Monolithic Power Systems Inc. MP62350ES-LF-P

Overview

MP62350ES-LF-P from Monolithic Power Systems is a dual-channel, active-low, current-limited power distribution switch with 500mA continuous per channel, 85mΩ R_DS(on), and integrated output discharge (100Ω). It operates from 2.7V to 5.5V input and delivers overcurrent protection via constant-current limiting and thermal shutdown (140°C trip, 20°C hysteresis), used in USB power distribution and PC card hot-swap circuits.

For engineers reviewing the MP62350ES-LF-P datasheet, MP62350ES-LF-P pinout, MP62350ES-LF-P application, or MP62350ES-LF-P equivalent, key selection criteria include guaranteed 550–1100mA current limit accuracy, dual independent enable/flag signaling, reverse current blocking, and SOIC8 package thermal performance (θ_JA = 90°C/W).

Technical Context

The MP62350ES-LF-P implements two independent N-channel MOSFET switches with matched current-limit thresholds (typ. 750mA short-circuit, min. 550mA continuous) and separate open-drain FLAG outputs for per-channel fault reporting. Its internal UVLO (1.95–2.65V rising edge) prevents operation below valid supply voltage.

Each channel features active-low EN control, 8ms deglitched FLAG assertion (no glitch during power-up), and automatic thermal recovery at ~120°C. The 100Ω internal discharge path discharges external output capacitors upon disable, eliminating need for external resistors in portable load-switching applications.

Key Specifications

Pinout & Package

MP62350ES-LF-P is housed in an 8-pin SOIC package (body size 4.9mm × 3.9mm, 1.27mm pitch), rated for –20°C to +85°C ambient operation and offering θ_JA = 90°C/W on standard 4-layer PCB.

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 MP62350ES-LF-P, MP5095DJ-LF-Z offers superior current capacity and efficiency but sacrifices dual-channel autonomy and integrated discharge; TPS22965DCKR provides wider voltage support and lower conduction loss but omits critical protections required in unattended portable systems.

Availability

MP62350ES-LF-P is available at Aetrix Electronics and suitable for USB power distribution, PC card hot swap, and notebook PC subsystem power management requiring stable component supply and legacy design continuity.

Supply support for MP62350ES-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, headquartered in California and serving global industrial, computing, and consumer markets.

The MP62350/MP62351 product line was designed for reliable, compact load switching in space-constrained portable electronics where per-channel fault visibility and safe output discharge are mandatory.

FAQ

What is the logic polarity of EN1 and EN2 on MP62350ES-LF-P?

EN1 and EN2 are active-low inputs: the corresponding channel turns ON when the pin voltage is ≤0.8V (logic low) and turns OFF when ≥2.0V (logic high). This matches the "Active Low" designation in the ordering table and differs from the MP62351 variant, which uses active-high enables.

Does MP62350ES-LF-P support reverse current blocking during disable?

Yes - the device incorporates intrinsic reverse current blocking. When disabled (ENx high), it prevents current flow from OUTx back to IN, even if OUTx is held at a higher voltage than IN. Measured reverse leakage is ≤0.2μA at OUTx = 5.5V and IN = 0V.

How does the FLAG pin behave during thermal shutdown versus overcurrent events?

The FLAG pin asserts low after an 8ms deglitch timeout for overcurrent conditions, but reports thermal faults immediately without deglitching. This ensures rapid response to die overheating while filtering transient current surges that may not indicate sustained fault conditions.

What is the maximum recommended output capacitance for stable turn-on without oscillation?

The datasheet specifies stable operation with up to 100μF output capacitance (CL = 100μF, RL = 11Ω), yielding 3ms turn-on time. Larger capacitors may extend rise time but do not induce instability; however, output discharge time increases linearly with capacitance due to fixed 100Ω discharge resistance.

Is MP62350ES-LF-P RoHS compliant and halogen-free?

Yes - the "-LF" suffix explicitly denotes lead-free and RoHS-compliant packaging. Monolithic Power Systems confirms full compliance with EU RoHS Directive 2011/65/EU and JEDEC JS709C halogen-free requirements for this part number.

Can MP62350ES-LF-P be used with a 2.5V input supply?

No - the absolute minimum operating input voltage is 2.7V per the datasheet's "IN Voltage Range" specification (2.7V to 5.5V). At 2.5V, UVLO will hold the device in shutdown, and FET conduction cannot be guaranteed due to insufficient gate drive margin.

What is the thermal resistance (θ_JA) of MP62350ES-LF-P in SOIC8 package?

The SOIC8 package has θ_JA = 90°C/W when mounted on a standard 4-layer JEDEC PCB (JESD51-7). This value assumes 2 oz copper, 1-in² copper pour under the exposed pad (if present) - though SOIC8 lacks an exposed pad, so thermal performance relies on leadframe conduction and top-side convection.