LTC3882-1#PBF - Dual 8-Phase Digital Power Controller | Analog Devices
料号： LTC3882-1#PBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
LTC3882-1#PBF 概述
A digital power controller is a specialized power management IC that combines analog switching regulator control with digital monitoring and control via a serial bus such as PMBus or I2C. It sits within the hierarchy of power management ICs, specifically under DC-DC converters and switching controllers. The LTC3882-1 integrates digital power system management, allowing real-time telemetry of voltage, current, and temperature, as well as configuration of output voltages, sequencing, and fault limits through the PMBus interface.
Key features include dual output channels, each capable of driving up to 8 phases for high-current applications, a wide input voltage range, and a PMBus-compliant interface for digital control and monitoring. The device supports constant frequency operation with leading-edge modulation, ensuring stable and efficient power conversion. It also includes programmable loop compensation, fault protection, and telemetry for comprehensive power management.
Technically, the LTC3882-1 employs a voltage mode control architecture with leading-edge modulation, which provides excellent transient response and simplifies loop compensation. The digital interface allows precise output voltage setting, margining, and sequencing, making it ideal for complex systems requiring dynamic voltage scaling. The device operates over a junction temperature range of -40°C to 125°C, with the -1E version guaranteed from 0°C to 85°C.
Typical applications include high-performance computing, networking equipment, telecommunications infrastructure, and industrial systems where multiple high-current rails need precise digital control. The LTC3882-1 is particularly suited for FPGA, ASIC, and processor power supplies that demand high efficiency and accurate voltage regulation.
When designing with the LTC3882-1, ensure proper decoupling and layout for the high-frequency switching signals. The PMBus interface requires careful attention to I2C addressing and bus timing. Additionally, the power stage components (MOSFETs, inductors, capacitors) must be selected to meet the transient and efficiency requirements of the application.
直接替换替代料： LTC3882-1#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： LTC3882-1#PBF （相同外形与封装尺寸） ——差异在于 Package, Output Voltage Range, Control Architecture, Input Voltage Range, Output Type.
快速对比工具——选择替代料号进行并排对比：
LTC3882EUJ-1#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC3882-2
✅ 直接替换✓ 有现货
$11.25 / 个
查看数据手册 →LTC3882IUJ#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC3882EUJ#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTC3882-1#PBF 最大额定值与电气特性
| 输出类型 | Dual, Step-Down |
| 输出数量 | 2 |
| Maximum Phases per Output | 8 |
| Control Architecture | Voltage Mode, Leading-Edge Modulation |
| Serial Interface | PMBus (I2C) |
| 封装 | 40-QFN (6x6) |
| 工作结温 | -40°C to 125°C |
| Guaranteed Temperature Range (E Grade) | 0°C to 85°C |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| PMBus Compliance | Yes |
| Digital Power System Management | Yes |
LTC3882-1#PBF 引脚配置
| 引脚 1 | VIN — Input supply voltage |
| 引脚 2 | VOUT1 — Output voltage sense for channel 1 |
| 引脚 3 | VOUT2 — Output voltage sense for channel 2 |
| 引脚 4 | GND — Ground |
| 引脚 5 | PWM1 — PWM output for channel 1 |
| 引脚 6 | PWM2 — PWM output for channel 2 |
| 引脚 7 | SDA — PMBus data line |
| 引脚 8 | SCL — PMBus clock line |
| 引脚 9 | ALERT — Alert output |
| 引脚 10 | RUN — Enable/run control |
典型应用
LTC3882-1#PBF 适用于 6 应用s: High-Performance Computing, Networking Equipment, Telecommunications Infrastructure, Industrial Automation, Data Center Power, FPGA and ASIC Power Supplies.
High-Performance Computing
The LTC3882-1#PBF is ideal for powering CPUs, GPUs, and FPGAs in servers and data centers. Its dual outputs and up to 8 phases per output deliver high current with precise voltage regulation. The PMBus interface enables dynamic voltage scaling and telemetry, essential for energy-efficient computing. Its voltage mode control ensures stable operation under fast load transients, meeting the stringent requirements of modern processors.
