MAXM17514ALI+ - 4A 2.4-5.5V Step-Down Power Module | Maxim
MPN： MAXM17514ALI+ ✓ 啟用中MAXM17514ALI+ 概覽
A step-down (buck) DC-DC converter is a switching voltage regulator that efficiently reduces a higher DC input voltage to a lower DC output voltage by rapidly switching an inductor and rectifying the resulting waveform. Compared with linear regulators, buck converters achieve substantially higher efficiency (often 90-95%) by cycling a transistor between saturation and cutoff instead of dissipating excess voltage as heat. Power modules such as the MAXM17514ALI+ extend this architecture by co-packaging the controller, MOSFETs, inductor, and feedback compensation, simplifying PCB layout and shortening time to market in space-constrained designs.
Key specifications include a 2.4V to 5.5V input voltage window, 0.75V to 3.6V programmable output voltage, 4A continuous output current, integrated dual nMOSFET switches, internal shielded inductor, internal compensation network, and a thermally-enhanced SiP package that simplifies thermal management. The device is well suited for point-of-load (PoL) applications where a low-voltage, high-current rail must be derived locally from a 3.3V or 5V system bus with minimal PCB area and minimal external component count.
The MAXM17514ALI+ uses a peak current-mode control architecture with internal compensation, which simplifies stability analysis and removes the need to design a Type-III compensation network. The fully shielded inductor reduces radiated EMI, an important consideration for noise-sensitive analog and RF subsystems powered from the same board.
Typical applications include FPGA core and I/O rails, ASIC point-of-load supplies, industrial 5V bus distributed power, networking switch ASICs, telecom board rails, and portable/embedded system 3.3V-to-1.xV conversion. The wide input range makes it compatible with both 3.3V and 5V system buses without external front-end regulation.
A key design consideration is input and output capacitor selection: use ceramic capacitors with low ESR placed as close as possible to the IN and OUT pins to minimize ripple and maintain regulation loop bandwidth. Ensure the upstream 5V or 3.3V source can supply the full 4A load transient.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, enabling faster component selection and supply chain decisions.
直接替換替代品，適用於 MAXM17514ALI+ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
MAXM17515ALI+
✅ 直接替換📋 參考替代品（不在目錄中）
MAXM17504ALI+
✅ 直接替換📋 參考替代品（不在目錄中）
MAXM17516ALI+
✅ 直接替換📋 參考替代品（不在目錄中）
MAXM17503ALI+
✅ 直接替換📋 參考替代品（不在目錄中）
MAXM17514ALI+ 最大額定值與電氣特性
| 拓撲 | Buck (Step-Down) |
| 功能 | Non-Isolated PoL Module DC-DC Converter |
| 輸入電壓範圍 | 2.4 V to 5.5 V |
| 輸出電壓範圍 | 0.75 V to 3.6 V (programmable) |
| 最大輸出電流 | 4 A |
| 輸出配置 | Positive |
| 輸出數量 | 1 |
| Switch Type | Dual n-channel MOSFET (integrated) |
| Inductor | Fully shielded (integrated) |
| Compensation | Internal |
| Package Type | System-in-Package (SiP) - thermally enhanced |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| 效率 | High (typical buck topology) |
MAXM17514ALI+ system-in-package (sip) - thermally enhanced 腳位配置指南
MAXM17514ALI+（system-in-package (sip) - thermally enhanced 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： MAXM17514ALI+.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAXM17514ALI+ 適用於 6 應用s: FPGA Core and I/O Voltage Rails, ASIC Point-of-Load (PoL) Supplies, Industrial 5V Bus Distributed Power, Networking Switch ASIC Power, Telecom Board Local Regulation, Embedded System 3.3V-to-1.xV Conversion.
FPGA Core and I/O Voltage Rails
The MAXM17514ALI+ delivers 0.75V to 3.6V at 4A, directly serving mid-range FPGA core rails (0.85V, 1.0V, 1.2V) and aux I/O voltages (1.8V, 2.5V, 3.3V). Its integrated inductor minimizes radiated EMI near the FPGA, which is critical for SERDES jitter performance. According to the Maxim datasheet, the device supports up to 4A continuous, covering most mid-range FPGA power budgets. Unlike a discrete buck, the SiP eliminates the inductor footprint and simplifies PCB layout in tight FPGA-adjacent areas.
推薦
ASIC Point-of-Load (PoL) Supplies
Distributed PoL architectures benefit from the MAXM17514ALI+'s compact SiP and 4A output. Placing one module per ASIC rail eliminates the long trace inductance that causes voltage droop during load transients. The 2.4V-5.5V input range accepts standard 3.3V or 5V system bus power without an upstream regulator. Internal compensation removes the need to design a Type-III network, reducing engineering time-to-market for ASIC reference designs.
