MAX14701EWC+ - 5.9V OVP Protector with Surge | Maxim Integrated
料号： MAX14701EWC+ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.34 | $134.00 |
| 500 | $1.12 | $560.00 |
| 1,000 | $0.95 | $950.00 |
| 3,000 | $0.82 | $2,460.00 |
MAX14701EWC+ 概述
An OVP (overvoltage protector) is a type of power management IC that sits between an upstream power source and a downstream load, disconnecting the path when the input voltage exceeds a programmed threshold. OVP ICs sit inside the broader protection IC family (OVP, OCP, OTP, reverse-polarity) and are critical for systems that must survive faulty adapters, hot-plug transients, and inductive load transients on their power inputs.
Key features include ±1% accurate overvoltage trip threshold, ultra-low on-resistance internal MOSFET, integrated back-to-back TVS for surge robustness, and minimal quiescent current. The MAX14701EWC+ is specifically designed for systems that need to survive non-compliant USB Type-C adapters and 5V rails where accidental application of high voltage could damage downstream components.
Typical applications include USB Type-C/PD port protection, smartphones and tablets, IoT devices powered from 5V adapters, and any system that must survive up to 28V on a 5V rail. The 12-pin WLP package allows compact placement near the input connector.
When designing with this part, place the device as close to the input connector as possible to maximize surge clamping effectiveness. The integrated TVS reduces external component count compared to discrete FET + TVS solutions.
直接替换替代料： MAX14701EWC+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MAX14701EWC+ （相同外形与封装尺寸） ——差异在于 Function, OVP Threshold Accuracy, Operating Temperature, Package, Surge Protection.
快速对比工具——选择替代料号进行并排对比：
MAX14701EWC+T
✅ 直接替换✓ 有现货
$1.12 / 个
查看数据手册 →MAX14701EWB+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX14702EWC+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX14701EWC+ 规格参数
| 功能 | Overvoltage Protector (OVP) with Surge Protection |
| OVP Trip Threshold (Typ) | 5.915 V |
| OVP Threshold Accuracy | ±1% (typ) |
| Surge Protection | Integrated TVS, ±100 V (typ) |
| 输出类型 | Switch (FET pass-through) |
| 工作温度 | -40C to +85C |
| 封装 | 12-pin WLP (EWC) 1.26 x 1.5 mm |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
MAX14701EWC+ 引脚配置
| 引脚 1 | IN — Input voltage from source/adapter |
| 引脚 2 | IN — Input voltage (parallel bump for current) |
| 引脚 3 | GND — Ground reference |
| 引脚 4 | GND — Ground (parallel bump) |
| 引脚 5 | OUT — Protected output to load |
| 引脚 6 | OUT — Output (parallel bump for current) |
| 引脚 7 | NC — Not connected (per datasheet) |
| 引脚 8 | NC — Not connected (per datasheet) |
| 引脚 9 | NC — Not connected (per datasheet) |
| 引脚 10 | NC — Not connected (per datasheet) |
| 引脚 11 | NC — Not connected (per datasheet) |
| 引脚 12 | NC — Not connected (per datasheet) |
典型应用
MAX14701EWC+ 适用于 7 应用s: USB Type-C / Power Delivery 5V Port Protection, Smartphone and Tablet Charging Port Protection, IoT and Smart-Home Device 5V Input Protection, Industrial 5V Sensor and Module Power Rails, Portable and Wearable Device Charging Inputs, Point-of-Sale and Accessory Power Input Protection, 5V Adapter Hot-Plug and Cable Protection.
USB Type-C / Power Delivery 5V Port Protection
The MAX14701EWC+ is purpose-built for protecting USB Type-C and USB-PD ports from faulty adapters that deliver excessive voltage on the 5V VBUS rail. The 5.915V fixed threshold sits just above the USB-C 5V nominal bus voltage (5.0V ±5%), allowing normal CC/PD negotiation while disconnecting the load when a non-compliant adapter applies >6V. Its integrated ±100V surge TVS also handles hot-plug transients and inductive kickback from downstream DC-DC converters, eliminating external TVS components and shrinking the protection footprint. Placed near the input connector with the input bypass cap, the part forms a complete front-end protection IC for USB-C sinks.
推荐
Smartphone and Tablet Charging Port Protection
Smartphone and tablet charging ports need protection against non-compliant wall adapters that can apply voltages well above the 5V charging rail. The MAX14701EWC+ integrates OVP + surge TVS in a 1.26 x 1.5 mm WLP footprint that fits inside the micro-USB or USB-C connector footprint. The 5.915V ±1% threshold prevents charging-IC damage from faulty adapters, while the integrated TVS handles ESD and surge events per IEC 61000-4-2/4-5. Quiescent current during normal 5V charging is minimal, so the part does not measurably impact battery life - critical for power meters in mobile designs.
推荐
IoT and Smart-Home Device 5V Input Protection
IoT and smart-home devices powered from 5V wall adapters benefit from the MAX14701EWC+'s integrated protection at the input. Many low-cost adapters deliver over-voltage under load or during transients, which would otherwise damage downstream Wi-Fi/BLE SoCs and sensors. The part's 5.915V threshold blocks these events while the ±100V surge TVS handles lightning-induced transients on outdoor power lines. The WLP footprint allows placement inside small IoT enclosures where PCB area is constrained, and the low quiescent current preserves standby power budget.
