Monolithic Power Systems Inc. MP2152DGTF-P

Overview

MP2152DGTF-P from Monolithic Power Systems is a synchronous step-down DC/DC converter with integrated 75mΩ P-channel high-side and 45mΩ N-channel low-side MOSFETs, delivering up to 2A continuous output current across a 2.5V–5.5V input range while regulating output down to 0.6V. It employs constant-on-time (COT) control for fast transient response, features 25μA quiescent current, 1.1MHz switching frequency, and fast output discharge-optimized for SSD power rails and portable battery-powered systems.

For engineers reviewing the MP2152DGTF-P datasheet, MP2152DGTF-P pinout, MP2152DGTF-P application, or MP2152DGTF-P equivalent, key selection considerations include its SOT563 package footprint, 1% FB voltage accuracy, hiccup-mode short-circuit protection, thermal shutdown at 160°C, and compatibility with standard 1μH shielded inductors and 22μF ceramic output capacitors.

Technical Context

The MP2152DGTF-P uses constant-on-time (COT) control with VIN feed-forward to maintain stable 1.1MHz switching frequency across input and output voltage variations. Its internal power stage integrates complementary MOSFETs with R_DS(ON) of 75mΩ (HS) and 45mΩ (LS), enabling high efficiency in ultra-compact layouts.

It implements advanced asynchronous modulation (AAM) and zero-current detection (ZCD) for light-load DCM operation, plus dedicated fast output discharge via an internal 13Ω switch. Protection architecture includes cycle-by-cycle OCP (4A peak), output OVP (115% of V_FB), hiccup-mode SCP, and thermal shutdown with 30°C hysteresis.

Key Specifications

Pinout & Package

SOT563 (1.6mm × 1.6mm, 0.5mm pitch) package with wettable flank leads for automated optical inspection (AOI) and reliable solder joint formation in high-volume manufacturing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62865RQYR and RT7295BGJ6F, the MP2152DGTF-P uniquely balances ultra-low IQ (25μA), integrated fast discharge, adjustable output, and SOT563 footprint-making it optimal for space- and battery-constrained portable designs requiring design flexibility.

Availability

MP2152DGTF-P is available at Aetrix Electronics and suitable for solid-state drives, portable instruments, and battery-powered wireless sensor nodes requiring stable component supply with consistent parametric performance across production lots.

Supply support for MP2152DGTF-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-efficiency, high-reliability power management ICs for computing, automotive, industrial, and consumer markets.

The MP2152D product line delivers ultra-compact, low-IQ synchronous buck converters targeting space-constrained, battery-sensitive applications such as SSDs, wearables, and portable instrumentation-emphasizing integration, thermal robustness, and ease of layout.

FAQ

What is the maximum recommended PCB temperature rise for MP2152DGTF-P at 2A load?

At 2A continuous output current with 5V input and 1.2V output, the SOT563 package exhibits a typical case temperature rise of 25°C above ambient on a 2-layer JEDEC board. Derating is required above 85°C ambient; full 2A output is guaranteed only up to 60°C ambient with adequate copper pour and airflow.

Can MP2152DGTF-P operate with a 100nF output capacitor?

No. A minimum 22μF X5R/X7R ceramic output capacitor is required to maintain stability and limit output ripple to <20mV under 2A load transients. Using 100nF would cause severe VOUT oscillation, failure to regulate, and potential OVP triggering due to excessive ∆VOUT.

Does the EN pin support partial enable for power sequencing?

No. The EN pin is a digital on/off control with 1.2V logic-high threshold and 0.4V logic-low threshold. It does not support analog dimming or intermediate states. For precise sequencing, pair with an external supervisor IC or RC delay network on EN.

Is the 13Ω output discharge path rated for continuous operation?

No. The internal discharge FET is designed for brief post-shutdown discharge only (typically <10ms). Continuous activation will exceed SOA limits and trigger thermal shutdown. Do not tie EN low while VOUT remains energized from external sources.

What is the minimum inductor DCR allowed for stable operation?

The inductor must have DCR ≤ 50mΩ to ensure accurate current limiting and avoid premature OCP triggering. Lower DCR (e.g., 10–20mΩ) improves efficiency but requires verification that peak inductor current stays within the 4A HS-FET limit under worst-case VIN/VOUT conditions.

How does the MP2152DGTF-P behave during input undervoltage lockout (UVLO)?

When VIN drops below 2.45V (typical rising threshold), the device disables switching and enters shutdown with 1μA current draw. It remains latched off until VIN rises above 2.65V (2.45V + 200mV hysteresis), preventing erratic restarts during brownout conditions.

Can the FB pin be left floating if using a fixed-output variant?

No. The FB pin must always be connected to the resistor divider or a valid voltage source. Floating FB causes uncontrolled VOUT, potential OVP activation, and unstable operation. Even with fixed-output alternatives, FB is internally tied to the error amplifier and cannot be omitted.