Monolithic Power Systems Inc. MP2162AGQH-Z

Overview

MP2162AGQH-Z from Monolithic Power Systems is a synchronous step-down DC-DC converter IC with integrated 110mΩ high-side and 60mΩ low-side MOSFETs, delivering up to 2A continuous output current from a 2.5V–6V input while regulating output down to 0.6V. It employs constant-on-time (COT) control for fast transient response and operates at a default 1.5MHz switching frequency with only 17μA quiescent current-enabling high-efficiency power delivery in space-constrained portable instruments and FPGA core supplies.

For engineers reviewing the MP2162AGQH-Z datasheet, MP2162AGQH-Z pinout, MP2162AGQH-Z application, or MP2162AGQH-Z equivalent, key selection criteria include its 1.5% VFB accuracy, EN/PG support for power sequencing, 100% duty-cycle capability in dropout, thermal shutdown with 30°C hysteresis, and compatibility with low-ESR ceramic output capacitors without external compensation.

Technical Context

The MP2162AGQH-Z implements a constant-on-time control architecture with input voltage feed-forward, enabling near-constant 1.5MHz switching across 2.5V–6V input and 0.6V–VIN output ranges. Its on-time is calculated as T_ON ≈ 0.667μs × V_OUT/V_IN, and it enforces a fixed 60ns minimum off-time to prevent sub-harmonic oscillation during transients.

It integrates cycle-by-cycle over-current protection with a 3.2A typical high-side current limit and hiccup-mode short-circuit recovery. The open-drain PG pin uses a 550kΩ internal pull-up to VIN and asserts valid power-good when FB voltage remains within ±10% of 0.6V-supporting precise system-level power sequencing in multi-rail embedded designs.

Key Specifications

Pinout & Package

MP2162AGQH-Z is housed in a thermally enhanced QFN-8 package (2.0mm × 1.5mm, 0.75mm height), featuring an exposed thermal pad for efficient heat dissipation in high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RT6220EGQW and TPS62865ARGTR, MP2162AGQH-Z offers optimal balance of adjustability (0.6V–VIN), sequencing support (EN/PG), and ultra-low IQ-making it ideal for cost-sensitive, battery-operated, and space-constrained applications where design simplicity and long runtime are critical.

Availability

MP2162AGQH-Z is available at Aetrix Electronics and suitable for portable medical sensors, FPGA core power, wireless IoT edge nodes, and USB-powered test instruments requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for MP2162AGQH-Z 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 MP2162A belongs to MPS's COT-based synchronous buck converter product line, engineered specifically for compact, high-efficiency power delivery in battery-powered and thermally constrained portable electronics.

FAQ

What is the maximum recommended PCB copper area for the exposed thermal pad of MP2162AGQH-Z?

The QFN-8 package's exposed thermal pad must be soldered to a minimum 25 mm² copper pour connected to PGND via ≥4 thermal vias (0.3mm diameter, spaced ≤1mm apart). This achieves θ_JA ≈ 110°C/W and prevents thermal shutdown at 2A continuous load in still-air conditions.

Can MP2162AGQH-Z operate with a 1.0μH inductor at 5V input and 1.2V/2A output?

Yes-per the datasheet design example and Equation (3), a 1.0μH inductor is explicitly validated for 5V→1.2V conversion at 1.5MHz. Peak inductor current reaches 2.3A, well within the 3.2A current limit, and ripple current remains at ~30% of full load for optimal efficiency.

Does the PG pin require an external pull-up resistor?

No-the PG pin has an internal 550kΩ pull-up to VIN. An external resistor is unnecessary and may interfere with the ±10% trip window; however, an external pull-down or logic-level translator can be added if interfacing with 1.8V or 3.3V GPIOs.

How does the MP2162AGQH-Z behave during input undervoltage conditions?

When VIN falls below 2.3V (typical UVLO rising threshold), the device shuts down with 260mV hysteresis-ensuring clean restart only after VIN rises above 2.56V. During this state, EN remains inactive, PG goes low, and quiescent current drops to 20nA (shutdown mode).

Is the MP2162AGQH-Z RoHS-compliant and halogen-free?

Yes-MP2162AGQH-Z is lead-free, halogen-free, and fully compliant with the EU RoHS Directive 2011/65/EU. MPS confirms green status on its official Quality Assurance page, and the device carries no substance-of-concern exemptions.

What is the minimum output capacitor ESR requirement for stable operation?

None-the MP2162AGQH-Z is designed for unconditional stability with ceramic capacitors having near-zero ESR. Unlike voltage-mode controllers, its COT architecture does not rely on ESR for phase margin; 10μF X5R/X7R ceramics are sufficient for most 1.5MHz applications.

Can the feedback divider resistors be placed remotely from the FB pin?

No-feedback resistors must be placed directly adjacent to the FB pin with short, symmetric traces to minimize noise pickup and parasitic capacitance. Long traces introduce phase shift that degrades transient response and may cause instability, especially with high-value resistors (>200kΩ).