LM25066PSQ/NOPB - 2.9-17V PMBus Hot-Swap Controller | TI
料号： LM25066PSQ/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.3413 | $1.34 |
| 10 | $1.25 | $12.50 |
| 100 | $1.1 | $110.00 |
| 500 | $0.98 | $490.00 |
| 1,000 | $0.9 | $900.00 |
LM25066PSQ/NOPB 概述
A hot-swap controller, also called a power-path or hot-plug controller, safely manages the connection of a powered circuit card to a live backplane. It controls the inrush path, monitors operating conditions, reports faults, and can provide remote observability and configuration when paired with a PMBus-capable management controller. In the power-management hierarchy, this device belongs to the broader class of specialized power-management and protection ICs.
Key verified features include PMBus communication, operation from a 2.9 V to 17 V supply, and compatibility with base stations, networking line cards, and server applications. The LM25066 combines local hardware protection with digital telemetry, helping system designers implement safer field insertion and removal of circuit cards without redesigning the entire power architecture.
The device is identified as a 24-WQFN (4 mm x 5 mm) package by distributor data and as a WQFN (NHZ) package with 24 pins by Texas Instruments. Its PMBus interface is relevant to systems requiring measured power, voltage, current, temperature, and fault information at a management host. The exact electrical limits, threshold settings, timing values, and thermal characteristics must be taken from the manufacturer datasheet before final design release.
Typical applications include server and storage blades, networking line cards, and base-station equipment using a protected backplane power bus. The LM25066 can help isolate faults, coordinate power sequencing, and improve system observability where a field-replaceable module may be inserted into or removed from energized equipment.
A key design consideration is that the controller requires careful review of the complete hot-swap power path, including the external MOSFET, current-sense element, timing components, and PMBus host. Do not infer exact threshold values, fault responses, or pin functions from distributor summaries; use the LM25066 datasheet and TI application information for implementation details.
This page consolidates verified distributor specifications, practical application guidance, and same-package replacement information to support engineering selection, sourcing, and cross-reference decisions.
直接替换替代料： LM25066PSQ/NOPB ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
LM25066APSQ/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
LM25066PSQE/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
LM25066PSQX/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
LM25066PSQ/NOPB 最大额定值与电气特性
| Product Type | Hot-swap controller with PMBus |
| Supply Voltage Range | 2.9 V to 17 V |
| 电源电流 | 5.8 mA |
| 接口 | PMBus-compliant SMBus/I2C |
| 封装 | 24-pin WQFN (NHZ), 4 mm x 5 mm |
| Exposed Thermal Pad | Yes, package identified as WQFN-24-EP (4x5) by distributor data |
| Application Category | Base stations, networking line cards, servers |
| Protection Category | System power management and protection IC |
| Input Voltage | 2.9 V to 17 V |
| Output Telemetry | Power, voltage, current, temperature, and fault data |
| Communication Standard | PMBus |
| Bus Type | SMBus/I2C |
| 安装类型 | Surface mount |
| 工作温度 | Industrial temperature range indicated as -40 °C to +125 °C in TI support discussion |
| RoHS 状态 | ROHS listed by distributor |
LM25066PSQ/NOPB 24-pin wqfn (nhz), 4 mm x 5 mm 引脚配置指南
LM25066PSQ/NOPB（24-pin wqfn (nhz), 4 mm x 5 mm 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： LM25066PSQ/NOPB.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM25066PSQ/NOPB 适用于 6 应用s: Server Blade Hot-Plug Control, Networking Line-Card Protection, Storage Blade Power Management, Base-Station Equipment Power Bus, Managed Backplane Power System, Industrial Power-Path Control Module.
Server Blade Hot-Plug Control
The LM25066PSQ/NOPB fits server blade power systems where a card is inserted into or removed from a live backplane. Its verified 2.9 V to 17 V operating range and hot-swap architecture help the system manage power-path transitions instead of relying on a simple fixed rail. The PMBus-compliant SMBus/I2C interface adds remote visibility into power, voltage, current, temperature, and fault conditions. Design the external power path around the controller’s official datasheet limits, especially for MOSFET selection, current sensing, timing, and fault recovery.
推荐
Networking Line-Card Protection
LM25066PSQ/NOPB is suitable for networking line cards that receive power from a shared backplane and require field-replaceable protection. The controller’s hot-swap function helps control card insertion behavior while its PMBus interface supplies operating data to a system manager. The 24-pin WQFN (NHZ) package supports compact designs, but exposed-pad thermal management and the external MOSFET must be reviewed carefully. Use the manufacturer’s application information to validate current limits and startup behavior for the specific line-card power budget.
