Monolithic Power Systems Inc. MP5095GJ-P

Overview

MP5095GJ-P from Monolithic Power Systems is a dual-channel, low-quiescent-current load switch IC with integrated 30mΩ MOSFETs per channel, supporting 0.5V–5.5V input voltage and delivering up to 2.3A continuous current per channel with 1.85V–5.5V VCC supply. It features soft-start, hiccup-mode current limiting, thermal shutdown (155°C), and output discharge-designed for power rail sequencing in portable computing and handheld devices.

For engineers reviewing the MP5095GJ-P datasheet, MP5095GJ-P pinout, MP5095GJ-P application, or MP5095GJ-P equivalent, key selection criteria include its 40µA quiescent current, dual independent enable control (EN1/EN2), TSOT23-8 package footprint, reverse current blocking capability, and parallel-channel configuration support for 4.6A operation.

Technical Context

The MP5095GJ-P implements two independent high-side load switches with charge-pump–assisted gate drive enabling full enhancement of internal N-channel MOSFETs across its 0.5V–5.5V VIN range. Each channel integrates dedicated current-sense circuitry for fast (200ns) short-circuit response and programmable hiccup timing (2ms on / 90ms off).

Its control architecture supports flexible power sequencing: VCC must exceed 1.85V before EN1/EN2 become active (threshold = 1.2V), and output discharge activates automatically when either EN or VCC falls below UVLO. The device operates over –40°C to +125°C junction temperature with thermal shutdown hysteresis of 30°C.

Key Specifications

Pinout & Package

MP5095GJ-P is housed in a thermally enhanced TSOT23-8 package (2.9mm × 1.6mm × 0.85mm), optimized for space-constrained portable PCBs with exposed thermal pad connection to GND plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22965DSGR and NCP45561MUTBG, MP5095GJ-P uniquely combines dual independent control, integrated discharge, hiccup recovery, and ultra-low 40µA quiescent current in a single TSOT23-8 package-making it optimal for compact, battery-sensitive portable designs requiring reliable fault management.

Availability

MP5095GJ-P is available at Aetrix Electronics and suitable for notebook subsystem power management, tablet peripheral interface control, and handheld medical device battery isolation requiring stable component supply and long-lifecycle availability.

Supply support for MP5095GJ-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 across Asia and North America and global manufacturing partnerships.

The MP5095 belongs to MPS's load switch product line, engineered specifically for space- and power-constrained portable electronics requiring precise rail control, ultra-low standby consumption, and robust fault handling without external components.

FAQ

Can MP5095GJ-P operate with VIN below 1.0V?

Yes-MP5095GJ-P supports input voltages as low as 0.5V per channel, enabling direct integration with low-voltage logic rails (e.g., 0.8V DDR I/O) and single-cell NiMH batteries. Its charge-pump gate driver ensures full MOSFET enhancement even at sub-1V VIN, maintaining specified R_DS(ON) and current capability.

What is the maximum allowable VCC voltage?

The absolute maximum VCC voltage is +6V, but the recommended operating range is 1.85V to 5.5V. Operating above 5.5V risks exceeding internal regulator limits and may trigger UVLO hysteresis instability; sustained operation beyond 6V will cause permanent damage per Absolute Maximum Ratings.

How does the output discharge function behave during enable transitions?

The 50Ω discharge path activates only when EN1 or EN2 is low *or* when VCC drops below UVLO (1.7V). During normal enable/disable toggling with stable VCC, discharge engages within 1µs of EN deassertion and fully discharges a 1µF load in under 50µs-preventing residual voltage from interfering with downstream reset sequencing.

Is parallel-channel operation supported without external current-sharing components?

Yes-MP5095GJ-P channels are matched within ±10% R_DS(ON) and share identical thermal characteristics, enabling direct IN-to-IN and OUT-to-OUT paralleling for 4.6A total current. No external ballast resistors or current-sense feedback are required, as mismatch-induced current imbalance remains below 15% across temperature and process variation.

Does MP5095GJ-P provide reverse-voltage protection on IN pins?

No-MP5095GJ-P does not protect against reverse voltage applied to IN1 or IN2. However, its body diodes inherently block reverse current flow from OUT to IN when EN is low. For true reverse-voltage tolerance (e.g., −5V on IN), external series Schottky diodes or dedicated reverse-protection ICs are required.

What PCB layout practices maximize thermal performance?

Thermal performance is optimized by connecting the exposed thermal pad (pin 2 GND) to a ≥40mm² internal or bottom-layer GND copper pour using ≥6 thermal vias (0.3mm diameter). Input/output capacitors must be placed within 2mm of respective pins, and VCC decoupling (1µF X5R) should sit adjacent to pin 1 with shortest possible trace length.

Can EN1 and EN2 be tied together for single-control operation?

Yes-EN1 and EN2 may be connected to a common enable signal to operate both channels synchronously. This configuration maintains all protections (soft-start, current limit, thermal shutdown) per channel independently, and is commonly used in applications requiring coordinated rail enablement such as display backlight + touchscreen controller power-up.