Monolithic Power Systems Inc. MP62340DS-1-LF-P

Overview

MP62340DS-1-LF-P from Monolithic Power Systems is a dual-channel, active-low current-limited power distribution switch with 1A continuous per channel, 85mΩ R_DS(ON), and integrated output discharge (100Ω path). It operates from 2.7V to 5.5V input and delivers precise overcurrent protection (1.1–2.2A trip range) and thermal shutdown (140°C) for USB and hot-swap load switching in notebook PCs and telecom systems.

For engineers reviewing the MP62340DS-1-LF-P datasheet, MP62340DS-1-LF-P pinout, MP62340DS-1-LF-P application, or MP62340DS-1-LF-P equivalent, key selection criteria include guaranteed 1A current limit accuracy, dual independent enable/flag signaling, SOIC8 package thermal performance (θ_JA = 90°C/W), and reverse-current blocking capability under fault conditions.

Technical Context

The MP62340DS-1-LF-P integrates two independent high-side MOSFET switches with matched current-limit circuitry, UVLO (2.65V rising threshold), and 8ms deglitched open-drain FLAG outputs per channel. Each channel features separate EN* inputs and dedicated current-sense amplifiers feeding a shared thermal protection block.

Its internal charge pump enables full enhancement of the N-channel MOSFETs across the 2.7–5.5V input range, while the output discharge function activates only when both EN* is deasserted and VIN drops below UVLO - ensuring safe capacitive load discharge without compromising startup integrity.

Key Specifications

Pinout & Package

MP62340DS-1-LF-P is housed in an 8-pin SOIC package without exposed pad (JEDEC MS-012 AA), measuring 4.90 × 3.90 × 1.75 mm. Thermal resistance 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 TPS2051BDR and NCP45561MUTBG, MP62340DS-1-LF-P uniquely combines dual independent enable/flag control, guaranteed 1A current limit accuracy, integrated 100Ω discharge, and 8ms deglitched fault reporting - making it optimal for USB-compliant, thermally constrained, and hot-swap-critical designs.

Availability

MP62340DS-1-LF-P is available at Aetrix Electronics and suitable for USB power distribution, notebook PC peripheral rail management, and telecom line card hot-swap applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP62340DS-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 mixed-signal ICs for power management, motion control, and automotive applications.

The MP62340 product line targets compact, thermally efficient power distribution in portable and embedded systems - emphasizing accurate current limiting, fault resilience, and minimal external component count for USB, computing, and telecom infrastructure.

FAQ

What is the maximum allowable input voltage for MP62340DS-1-LF-P?

The absolute maximum input voltage (IN) is +6.0V, but the recommended operating range is 2.7V to 5.5V. Operation above 5.5V risks permanent damage and voids reliability guarantees. The device includes under-voltage lockout (UVLO) that disables switching below 1.95V (rising edge) to prevent unstable operation.

Does MP62340DS-1-LF-P support reverse current blocking?

Yes - it blocks reverse current with ≤0.2μA leakage when VIN = GND and VOUT = 5.5V. This feature prevents backfeed from powered loads into the host supply, which is essential for hot-swap safety and USB compliance in bidirectional power domains.

How does the output discharge function operate?

The 100Ω internal discharge path activates only when the device is disabled (EN1*/EN2* high) AND input voltage falls below UVLO threshold. It does not engage during normal turn-off with valid VIN, ensuring output remains stable during controlled shutdown sequences.

Can FLAG1 and FLAG2 be tied together for combined fault indication?

No - FLAG1 and FLAG2 are open-drain outputs with independent internal fault detection. Tying them risks masking individual channel faults and violates the recommended usage in the datasheet. Each FLAG requires its own pull-up resistor and dedicated interrupt line for reliable diagnostics.

What is the thermal shutdown recovery behavior?

After thermal shutdown at 140°C, the device remains off until junction temperature cools to approximately 120°C (20°C hysteresis). Recovery is automatic and does not require cycling EN* or VIN - enabling hands-free resumption once thermal stress subsides.

Is MP62340DS-1-LF-P compatible with 3.3V logic control signals?

Yes - EN1* and EN2* accept TTL/CMOS logic levels: logic low ≤0.8V (active), logic high ≥2.0V (inactive). With a 3.3V system, a direct connection is valid; no level-shifting is required for enable control.

What is the typical turn-on delay time?

Turn-on time (T_on) is 3ms typical, measured from 50% EN* transition to 90% V_OUT. This value holds for CL = 100μF and RL = 5.5Ω, representing realistic load conditions for USB or peripheral rail applications.