Monolithic Power Systems Inc. MP5006EQ-LF-P

Overview

MP5006EQ-LF-P from Monolithic Power Systems is a programmable current-limit switch IC designed for hot-swap and load protection in 5V power rails. It integrates a 44mΩ DMOS power FET, supports adjustable current limit (1.2–3.7A) via external resistor, provides slew-rate-controlled startup (1.1ms default), and features auto-retry thermal shutdown, UVLO (3.2–4.0V), and overvoltage clamping (5.4V). It is used in SSDs and laptop power rails to prevent inrush damage and short-circuit overstress.

For engineers reviewing the MP5006EQ-LF-P datasheet, MP5006EQ-LF-P pinout, MP5006EQ-LF-P application, or MP5006EQ-LF-P equivalent, key selection criteria include its programmable trip/hold current thresholds, dv/dt-controlled soft-start behavior, bi-directional Enable/Fault signaling, thermal cycling response under sustained overload, and QFN10 package thermal performance at 50°C/W θJA.

Technical Context

The MP5006EQ-LF-P implements a sense-FET-based current-limit architecture with internal charge-pump gate drive, enabling low R_DS(on) (44mΩ typ.) while operating from 4–10V input. Its dv/dt pin controls output voltage ramp time via external capacitor or open-circuit configuration (1.1ms default), and its Enable/Fault pin serves dual roles: logic-level enable input and open-drain fault indicator driven low during UVLO, overvoltage, or thermal shutdown.

Current limiting operates in two stages: trip current (e.g., 3A at R_LIMIT=24Ω) triggers immediate transition to constant-current hold mode (1.55A), and sustained hold-mode dissipation triggers thermal shutdown at 175°C with 25°C hysteresis. UVLO ensures turn-on only above 3.6V (typ.) and disables output below 3.2V, while output clamping limits V_OUT to 5.4V (typ.) if V_IN exceeds safe range.

Key Specifications

Pinout & Package

MP5006EQ-LF-P uses a thermally enhanced QFN10 (3mm × 3mm) package with exposed VIN pad for improved heat dissipation. The package has 11 terminals: pins 1–5 are paralleled VOUT outputs, pin 6 is +ILIMIT, pin 7 is −ILIMIT, pin 8 is Enable/Fault (bi-directional), pin 9 is dv/dt, pin 10 is GND, and pin 11 is VIN (exposed pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable current-limit switch applications.

Compared with TPS259211RGER and RT9711CGQW, MP5006EQ-LF-P uniquely combines adjustable dv/dt control, integrated overvoltage clamping, and auto-retry thermal shutdown-making it optimal for robust hot-swap systems requiring coordinated fault management and wide input tolerance.

Availability

MP5006EQ-LF-P is available at Aetrix Electronics and suitable for hot-swap power insertion, SSD power rail protection, and laptop mainboard 5V distribution requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.

Supply support for MP5006EQ-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 MP5006 belongs to MPS's load switch and protection IC product line, engineered specifically for robust hot-swap, inrush control, and fault-tolerant power distribution in space-constrained computing and storage platforms.

FAQ

What is the minimum external current limit resistor value for MP5006EQ-LF-P?

The datasheet specifies RLIMIT=24Ω for 3A trip current. Lower resistor values increase trip current but reduce resolution and may exceed internal sensing accuracy. No minimum value is specified, but RLIMIT < 20Ω risks exceeding recommended current-sense range and degrading trip threshold stability.

Can MP5006EQ-LF-P operate with input voltage below 4V?

No. The Recommended Operating Conditions specify 4V minimum input voltage. Below 4V, UVLO prevents turn-on; the device remains disabled until VIN rises above 3.6V (typ.), and operation below 4V is not characterized or guaranteed for RDS(on), current limit, or timing parameters.

How does the Enable/Fault pin behave during thermal shutdown?

During thermal shutdown, the Enable/Fault pin is actively driven low by internal circuitry. After die temperature falls below 150°C (175°C – 25°C hysteresis), the pin releases and is pulled high by the internal 25µA current source, enabling automatic restart without external intervention.

Is an external capacitor required on the dv/dt pin?

No. Leaving the dv/dt pin unconnected yields a default 1.1ms output rise time. An external capacitor is optional and used only when longer ramp times (e.g., 2.2ms to 23.5ms) are needed to meet specific inrush or EMI requirements.

What is the maximum continuous output current rating for MP5006EQ-LF-P?

The datasheet specifies 2.3A continuous current at TJ=80°C with minimum copper PCB. At TA=25°C and full thermal pad soldering, sustained operation above 600mA requires external heatsinking to avoid thermal shutdown due to 50°C/W θJA limitation.

Does MP5006EQ-LF-P provide reverse current blocking?

No. The internal DMOS FET is not body-diode isolated for reverse conduction blocking. When VOUT > VIN, current flows freely through the intrinsic body diode. Reverse current protection requires an external back-to-back FET configuration or dedicated reverse-blocking load switch.

How many MP5006EQ-LF-P devices can share a single Enable/Fault bus?

The datasheet states a maximum fanout of 5 chips on one Enable/Fault line. This is based on the 25µA internal pull-up current and the cumulative sink current required to maintain logic-low fault signaling across all devices during simultaneous fault events.