Το εταιρικό blog για Mingjiada Supplies MPS MP2497: 3A/50V/100kHz Monolithic Buck Switch-Mode Converter

Mingjiada Electronics maintains a long-term stock of the MPS MP2497 series (MP2497GN, MP2497GN-A-Z, etc.), 3A/50V/100kHz buck converters. These are genuine, factory-direct products that ship the same day and support BOM order fulfillment. When purchasing MPS chips, turn to Mingjiada for peace of mind, time savings, and cost efficiency.

MP2497 Key Specifications at a Glance

The MP2497 is a monolithic buck switching mode regulator that employs a current-mode control architecture. Its key parameters are as follows:

Input Voltage Range: 4.5V – 50V

Maximum Output Current: 3A continuous

Output Voltage Range: 0.8V – 25V adjustable (some documentation specifies 0.8V–15V; refer to the specific model’s data sheet for accuracy)

Switching frequency: Fixed at 100 kHz

Internal power MOSFET on-resistance: 0.15 Ω

Quiescent current (typical): 1.2 mA

Package: SOIC-8 / SOIC-8E (with exposed pads)

Operating junction temperature: –40°C to +125°C

With an input upper limit of up to 50V, the MP2497 can easily handle voltage fluctuations in 12V, 24V, and even 48V bus systems, while its 3A continuous output capability meets the power requirements of most medium-power loads.

Features Designed for Reliability and Ease of Use

The value of the MP2497 extends beyond the numbers on the spec sheet and is further demonstrated by a series of integrated features designed for practical engineering applications.

Programmable Output Overvoltage Protection (OVP)

The MP2497 allows designers to flexibly set the output overvoltage protection threshold via an external resistor. When an output voltage exceeds the set threshold due to a feedback loop anomaly or sudden load change, the chip responds rapidly to prevent damage to downstream sensitive circuits. This feature is particularly critical in applications with stringent output voltage safety requirements, such as USB PD adapters and in-vehicle chargers.

Hiccup Mode Current Limiting and Short-Circuit Protection

Output short circuits are among the most common failure conditions in power supply design. The MP2497 employs hiccup mode current limiting protection: upon detecting a short circuit, the chip enters a periodic restart state, controlling the average short-circuit current to a safe level. This not only protects the chip itself but also reduces thermal stress on external components. Once the short-circuit condition is resolved, the system automatically resumes output.

Internal Soft-Start and Low EMI Characteristics

The chip features a built-in soft-start function with a duration of 2 ms to 4 ms, which effectively suppresses inrush current during power-up, preventing the input power supply from being overloaded or triggering upstream protection circuits. Additionally, the MP2497 achieves low electromagnetic interference (EMI) characteristics through a well-controlled switching edge design, helping the system pass radiated emission tests more quickly and reducing the need for repeated iterations to address EMI issues later in the development process.

Output Line Voltage Drop Compensation

In applications with high load currents, PCB trace resistance and connector contact resistance introduce significant line voltage drops, causing the actual voltage at the load to fall below the set value. The MP2497’s integrated output line voltage drop compensation automatically boosts the output voltage based on load conditions, ensuring that remote loads receive a stable supply voltage.

Typical Applications

With its wide input range, 3A output capability, and comprehensive protection mechanisms, the MP2497 is suitable for the following applications:

USB Power and Charging Adapters: Steps down voltage from 12V or 24V adapters to 5V/9V/12V USB power rails; programmable OVP provides additional safety protection for VBUS.

Car Cigarette Lighter Adapters: Since automotive battery voltages fluctuate significantly during cold starts and load dump conditions, the 4.5V–50V input range provides ample margin, while the –40°C to +125°C junction temperature range accommodates the harsh temperature environments both inside and outside the vehicle.

Pre-regulator for Linear Chargers: Provides pre-regulation for downstream linear charging ICs, while hiccup mode short-circuit protection safeguards the front-end circuitry in the event of battery-side anomalies.

Industrial Distributed Power Supplies: Steps down 24V industrial bus voltage to logic levels; the fixed 100kHz frequency simplifies inductor and capacitor selection, shortening the design cycle.

Why Choose Mingjiada for the MP2497

Direct from the manufacturer, with a guarantee of authenticity. Since its establishment in 1996, Mingjiada Electronics has obtained ISO 9001 and ISO 14001 international management system certifications and has established stable partnerships with over 500 manufacturers worldwide. All MP2497 series chips are sourced directly from the manufacturer or authorized channels, eliminating refurbished or loose new components to ensure material quality from the source.

Full-range stock coverage. Mingjiada maintains a constant inventory of mainstream MP2497 and MP2497GN-A-Z packages and form factors. We also offer full-order fulfillment based on customer BOMs, reducing the fragmented lead times associated with consolidating orders from multiple suppliers. Same-day shipping is available from our domestic warehouse, facilitating a seamless transition from R&D prototyping to mass production ramp-up.

Full Lifecycle Supply Capability. From small-batch procurement during the sample phase to rolling inventory preparation for mass production, Mingjiada provides supply support for the MP2497 throughout the entire project lifecycle. We also collaborate with customers on alternative component evaluations and inventory planning to mitigate the risk of supply chain disruptions.

Mingjiada Electronics—Your trusted MPS power chip supply partner. The full MP2497 series is in stock; please feel free to inquire about part numbers, request samples, or get volume quotes.

Tags: MP2497GN, MP2497G, MP2497