Monolithic Power Systems Inc. MP62341DS-LF-P

Overview

MP62341DS-LF-P from Monolithic Power Systems is a dual-channel, active-high current-limited power distribution switch with 1A continuous per channel, 80mΩ R_DS(on), and 2.7V–5.5V input range. It integrates thermal shutdown, under-voltage lockout, reverse current blocking, and open-drain FLAG outputs for fault reporting-designed for USB power distribution and hot-swap load control in portable computing and telecom systems.

For engineers reviewing the MP62341DS-LF-P datasheet, MP62341DS-LF-P pinout, MP62341DS-LF-P application, or MP62341DS-LF-P equivalent, key selection criteria include guaranteed 1.1–2.2A current limit accuracy, 8ms FLAG deglitch timing, SOIC-8 package thermal performance (θ_JA = 90°C/W), and active-high enable logic compatibility with USB controller interface signals.

Technical Context

The MP62341DS-LF-P implements dual independent current-limiting channels using internal MOSFETs with precision trip-point sensing and charge-pump gate drive. Each channel operates autonomously: over-current triggers constant-current mode (1.1–2.2A), then thermal shutdown at 140°C with 20°C hysteresis if sustained.

Its UVLO circuit activates at 1.95–2.65V rising edge with 250mV hysteresis, while FLAG pins provide open-drain fault signaling with 4–15ms deglitch filtering-ensuring immunity to transient load spikes without external RC components.

Key Specifications

Pinout & Package

MP62341DS-LF-P is housed in an 8-pin SOIC package without exposed pad (JEDEC MS-012 AA), optimized for surface-mount assembly and thermal dissipation up to 1.4W at +25°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL92012RGER and TPS22965DRLR, MP62341DS-LF-P uniquely combines dual-channel autonomy, integrated FLAG reporting with deglitching, and self-recovering thermal protection-reducing firmware dependency and PCB area in space-constrained portable designs.

Availability

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

Supply support for MP62341DS-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 mixed-signal ICs for power management, motion control, and automotive applications.

The MP6234x product line targets compact, reliable power distribution in portable and embedded systems-delivering integrated current limiting, thermal protection, and fault reporting in standard SOIC and MSOP packages.

FAQ

What is the maximum allowable input voltage for MP62341DS-LF-P?

The absolute maximum input voltage is +6.0V, but the recommended operating range is 2.7V to 5.5V. Operation above 5.5V risks permanent damage even for brief transients, and UVLO does not protect beyond this limit-external clamping is advised if input surges exceed specification.

Does MP62341DS-LF-P support simultaneous turn-on of both channels?

Yes-EN1 and EN2 are fully independent inputs. Driving both high simultaneously enables synchronized turn-on with matched timing (Ton = 3ms typical). No internal interlock or sequencing delay exists between channels, allowing coordinated or staggered activation per system requirements.

How does the FLAG pin behave during thermal shutdown?

During thermal shutdown, the corresponding FLAG pin asserts low immediately-without deglitch filtering-as thermal fault takes priority over current-limit events. The pin remains low until junction temperature falls below ~120°C, at which point the channel resumes normal operation and FLAG returns high after the 8ms deglitch timer expires.

Can MP62341DS-LF-P be used with 3.3V-only systems?

Yes-the 2.7V–5.5V input range fully covers 3.3V nominal rails. At 3.3V, R_DS(on) remains ≤130mΩ (over temperature), supporting 1A loads with ≤130mV dropout. EN logic thresholds (2.0V high, 0.8V low) are also compatible with 3.3V CMOS outputs without level shifting.

Is reverse current blocking active when the device is disabled?

Yes-reverse current blocking is inherent to the internal MOSFET structure and remains active whether the switch is enabled or disabled. When ENx is low, OUTx is disconnected from IN, and the body diode is reverse-biased, preventing current flow from OUTx back to IN-even under external bias conditions.

What is the thermal resistance (θ_JA) of the SOIC-8 package?

The SOIC-8 package has a junction-to-ambient thermal resistance of 90°C/W when mounted on a standard 4-layer PCB per JESD51-7. This value assumes proper copper pour on GND and minimal trace impedance; actual θ_JA may improve with enhanced heatsinking or degrade with poor layout.