Monolithic Power Systems Inc. MP2330CGTL-P

Overview

MP2330CGTL-P from Monolithic Power Systems is a fully integrated synchronous step-down DC/DC converter delivering 3A continuous output current with 4.2V–24V input range, 650kHz fixed switching frequency, and forced CCM operation in a 1.6mm×2.1mm SOT583 package. It integrates 75mΩ/40mΩ high- and low-side MOSFETs, supports pre-bias start-up, and provides power-good (PG), soft-start (SS), and comprehensive protection for point-of-load regulation in compact consumer electronics.

For engineers reviewing the MP2330CGTL-P datasheet, MP2330CGTL-P pinout, MP2330CGTL-P application, or MP2330CGTL-P equivalent, key selection criteria include its COT control architecture for fast transient response, 200µA quiescent current at light load, ±1.5% FB reference accuracy, thermal shutdown at 150°C, and compatibility with ceramic output capacitors down to 22µF for 3.3V/3A operation.

Technical Context

The MP2330CGTL-P employs constant-on-time (COT) control with internal ramp compensation, enabling stable regulation across wide VIN and VOUT ranges without external loop compensation. Its valley-current sensing enables precise over-current protection with hiccup recovery, while the bootstrap circuit maintains ≥3.3V gate drive for the high-side N-channel MOSFET during continuous conduction.

It operates exclusively in forced PWM mode-no diode emulation or discontinuous conduction-ensuring predictable 650kHz switching regardless of load. The PG pin implements dual-threshold UV/OV detection (87–97% and 102–125% of 805mV reference) with 50µs rising / 35µs falling delay, and the SS pin accepts an external capacitor to program soft-start time via a 7.3µA internal current source.

Key Specifications

Pinout & Package

MP2330CGTL-P is housed in a thermally enhanced SOT583 (1.6mm × 2.1mm, 0.55mm height) package with exposed thermal pad. Pin 4 (GND) and the underside thermal pad must be soldered to a dedicated copper pour for θ_JA = 55°C/W performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RT6220AGQW and TPS54332DR, the MP2330CGTL-P uniquely combines forced CCM, pre-bias start-up, and tight PG thresholds in a sub-4mm² package-making it optimal for space-constrained, high-reliability consumer and industrial point-of-load designs where rail sequencing and inrush control are critical.

Availability

MP2330CGTL-P is available at Aetrix Electronics and suitable for game consoles, digital set-top boxes, flat-panel television power supplies, and industrial HMI subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP2330CGTL-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 power management ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2330C product line targets compact, high-efficiency DC/DC conversion for consumer electronics and industrial edge devices-emphasizing integration, thermal robustness, and ease of layout in ultra-small packages like SOT583.

FAQ

What is the minimum recommended output capacitance for stable 3.3V/3A operation?

The MP2330CGTL-P requires ≥22µF total ceramic output capacitance (X5R/X7R) for stable 3.3V/3A operation. This value ensures sufficient phase margin and limits output voltage deviation to <±1.5% under full-load transients. Using multiple parallel 10µF/0805 capacitors improves high-frequency ESR and reduces thermal stress versus a single large capacitor.

Does MP2330CGTL-P support adjustable switching frequency?

No. The MP2330CGTL-P operates at a fixed 650kHz switching frequency determined by its internal constant-on-time (COT) control architecture. Frequency varies by ±15% across temperature and input voltage per datasheet (485–815kHz), but it is not user-adjustable via external components or pins.

Can the PG pin drive a microcontroller GPIO directly?

Yes-the PG pin is an open-drain output rated for 1mA sink current at 0.4V. It can directly interface with 3.3V or 5V GPIO inputs using a pull-up resistor (e.g., 10kΩ to VOUT or system rail). No level-shifting is required, but ensure the pull-up does not exceed the GPIO's input leakage specification during PG low state.

How is thermal performance affected if the SOT583 thermal pad is not soldered?

Omitting thermal pad soldering increases junction-to-ambient thermal resistance from 55°C/W to >130°C/W. At 3A load and 24V input, this causes junction temperature to exceed 150°C within seconds, triggering thermal shutdown. Full thermal pad connection to ≥1cm² internal GND plane is mandatory for rated operation.

What happens during pre-bias start-up when VOUT is already at 3.3V?

During pre-bias start-up, the MP2330CGTL-P monitors FB voltage and refreshes the BST capacitor before enabling switching. If VOUT ≥ 0.8 × VREF at startup, the device enters "monotonic start-up" mode: it delays switching until BST reaches 2.2V, then ramps output voltage upward from the pre-bias level using SS-controlled soft-start-preventing reverse current or output collapse.

Is the SS capacitor polarity-sensitive?

No. The SS pin connects to an internal 7.3µA current source charging an external capacitor to generate soft-start voltage. Standard ceramic or tantalum capacitors (non-polarized or polarized with correct orientation) may be used. For reliable monotonic ramp, avoid electrolytics with high leakage; 1nF–100nF X7R ceramics are preferred.

What is the maximum allowable input voltage surge the MP2330CGTL-P can withstand?

The absolute maximum VIN rating is 26V for continuous operation. Short-duration surges up to 28V are allowed for <10ns per datasheet; longer surges exceeding 26V risk permanent damage to the internal high-side MOSFET and gate driver. External TVS clamping is recommended for automotive or industrial environments with load-dump transients.