Monolithic Power Systems Inc. MP62340DH-1-LF-P

Overview

MP62340DH-1-LF-P from Monolithic Power Systems is a dual-channel, current-limited power distribution switch with active-low enable inputs, 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) with thermal shutdown at 140°C - used in USB power rails and hot-swap interfaces for notebook PCs and telecom systems.

For engineers reviewing the MP62340DH-1-LF-P datasheet, MP62340DH-1-LF-P pinout, MP62340DH-1-LF-P application, or MP62340DH-1-LF-P equivalent, key selection criteria include guaranteed 1A current limit accuracy, dual independent FLAG outputs with 8ms deglitch, reverse current blocking, and SOIC8 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The MP62340DH-1-LF-P integrates two independent high-side MOSFET switches with matched current-limit circuitry, UVLO (1.95–2.65V rising edge), and thermal sensing with 20°C hysteresis. Each channel features open-drain FLAG outputs that assert after 8ms deglitch upon overcurrent or thermal fault - no external filtering required.

Its internal charge pump enables full enhancement of the N-channel MOSFETs across the 2.7–5.5V input range, while the 100Ω discharge path actively bleeds output capacitance when disabled. Reverse current blocking prevents backflow from OUT to IN under fault conditions, and EN1*/EN2* logic thresholds (V_IL ≤ 0.8V, V_IH ≥ 2V) support direct TTL/CMOS interfacing.

Key Specifications

Pinout & Package

MP62340DH-1-LF-P is housed in an 8-pin SOIC package (no exposed pad), compliant with JEDEC MS-012 AA, with 1.27mm pitch and 3.90–5.00mm body width. Pin 1 is marked by a notch or dot; device orientation follows standard SOIC top view.

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 NCP45563AMUTBG, MP62340DH-1-LF-P uniquely combines dual independent FLAG reporting, integrated discharge, and SOIC8 compatibility - making it optimal for space-constrained, diagnostics-aware USB and embedded peripheral power systems.

Availability

MP62340DH-1-LF-P is available at Aetrix Electronics and suitable for USB power distribution, notebook PC auxiliary rail control, and telecom line card protection requiring stable component supply across industrial temperature ranges and long-term production continuity.

Supply support for MP62340DH-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, and global manufacturing partnerships.

The MP62340 series belongs to MPS's power distribution switch product line, engineered specifically for reliable, low-footprint load switching in portable and infrastructure equipment where fault visibility and automatic recovery are critical.

FAQ

What is the maximum allowable input voltage for MP62340DH-1-LF-P?

The absolute maximum input voltage (IN to GND) 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 will not engage above the 2.65V upper threshold - so external clamping is advised if input surge exceeds spec.

Does MP62340DH-1-LF-P support simultaneous enable of both channels?

Yes - EN1* and EN2* operate independently; both can be asserted low simultaneously to activate OUT1 and OUT2. Supply current rises to 140–160μA (typical), and each channel maintains its own current limit and FLAG reporting without interaction.

How does the output discharge function behave during thermal shutdown?

Discharge remains active during thermal shutdown as long as IN voltage is present and EN1*/EN2* are deasserted. The 100Ω path continues bleeding the output capacitor until junction temperature falls below 120°C, at which point the device recovers and re-enables the channel if enable remains asserted.

Can FLAG1 and FLAG2 be wire-OR'd together?

No - FLAG pins are open-drain but electrically independent. Wire-OR'ing would mask individual channel faults. Each requires its own pull-up resistor (typically 10kΩ to 3.3V/5V) and dedicated MCU GPIO for accurate per-rail diagnostics.

Is MP62340DH-1-LF-P RoHS-compliant and lead-free?

Yes - the "-LF" suffix explicitly denotes lead-free, RoHS-compliant packaging. All solderable surfaces meet J-STD-609 Category 1 marking requirements, and the device is certified UL Recognized (E322138) for safety compliance.

What is the turn-off delay when disabling a channel?

Turn-off time (T_off) is 10ms typical (measured from 50% EN transition to 10% V_OUT), with output discharge active immediately upon EN deassertion. This ensures controlled ramp-down rather than abrupt collapse, reducing EMI and load upset.

Does the device block reverse current when only one channel is enabled?

Yes - reverse current blocking (≤0.2μA at V_OUT=5.5V, V_IN=GND) is inherent to each channel's MOSFET structure and operates regardless of the other channel's state. This isolates powered and unpowered rails in mixed-voltage systems.