LTM4676EY#PBF - Dual 13A μModule Regulator | Analog Devices
MPN： LTM4676EY#PBF ✓ 啟用中LTM4676EY#PBF 概覽
A μModule (micromodule) is a complete power management solution integrated into a single package, combining the controller, power MOSFETs, inductors, and supporting components. This integration simplifies design, reduces board space, and improves reliability compared to discrete solutions. The LTM4676EY#PBF belongs to the family of digital power system management (DPSM) regulators, which enable remote configuration and telemetry monitoring via the PMBus interface, an open standard I2C-based digital communication protocol.
Key features include PMBus-compliant digital interface for programming output voltages, margining, and monitoring of current, voltage, and temperature. The device supports pin-strapping resistors to set output voltages, switching frequency, and channel phase angle assignments at startup. It offers high efficiency and high density, making it suitable for space-constrained applications. The LTM4676EY#PBF is available with RoHS-compliant terminal finish, and the 'EY' suffix indicates the extended temperature grade (automotive, -40°C to +125°C).
Technically, the LTM4676EY#PBF integrates a dual-channel synchronous step-down converter with digital control. It features a 40ms turn-on time and supports remote configurability and telemetry monitoring over PMBus. The device can be configured for dual 13A outputs or paralleled for a single 26A output. The switching frequency is programmable up to 1000kHz, allowing optimization between efficiency and component size. The BGA package provides excellent thermal performance, with an exposed pad for heat dissipation.
Typical applications include high-performance computing, networking equipment, telecommunications, and industrial systems where precise voltage regulation and digital power management are required. The LTM4676EY#PBF is ideal for powering FPGAs, ASICs, processors, and memory in data centers and communications infrastructure.
When designing with this device, ensure proper thermal management by using adequate PCB copper area and vias to dissipate heat from the BGA package. The PMBus interface allows real-time monitoring and control, but requires careful layout to avoid noise coupling. Refer to the LTM4676 datasheet for detailed application circuits and layout guidelines.
直接替換替代品，適用於 LTM4676EY#PBF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LTM4676EY#PBF （相同外形與佔位） — 差異在於 Input Voltage Range, Output Voltage Range, Maximum Output Current, Operating Temperature, Package.
LTM4676AEY#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTM4676IY#PBF
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LTM4676CY#PBF
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LTM4676AIV#PBF
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LTM4676AEV#PBF
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LTM4676EY#PBF 最大額定值與電氣特性
| 輸出類型 | Dual |
| 輸出電壓範圍 | 0.5 V to 5.4 V |
| 最大輸出電流 | 13 A per output (26 A single) |
| 輸入電壓範圍 | 4.5 V to 26.5 V |
| 切換頻率 | Up to 1000 kHz |
| 輸出數量 | 2 |
| 封裝 | BGA 144 (16mm × 16mm × 5.01mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40°C to +125°C (automotive grade) |
| 介面 | PMBus (I2C-based) |
| Turn-On Time | 40 ms |
| RoHS 狀態 | Compliant |
| Terminal Finish | RoHS compliant (SnPb or RoHS) |
| Number of Terminals | 144 |
| Package Shape | Square |
LTM4676EY#PBF 腳位配置
| 腳位 A1 | VOUT0 — Output voltage channel 0 |
| 腳位 A2 | VOUT1 — Output voltage channel 1 |
| 腳位 B1 | VIN — Input supply voltage |
| 腳位 B2 | GND — Ground |
| 腳位 C1 | SDA — PMBus data line |
| 腳位 C2 | SCL — PMBus clock line |
| 腳位 D1 | ALERT — PMBus alert output |
| 腳位 D2 | RUN — Enable pin |
| 腳位 E1 | FREQ — Switching frequency programming |
| 腳位 E2 | PHASE — Phase angle programming |
| 腳位 F1 | VOUT0_SENSE — Sense for channel 0 |
| 腳位 F2 | VOUT1_SENSE — Sense for channel 1 |
典型應用
LTM4676EY#PBF 適用於 6 應用s: High-Performance Computing, Networking and Telecommunications, Industrial Automation, Automotive Electronics, Data Center Power, Test and Measurement.
