Monolithic Power Systems Inc. MP62260DS-1-LF-P

Overview

MP62260DS-1-LF-P from Monolithic Power Systems is a single-channel, active-low current-limited power distribution switch with 45mΩ internal MOSFET, 2A continuous load capability, 3A typical current limit, and integrated output discharge function. It operates from 2.7V to 5.5V input and delivers precise over-current protection in smartphone power rail management.

For engineers reviewing the MP62260DS-1-LF-P datasheet, MP62260DS-1-LF-P pinout, MP62260DS-1-LF-P application, or MP62260DS-1-LF-P equivalent, key selection criteria include enable polarity (active-low), SOIC8 thermal performance (θJA = 90°C/W), FLAG deglitch timing (8ms), reverse current blocking, and UVLO threshold (2.3V typ).

Technical Context

The device implements a constant-current limiting architecture triggered at ≥3.3A trip current under fast-ramp conditions, entering thermal shutdown only if sustained overload exceeds package power dissipation limits (1.4W at TA=25°C). Its open-drain FLAG pin reports over-current after an 8ms deglitch window but remains unfiltered during UVLO or thermal events.

Output discharge is activated upon EN deassertion or VIN dropout, using a 100Ω internal path to safely bleed 1µF–470µF output capacitors within milliseconds. The 45mΩ R_DS(on) varies ±25% across –40°C to +85°C ambient, with under-voltage lockout hysteresis of 250mV ensuring clean startup sequencing.

Key Specifications

Pinout & Package

MP62260DS-1-LF-P is housed in an industry-standard SOIC8 package (5.0mm × 6.2mm × 1.75mm) with exposed pad not electrically connected. Thermal resistance θ_JA = 90°C/W on 4-layer JEDEC PCB per JESD51-7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22965DSGR and AP22653AW5-7, MP62260DS-1-LF-P uniquely combines active-low control, guaranteed 8ms FLAG deglitch, integrated 100Ω discharge, and documented thermal hysteresis-enabling robust hot-swap in space-constrained portable designs without external components.

Availability

MP62260DS-1-LF-P is available at Aetrix Electronics and suitable for smartphone power rail management, USB peripheral switching, notebook PC card slot protection, and telecom line card hot-swap requiring stable component supply across industrial temperature ranges.

Supply support for MP62260DS-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.

MP62260DS-1-LF-P belongs to MPS's Power Distribution Switch product line, engineered for fault-tolerant, low-footprint power gating in portable and communications equipment where reliability under transient overload is critical.

FAQ

What is the maximum continuous output current rating for MP62260DS-1-LF-P?

The MP62260DS-1-LF-P is rated for 2A continuous output current at TA = +25°C with proper PCB copper area. Derating is required above 25°C ambient: at +85°C, maximum continuous current drops to approximately 1.3A based on its 1.4W power dissipation limit and 90°C/W thermal resistance.

Does MP62260DS-1-LF-P provide reverse current blocking during disable?

Yes. When disabled (EN low), the internal MOSFET blocks reverse current flow from OUT to IN, measured at ≤0.2µA at VOUT = 5.5V and VIN = GND. This prevents backfeeding into upstream supplies during hot-swap or partial system power-down.

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

The FLAG pin asserts low after an 8ms deglitch timeout for over-current events only. During thermal shutdown or UVLO, FLAG is not deglitched and responds immediately-ensuring rapid system-level fault detection without delay when die temperature exceeds 140°C or input falls below 1.95V.

What is the purpose of the dual IN pins (pins 2 and 3) in the SOIC8 package?

Pins 2 and 3 are internally bonded to the same input node and serve to reduce package resistance and inductance. Using both pins in parallel lowers total IR drop and improves current handling-critical for maintaining <100mV drop at 2A and enhancing immunity to short-circuit transients.

Can MP62260DS-1-LF-P be used with input voltages below 2.7V?

No. The absolute minimum input voltage is 2.7V per specification; operation below this level triggers under-voltage lockout (UVLO), disabling the switch and preventing unpredictable behavior. The rising-edge UVLO threshold is 2.3V typ with 250mV hysteresis, ensuring clean re-enablement only after VIN rises above 2.55V.

Is the output discharge function active during under-voltage lockout?

Yes. Output discharge activates whenever the device is disabled-either by EN deassertion or by VIN dropping below the UVLO threshold (≤1.95V). The 100Ω internal path engages automatically, discharging external capacitors regardless of the disable cause.

What is the recommended minimum input capacitance for stable operation?

A minimum 10µF ceramic or tantalum capacitor between IN and GND is recommended. This reduces input supply transients and improves immunity to short-circuit-induced ringing, especially when driving high-capacitance loads (>100µF) on the output side.