Monolithic Power Systems Inc. MP62340DH-LF-P

Overview

MP62340DH-LF-P from Monolithic Power Systems is a dual-channel, current-limited power distribution switch with active-low enable logic, 80 mΩ R_DS(on), 1 A continuous per channel, and operation from 2.7 V to 5.5 V input. It integrates thermal shutdown, under-voltage lockout, reverse current blocking, and open-drain FLAG outputs for over-current detection-used in USB power distribution and hot-swap circuits where load protection and fault reporting are critical.

For engineers reviewing the MP62340DH-LF-P datasheet, MP62340DH-LF-P pinout, MP62340DH-LF-P application, or MP62340DH-LF-P equivalent, key selection criteria include guaranteed 1.1–2.2 A current limit accuracy, 8 ms FLAG deglitch timing, MSOP8E package thermal performance (θ_JA = 55 °C/W), and dual independent enable/flag signaling for isolated load control.

Technical Context

The MP62340DH-LF-P implements two independent N-channel MOSFET power switches with integrated current-sense amplifiers and thermal monitoring circuitry. Each channel operates in constant-current mode upon exceeding trip threshold (1.6–2.4 A), then transitions to thermal shutdown at ~140 °C junction temperature with 20 °C hysteresis.

Its UVLO activates below 1.95 V (rising edge) with 250 mV hysteresis, and EN inputs accept CMOS/TTL logic levels. The open-drain FLAG pins assert low after 8 ms deglitch delay only during over-current events-not during UVLO or thermal fault onset-ensuring robust false-trigger immunity in noisy systems.

Key Specifications

Pinout & Package

The MP62340DH-LF-P is housed in an 8-pin MSOP package with exposed thermal pad (MSOP8E), requiring connection to PCB ground plane for optimal thermal dissipation (θ_JA = 55 °C/W on 4-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL92012DRVR and TPS22965DRLR, the MP62340DH-LF-P uniquely delivers matched active-low enable logic, dual independent FLAG outputs, and UL certification-making it optimal for safety-critical, fault-aware USB and hot-swap implementations where diagnostic visibility and regulatory compliance are mandatory.

Availability

MP62340DH-LF-P is available at Aetrix Electronics and suitable for USB power distribution, PC card hot swap, and notebook PC power management requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP62340DH-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/MP62341 product line targets compact, reliable power distribution in space-constrained portable and communications equipment-emphasizing integrated protection, low quiescent current, and simplified layout through monolithic dual-channel integration.

FAQ

What is the maximum continuous current per channel for MP62340DH-LF-P?

The MP62340DH-LF-P supports 1 A continuous current per channel at +25°C ambient with proper PCB thermal design. Derating applies above +25°C: full 1 A is maintained up to +85°C ambient when using the MSOP8E exposed pad tied to a ≥1 cm² GND copper area per the datasheet layout guidelines.

Does MP62340DH-LF-P support reverse current blocking?

Yes-MP62340DH-LF-P includes intrinsic reverse current blocking. When OUT is driven higher than IN (e.g., during hot-swap or battery backup), the internal MOSFET body diode is reverse-biased and the control circuit holds the FET off, preventing backfeed into the input rail with leakage <0.2 μA.

How does the FLAG pin behave during thermal shutdown?

The FLAG pin is not deglitched during thermal shutdown-it asserts immediately upon junction temperature reaching 140°C. Unlike over-current events (which require 8 ms deglitch), thermal faults trigger FLAG low without delay to enable urgent system-level response such as forced fan activation or graceful shutdown.

Can MP62340DH-LF-P operate from a 3.3 V supply?

Yes-MP62340DH-LF-P operates across 2.7 V to 5.5 V input. At 3.3 V, typical R_DS(on) remains ≤130 mΩ, current limit stays within 1.1–2.2 A, and all protections (UVLO, thermal, FLAG) function fully. UVLO releases at 1.95 V rising edge, ensuring stable operation even with 3.3 V rail droop.

What is the purpose of the exposed pad on the MSOP8E package?

The exposed pad on MP62340DH-LF-P's MSOP8E package serves as the primary thermal path from die to PCB. It must be soldered to a solid GND copper pour (minimum 1 cm²) to achieve θ_JA = 55 °C/W. Leaving it unconnected raises junction temperature by >30°C at 1 A, risking premature thermal shutdown.

Is MP62340DH-LF-P UL certified?

Yes-MP62340DH-LF-P carries UL recognition under file E322138 per UL 60950-1. This certification covers flammability, insulation, and creepage/clearance requirements, enabling direct use in end products targeting North American safety approvals without additional component-level testing.

How does the device respond to a short circuit on one channel?

Upon short circuit, the affected channel enters constant-current mode at its trip threshold (1.6–2.4 A). If sustained, die temperature rises until thermal shutdown at 140°C disables that channel only-leaving the other channel fully operational. FLAG for the faulted channel goes low after 8 ms deglitch; recovery occurs automatically once junction cools to ~120°C.