Monolithic Power Systems Inc. MP2152GQFU-12-P

Overview

MP2152GQFU-12-P from Monolithic Power Systems is a fixed-output 1.2V, 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 power MOSFETs. It delivers stable regulation from 2.5V–5.5V input for low-power portable systems requiring ultra-low standby power and fast transient response.

For engineers reviewing the MP2152GQFU-12-P datasheet, MP2152GQFU-12-P pinout, MP2152GQFU-12-P application, or MP2152GQFU-12-P equivalent, key selection criteria include its fixed 1.2V output with ±1% FB accuracy, output discharge capability, EN-controlled sequencing, thermal shutdown at 160°C, and compatibility with compact 1µH inductors and 22µF ceramic output capacitors.

Technical Context

The MP2152GQFU-12-P employs constant-on-time (COT) control with input voltage feed-forward to maintain stable 1.1MHz switching across 2.5V–5.5V input and 1.2V output, enabling fast load transient response without external compensation. Its internal high-side P-MOSFET (75mΩ) and low-side N-MOSFET (45mΩ) support up to 2A continuous output with 100% duty-cycle capability for low-dropout operation.

Fault protection includes cycle-by-cycle current limiting (2.8A peak), hiccup-mode short-circuit protection, VOUT over-voltage protection (115% of 1.2V = 1.38V), absolute VIN OVP (6.1V), and thermal shutdown with 30°C hysteresis. The device enters sleep mode at light loads to sustain 25μA IQ while maintaining regulation via valley FB sensing.

Key Specifications

Pinout & Package

MP2152GQFU-12-P uses a 6-pin UTQFN package (1.2mm × 1.6mm, 0.4mm pitch) with wettable flanks for automated optical inspection. Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise orientation from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS6286412RQYR and RTQ2132BGQW, MP2152GQFU-12-P offers balanced performance: its 1.1MHz fSW eases EMI filtering versus 2MHz alternatives, its integrated output discharge simplifies power sequencing versus RTQ2132BGQW, and its 30–35μA IQ provides better light-load efficiency than TPS6286412RQYR's 250nA only below 100μA load.

Availability

MP2152GQFU-12-P is available at Aetrix Electronics and suitable for wireless networking cards, portable medical instruments, industrial IoT edge sensors, and low-power SSD controllers requiring stable component supply across production lifecycles.

Supply support for MP2152GQFU-12-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2152 product line targets ultra-compact, battery-sensitive applications-delivering high-efficiency DC/DC conversion in sub-2mm² packages with industry-leading quiescent current and integrated protection features.

FAQ

What is the recommended input capacitor for MP2152GQFU-12-P?

A minimum 10µF X5R/X7R ceramic capacitor rated for ≥6.3V must be placed within 2mm of the VIN and GND pins. For optimal ripple suppression and transient response, pair it with a 1µF high-frequency ceramic capacitor in parallel. Total effective capacitance should exceed 12µF with ESR <10mΩ to prevent input voltage droop during 2A load steps.

Does MP2152GQFU-12-P require an external feedback resistor divider?

No. MP2152GQFU-12-P is a fixed-output variant with internal resistor network setting VOUT = 1.2V; the FB pin is not connected externally. Only adjustable versions (e.g., MP2152GQFU) require external R1/R2 dividers. Using external resistors on MP2152GQFU-12-P will disrupt regulation and is not supported.

How does the output discharge function operate during shutdown?

When EN is pulled low or floats, the internal 200Ω NMOS discharge switch turns on between OUT and GND, actively discharging the output capacitor. This reduces VOUT to <100mV within 1–2ms for 22µF output capacitance, preventing back-powering of upstream circuits and enabling clean power sequencing in multi-rail systems.

Can MP2152GQFU-12-P be used with a 1.0µH inductor?

Yes. The datasheet specifies 1µH as the recommended inductance value. Use a shielded metal-alloy or multilayer chip inductor rated for ≥3A saturation current and <50mΩ DCR. At 1.2V/2A output, a 1µH inductor yields ~400kHz ripple frequency and maintains CCM operation above ~300mA load, ensuring stable regulation across the full current range.

What is the purpose of the PG pin, and how should it be terminated?

The PG pin is an open-drain output that asserts high (via external pull-up) when VFB is within –10%/+15% of 600mV (i.e., 540–690mV), indicating valid 1.2V output. Connect a 100–500kΩ resistor from PG to VIN or VOUT. Do not leave PG floating; improper termination causes undefined logic states and may interfere with system power-good monitoring.

Is MP2152GQFU-12-P RoHS-compliant and halogen-free?

Yes. MP2152GQFU-12-P is lead-free, halogen-free, and fully compliant with the EU RoHS Directive 2011/65/EU. All packaging materials meet IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and undergo rigorous green process validation per MPS Quality Assurance standards.