Monolithic Power Systems Inc. MP62260DS-LF-P

Overview

MP62260DS-LF-P from Monolithic Power Systems is a single-channel, active-low enable, current-limited power distribution switch with 2A continuous load capability, 3A typical current limit, and integrated thermal shutdown and under-voltage lockout. It features a 50mΩ internal MOSFET, 90μA quiescent current, and reverse current blocking-designed for USB power distribution and hot-swap protection in portable electronics.

For engineers reviewing the MP62260DS-LF-P datasheet, MP62260DS-LF-P pinout, MP62260DS-LF-P application, or MP62260DS-LF-P equivalent, key selection criteria include its SOIC8 package, active-low EN logic, open-drain FLAG reporting with 8ms deglitch, and precise 2.7V–5.5V input voltage range compatibility with 3.3V/5V VBUS systems.

Technical Context

The MP62260DS-LF-P implements a current-limiting architecture that transitions into constant-current mode upon exceeding the 2.3–4.3A trip threshold, preventing fault propagation while maintaining output regulation. Its internal charge pump enables full gate drive across the 2.7V–5.5V input range, ensuring consistent 50mΩ R_DS(on) performance.

Thermal shutdown activates at 140°C with 20°C hysteresis, and UVLO engages at 1.95–2.65V rising edge to prevent erratic operation during brownout. The open-drain FLAG pin asserts low after 4–15ms deglitch delay only during over-current events-not during thermal or UVLO faults-enabling reliable system-level fault isolation.

Key Specifications

Pinout & Package

MP62260DS-LF-P is housed in an industry-standard SOIC8 package (5.0mm × 6.2mm, 1.27mm pitch) with exposed pad for enhanced thermal performance. Pin 1 is marked with a dot; pins 6–8 are internally bonded to OUT for high-current routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS2051BDBVR and NCP45520MUTBG, MP62260DS-LF-P delivers superior integration with reverse current blocking, lower quiescent current, and guaranteed 8ms FLAG deglitch-making it optimal for space-constrained, battery-sensitive USB power management where fault fidelity and bidirectional isolation are critical.

Availability

MP62260DS-LF-P is available at Aetrix Electronics and suitable for USB power distribution, PC Card hot swap, and smartphone peripheral charging applications requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP62260DS-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 MP62260/MP62261 product line targets compact, high-reliability power distribution in portable and interface-constrained systems-emphasizing low IQ, precise current limiting, and fault resilience without external components.

FAQ

What is the logic polarity of the EN pin on MP62260DS-LF-P?

The EN pin on MP62260DS-LF-P is active-low: the device enables power delivery when EN is pulled to logic low (≤0.8V), and disables with EN ≥2V. This matches the "DS" suffix designation per MPS ordering table and differs from the MP62261's active-high EN configuration.

Does MP62260DS-LF-P support reverse current flow from OUT to IN?

Yes-MP62260DS-LF-P integrates reverse current blocking. When disabled or during input dropout, it prevents current from flowing backward from the loaded OUT node into the IN rail, eliminating the need for an external series diode in battery-backup or multi-source systems.

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

The FLAG pin asserts low only during over-current events after its 4–15ms deglitch timeout. It remains inactive (high-impedance) during thermal shutdown or under-voltage lockout-ensuring fault signals are unambiguous and tied exclusively to current-fault conditions.

What is the maximum allowable continuous power dissipation for MP62260DS-LF-P at +25°C ambient?

At +25°C ambient, MP62260DS-LF-P in SOIC8 has a θ_JA of 90°C/W and a maximum junction temperature of 150°C, yielding a maximum continuous power dissipation of 1.39W. Derating is required above +25°C using PD_MAX = (150 – T_A) / 90.

Can MP62260DS-LF-P be used with 2.7V input for low-power IoT sensor nodes?

Yes-MP62260DS-LF-P operates down to 2.7V input and draws only 90μA quiescent current when enabled, making it suitable for 2.7–3.6V battery-powered IoT nodes where regulated 3.3V distribution to sensors or radios is required with fault containment.

Is an input capacitor required, and what value is recommended?

Yes-an input capacitor ≥10μF ceramic (X5R/X7R) between IN and GND is mandatory per MPS application guidance. It suppresses input transients, improves immunity to short-circuit ringing, and stabilizes the internal charge pump during load steps.

What is the typical turn-on time from EN assertion to 90% V_OUT?

At VIN = 5V, CL = 100μF, and RL = 5Ω, the typical turn-on time (Ton) is 1.6ms-measured from 50% EN transition to 90% V_OUT. This ensures controlled power ramp-up to avoid inrush-induced voltage droop on shared supply rails.