Monolithic Power Systems Inc. MP2152GTF-15-P

Overview

MP2152GTF-15-P from Monolithic Power Systems is a fixed-output 1.5V, 2A synchronous step-down DC/DC converter in SOT563 package, featuring 25μA quiescent current, 1.1MHz switching frequency, and integrated 75mΩ/45mΩ power MOSFETs. It delivers stable low-voltage power for battery-powered microcontrollers and RF modules with output discharge, over-voltage protection, and hiccup-mode short-circuit recovery.

For engineers reviewing the MP2152GTF-15-P datasheet, MP2152GTF-15-P pinout, MP2152GTF-15-P application, or MP2152GTF-15-P equivalent, key selection criteria include its 1.5V ±1% output accuracy across –40°C to +125°C, 2.5V–5.5V input range, EN-controlled sequencing, and thermal shutdown at 160°C - all critical for portable system power integrity.

Technical Context

The MP2152GTF-15-P uses constant-on-time (COT) control with input voltage feed-forward to maintain stable 1.1MHz switching across its 2.5V–5.5V input range and 1.5V output. Its internal high-side P-FET (75mΩ) and low-side N-FET (45mΩ) enable up to 2A continuous output with 100% duty-cycle capability for low-dropout operation.

Fault management includes cycle-by-cycle current limiting (2.8A peak), VOUT OVP (115% of 1.5V = 1.725V), absolute VIN OVP (6.1V), thermal shutdown (160°C), and hiccup-mode SCP recovery. The fixed 1.5V version integrates power-good (PG) with open-drain output and 150μs delay, but omits FB pin functionality.

Key Specifications

Pinout & Package

SOT563 (2.1mm × 1.6mm × 0.55mm) thermally enhanced 6-pin package with exposed pad (EP) tied to GND for improved heat dissipation. Pin 1 marked by dot; pin numbering follows standard SOT563 top-view orientation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output buck converter applications.

Compared with TPS62260DRVR and RT7297BGJ6F, MP2152GTF-15-P uniquely combines 1.5V precision, output discharge, and PG in SOT563 - enabling single-chip compliance with both safety-critical discharge requirements and deterministic boot sequencing in space-constrained designs.

Availability

MP2152GTF-15-P is available at Aetrix Electronics and suitable for battery-powered medical monitors, wireless sensor networks, industrial I/O modules, and smart wearable controllers requiring stable component supply and long-term production continuity.

Supply support for MP2152GTF-15-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 analog and power ICs, with design centers in the US, China, and Taiwan.

The MP2152 product line targets ultra-low-power portable and battery-operated systems, delivering high integration, minimal external components, and robust protection features in miniature packages for space- and energy-constrained applications.

FAQ

What is the maximum allowable input voltage for MP2152GTF-15-P?

The absolute maximum input voltage is 6.5V, but the recommended operating range is strictly 2.5V to 5.5V. Exceeding 5.5V risks triggering absolute VIN over-voltage protection at 6.1V, which halts switching until VIN drops below 5.7V. Operation above 5.5V is not characterized and may compromise reliability or lifetime.

Does MP2152GTF-15-P require an external feedback resistor divider?

No. The MP2152GTF-15-P is a fixed-output variant with internal feedback network set to 1.5V; the FB pin is omitted in this version. Only adjustable versions (e.g., MP2152GTF) use external resistors. This eliminates resistor tolerance errors and saves board space in cost-sensitive designs.

How does the output discharge function operate during shutdown?

When EN is pulled low, the internal 200Ω discharge FET activates between OUT and GND, discharging the output capacitor. This occurs automatically without external components and completes within ~1ms for a typical 22μF output cap, preventing back-powering of upstream circuitry or unintended wake-up events.

Can MP2152GTF-15-P drive a 2A load continuously at 85°C ambient?

Yes, but with derating. At TA = 85°C and VIN = 5V, the maximum continuous output current is ~1.6A (per Figure 9, "Output Current Derating vs. Ambient Temperature"). Full 2A operation requires ≤65°C ambient or enhanced PCB copper pour/thermal vias under the EP pad to maintain junction temperature ≤125°C.

What is the purpose of the PG pin, and what pull-up resistor value is recommended?

The PG pin is an open-drain power-good indicator that pulls low when VOUT deviates >±5% from 1.5V and floats high otherwise. A 220kΩ pull-up resistor to VIN is recommended - it ensures sufficient sink current (>1mA) for logic-level detection while minimizing standby current (<23nA).

Is the SOT563 package RoHS-compliant and lead-free?

Yes. MP2152GTF-15-P is fully RoHS-compliant, lead-free, and halogen-free per MPS green status documentation. The SOT563 package uses matte tin (Sn) plating and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) for unlimited floor life at ≤30°C/85% RH.

Does MP2152GTF-15-P support forced PWM or discontinuous conduction mode (DCM)?

No. MP2152GTF-15-P operates exclusively in automatic mode using advanced asynchronous modulation (AAM) at light loads and COT control at medium/heavy loads. It has no external pin or register to force PWM; DCM occurs naturally below ~150mA load, improving light-load efficiency without audible noise.