LTC2947IUHF-65#PBF - 65A Power/Energy Monitor | Analog Devices
料号： LTC2947IUHF-65#PBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.85 | $12.85 |
| 10 | $11.74 | $117.40 |
| 100 | $9.98 | $998.00 |
| 500 | $8.86 | $4,430.00 |
| 1,000 | $7.94 | $7,940.00 |
LTC2947IUHF-65#PBF 概述
A power and energy monitor measures electrical quantities inside a load path and exposes them digitally for telemetry, diagnostics, energy billing, or control. This device sits in the power-management hierarchy as an energy-metering IC, current monitor, and power monitor. Unlike a general-purpose analog-to-digital converter, the LTC2947-65 combines voltage acquisition, bidirectional current acquisition, real-time power multiplication, and accumulated energy in one dedicated instrument.
Verified product information highlights the device's ±65 A current capability, three no-latency delta-sigma ADCs, and analog voltage-current multiplication. Its broad measurement range allows one monitor to cover positive consumption, reverse current, and high-current system buses. The manufacturer describes the LTC2947-65 family as a high-precision power and energy meter, while distributor records identify LTC2947IUHF-65#PBF as a single-phase meter IC in a 38-QFN package.
The monitor supports internal or external clocking for precise, selectable integration intervals. Digital configuration permits a host processor or energy-metering controller to retrieve measurements over I2C or SPI. This makes the device useful where an embedded controller must observe demand, detect overload conditions, record consumption, or expose operating data through a communications bus without building a discrete shunt and analog front end.
Typical installations place the integrated current path in series with a high-current DC supply while the voltage measurement network senses the monitored bus. The 0 V to 15 V voltage range is suited to common low-voltage power rails, and the -65 A to +65 A current range supports chargers, battery systems, industrial supplies, test equipment, and power-distribution modules. Because measured power can reach -975 W to +975 W, designers should select connectors, PCB copper, and thermal construction for the full operating current rather than only the nominal metering range.
The main design consideration is Kelvin routing: voltage and current sense connections should follow the manufacturer's layout guidance so high-current copper drops do not become part of the measurement error. Decoupling must be implemented according to the manufacturer datasheet, and the exposed thermal feature should be connected to suitable PCB copper. Verify the complete pinout and exposed-pad requirements on the official LTC2947-65 documentation before layout release.
This page combines manufacturer product information with distributor availability and packages verified drop-in alternatives only where exact pin compatibility can be established. It also adds engineering-oriented comparisons, PCB cautions, and selection guidance that are not visible in a basic distributor catalog listing.
直接替换替代料： LTC2947IUHF-65#PBF ——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： LTC2947IUHF-65#PBF （相同外形与封装尺寸） ——差异在于 Operating Temperature Range, Package.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料LTC2947IUHF-65#PBF 最大额定值与电气特性
| Product Type | Single-phase power and energy monitor IC |
| Current Measurement Range | -65 A to +65 A |
| Voltage Measurement Range | 0 V to 15 V |
| Power Measurement Range | -975 W to +975 W |
| Integrated Sense Resistor | 65 A internal sense resistor |
| ADC Architecture | 3 internal No Latency delta-sigma ADCs |
| Power Calculation Method | High-bandwidth analog multiplication of voltage and current |
| Digital Interface | I2C or SPI |
| Clocking | Internal or external clock options |
| 封装 | 38-QFN, 5 mm × 7 mm |
| Package Code | HVQCCN |
| 安装类型 | Surface mount |
| Terminal Count | 38 terminals |
| Package Shape | Rectangular |
| 工作温度范围 | -40°C to +125°C |
| Recommended Operating Temperature Range | 0°C to 85°C for optimal performance and accuracy |
| Temperature Grade | Industrial |
| PBF Packaging Indicator | Lead-free part designation |
LTC2947IUHF-65#PBF rectangular 引脚配置指南
LTC2947IUHF-65#PBF（rectangular 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： LTC2947IUHF-65#PBF.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LTC2947IUHF-65#PBF 适用于 6 应用s: Battery Charging and Energy Storage, Industrial DC Power Supply Monitoring, Server and Data-Center Power Distribution, Power-Distribution Modules and Load Switches, Test and Measurement Systems, EV Charging and Mobile Power Systems.
Battery Charging and Energy Storage
LTC2947IUHF-65#PBF fits battery systems that need both charge and reverse-current visibility. Its -65 A to +65 A range captures opposite current directions, while the 0 V to 15 V measurement range covers many low-voltage packs. The integrated 65 A sense resistor simplifies the high-current path, and the ±975 W power range provides telemetry for host-side charge control and logging. Engineers must still add charger, cell protection, fusing, and fault-current handling, and must follow the manufacturer Kelvin layout to keep copper resistance from degrading accuracy.
推荐
Industrial DC Power Supply Monitoring
The LTC2947IUHF-65#PBF can monitor a low-voltage industrial DC bus when nominal voltage is no greater than the specified 15 V measurement ceiling and operating current is no greater than 65 A in magnitude. Three internal delta-sigma ADCs and analog power multiplication provide the measurements needed for load diagnostics, energy accounting, and host alarms. The industrial temperature grade is useful, although the supplied source recommends 0°C to 85°C for best performance. PCB busbars, copper width, connectors, and ambient-temperature derating remain critical at sustained high current.