High-Performance Computing
The LTM4676EY#PBF provides dual 13A outputs with PMBus digital management, ideal for powering FPGAs, ASICs, and processors in servers and data centers. Its high efficiency and compact BGA package enable dense power delivery. The PMBus interface allows real-time monitoring and control of voltage and current, ensuring reliable operation in demanding computing environments.
推薦
Networking and Telecommunications
In networking equipment, the LTM4676EY#PBF powers line cards and switch ASICs requiring precise voltage regulation. Its wide input range (4.5V to 26.5V) accommodates various backplane voltages. The digital power management enables remote configuration and fault monitoring, enhancing system reliability and reducing downtime in telecom infrastructure.
推薦
Industrial Automation
The automotive temperature grade (-40°C to +125°C) makes the LTM4676EY#PBF suitable for industrial automation in harsh environments. It powers PLCs, motor controllers, and sensors with stable, low-noise outputs. The PMBus interface allows integration into industrial control systems for monitoring and diagnostics, improving overall system efficiency and uptime.
推薦
Automotive Electronics
With its automotive temperature grade, the LTM4676EY#PBF is designed for automotive applications such as ADAS, infotainment, and body control modules. It provides reliable power to processors and sensors in vehicles, with PMBus for diagnostics. The compact BGA package saves space in automotive ECUs, and the wide input range handles battery voltage variations.
推薦
Data Center Power
The LTM4676EY#PBF is ideal for data center power distribution, providing high-current, digitally managed rails for servers and storage systems. Its PMBus interface enables efficient power management and telemetry, reducing energy consumption. The high density and efficiency of the μModule package help meet strict power density requirements in modern data centers.
推薦
Test and Measurement
In test and measurement equipment, the LTM4676EY#PBF provides clean, adjustable power rails for precision instruments. Its low noise and high accuracy ensure stable operation of ADCs and DACs. The PMBus interface allows automated calibration and monitoring, making it suitable for ATE systems and laboratory instruments.
推薦
推薦產品摘要
工程參考資料，適用於 LTM4676EY#PBF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LTM4676AEY#PBF | LTM4676IY#PBF | LTM4676CY#PBF |
|---|---|---|---|---|
| Package | BGA 144 (16mm × 16mm × 5.01mm) | BGA 144 (same) | BGA 144 (same) | BGA 144 (same) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current | 13A per output (26A single) | 13A per output (26A single) | 13A per output (26A single) | 13A per output (26A single) |
| Input Voltage Range | 4.5V to 26.5V | 4.5V to 26.5V | 4.5V to 26.5V | 4.5V to 26.5V |
| Output Voltage Range | 0.5V to 5.4V | 0.5V to 5.4V | 0.5V to 5.4V | 0.5V to 5.4V |
| Switching Frequency | Up to 1000kHz | Up to 1000kHz | Up to 1000kHz | Up to 1000kHz |
| Temperature Grade | Automotive (-40°C to +125°C) | Automotive (-40°C to +125°C) | Industrial (-40°C to +85°C) | Commercial (0°C to +70°C) |
| PMBus Interface | Yes | Yes | Yes | Yes |
主要差異化特點
- Automotive temperature grade (對比LTM4676IY#PBF)
- Pin-compatible with improved LTM4676A (對比LTM4676AEY#PBF)
- PMBus digital power management (對比LTM4676CY#PBF)
設計說明
The LTM4676EY#PBF dissipates significant power at high currents. For example, at 26A output and 12V input, power loss can be several watts. Use a 4-layer PCB with thermal vias under the BGA package to conduct heat to inner and bottom layers. Ensure adequate copper area for heat spreading. Refer to the datasheet's thermal performance curves for derating.
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors (e.g., 22µF) for input and output. For PMBus signals, route SDA and SCL with proper pull-up resistors (typically 2.2kΩ to 3.3V) and keep traces short to avoid noise. Follow the layout guidelines in the datasheet for optimal performance.
Ensure the PMBus address is set correctly using the ADDR pin to avoid conflicts on the bus. Do not exceed the absolute maximum input voltage of 26.5V. When paralleling channels for 26A output, follow the exact configuration in the datasheet to ensure current sharing. Also, verify the switching frequency setting to avoid interference with sensitive circuits.
合規資訊
RoHS compliant terminal finish per datasheet. Automotive temperature grade but not AEC-Q100 qualified per available data.
