Monolithic Power Systems Inc. MP2152GQFU-25-P

Overview

MP2152GQFU-25-P from Monolithic Power Systems is a fixed-output 2.5V, 2A synchronous step-down DC/DC converter in a 1.2mm×1.6mm UTQFN package, featuring 25μA quiescent current, 1.1MHz switching frequency, and integrated 75mΩ/45mΩ MOSFETs. It delivers stable power to low-voltage I/O rails in portable instruments and battery-powered devices with output discharge and over-voltage protection.

For engineers reviewing the MP2152GQFU-25-P datasheet, MP2152GQFU-25-P pinout, MP2152GQFU-25-P application, or MP2152GQFU-25-P equivalent, key selection criteria include its fixed 2.5V output accuracy (±1%), 25μA IQ for ultra-low-power standby, EN-controlled sequencing, thermal shutdown at 160°C, and compatibility with compact 1μH inductors and 22μF ceramic output capacitors.

Technical Context

The MP2152GQFU-25-P employs constant-on-time (COT) control with input voltage feed-forward to maintain stable 1.1MHz operation across 2.5V–5.5V input range and ensure fast transient response. Its internal high-side P-MOSFET (75mΩ) and low-side N-MOSFET (45mΩ) enable up to 2A continuous output with 100% duty-cycle capability for low-dropout operation.

It integrates output discharge via an internal MOSFET (200Ω path), VOUT OVP (115% threshold with 10% hysteresis), short-circuit hiccup mode, and thermal shutdown (160°C with 30°C hysteresis). The fixed 2.5V version includes a power-good (PG) open-drain output with ±5% window detection and 150μs delay.

Key Specifications

Pinout & Package

MP2152GQFU-25-P uses a 6-pin UTQFN package (1.2mm × 1.6mm, 0.4mm pitch) with wettable flanks for automated optical inspection. Thermal pad on underside improves θJA to 65°C/W (EV2152-QFU-00A board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS6286518RTER and ADP5302AUJZ-2.5-R7, MP2152GQFU-25-P uniquely delivers 2A at 2.5V with 35μA IQ in a 1.2×1.6mm footprint - making it the sole option among these three for space-constrained, high-current 2.5V applications requiring both efficiency and reliability.

Availability

MP2152GQFU-25-P is available at Aetrix Electronics and suitable for portable instruments, battery-powered devices, and low-voltage I/O system power requiring stable component supply across industrial temperature ranges (–40°C to +125°C) and long-lifecycle production.

Supply support for MP2152GQFU-25-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 over 20 years of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The MP2152 product line targets ultra-low-power, space-constrained portable and battery-operated systems, emphasizing minimal quiescent current, integrated power stages, and robust protection features for reliable operation in consumer and industrial edge devices.

FAQ

What is the recommended input capacitor for MP2152GQFU-25-P?

A 4.7μF to 10μF X5R or X7R ceramic capacitor placed within 2mm of the VIN and GND pins is required. Use low-ESR types (≤10mΩ) and place close to minimize high-frequency loop inductance. A 0.1μF ceramic capacitor in parallel further suppresses high-frequency noise.

Does MP2152GQFU-25-P require an external feedback resistor network?

No. MP2152GQFU-25-P is a fixed-output variant with internal resistor divider set to 2.5V; no external FB resistors are needed. The FB pin is not connected in this version - only the adjustable MP2152GQFU requires external R1/R2.

How does the output discharge function operate during shutdown?

When EN is pulled low or left floating, the internal discharge MOSFET turns on, connecting OUT to GND through a ~200Ω path. This actively discharges the output capacitor within milliseconds, ensuring rapid rail collapse for safe system reset and preventing back-powering of upstream circuitry.

Can MP2152GQFU-25-P be used with a 1.0μH inductor?

Yes. The datasheet recommends 1.0–2.2μH shielded inductors (e.g., Würth 74437324010). At 1.0μH and 2.5V output, peak inductor current remains within safe limits up to 2A load, and 1.1MHz operation ensures low core loss and compact size.

What is the power-good (PG) assertion threshold accuracy?

PG asserts high when VOUT is within ±5% of 2.5V (2.375V to 2.625V) and deasserts below 85% (2.125V) or above 115% (2.875V) of nominal. The 150μs delay ensures stable regulation before signaling readiness to downstream logic or sequencers.

Is thermal derating required for continuous 2A operation at 85°C ambient?

Yes. With θJA = 65°C/W on a 2-layer EV2152-QFU-00A board, 2A load at 85°C ambient yields junction temperature ≈ 85°C + (2A² × 0.045Ω × 65°C/W) ≈ 112°C - within the 125°C max TJ limit. For 4-layer boards, derating is less aggressive due to lower effective θJA.

Does MP2152GQFU-25-P support forced PWM or auto-mode switching?

No. It operates exclusively in constant-on-time (COT) mode with automatic transition between continuous conduction mode (CCM), discontinuous conduction mode (DCM), and sleep mode based on load. There is no external pin or register to force PWM; light-load efficiency is managed via AAM and ZCD circuits.