LM25056PSQ/NOPB - Single-Phase PMBus Power Meter | TI
料号： LM25056PSQ/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.1626 | $2.16 |
| 10 | $2.1626 | $21.63 |
| 100 | $2.1626 | $216.26 |
| 500 | $2.1626 | $1,081.30 |
| 1,000 | $2.1626 | $2,162.60 |
LM25056PSQ/NOPB 概述
A power measurement IC is a specialized power-management and system-monitoring component that converts real-time electrical operating conditions into digital measurements for a host controller. In the broader hierarchy, it belongs to power-management ICs, interface ICs, energy-metering ICs, and system-power monitors. This hierarchy makes it useful where a backplane power bus must be observed continuously rather than inferred only from system software.
The verified device data identifies a 3 V to 17 V input range and 0.5% accuracy. The PMBus-compliant interface supports digital communication with a system-management host, while continuous reporting of power, voltage, current, and temperature enables telemetry, fault monitoring, load analysis, and thermal management. The 24-WQFN package supports compact placement in single-phase power-system designs.
Technically, the device combines high-performance analog measurement paths with digital signal processing and an SMBus/I2C interface. This combination allows electrical operating data to be transferred to a host while the measurement circuitry handles the physical power bus. The published temperature range is -40°C to +125°C, supporting industrial and system-level applications where the power rail may experience a broad ambient range.
Typical applications include computing and storage blades connected to backplane power buses, server and blade systems, telecom and networking equipment, single-phase power supplies, and embedded system-management controllers. In these systems, the IC provides the measurement layer used to monitor power consumption and operating conditions remotely.
When designing around the LM25056PSQ/NOPB, design the PCB for the 24-WQFN footprint, provide the required input and current-measurement connections, and validate the PMBus address and communication settings in the host controller. Confirm the complete pin mapping and thermal layout against the manufacturer datasheet before releasing a production board. The package is surface mount and uses a WQFN family form factor.
直接替换替代料： LM25056PSQ/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：
LM25056APSQ/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
LM25056PSQ/NOPB 最大额定值与电气特性
| Product Type | Single-phase system power measurement IC |
| 输入电压范围 | 3 V to 17 V |
| Metering Accuracy | 0.5% |
| Communication Interface | PMBus-compliant SMBus/I2C |
| Measured Quantities | Power, voltage, current, and temperature |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 24-WQFN (4 x 5 mm) |
| 安装类型 | Surface mount |
| Manufacturer | Texas Instruments |
| 功能 | Power and operating-condition measurement for system management |
| Target Application | Computing and storage blades connected to backplane power buses |
| RoHS 状态 | RoHS3 |
| Availability Signal | Active |
| Carrier Option | Custom reel may be available |
LM25056PSQ/NOPB 24-wqfn (4 x 5 mm) 引脚配置指南
LM25056PSQ/NOPB（24-wqfn (4 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： LM25056PSQ/NOPB.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM25056PSQ/NOPB 适用于 6 应用s: Computing Blade Power Telemetry, Storage System Power Monitoring, Backplane Power-Bus Monitoring, Single-Phase Power-Supply Telemetry, Industrial System-Management Controller Interface, Network and Telecom Power Systems.
Computing Blade Power Telemetry
The LM25056PSQ/NOPB fits computing blades because it continuously reports power, voltage, current, and temperature to a system-management host through its PMBus-compliant SMBus/I2C interface. Its 3 V to 17 V operating range and 0.5% specified accuracy support real-time monitoring of a single-phase backplane power bus. The device is placed in the power-system signal path rather than as a standalone voltage regulator, allowing the host to track operating conditions without repeatedly probing external rails. The exact current-sense components, thresholds, and PCB layout must follow the TI datasheet.
推荐
Storage System Power Monitoring
Storage systems benefit from continuous visibility into power, voltage, current, and temperature, particularly when multiple drives or backplane modules share a power bus. LM25056PSQ/NOPB provides the measurement layer and digital reporting interface for a single-phase system. The 0.5% accuracy specification makes it suitable for validated power-accounting designs, while the 3 V to 17 V range covers the stated operating class. Designers should verify the exact current-sense range and power calculation behavior against the current Texas Instruments documentation before layout approval.
