Monolithic Power Systems Inc. MP5098GDT-P

Overview

MP5098GDT-P from Monolithic Power Systems is a dual-channel electronic fuse IC designed for 12V and 5V power rails, providing integrated over-current, over-voltage, short-circuit, and thermal protection with current monitoring. It features 40mΩ R_DS(ON), 210µA/190µA quiescent current per channel, fixed 4A/3A trip limits, and TQFN-10 (2mm×3mm) packaging-used in HDD/SSD hot-swap power sequencing and backplane insertion protection.

For engineers reviewing the MP5098GDT-P datasheet, MP5098GDT-P pinout, MP5098GDT-P application, or MP5098GDT-P equivalent, this page delivers verified electrical parameters, validated dual-rail protection behavior, confirmed current-monitoring gain (32µA/A and 34µA/A), real-world soft-start capacitor design guidance, and precise OVP thresholds (15V for 12V rail, 5.7V for 5V rail).

Technical Context

The MP5098GDT-P integrates two independent e-fuse channels with separate VIN/VOUT paths, dedicated SS pins for slew-rate-controlled startup, and IMON pins enabling resistor-based current sensing without external shunts. Each channel employs fast-response comparators for OVP (2µs response) and SCP (<1µs turn-off), plus hiccup-mode OCP recovery with 2ms on / 200ms off timing.

Its architecture includes internal charge pumps driving high-voltage MOSFETs capable of withstanding 24V/100ms transients on both rails, UVLO thresholds (10.0V/4.35V rising) with hysteresis, and thermal shutdown at 155°C with latch-off behavior-enabling robust operation in live-insertion environments without external supervision circuitry.

Key Specifications

Pinout & Package

TQFN-10 (2mm × 3mm) package with exposed thermal pad; RoHS-compliant, halogen-free, MSL Level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-rail e-fuse applications.

Compared with TIDA-01622, MP5098GDT-P reduces component count and layout complexity while delivering factory-trimmed accuracy; versus RTQ2132BGQW, it provides true dual-rail integration with matched protection timing and unified monitoring-critical for space-constrained storage and modular computing platforms.

Availability

MP5098GDT-P is available at Aetrix Electronics and suitable for hard-disk drives, solid-state drives, and industrial backplane power distribution requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/halogen-free compliance.

Supply support for MP5098GDT-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 power management ICs, with over 20 years of expertise in DC/DC converters, LED drivers, and protection devices.

The MP5098 belongs to MPS's eFuse & Load Switch product line, engineered specifically for hot-swap, storage, and modular computing applications demanding integrated protection, precision current monitoring, and compact dual-rail solutions.

FAQ

What is the maximum allowable input transient voltage and duration for MP5098GDT-P?

The MP5098GDT-P supports 24V for 100ms on both VIN1 and VIN2 pins per absolute maximum ratings. This transient immunity is validated across temperature and process corners, enabling reliable operation during hot-swap events without external TVS diodes - critical for enterprise storage and telecom backplanes.

How does the current monitoring function interface with a microcontroller ADC?

IMON1 and IMON2 sink current proportional to load current (32µA/A and 34µA/A). Connecting a 20kΩ resistor from each IMON pin to GND generates 0–2.5V V_IMON signals compatible with standard 3.3V ADC references. Offset error remains below 3.8µA, ensuring ≤1% full-scale error at 3A loads.

Can MP5098GDT-P be used with 3.3V input rails?

No - the device is specified only for 12V (10.8–13.8V) and 5V (4.6–5.5V) input rails. Applying 3.3V to VIN1 or VIN2 falls below UVLO thresholds (9.6V and 4.25V respectively), preventing enablement. It is not rated for sub-4.6V operation.

What happens during simultaneous over-current and over-voltage faults?

OVP has priority: if V_OUT exceeds its threshold (15V/5.7V), the internal MOSFET gate is actively clamped to limit output voltage, even during OCP events. This ensures downstream components are protected from overvoltage first - a hardware-enforced hierarchy confirmed in functional block diagram Figure 1.

Is thermal shutdown latched or auto-recovering?

Thermal shutdown is latch-off: once junction temperature exceeds 155°C, the device shuts down and remains disabled until EN is cycled low-to-high or VIN is fully removed and re-applied. This prevents uncontrolled restarts in thermally compromised conditions - verified in Section 17 of the datasheet.

Does MP5098GDT-P support independent enable/disable of each channel?

No - EN is a global control pin affecting both channels simultaneously. There is no provision for individual channel enable/disable; both rails turn on or off together. This simplifies control logic but requires system-level coordination of dual-rail sequencing.

What PCB layout practices maximize thermal performance?

Per datasheet Section 18, connect the exposed thermal pad directly to a large copper pour tied to GND; use ≥4 thermal vias (0.3mm diameter) under the pad; route VIN/VOUT traces wide and short; place input capacitors within 3mm of respective VIN/GND pins - achieving θ_JA = 40°C/W on 2-layer boards.