LTC3882-1#PBF - Dual 8-Phase Digital Power Controller | Analog Devices
N.º de pieza: LTC3882-1#PBF ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 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 Descripción general
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.
Alternativas directas para LTC3882-1#PBF — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con LTC3882-1#PBF (mismo factor de forma y huella) — difiere en Package, Output Voltage Range, Control Architecture, Input Voltage Range, Output Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LTC3882EUJ-1#PBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC3882-2
✅ Sustitución directa✓ En stock
$11.25 / unidad
Ver hoja de datos →LTC3882IUJ#PBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC3882EUJ#PBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC3882-1
✅ Sustitución directa✓ En stock
$7.9 / unidad
Ver hoja de datos →LTC3882-1#PBF Valores máximos y características eléctricas
| Tipo de salida | Dual, Step-Down |
| Número de salidas | 2 |
| Maximum Phases per Output | 8 |
| Control Architecture | Voltage Mode, Leading-Edge Modulation |
| Serial Interface | PMBus (I2C) |
| Encapsulado | 40-QFN (6x6) |
| Temperatura de unión de funcionamiento | -40°C to 125°C |
| Guaranteed Temperature Range (E Grade) | 0°C to 85°C |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| PMBus Compliance | Yes |
| Digital Power System Management | Yes |
Configuración de pines de LTC3882-1#PBF
| Pin 1 | VIN — Input supply voltage |
| Pin 2 | VOUT1 — Output voltage sense for channel 1 |
| Pin 3 | VOUT2 — Output voltage sense for channel 2 |
| Pin 4 | GND — Ground |
| Pin 5 | PWM1 — PWM output for channel 1 |
| Pin 6 | PWM2 — PWM output for channel 2 |
| Pin 7 | SDA — PMBus data line |
| Pin 8 | SCL — PMBus clock line |
| Pin 9 | ALERT — Alert output |
| Pin 10 | RUN — Enable/run control |
Aplicaciones típicas
LTC3882-1#PBF es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LTC3882-1#PBF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Master controller capability (frente a LTC3882-2)
- Lead-free option (frente a LTC3882-1)
- Standard part number availability (frente a LTC3882EUJ-1#PBF)
Notas de diseño
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.
Información de cumplimiento
The #PBF suffix indicates lead-free (RoHS compliant). Other compliance data not specified in the provided sources.