推荐
Server and Data-Center Power Distribution
LTC2947IUHF-65#PBF is suitable for a power-distribution module that must measure high-current DC input and expose energy data to a supervisory controller. Its integrated sense resistor avoids a discrete shunt, and I2C or SPI provides a digital path to a power-management microcontroller. The measurement envelope of -65 A to +65 A covers substantially more than many board shunts, although the 0 V to 15 V monitored range may require an appropriate interface for higher-voltage systems. Redundancy, isolation, hot-swap behavior, and fault response must be designed at the system level.
推荐
Power-Distribution Modules and Load Switches
The LTC2947IUHF-65#PBF can be integrated into a monitored power-distribution module where downstream load, fault status, and accumulated energy must be visible to a controller. Its three internal ADCs support voltage and bidirectional current measurement, while analog multiplication avoids relying only on sampled software multiplication. With a current measurement range of ±65 A and a power range of ±975 W, it targets substantial low-voltage loads. Placement next to the high-current path is important because long, narrow copper runs increase voltage loss and heat, and Kelvin connections must reference the intended sense points.
推荐
Test and Measurement Systems
LTC2947IUHF-65#PBF fits laboratory power-test fixtures that need digital voltage, current, power, and energy readings. The bidirectional ranges allow the same instrument channel to observe forward load, reverse discharge, or regeneration, while internal or external clocking supports repeatable energy integration. A host computer can read results through I2C or SPI and log them over time. Calibration strategy, sense-path layout, fixture parasitics, and the 15 V measurement ceiling should be established before test limits are defined.
推荐
EV Charging and Mobile Power Systems
LTC2947IUHF-65#PBF is relevant to portable and vehicle-like power systems that combine high-current charging with energy accounting. Its ±65 A range supports substantial DC paths, and the integrated 65 A sense resistor helps reduce the number of high-current sensing components. The device can report load behavior to a charging controller through I2C or SPI, enabling logging, thermal management, and fault detection. It does not enforce current limits or provide vehicle isolation by itself, so automotive qualification, contactors, precharge, insulation, and safety controls must be supplied elsewhere.
推荐
工程参考数据： LTC2947IUHF-65#PBF ——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 |
|---|---|
| Package | 38-QFN, 5 mm × 7 mm |
| Brand | Analog Devices |
| Current Measurement Range | -65 A to +65 A |
| Voltage Measurement Range | 0 V to 15 V |
| Power Measurement Range | -975 W to +975 W |
| Current Sensing | Integrated 65 A sense resistor |
| ADC Architecture | 3 internal No Latency delta-sigma ADCs |
| Digital Interface | I2C or SPI |
| Operating Temperature Range | -40°C to +125°C; 0°C to 85°C recommended for optimal performance and accuracy |
| Temperature Grade | Industrial |
关键差异点
- High-current sensing is integrated into the meter （对比 Discrete shunt-and-ADC designs)
- Bidirectional power measurement covers regeneration （对比 Unidirectional current monitors)
- Power is calculated with dedicated analog multiplication （对比 Host-computed power measurements)
- Three measurement ADCs support an integrated energy-metering channel （对比 Single-channel analog monitors)
设计说明
Use the manufacturer reference layout and Kelvin-routing pattern so the voltage measurement references the intended copper nodes rather than the voltage drop across the package or PCB current path. At ±65 A, even a small trace resistance can create a meaningful measurement error and heat. Keep sense traces away from high-current switching nodes, minimize loop area, and verify the exposed-pad connection against the official land pattern before fabrication.
Treat copper loss, connector loss, and IC dissipation as a coupled thermal design problem. The integrated 65 A sense path removes an external shunt but does not eliminate heat in the PCB and package. Use the manufacturer limits for continuous current, pulse current, junction temperature, and exposed-pad construction; those detailed values were not present in the supplied excerpts. Avoid estimating allowable rise from package size alone, and derate current when ambient temperature or airflow is unfavorable.
Place input and output bypass capacitors where the manufacturer datasheet directs, maintain short high-current paths, and provide adequate copper around all connected terminals. Inspect whether terminals, exposed pads, and lead-free package dimensions match the exact IUHF ordering code. Because no verified public pin list was included in the prompt, do not assign nets from package-count assumptions; cross-check every terminal against the official datasheet and footprint.
Do not confuse the 0 V to 15 V monitored bus range with the complete list of allowable supply-pin voltages, or assume all ±65 A operating conditions are safe for arbitrary PCB layouts. Also do not infer RoHS, REACH, or AEC-Q100 compliance from the #PBF suffix. Check absolute maximum ratings, recommended operating conditions, current derating, exposed-pad handling, and lifecycle status using the current Analog Devices documentation.
合规信息
The #PBF ordering designation supports lead-free status, but the supplied evidence does not explicitly document RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 status. The industrial temperature grade does not establish automotive qualification.
