Monolithic Power Systems Inc. EV2153-TF-00A

Overview

EV2153-TF-00A from Monolithic Power Systems is a 3A synchronous step-down DC/DC converter with 25μA quiescent current, 1.1MHz fixed switching frequency, and 2.5V–5.5V input range. It delivers a fixed 1.2V output using internal 65mΩ/35mΩ MOSFETs, supports power-good signaling, and targets ultra-low-power portable systems requiring high light-load efficiency.

For engineers reviewing the EV2153-TF-00A datasheet, EV2153-TF-00A pinout, EV2153-TF-00A application, or EV2153-TF-00A equivalent, this evaluation board enables rapid validation of thermal performance, load transient response (0–3A step), EN-controlled sequencing, short-circuit hiccup recovery, and efficiency across 1.2V/1.8V/2.5V/3.3V output configurations under real PCB layout constraints.

Technical Context

The EV2153-TF-00A implements a Constant-On-Time (COT) control architecture optimized for fast line/load transient response without external compensation. Its integrated power stage uses asymmetric R_DS(on) (65mΩ high-side / 35mΩ low-side) to balance conduction loss and gate drive overhead at 3A continuous output.

This evaluation board hosts the MP2153GTF in SOT563 package and configures it as a fixed 1.2V output variant with power-good (PG) functionality enabled via R4 pull-up to VIN. It validates operation across 2.5V–5.5V input, 0–3A load, and ambient temperatures up to +25°C per test conditions.

Key Specifications

Availability

EV2153-TF-00A is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered IoT nodes, and wireless networking card power subsystems requiring stable component supply, pre-validated thermal layout, and production-ready reference design fidelity.

Supply support for EV2153-TF-00A 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 over two decades of expertise in DC/DC conversion, motor drivers, and LED controllers.

The MP2153 product line delivers ultra-low-I_Q synchronous buck converters for space-constrained, battery-sensitive applications-designed specifically for portable medical devices, wearables, and always-on sensor nodes where standby efficiency and fast transient immunity are critical.

FAQ

What is the default output voltage configured on the EV2153-TF-00A board?

The EV2153-TF-00A board is configured for a fixed 1.2V output using the MP2153GTF-12 variant. This is achieved by removing R1 and R2 and connecting R4 between PG and VIN to enable power-good functionality. No external feedback resistors are required.

Which IC package does the EV2153-TF-00A evaluation board use?

The board uses the MP2153GTF in SOT563 package (1.6mm × 1.2mm × 0.55mm height), matching the footprint and thermal pad layout specified in the MP2153 datasheet. The PCB includes exposed thermal vias beneath the package for effective heat dissipation during 3A operation.

Does the EV2153-TF-00A support adjustable output voltage?

No-the EV2153-TF-00A is a fixed-output evaluation board for the MP2153GTF-12. For adjustable output, use the MP2153GTF evaluation variant (e.g., EV2153-TF-00B), which retains R1/R2 feedback network and removes R4 to disable PG, enabling VOUT adjustment down to 0.6V.

How is short-circuit protection implemented and verified on this board?

Short-circuit protection operates in hiccup mode: upon overcurrent detection, the MP2153GTF shuts down switching, waits ~500µs, then attempts restart. Oscilloscope waveforms on page 6 confirm entry into hiccup state (repetitive VSW pulses) and full recovery within 1ms after fault removal.

What external components are required to operate the EV2153-TF-00A board?

Only a DC input source (2.5–5.5V), load connection to VOUT/GND, and optional oscilloscope probes are needed. The board integrates all critical components: 1.0μH shielded inductor (Wurth 74437324010), dual 22μF X5R ceramic output capacitors, and 100kΩ feedback resistor network for PG assertion.

Can the EV2153-TF-00A be used to evaluate efficiency at multiple output voltages?

Yes-by replacing the MP2153GTF-12 IC with other factory-trimmed variants (e.g., MP2153GTF-15, -18, -25, -33), the same board evaluates efficiency across 1.2V–3.3V outputs. Efficiency curves on page 2 show comparative data for 1.2V, 1.8V, 2.5V, and 3.3V at 5V input.