Monolithic Power Systems Inc. MP2333HGTL-P

Overview

MP2333HGTL-P from Monolithic Power Systems is a fully integrated 4.2–18V input, 3A synchronous buck converter with constant-on-time (COT) control, 1.2MHz switching frequency, power good (PG) open-drain output, and programmable soft-start-designed for compact point-of-load regulation in game consoles and flat-panel displays.

For engineers reviewing the MP2333HGTL-P datasheet, MP2333HGTL-P pinout, MP2333HGTL-P application, or MP2333HGTL-P equivalent, key selection factors include its 75mΩ/40mΩ internal MOSFET R_DS(ON), 200µA quiescent current, pre-bias start-up capability, forced PWM operation, and SOT583 (1.6×2.0mm) thermal performance with θ_JA = 55°C/W on 2-layer PCB.

Technical Context

The MP2333HGTL-P implements constant-on-time (COT) control with input- and output-voltage-dependent on-timer to maintain stable ~1.2MHz switching across 4.2–18V input while delivering up to 3A continuous output current. Its valley-current sensing enables over-current protection with hiccup recovery and supports monotonic start-up into pre-biased outputs.

It integrates high-side (75mΩ) and low-side (40mΩ) N-channel MOSFETs, a bootstrap regulator with 2.2V UVLO, and a precision 805mV feedback reference (±2.5mV). The PG pin asserts high only after soft-start completion and when V_OUT remains within 87–120% of V_REF, with 50µs rising and 35µs falling delay.

Key Specifications

Pinout & Package

SOT583 (1.6mm × 2.0mm, 0.55mm height) thermally enhanced package with exposed pad for improved heat dissipation; 8-pin layout optimized for minimal loop area and high-frequency stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MP2333HGTL-P, MP2333GQVE-18 offers superior thermal performance but sacrifices miniaturization, while RT7295BGJ8F trades PG functionality and efficiency for frequency flexibility - making MP2333HGTL-P optimal for space-constrained, PG-critical consumer electronics.

Availability

MP2333HGTL-P is available at Aetrix Electronics and suitable for game consoles, digital set-top boxes, and flat-panel television designs requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for MP2333HGTL-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 MP2333H belongs to MPS's high-density DC/DC converter product line, engineered for ultra-compact, high-efficiency point-of-load regulation in consumer electronics where thermal constraints and board area are critical.

FAQ

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

The MP2333HGTL-P requires ≥22µF total ceramic output capacitance (X5R/X7R) placed adjacent to the IC for stable COT control. For 3.3V/3A operation with 1.5µH inductor, 47µF is recommended to limit output ripple to <20mV peak-to-peak and ensure adequate load transient response.

Can the MP2333HGTL-P safely start into a pre-biased output voltage?

Yes - the MP2333HGTL-P supports monotonic pre-bias start-up. When V_OUT is pre-charged, the internal BST refresh circuit and SS charging mechanism coordinate to avoid reverse current flow; the device begins switching only after V_SS/2 exceeds the sensed FB voltage.

How is the soft-start time calculated, and what capacitor value yields 2ms?

Soft-start time is calculated as T_SS ≈ (2 × V_REF × C_SS) / I_SS, where V_REF = 0.805V and I_SS = 7.3µA (typ). For T_SS = 2ms, C_SS ≈ 18nF - use a 18nF ±10% NP0/C0G capacitor directly at the SS pin with short trace to GND.

Does the PG pin require an external pull-up resistor, and what value is recommended?

Yes - PG is open-drain and requires an external pull-up. A 10kΩ resistor to 3.3V or 5V is recommended for fast rise time (<1µs) and compatibility with standard logic inputs; values up to 100kΩ are acceptable for low-power monitoring with µC GPIO.

What is the maximum allowable output capacitor value to avoid soft-start failure?

The maximum output capacitance is limited by soft-start current: C_{O_MAX} ≈ (I_{LIM_AVG} − I_OUT) × T_SS / V_OUT. With I_{LIM_AVG} ≈ 2.5A, T_SS = 2ms, and V_OUT = 3.3V, C_{O_MAX} ≈ 1500µF. Exceeding this may prevent V_OUT from reaching regulation before SS completes.

Is the MP2333HGTL-P RoHS-compliant and halogen-free?

Yes - MP2333HGTL-P is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and JEDEC JS709. Full compliance documentation, including material declarations and test reports, is available on the MPS Quality Assurance portal.

What PCB layout practices are critical for EMI reduction?

Minimize SW node area; place input capacitor ≤1mm from IN/GND pins; use solid ground plane under IC; separate power and feedback traces; route FB and SS away from SW and inductor; connect exposed pad to GND with ≥4 thermal vias.