Monolithic Power Systems Inc. MP6233DH-LF-Z

Overview

MP6233DH-LF-Z from Monolithic Power Systems is a dual-channel, current-limited power distribution switch with two independent 1.5A-rated 85mΩ MOSFETs, operating from 2.7V to 5.5V input, featuring thermal shutdown, under-voltage lockout, and open-drain FLAG outputs for over-current detection-used in USB power distribution and PC Card hot-swap circuits.

For engineers reviewing the MP6233DH-LF-Z datasheet, MP6233DH-LF-Z pinout, MP6233DH-LF-Z application, or MP6233DH-LF-Z equivalent, this device delivers precise load switching control with 8ms deglitched fault reporting, reverse current blocking, and guaranteed trip current of 2.3A at 25°C-critical for robust portable and embedded power rail management.

Technical Context

The MP6233DH-LF-Z integrates two independent high-side power switches with internal current-limiting circuitry that transitions into constant-current mode at ≥2.7A trip threshold (typical), then triggers thermal shutdown above 140°C junction temperature. Each channel features active-high enable logic compatible with CMOS/TTL levels and open-drain FLAG outputs with 8ms deglitch timing.

It operates across –40°C to +85°C ambient, supports up to 5.5V input, and maintains 85mΩ R_DS(on) over temperature. Reverse current blocking prevents backflow when output voltage exceeds input, and UVLO ensures operation only above 1.95V rising threshold with 250mV hysteresis.

Key Specifications

Pinout & Package

MP6233DH-LF-Z is housed in an MSOP-8E package with exposed thermal pad (connected to GND), offering compact footprint and enhanced thermal dissipation for high-current switching in space-constrained designs.

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 TPL92012RGER and TPS22965DRLR, MP6233DH-LF-Z uniquely combines dual-channel autonomy, 8ms hardware-deglitched fault reporting, thermal shutdown recovery, and reverse current blocking-making it optimal for unattended, safety-aware USB and hot-swap systems requiring minimal external components.

Availability

MP6233DH-LF-Z is available at Aetrix Electronics and suitable for USB power distribution, PC Card hot swap, and notebook PC power management requiring stable component supply across industrial temperature ranges and long-term production cycles.

Supply support for MP6233DH-LF-Z 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.

The MP6233 belongs to MPS's power distribution switch product line, engineered specifically for robust, low-component-count load switching in portable and embedded systems where reliability, thermal resilience, and fault diagnostics are critical.

FAQ

What is the maximum continuous current per channel for MP6233DH-LF-Z?

The MP6233DH-LF-Z supports 1.5A continuous current per channel at +25°C ambient, derating linearly above 25°C based on thermal resistance (θ_JA = 55°C/W). At 85°C ambient, max continuous current drops to approximately 1.1A per channel with proper PCB copper area.

Does MP6233DH-LF-Z support reverse current blocking?

Yes-MP6233DH-LF-Z actively blocks reverse current flow from OUTx to IN when the switch is disabled, verified by <0.2µA reverse leakage at OUTx = 5.5V and IN = GND. This eliminates need for external blocking diodes in bidirectional power domains.

How does the FLAG pin behave during power-up?

The FLAG pin remains inactive (high-impedance) during power-up and does not assert false faults-even with input voltage ramp-due to internal power-on reset logic. Fault reporting begins only after VIN exceeds UVLO threshold and stabilizes.

What is the purpose of the 8ms FLAG deglitch time?

The 8ms deglitch window filters out brief current spikes (e.g., capacitor inrush, ESD transients) before asserting a fault, preventing unnecessary system interrupts. It applies only to over-current events-not thermal shutdown or UVLO, which trigger immediately.

Can MP6233DH-LF-Z operate from a 3.3V supply?

Yes-MP6233DH-LF-Z operates from 2.7V to 5.5V, making it fully compatible with 3.3V systems. At 3.3V input, R_DS(on) increases slightly (≤130mΩ), and trip current remains within 2.3A ±10%, ensuring consistent protection behavior.

Is the exposed thermal pad required to be connected to GND?

Yes-the exposed pad on the MSOP-8E package must be soldered to a PCB GND plane. It serves as both primary thermal path and electrical ground reference; omitting this connection degrades θ_JA by >30% and risks thermal shutdown under 1A load.

What happens during thermal shutdown and how does recovery work?

When junction temperature reaches 140°C, both channels shut off. The device remains latched off until die temperature falls to ~120°C (20°C hysteresis), then automatically resumes normal operation-no external reset required.