Monolithic Power Systems Inc. MP2162GQH-P

Overview

MP2162GQH-P from Monolithic Power Systems is a 2A, 6V-input synchronous step-down DC/DC converter with Constant-On-Time (COT) control, 17μA quiescent current, and 1.5MHz switching frequency in a 2.0×1.5mm QFN-8 package. It delivers regulated output down to 0.6V from 2.5–6V input and integrates 100mΩ/60mΩ P/N-channel MOSFETs for high efficiency in space-constrained portable power rails.

For engineers reviewing the MP2162GQH-P datasheet, MP2162GQH-P pinout, MP2162GQH-P application, or MP2162GQH-P equivalent, this device supports precise power sequencing via EN and PG pins, enables fast transient response in FPGA/DSP core supplies, and maintains stability with low-ESR ceramic capacitors - critical for battery-powered instrumentation and low-voltage I/O systems.

Technical Context

The MP2162GQH-P employs a COT control architecture with input voltage feed-forward to maintain near-constant 1.5MHz switching frequency across 2.5–6V input and 0.6–VIN output ranges. Its internal 0.6V reference and ±3% feedback voltage tolerance enable accurate regulation under load and line variations.

It integrates cycle-by-cycle overcurrent protection, thermal shutdown at 150°C with 30°C hysteresis, hiccup-mode short-circuit recovery, and 100% duty-cycle operation in dropout. The open-drain PG pin features a 550kΩ internal pull-up to VIN and ±10% trip thresholds relative to VFB.

Key Specifications

Pinout & Package

MP2162GQH-P is housed in an ultra-small 2.0mm × 1.5mm, 0.5mm pitch QFN-8 package with exposed thermal pad (PGND-connected) for enhanced power dissipation in thermally constrained layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62865RQYR and RTQ2132BGQW, MP2162GQH-P uniquely balances ultra-low IQ (17μA), 100% duty-cycle operation, and integrated PG signaling in the smallest footprint (2.0×1.5mm), making it optimal for size- and battery-life-constrained portable instrumentation.

Availability

MP2162GQH-P is available at Aetrix Electronics and suitable for wireless networking cards, portable medical instruments, and battery-powered test equipment requiring stable component supply with guaranteed long-term availability.

Supply support for MP2162GQH-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.

The MP2162 belongs to MPS's ultra-compact DC/DC converter product line, engineered specifically for space-constrained, battery-sensitive applications such as portable instrumentation, wearables, and IoT edge nodes.

FAQ

What is the minimum recommended output capacitor value for stable operation?

The MP2162GQH-P is stable with low-ESR ceramic capacitors ≥10μF. For 1.2V/2A operation, a 22μF X5R 0603 ceramic capacitor with ≤5mΩ ESR meets ripple and stability requirements per the datasheet's design guidelines and typical performance curves.

Does MP2162GQH-P support forced PWM mode or only auto-mode operation?

MP2162GQH-P operates exclusively in automatic discontinuous conduction mode (DCM) at light loads and forced continuous conduction mode (CCM) at heavier loads - it does not offer a forced PWM pin or mode selection. Its proprietary light-load control eliminates switching node ringing while maintaining >85% efficiency at 1mA load.

Can the PG pin drive a standard CMOS logic input directly?

Yes - the PG pin is an open-drain output with a 550kΩ internal pull-up to VIN. When pulled high, it sources ~9μA at VIN=5V, sufficient to drive standard 74LVC CMOS inputs (I_IL ≤ ±1μA). For faster rise times or higher fan-out, add an external 100kΩ pull-up to 3.3V.

What is the maximum allowable thermal pad copper area for the QFN-8 package?

The thermal pad (connected to PGND) may be extended to fill the entire bottom footprint (2.0×1.5mm) with multiple thermal vias (≥4×0.3mm diameter) to inner PGND planes. Per JEDEC standards, this achieves θ_JA ≈ 110°C/W on 2-layer boards and improves power handling by 35% versus minimal pad area.

Is the 1.5MHz switching frequency adjustable via external components?

No - the 1.5MHz nominal frequency is fixed by the internal COT controller and cannot be adjusted. Frequency variation is limited to ±20% over temperature and input voltage per datasheet specifications; no external resistor or capacitor tuning is supported.

How does the MP2162GQH-P handle input undervoltage conditions?

It incorporates an under-voltage lockout (UVLO) with 2.3V nominal turn-on threshold and 260mV hysteresis. Below 2.15V, the device shuts down completely; above 2.45V, it enables fully. This prevents erratic operation during battery brownout and ensures clean startup at defined voltage levels.

What is the recommended PCB layout practice for minimizing EMI in MP2162GQH-P designs?

Place the input capacitor (10μF X5R) within 2mm of VIN and PGND pins using wide, short traces; keep the SW node area minimal and isolated from FB/AGND; route feedback resistors adjacent to the FB pin with guard traces tied to AGND; and connect the thermal pad to a solid PGND plane with ≥4 thermal vias.