Monolithic Power Systems Inc. MP5014AGJ-P

Overview

MP5014AGJ-P from Monolithic Power Systems is a programmable current-limit load switch with integrated 36 mΩ DMOS FET, 10–13.8 V input range, 15 V over-voltage clamp, and adjustable slew rate via DV/DT pin. It protects downstream circuitry in hot-swap and storage applications by limiting inrush current and clamping output voltage during transients.

For engineers reviewing the MP5014AGJ-P datasheet, MP5014AGJ-P pinout, MP5014AGJ-P application, or MP5014AGJ-P equivalent, key selection criteria include programmable current limit (2.8–4.9 A hold, 5.6 A trip), thermal latch at 175°C, TSOT23-8 package thermal resistance (θJA = 100°C/W), and bi-directional ENABLE/FAULT signaling with three-level voltage states.

Technical Context

The MP5014AGJ-P implements a sense-FET-based current-limit architecture with external resistor programming (e.g., 22 Ω sets 3.8 A hold current). Its internal charge pump enables full gate drive for low R_DS(on), while UVLO (8.5 V turn-on, 0.8 V hysteresis) prevents operation below minimum supply.

Over-voltage protection clamps SOURCE to 15 V typical when VCC exceeds 17 V; thermal shutdown latches at 175°C and drives ENABLE/FAULT to mid-level (0.82–1.95 V), requiring power cycle or low-pulse reset. The DV/DT pin supports 1 ms default rise time (10–90%) with optional external capacitor scaling.

Key Specifications

Pinout & Package

MP5014AGJ-P uses the TSOT23-8 package (JEDEC MO-193BA), 2.9 mm × 1.6 mm × 0.85 mm, with exposed pad for thermal enhancement. Pin 1 is lower-left when top marking "AMJ" is read left-to-right.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCK127BG and TPS25942L, MP5014AGJ-P uniquely balances ultra-compact TSOT23-8 footprint, 36 mΩ conduction loss, and dual-adjustability (current limit + slew rate) for cost-sensitive hot-swap systems where space and simplicity are critical.

Availability

MP5014AGJ-P is available at Aetrix Electronics and suitable for storage systems, hot-swap backplanes, and set-top box power rails requiring stable component supply, RoHS-compliant packaging, and long-term lifecycle support.

Supply support for MP5014AGJ-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 core expertise in DC/DC conversion, load switching, and motor control.

The MP5014A belongs to MPS's programmable load switch product line, designed specifically for robust, space-constrained hot-swap and storage applications requiring integrated current limiting, OVP, and thermal protection.

FAQ

What is the maximum continuous current supported by MP5014AGJ-P?

The MP5014AGJ-P supports up to 4.9 A continuous hold current (at TJ = 25°C with RLIM = 22 Ω), limited by thermal dissipation. With 100°C/W θJA and 25°C ambient, sustained 4.9 A causes ~24°C rise-well within 125°C max junction temperature. Derate above 80°C ambient per datasheet derating curves.

How does the ENABLE/FAULT pin function during thermal shutdown?

During thermal shutdown, ENABLE/FAULT is actively driven to a mid-level voltage (0.82–1.95 V), which is distinct from low (disable/clear) and high (enable) states. This mid-level signals thermal fault to monitoring circuitry and latches the device off until VCC cycles or ENABLE/FAULT is pulled low to reset the internal fault flag.

Can MP5014AGJ-P operate with no external capacitor on DV/DT?

Yes-DV/DT may be left floating to achieve the default 1 ms output rise time (10–90%). An internal 50 pF capacitor ensures consistent ramp behavior without external components. Adding capacitance scales rise time linearly (e.g., 1 nF yields ~20.3 ms), but is unnecessary unless slower dv/dt is required.

What is the purpose of the I-LIMIT pin, and how is current limit set?

I-LIMIT connects an external resistor to SOURCE to program both hold current (e.g., 3.8 A at 22 Ω) and trip current (e.g., 5.6 A). The resistor value directly determines current thresholds per Table 2 in the datasheet; no calibration or trimming is needed, and the same resistor sets both limits simultaneously.

Does MP5014AGJ-P require an external pull-up resistor on ENABLE/FAULT?

No-MP5014AGJ-P includes an internal 25 μA weak pull-up current on ENABLE/FAULT, sufficient to drive the pin high when not overridden. This eliminates the need for external pull-up resistors in wired-NOR fault bus configurations, reducing component count and board space.

What happens during an over-voltage event on VCC?

When VCC exceeds ~17 V, the internal over-voltage protection activates and clamps the SOURCE output to 15 V (typical), regardless of load. This protects downstream 12 V-rated components without requiring external TVS diodes, and the device remains operational-only the output voltage is regulated downward.

Is MP5014AGJ-P compatible with lead-free reflow soldering processes?

Yes-MP5014AGJ-P is fully RoHS-compliant, halogen-free, and qualified for standard lead-free reflow profiles (JEDEC J-STD-020). Its TSOT23-8 package supports peak temperatures up to 260°C for 20–40 seconds, matching industry-standard Pb-free assembly requirements.