Monolithic Power Systems Inc. MP2193GC-P

Overview

MP2193GC-P from Monolithic Power Systems is a synchronous step-down DC/DC converter IC delivering up to 3A continuous output current with 25µA quiescent current, operating from 2.5V–5.5V input and regulating output down to 0.6V. It integrates 65mΩ P-channel and 35mΩ N-channel MOSFETs, uses constant-on-time (COT) control for fast transient response, and features output discharge, OVP, SCP, and thermal shutdown-designed for space-constrained battery-powered systems like SSDs and portable instruments.

For engineers reviewing the MP2193GC-P datasheet, MP2193GC-P pinout, MP2193GC-P application, or MP2193GC-P equivalent, key selection criteria include ultra-low IQ for standby efficiency, WLCSP-6 package footprint constraints, COT-based stability without external compensation, and integrated protection features enabling robust operation in mobile and embedded power rails.

Technical Context

The MP2193GC-P implements constant-on-time (COT) control with VIN feed-forward, maintaining ~1.1MHz switching frequency across 2.5V–5.5V input and 0.6V–5.5V output ranges. Its internal 0.6V reference and 1% FB accuracy enable precise output regulation under load and line transients.

It combines advanced asynchronous modulation (AAM) and zero-current detection (ZCD) to sustain high light-load efficiency, while cycle-by-cycle current limiting (6A peak), hiccup-mode short-circuit protection, and 117% VFB over-voltage detection provide fault resilience without external circuitry.

Key Specifications

Pinout & Package

MP2193GC-P is housed in an ultra-compact WLCSP-6 package (0.85mm × 1.25mm, 0.4mm pitch), optimized for high-density PCB layouts in mobile and wearable applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS62865DRLR and RTQ2132BGQW, MP2193GC-P offers the smallest package (WLCSP-6), integrated output discharge, and optimal balance of 25µA IQ and 1.1MHz fSW for space-limited, battery-sensitive designs-making it uniquely suited for SSDs and miniaturized portable instrumentation where every 0.1mm² matters.

Availability

MP2193GC-P is available at Aetrix Electronics and suitable for solid-state drives, portable instrumentation, battery-powered devices, and multi-function printers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MP2193GC-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 expertise in DC/DC conversion, LED drivers, and motor control solutions.

The MP2193 belongs to MPS's ultra-compact, low-IQ buck converter product line, engineered specifically for space- and energy-constrained portable and storage applications where thermal density and standby power dominate design trade-offs.

FAQ

What is the maximum recommended output current for MP2193GC-P at 85°C ambient temperature?

At 85°C ambient, the MP2193GC-P delivers up to 2.6A continuous output current when mounted on a standard 2-layer PCB with adequate copper pour. Derating follows the Output Current Derating vs. Ambient Temperature curve on page 8 of the datasheet, where thermal resistance θJA = 141°C/W limits junction temperature to 125°C under typical layout conditions.

Does MP2193GC-P require external compensation components?

No. The MP2193GC-P uses constant-on-time (COT) control architecture with built-in VIN feed-forward, eliminating the need for external compensation networks. Stability is inherently achieved across the full input/output range with only the recommended input and output capacitors and inductor.

How does the output discharge function operate, and what is its resistance value?

When EN is pulled low, the MP2193GC-P activates an internal NMOS discharge switch between OUT and GND. This provides a 200Ω resistive path (typical) to safely collapse VOUT within milliseconds, preventing back-powering of upstream circuitry or latch-up in multi-rail systems.

Can MP2193GC-P regulate output voltages below 0.6V?

No. The internal reference voltage is fixed at 0.6V, and the FB pin is designed for resistive divider configurations that scale VOUT ≥ 0.6V. Attempting sub-0.6V regulation violates the FB input common-mode range and results in loss of regulation and potential instability.

What is the minimum off-time specification, and why is it important?

The MP2193GC-P has a guaranteed minimum off-time of 100ns. This parameter prevents inductor current runaway during large load transients and ensures stable operation at high duty cycles (e.g., VOUT close to VIN), especially critical in battery-powered systems operating near end-of-discharge voltage.

Is the WLCSP-6 package lead-free and RoHS-compliant?

Yes. The MP2193GC-P WLCSP-6 package is fully lead-free, halogen-free, and compliant with the EU RoHS directive. MPS confirms green status per its Quality Assurance documentation, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 requirements.

How does the advanced asynchronous modulation (AAM) mode improve light-load efficiency?

AAM mode reduces switching frequency under light loads by extending on-time pulses based on zero-current detection (ZCD), minimizing gate drive and switching losses. This achieves >85% efficiency at 10mA output-critical for maintaining battery life in always-on sensor nodes without requiring complex external control logic.