推荐
Networking Equipment
In routers, switches, and base stations, the LTC3882-1#PBF provides reliable power for ASICs and line cards. Its dual outputs can supply separate rails for core and I/O, while the PMBus interface allows remote monitoring and control. The leading-edge modulation architecture delivers excellent transient response, crucial for handling bursty network traffic. The 40-QFN package is compact, saving board space in dense networking designs.
推荐
Telecommunications Infrastructure
The LTC3882-1#PBF is well-suited for telecom power supplies that require high efficiency and precise regulation. Its PMBus interface enables configuration of output voltages and fault limits, simplifying system integration. The device supports PolyPhase operation, allowing multiple controllers to drive a single high-current rail. This makes it ideal for powering base station transceivers and line cards where reliability and thermal performance are critical.
推荐
Industrial Automation
In industrial control systems, the LTC3882-1#PBF provides robust power management for PLCs, motor drives, and robotics. Its wide operating temperature range (-40°C to 125°C) ensures reliable operation in harsh environments. The digital interface allows real-time monitoring of voltage, current, and temperature, enabling predictive maintenance. The voltage mode control architecture ensures stable operation under varying load conditions, making it suitable for demanding industrial applications.
推荐
Data Center Power
The LTC3882-1#PBF is designed for data center power distribution, providing high-current, multi-phase regulation for servers and storage systems. Its PMBus interface enables efficient power management, including voltage margining and sequencing, which is critical for optimizing energy consumption. The device's leading-edge modulation provides fast transient response, ensuring stable operation during sudden load changes. Its compact 40-QFN package is ideal for space-constrained server boards.
推荐
FPGA and ASIC Power Supplies
The LTC3882-1#PBF is an excellent choice for powering FPGAs and ASICs that require multiple low-voltage, high-current rails. Its dual outputs can supply core and I/O voltages, while the PMBus interface allows precise voltage setting and sequencing. The device supports up to 8 phases per output, enabling high current delivery with low ripple. Its voltage mode control ensures stable operation, making it ideal for high-performance digital logic.
推荐
推荐产品汇总
工程参考数据： LTC3882-1#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 | LTC3882EUJ-1#PBF | LTC3882-2 | LTC3882IUJ#PBF |
|---|---|---|---|---|
| Package | 40-QFN (6x6) | 40-QFN (6x6) | 40-QFN (6x6) | 40-QFN (6x6) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Master/Slave | Master | Master | Slave | Master |
| Temperature Grade | Standard (0°C to 85°C guaranteed) | Standard | Standard | Industrial (-40°C to 125°C) |
| Lead-Free | Yes (#PBF) | Yes (#PBF) | Yes (#PBF) | Yes (#PBF) |
| PMBus Interface | Yes | Yes | Yes | Yes |
| Number of Outputs | 2 | 2 | 2 | 2 |
| Max Phases per Output | 8 | 8 | 8 | 8 |
关键差异点
- Master controller capability （对比 LTC3882-2)
- Lead-free option （对比 LTC3882-1)
- Standard part number availability （对比 LTC3882EUJ-1#PBF)
设计说明
For the LTC3882-1#PBF, ensure a solid ground plane and adequate decoupling on the VIN pins. Place high-frequency ceramic capacitors close to the IC to minimize noise. The 40-QFN package has an exposed pad that should be soldered to the ground plane for thermal and electrical performance.
The LTC3882-1#PBF can dissipate significant power in high-current applications. Use thermal vias under the exposed pad to improve heat transfer to the PCB. Ensure adequate airflow or heatsinking if operating at high ambient temperatures. The junction temperature must not exceed 125°C.
When using the PMBus interface, ensure proper pull-up resistors on SDA and SCL lines. Incorrect I2C addressing can cause communication failures. Also, verify that the input voltage and output voltage settings are within the device's specifications to avoid damage.
合规信息
The #PBF suffix indicates lead-free (RoHS compliant). Other compliance data not specified in the provided sources.