推荐
Backplane Power-Bus Monitoring
The LM25056PSQ/NOPB is intended for electrical systems connected to a backplane power bus, where operating data must be available to a management host. Its PMBus-compliant SMBus/I2C interface provides a digital path for real-time power, voltage, current, and temperature reporting. The single-phase architecture supports cost-conscious system monitoring without replacing the measurement function with software estimates. Placement near the power-path sensing network can reduce trace-related measurement error, but the final signal routing and grounding strategy must follow the manufacturer layout guidance.
推荐
Single-Phase Power-Supply Telemetry
LM25056PSQ/NOPB can be used in a single-phase power-supply module when the controller needs measured operating information rather than only set-point data. Reporting power, voltage, current, and temperature enables host-side load tracking, fault detection, and thermal management. The device's stated 3 V to 17 V operating range and 0.5% accuracy provide the core operating limits for system qualification. External current-sensing and filtering components remain application-specific, so engineers should not infer values not shown in the manufacturer datasheet.
推荐
Industrial System-Management Controller Interface
The LM25056PSQ/NOPB is appropriate for industrial equipment that needs remote measurement of power-system operating conditions. The PMBus-compliant SMBus/I2C interface lets a controller acquire power, voltage, current, and temperature data for logging, alarms, or maintenance decisions. The published -40°C to +125°C operating range supports a broad environmental envelope, although the complete electrical and timing limits must still be checked against the TI datasheet. Firmware must also be written for the device's actual command and address configuration.
推荐
Network and Telecom Power Systems
Network and telecom equipment often uses centralized management to monitor power subsystems distributed across racks or line cards. LM25056PSQ/NOPB supplies the measurement function for a single-phase rail and exposes operating information through PMBus-compliant SMBus/I2C communication. Its 0.5% specified accuracy and 3 V to 17 V operating range support systems requiring repeatable power telemetry. For production implementation, verify the current-sense topology, bus capacitance, pull-up requirements, and fault thresholds in the manufacturer documentation.
推荐
推荐产品汇总
工程参考数据： LM25056PSQ/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 | LM25056APSQ/NOPB |
|---|---|---|
| Package | 24-WQFN (4 x 5 mm) | 24-WQFN package class; exact package verification required |
| Brand | Texas Instruments | Texas Instruments |
| Product Type | Single-phase system power measurement IC | System power measurement IC |
| Communication Interface | PMBus-compliant SMBus/I2C | PMBus-compliant SMBus/I2C |
| Measured Quantities | Power, voltage, current, and temperature | Power, voltage, current, and temperature |
关键差异点
- Dedicated single-phase power measurement role （对比 LM25056APSQ/NOPB)
- Digital operating-condition telemetry （对比 LM25056APSQ/NOPB)
- Compact system-monitoring integration （对比 LM25056APSQ/NOPB)
设计说明
Route the power-measurement sensing connections as short and controlled as practical, following the manufacturer layout recommendation. Keep the analog measurement section physically separated from high-current switching paths and noisy digital return currents. Because the supplied snippets do not provide the complete pinout or reference layout, the production design must be checked against the current TI datasheet before copper, placement, and test-point decisions are released.
The PMBus-compliant SMBus/I2C interface must be laid out as a controlled communication network. Use the required pull-up arrangement, keep the bus routing short where practical, and ensure the host controller supports the device's configured address and command set. The supplied data confirms the interface type but does not specify voltage, timing, address options, or capacitance limits; obtain those values from the manufacturer datasheet before final schematic release.
The LM25056PSQ/NOPB is intended to measure a power system, not to replace the power-conversion stage. Validate the sensing network, input limits, grounding, and measurement range against the 3 V to 17 V operating class and the actual bus load. Do not infer current-range or dissipation values from the 0.5% accuracy statement alone; use the datasheet's absolute maximum ratings and recommended operating circuit.
Although the verified data identifies a 24-WQFN 4 x 5 mm package and a -40°C to +125°C temperature range, it does not provide a thermal-resistance value or power dissipation curve. Confirm the exposed-pad connection, copper area, airflow assumptions, and maximum junction temperature from the manufacturer documentation. Production thermal validation should include the highest expected ambient temperature and the worst-case measurement and communication activity.
合规信息
The supplied DiGi Electronics result states RoHS3. REACH, lead-free status, halogen-free status, AEC-Q100 qualification, and conflict-minerals status are not provided in the verified data and therefore remain unknown.