推荐
Industrial 5V Sensor and Module Power Rails
Industrial 24V-bus systems often step down to 5V for sensor modules; if the 5V regulator fails, downstream 5V-rated components face over-voltage stress. The MAX14701EWC+ placed at the 5V rail protects sensitive analog and digital ICs from this failure mode. Its ±1% threshold accuracy prevents nuisance trips during normal 5V ±5% operation, while the integrated TVS handles 24V-bus transients and switching-regulator ringing. The WLP package enables placement inside sensor housings where space is at a premium, and -40C to +85C operation covers factory-floor environments.
推荐
Portable and Wearable Device Charging Inputs
Wearable devices (smartwatches, fitness bands, hearables) use small charging ports vulnerable to damaged cables and non-compliant chargers. The MAX14701EWC+ integrates OVP and surge protection in a tiny WLP package that fits inside wearable enclosures. The 5.915V threshold blocks over-voltage from faulty chargers, and the ±100V TVS handles ESD events that occur during cable insertion. Low quiescent current preserves battery life during standby, and the -40C to +85C rating covers outdoor and fitness use cases. Compared to discrete solutions, the integrated IC reduces BOM count and assembly cost.
推荐
Point-of-Sale and Accessory Power Input Protection
Point-of-sale terminals and accessory products often draw power from 5V sources that may be mis-wired or non-compliant. The MAX14701EWC+ protects payment terminals, barcode scanners, and accessory products from over-voltage damage, and its integrated TVS withstands the surge events common in retail and field environments. The 12-pin WLP footprint is small enough to fit inside connectors and inline cable assemblies. The 5.915V threshold aligns with USB-PD legacy 5V profiles, making the part suitable for retrofit protection on existing product lines.
推荐
5V Adapter Hot-Plug and Cable Protection
Hot-plugging a 5V adapter into a powered system can create voltage transients that exceed the downstream IC's absolute maximum. The MAX14701EWC+ handles hot-plug events at the input connector by disconnecting during transient over-voltage and reconnecting once the rail stabilizes. Its integrated surge TVS clamps inductive transients from downstream DC-DC converters during load steps. The WLP package enables placement right at the input pins where protection is most needed, and the low on-resistance minimizes voltage drop between the adapter and the downstream regulator.
推荐
推荐产品汇总
工程参考数据： MAX14701EWC+ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MAX14701EWC+T | MAX14701EWB+T | MAX14702EWC+T |
|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 12-pin WLP (EWC) | 12-pin WLP (EWC) - same | 12-pin WLP (EWB) - functionally same | 12-pin WLP (EWC) - same |
| OVP Trip Threshold | 5.915 V | 5.915 V (identical) | 5.95 V (+0.6%) | Varies by variant |
| Integrated Surge TVS | Yes (typ ±100 V) | Yes (identical) | Yes (same family) | Yes (same family) |
| Function | OVP + Surge Protector | OVP + Surge (identical) | OVP + Surge (same) | OVP + Surge (same family) |
| Operating Temperature | -40C to +85C | -40C to +85C (identical) | -40C to +85C (same) | -40C to +85C (same family) |
| Compliance (RoHS) | Compliant | Compliant (identical) | Compliant (same) | Compliant (same family) |
| Pin Count | 12 | 12 (identical) | 12 (same) | 12 (same family) |
关键差异点
- Integrated surge TVS in same package （对比 Discrete OVP + external TVS solutions)
- Fixed 5.915V ±1% threshold (no programming resistors) （对比 Adjustable-threshold OVP ICs)
- Ultra-compact 12-pin WLP (1.26 x 1.5 mm) （对比 Larger QFN/DFN OVP packages)
设计说明
Place the MAX14701EWC+ as close as physically possible to the input connector. The integrated TVS is most effective when the trace length between the connector and the protection IC is minimized - every additional 5mm of trace adds parasitic inductance that reduces surge-clamping effectiveness. Use wide, short traces on IN and OUT bumps, and place the input bypass capacitor directly adjacent to the IN bumps. The WLP package requires NSMD pads on the PCB per Maxim's application note.
Estimate: at 5V input, 5V output, and 1A continuous current, the MAX14701EWC+ dissipates approximately (V_in - V_out) x I_load = 0V x 1A = 0W in normal operation. During fault conditions (e.g. a 12V adapter short), the part disconnects the load and dissipates fault energy in the internal TVS - verify TVS power rating against your worst-case surge scenario. The WLP package has limited thermal mass; do not exceed the datasheet's absolute maximum ratings.
Do not exceed the absolute maximum input voltage rating specified in the datasheet. The 5.915V threshold does NOT mean the part can withstand 5.915V indefinitely - the integrated surge TVS handles transient events, but continuous DC over-voltage can damage the IC. Always design the downstream load to tolerate the brief latency between fault detection and FET disconnect. Verify that downstream bulk capacitance does not cause inrush currents that exceed the part's safe operating area during reconnect events.
合规信息
RoHS and lead-free compliance confirmed via Maxim Integrated product page and distributor listings. Halogen-free status not explicitly stated in retrieved data. Not applicable for AEC-Q100 - this part is not automotive-qualified.
