Monolithic Power Systems Inc. MP62341DS-1-LF-P

Overview

MP62341DS-1-LF-P from Monolithic Power Systems is a dual-channel, active-high enable, current-limited power distribution switch with 1A continuous per channel, 85mΩ R_DS(on), output discharge, and thermal shutdown protection. It operates from 2.7V to 5.5V input and delivers precise current limiting (1.1–2.2A trip range) for USB power distribution and hot-swap applications in notebook PCs and telecom systems.

For engineers reviewing the MP62341DS-1-LF-P datasheet, MP62341DS-1-LF-P pinout, MP62341DS-1-LF-P application, or MP62341DS-1-LF-P equivalent, key selection criteria include guaranteed 1A per channel current limit, active-high EN1/EN2 logic, SOIC8 package with no exposed pad, 8ms FLAG deglitch time, and integrated reverse-current blocking-critical for reliable load switching in portable and embedded systems.

Technical Context

The MP62341DS-1-LF-P integrates two independent N-channel MOSFET power switches with matched current-limit circuitry, UVLO (1.95–2.65V rising edge), and open-drain FLAG outputs with 8ms deglitching. Each channel features independent enable control and over-current detection that transitions into constant-current mode before thermal shutdown at 140°C.

Its internal charge pump ensures stable gate drive across the full 2.7–5.5V input range, while the 100Ω internal discharge path actively bleeds output capacitance when disabled-eliminating external discharge components and reducing system-level inrush transients during hot-plug events.

Key Specifications

Pinout & Package

MP62341DS-1-LF-P is housed in an 8-pin SOIC package (no exposed pad), optimized for surface-mount assembly and thermal performance up to 1.4W at +25°C ambient. The package complies with JEDEC MS-012, AA variation and supports standard reflow profiles.

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, MP62341DS-1-LF-P uniquely combines dual-channel active-high control, integrated output discharge, and self-recovering thermal shutdown-enabling compact, robust, and maintenance-free power switching in space-constrained portable and telecom equipment.

Availability

MP62341DS-1-LF-P is available at Aetrix Electronics and suitable for USB power distribution, notebook PC peripheral switching, telecom line card protection, and set-top box power management requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP62341DS-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP6234x-1 product line delivers highly integrated, thermally robust power distribution switches for portable, computing, and communications equipment-designed to replace discrete FET+controller solutions with minimal external components and guaranteed fault recovery.

FAQ

What is the logic polarity of EN1 and EN2 on MP62341DS-1-LF-P?

EN1 and EN2 are active-high inputs. When voltage on either pin rises above 2.0V (min), the corresponding channel turns ON. This differs from the MP62340-1 variant, which uses active-low enables. No external inverters are needed for direct microcontroller GPIO interfacing.

Does MP62341DS-1-LF-P support reverse current blocking during disable?

Yes. The device incorporates inherent reverse-current blocking between OUT and IN pins when disabled or during input undervoltage. This prevents backfeed from powered loads into the main supply rail-a critical feature for multi-source systems like USB OTG or battery-backed peripherals.

How does the FLAG pin behave during thermal shutdown versus over-current events?

The FLAG pin asserts low after an 8ms deglitch timeout for both over-current and thermal shutdown events. However, it is not deglitched during UVLO or thermal hysteresis recovery-allowing immediate fault indication upon entry into thermal limit and clean deassertion once junction temperature falls below 120°C.

What is the maximum allowable output capacitance for stable operation?

The device supports up to 470μF output capacitance without oscillation or startup failure, as verified in typical performance curves. For capacitors >100μF, turn-off delay increases linearly due to discharge time constant (R_DISCH × C_OUT), but remains within specification up to 470μF with 100Ω internal discharge resistance.

Can MP62341DS-1-LF-P operate reliably at 2.7V input with 1A load?

Yes. At VIN = 2.7V and TA = +25°C, R_DS(on) remains ≤130mΩ (max), resulting in <130mV dropout at 1A. The current limit remains functional down to 2.7V, and UVLO hysteresis ensures clean enable/disable transitions even near the lower rail limit.

Is the SOIC8 package of MP62341DS-1-LF-P lead-free and RoHS compliant?

Yes. The "-LF" suffix explicitly denotes lead-free, RoHS-compliant construction. The device meets EU RoHS Directive 2011/65/EU and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE-verified per MPS Quality Assurance documentation.

What is the thermal resistance θ_JA for the SOIC8 package under standard JEDEC 4-layer PCB conditions?

The junction-to-ambient thermal resistance (θ_JA) is 90°C/W when mounted on a standard 4-layer JEDEC test board (JESD51-7). This value assumes proper copper pour on inner layers and is used to calculate maximum continuous power dissipation: PD_MAX = (150°C − TA)/90°C/W.