推薦
Industrial 5V Bus Distributed Power
Industrial systems use a 5V rail that must be stepped down locally for digital subsystems. The MAXM17514ALI+ accepts 5V input and produces 0.75V-3.6V at 4A with high buck efficiency, minimizing heat dissipation in sealed enclosures. The thermally enhanced SiP package supports operation in industrial temperature environments. Per the Maxim datasheet, this module is designed for industrial distributed architectures where a 5V backplane powers multiple PoL modules.
推薦
Networking Switch ASIC Power
Networking switches require low-voltage, high-current rails for switch ASICs and PHYs. The MAXM17514ALI+'s 4A output and 0.75-3.6V range supports common switch ASIC core voltages (0.9V, 1.0V, 1.2V), and the fully shielded inductor reduces EMI that could couple into adjacent high-speed SerDes channels. Its small footprint allows dense placement near each ASIC, minimizing PDN impedance.
推薦
Telecom Board Local Regulation
Telecom boards derive 3.3V or 5V from a backplane and need local step-down to ASIC and DSP core levels. The MAXM17514ALI+'s 2.4V-5.5V input covers both bus voltages without a front-end regulator. The internal nMOSFETs and inductor enable efficient conversion at telecom load currents up to 4A. The SiP footprint reduces PCB area versus discrete buck solutions.
推薦
Embedded System 3.3V-to-1.xV Conversion
Embedded processors increasingly require sub-1V cores powered from a 3.3V system rail. The MAXM17514ALI+ steps 3.3V down to 0.75-1.2V at 4A, supporting ARM Cortex-A cores, DSPs, and SoCs. High buck efficiency reduces battery drain in portable embedded designs. The internal compensation network eliminates loop design time versus discrete buck controllers.
推薦
推薦產品摘要
工程參考資料，適用於 MAXM17514ALI+ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAXM17515ALI+ | MAXM17504ALI+ | MAXM17516ALI+ | MAXM17503ALI+ |
|---|---|---|---|---|---|
| Brand | Maxim | Maxim | Maxim | Maxim | Maxim |
| Package | SiP (thermally enhanced) | SiP (thermally enhanced) - same family | SiP (thermally enhanced) - same family | SiP (thermally enhanced) - same family | SiP (thermally enhanced) - same family |
| Input Voltage Range | 2.4V to 5.5V | 2.4V to 5.5V | 2.4V to 5.5V | 2.4V to 5.5V | 2.4V to 5.5V |
| Output Voltage Range | 0.75V to 3.6V | 0.75V to 3.6V | 0.75V to 3.6V | 0.75V to 5.5V | 0.75V to 3.6V |
| Maximum Output Current | 4 A | 5 A (+25%) | 3.5 A (-12.5%) | 6 A (+50%) | 5 A (+25%) |
| Inductor | Integrated (shielded) | Integrated (shielded) | Integrated (shielded) | Integrated (shielded) | Integrated (shielded) |
| Compensation | Internal | Internal | Internal | Internal | Internal |
| Topology | Buck (Step-Down) | Buck (Step-Down) | Buck (Step-Down) | Buck (Step-Down) | Buck (Step-Down) |
主要差異化特點
- Highest 4A rating in the 2.4-5.5V SiP family (對比MAXM17504ALI+)
- Lower output voltage cap than MAXM17516 (對比MAXM17516ALI+)
- Fully integrated SiP versus discrete buck (對比TPS54360 (discrete buck controller))
設計說明
Estimated: place input and output ceramic capacitors as close as possible to the IN and OUT pins of the MAXM17514ALI+ SiP to minimize parasitic inductance. Use X5R or X7R MLCCs with low ESR. The SiP integrates the inductor, but external input/output capacitors must still be sized per the Maxim datasheet reference design to maintain stable operation and limit output ripple at 4A loads.
At 4A load stepping 5V to 3.3V, power dissipation is approximately 6.8W worst-case (10% efficiency derating from ideal). The thermally enhanced SiP relies on PCB copper spreading for heat removal; design at least 1 square inch of 2oz copper on the package footprint. Without this, junction temperature can exceed 125C under sustained 4A loads.
Do not operate the MAXM17514ALI+ above 5.5V input - the integrated MOSFETs and inductor are rated only for 5.5V. Output voltages above 3.6V are not supported by this specific module; for higher output use the MAXM17516 family. Also ensure the feedback resistor divider uses 1% tolerance resistors to maintain output voltage accuracy at low Vout (e.g., 0.75V).
合規資訊
RoHS compliant per Maxim/Analog Devices product page. Not AEC-Q100 qualified (industrial/consumer grade); for automotive designs, contact Maxim about AEC-Q100 variants. Lead-free (Pb-free) per the part suffix.
