Monolithic Power Systems Inc. MP2030DU-LF-P

Overview

MP2030DU-LF-P from Monolithic Power Systems is a dual-supply very low dropout linear regulator delivering up to 3A output current with 150mV dropout at full load, adjustable output from 0.9V to 3.6V, and 0.5V feedback reference. It employs separate BIAS and VIN supplies to decouple internal circuitry power from output path-enabling high-efficiency regulation near input voltage limits. Used in post-regulation for buck converters in telecom infrastructure and server power rails.

For engineers reviewing the MP2030DU-LF-P datasheet, MP2030DU-LF-P pinout, MP2030DU-LF-P application, or MP2030DU-LF-P equivalent, key selection criteria include dual-supply architecture compatibility, 220µA BIAS supply current, thermal protection hysteresis (15°C), ultra-low ESR capacitor stability (≥1µF), and QFN32 package thermal resistance (θJA = 36°C/W).

Technical Context

The MP2030DU-LF-P implements an NMOS pass device driven by a dedicated BIAS supply (2.5–5.5V) that powers internal reference, error amplifier, and gate drive circuitry-decoupling control logic from high-current VIN-to-VOUT path. This architecture enables stable regulation even when VIN is only 0.2V above VOUT.

It features a 0.5V precision feedback threshold with ±2% output accuracy, 32dB PSRR at 100kHz, and fast transient response enabled by internal soft-start (550µs) and open-drain PGOOD with 160µs delay. Thermal shutdown activates at 135°C with 15°C hysteresis, and current limit triggers at ~4.5A.

Key Specifications

Pinout & Package

MP2030DU-LF-P is housed in a RoHS-compliant 5mm × 5mm QFN-32 package with exposed thermal pad on underside. Pin count and layout match JEDEC MO-229 VEED-5 standard; land pattern requires solder paste stencil design per manufacturer recommendations.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply LDO applications.

Compared with TPS7A8300RGRT and LT3086EFE#PBF, MP2030DU-LF-P uniquely enables high-current regulation with minimal VIN–VOUT differential via its dedicated BIAS supply-making it optimal for post-buck applications where efficiency, thermal density, and sequencing control are prioritized over absolute minimum noise.

Availability

MP2030DU-LF-P is available at Aetrix Electronics and suitable for network infrastructure, server power management, and telecom baseband processing requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2030DU-LF-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.

The MP2030 product line targets high-efficiency, high-current post-regulation in telecom, computing, and consumer infrastructure-leveraging dual-supply architecture to overcome traditional LDO thermal and dropout limitations.

FAQ

What is the minimum required BIAS voltage for MP2030DU-LF-P startup?

The MP2030DU-LF-P incorporates under-voltage lockout on the BIAS pin with a 2.35V threshold and ~90mV hysteresis. Startup occurs only when BIAS exceeds 2.35V; operation is guaranteed from 2.5V to 5.5V per datasheet specifications. Below 2.35V, the device remains disabled and draws <1µA.

Can MP2030DU-LF-P operate with VIN = 1.2V and VOUT = 1.1V?

Yes-MP2030DU-LF-P supports VIN as low as 1.1V and can regulate down to 0.9V output. With VOUT = 1.1V, the minimum recommended VIN is VOUT + 0.2V = 1.3V per design guidelines. At 1.2V VIN, regulation is not guaranteed due to insufficient headroom for the 150mV dropout and internal bias margins.

How should the BYPASS pin be connected?

The BYPASS pin requires a 1nF ceramic capacitor connected directly to ground-no resistors, ferrites, or other components may be placed in series or parallel. This capacitor sets the internal soft-start time (550µs) and resets fault conditions; incorrect connection causes startup failure or uncontrolled turn-on current surge.

Is the exposed thermal pad electrically connected internally?

Yes-the exposed pad on the QFN32 package is internally connected to GND and serves as both the primary thermal path and electrical ground return. It must be soldered to a solid PCB copper pour tied to the system ground plane; thermal vias (≥6×0.3mm) are recommended beneath the pad to achieve θJA = 36°C/W.

What is the maximum allowable output capacitance?

The MP2030DU-LF-P is stable with ceramic output capacitors ≥4.7µF per VOUT pin (20–23), and no upper limit is specified. However, large bulk capacitance (>100µF) may increase soft-start time and inrush current; for designs requiring >50µF, verify transient response and startup behavior with actual load conditions.

Does MP2030DU-LF-P support remote sensing?

No-MP2030DU-LF-P uses single-point feedback via the FB pin connected to the VOUT net. It does not provide dedicated sense pins or Kelvin connections. For applications requiring millivolt-level regulation accuracy across PCB traces, external compensation or a remote-sense LDO (e.g., LT308x series) must be selected instead.

What is the function of the NC pins on the QFN32 package?

Pins 1, 9–16, 24–32 are No-Connect (NC) and must remain unconnected-neither tied to GND nor routed. These pins have no internal bond wires or circuitry; connecting them risks parasitic coupling, ESD susceptibility, or mechanical stress on the die. Follow MPS land pattern guidelines strictly for routing clearance.