reliable power sequencing and protection in portable and infrastructure equipment - designed specifically for USB, computing, and telecom applications demanding integrated fault management and minimal external components.

FAQ

What is the maximum allowable input voltage for MP62341DH-1-LF-P?

The absolute maximum input voltage (IN) is +6.0V, but the recommended operating range is 2.7V to 5.5V. Operation above 5.5V risks permanent damage, and operation below 2.7V triggers under-voltage lockout, disabling both channels until voltage rises above 1.95V (rising threshold).

Does MP62341DH-1-LF-P support independent current limiting per channel?

Yes - each channel has its own current-sense amplifier and trip circuit. The typical trip current is 1.7A with a guaranteed range of 1.1–2.2A per channel, and thermal shutdown is shared but triggered independently based on total die temperature.

How does the output discharge function operate?

The 100Ω internal discharge path connects OUTx to GND when ENx* is high (disabled) or when IN falls below UVLO threshold. It actively discharges external capacitors - e.g., 1μF discharges to <10% in <1ms - eliminating need for external resistors in hot-swap designs.

Can FLAG1 and FLAG2 be tied together for combined fault reporting?

No - FLAG1 and FLAG2 are open-drain outputs with independent internal logic. Tying them risks contention during mismatched fault events and violates datasheet recommendations. Each requires its own pull-up resistor and dedicated host GPIO for accurate per-channel diagnostics.

Is MP62341DH-1-LF-P RoHS compliant and halogen-free?

Yes - the "-LF" suffix confirms lead-free termination and full compliance with RoHS Directive 2011/65/EU. MPS certifies all MP623xx devices as halogen-free per IEC 61249-2-21, with no brominated flame retardants or chlorine-based compounds in packaging or die attach.

What is the thermal resistance (θ_JA) for the SOIC8 package?

The junction-to-ambient thermal resistance is 90°C/W on a standard 4-layer JEDEC PCB (JESD51-7). This value assumes 1 in² copper area per layer and defines maximum continuous power dissipation: PD_MAX = (150°C – T_A) / 90°C/W.

Does MP62341DH-1-LF-P provide reverse current protection during disable?

Yes - reverse leakage current is specified at ≤0.2μA when V_OUT = 5.5V and V_IN = GND. This is achieved via internal MOSFET body-diode blocking and gate control, ensuring no backfeed from powered loads into the input rail.