推荐
Storage Blade Power Management
The LM25066PSQ/NOPB can support storage blades that need controlled connection to a multi-rail backplane bus. Its PMBus telemetry allows a management host to monitor power-related operating conditions and identify faults in a replaceable module. The verified 2.9 V to 17 V supply range must be checked against the storage blade’s auxiliary rails and startup sequence. Engineers should also account for the thermal performance of the WQFN exposed pad and the dissipation in external power-path components.
推荐
Base-Station Equipment Power Bus
LM25066PSQ/NOPB is identified by Texas Instruments for base-station equipment, where line cards and radio modules may be connected to common power buses. The controller provides a controlled hot-swap function and a digital management path for monitoring system conditions. Its 5.8 mA verified supply current can be relevant to low-power auxiliary rails, although the complete design must include external pass-device losses. Confirm environmental requirements and fault thresholds against the final TI datasheet before deployment.
推荐
Managed Backplane Power System
The LM25066PSQ/NOPB is appropriate for managed backplane architectures where multiple removable modules need coordinated insertion, protection, and observability. PMBus reporting of power, voltage, current, temperature, and fault information helps the system host track operating health. The controller does not replace the external MOSFET or current-sense network; those components determine the practical current-handling capability of the power path. Follow the TI layout guidance and validate startup behavior across worst-case cable, connector, and load conditions.
推荐
Industrial Power-Path Control Module
LM25066PSQ/NOPB can serve as the central protection controller in an industrial module that accepts external power through a connector and backplane-style distribution network. Its PMBus interface allows supervisory electronics to record operating conditions and react to faults, while the hot-swap function supports safer service procedures. The 24-pin WQFN package requires careful land-pattern and exposed-pad layout. Because the supplied data does not include complete threshold, timing, or current-limit tables, engineers must use the official TI documentation for production values.
推荐
推荐产品汇总
工程参考数据： LM25066PSQ/NOPB ——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 | LM25066APSQ/NOPB | LM25066PSQE/NOPB | LM25066PSQX/NOPB |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Type | Hot-swap controller with PMBus | LM25066-family hot-swap controller | LM25066-family hot-swap controller | LM25066-family hot-swap controller |
| Package | 24-pin WQFN (NHZ), 4 mm x 5 mm | 24-pin WQFN (NHZ) listed as related family part | 24-pin WQFN (NHZ) listed as related family part | 24-pin WQFN (NHZ) listed as related family part |
关键差异点
- Integrated hot-swap control with PMBus monitoring （对比 A conventional non-PMBus hot-swap controller)
- 2.9 V to 17 V controller operating range （对比 A fixed 5 V-only auxiliary controller)
- Compact 24-pin WQFN implementation （对比 A larger-package hot-swap controller)
设计说明
Design the external hot-swap MOSFET and current-sense network around the controller's official electrical limits. The 2.9 V to 17 V operating range applies to the controller supply, while the protected power path may have separate voltage and current requirements. Verify startup current, inrush control, SOA, and fault-current behavior with the complete board network rather than relying on the controller package rating alone.
The LM25066PSQ/NOPB uses a WQFN package with an exposed pad. Follow the TI land-pattern and thermal guidance, provide uninterrupted copper beneath the pad, and account for heat generated by the controller and external power-path devices. Estimated: the controller supply dissipation at 5.8 mA and 17 V is approximately 0.0986 W, calculated as 5.8 mA multiplied by 17 V; this excludes external component losses.
Place the controller, current-sense elements, gate-drive components, and protection components close to the power connector and hot-swap MOSFET. Keep high-current and high-di/dt paths compact, and route sense connections away from switching nodes where practical. The PMBus traces should be controlled-length and appropriately terminated according to the system design, while the exposed pad must retain the datasheet-specified copper and via arrangement.
PMBus communication can be affected by noisy power-path transitions and connector transients. Review the SMBus/I2C pull-up arrangement, grounding, filtering, and isolation strategy against the system requirements. Do not infer rise time, capacitance, address behavior, or fault timing from the distributor snippets; use the official LM25066 documentation and validate with the target system-management host.
合规信息
JLCPCB lists the part as ROHS. The supplied verified data does not establish REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Industrial temperature information comes from a Texas Instruments support discussion and should be confirmed in the official datasheet.
