LTM4650IY#PBF - Dual 25A or Single 50A μModule Regulator | Analog Devices
料号： LTM4650IY#PBF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $66.54 | $66.54 |
| 10 | $62.5 | $625.00 |
| 100 | $58 | $5,800.00 |
| 500 | $54 | $27,000.00 |
| 1,000 | $50 | $50,000.00 |
LTM4650IY#PBF 概述
A μModule regulator is a complete DC/DC power supply in a single package, combining the controller, MOSFETs, inductor, and compensation into a module. This approach reduces design complexity, minimizes external component count, and accelerates time-to-market. The LTM4650 belongs to the family of μModule regulators, which are part of the broader category of switching voltage regulators and power management ICs. By integrating the magnetic components, the μModule ensures predictable performance and simplifies thermal management.
Key features include dual 25A outputs or a single 50A output, 0.8% DC and 3% transient accuracy (for the -1A variant), and a wide input range of 4.5V to 15V. The module supports output voltage tracking and remote sensing for precise regulation at the load point. The LTM4650IY#PBF is the industrial temperature grade variant, guaranteed from -40°C to 125°C internal temperature, ensuring reliable operation in harsh environments.
Technically, the LTM4650 uses a current-mode control architecture with internal compensation, providing fast transient response and stable operation. The integrated inductors and power FETs are optimized for efficiency, reducing power losses. The module includes overcurrent and overtemperature protection, enhancing system reliability. The BGA package (144 terminals) offers excellent thermal performance, with the exposed pad facilitating heat transfer to the PCB.
Typical applications include high-current FPGA, ASIC, and processor power supplies, where multiple rails with tight voltage tolerances are required. The dual outputs can be paralleled to deliver up to 50A for a single rail, making it suitable for high-performance computing, networking, and telecommunications equipment. The wide input range also supports 12V bus architectures common in industrial and automotive systems.
When designing with the LTM4650, ensure adequate input and output capacitance to meet transient requirements. The module's remote sense pins should be connected to the load point to maintain regulation accuracy. Thermal management is critical at high output currents; use a multi-layer PCB with thermal vias to dissipate heat effectively.
直接替换替代料： LTM4650IY#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： LTM4650IY#PBF （相同外形与封装尺寸） ——差异在于 Output Type, Package, Output Voltage Range, Maximum Output Current, Operating Temperature Range.
快速对比工具——选择替代料号进行并排对比：
LTM4650IY-1A#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTM4650MPY
✅ 直接替换📋 参考替代料（不在目录中）
LTM4650IY-1B#PBF
✅ 直接替换📋 参考替代料（不在目录中）
LTM4650A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LTM4630AEY#PBF
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LTM4650IY#PBF 最大额定值与电气特性
| 输出类型 | Dual (2 outputs) |
| 输出电压范围 | 0.6 V to 1.8 V (each output) |
| 最大输出电流 | 25 A per output, 50 A single output |
| 输入电压范围 | 4.5 V to 15 V |
| DC Accuracy | 0.8% (for -1A variant) |
| Transient Accuracy | 3% (for -1A variant) |
| 工作温度范围 | -40°C to 125°C (internal) |
| 封装 | BGA (144 terminals) |
| 安装类型 | Surface Mount |
| 输出数量 | 2 |
| Isolation | Non-Isolated |
| RoHS 状态 | Compliant |
LTM4650IY#PBF 引脚配置
| 引脚 A1 | VIN — Input voltage |
| 引脚 B1 | VOUT1 — Output 1 |
| 引脚 C1 | VOUT2 — Output 2 |
| 引脚 D1 | GND — Ground |
| 引脚 E1 | RUN1 — Enable for output 1 |
| 引脚 F1 | RUN2 — Enable for output 2 |
| 引脚 G1 | TRACK/SS1 — Tracking/soft-start for output 1 |
| 引脚 H1 | TRACK/SS2 — Tracking/soft-start for output 2 |
| 引脚 J1 | SENSE1+ — Remote sense positive for output 1 |
| 引脚 K1 | SENSE1- — Remote sense negative for output 1 |
| 引脚 L1 | SENSE2+ — Remote sense positive for output 2 |
| 引脚 M1 | SENSE2- — Remote sense negative for output 2 |
典型应用
LTM4650IY#PBF 适用于 6 应用s: FPGA and ASIC Power Supplies, Networking and Telecom Equipment, Data Center and Cloud Computing, Industrial Automation and Robotics, Automotive and Transportation, Test and Measurement Equipment.
FPGA and ASIC Power Supplies
The LTM4650IY#PBF provides dual 25A outputs with 0.6V to 1.8V range, ideal for powering FPGA core and I/O rails. Its high efficiency and integrated inductors reduce board space and simplify layout, while remote sensing ensures accurate voltage at the load point. The module's fast transient response meets the dynamic current demands of modern FPGAs, and its wide input range supports 12V intermediate bus architectures.
推荐
Networking and Telecom Equipment
In networking and telecom systems, the LTM4650IY#PBF powers high-current ASICs and line cards. Its dual outputs can be paralleled for a single 50A rail, providing flexibility. The module's -40°C to 125°C operating range ensures reliability in outdoor and industrial environments. The integrated design reduces component count, improving MTBF and simplifying thermal management in dense boards.
推荐
Data Center and Cloud Computing
The LTM4650IY#PBF is well-suited for data center servers and cloud computing platforms where high-current, low-voltage rails are required for CPUs and GPUs. Its 50A single-output capability and 0.8% DC accuracy ensure stable power delivery. The module's high efficiency reduces cooling requirements, and its compact BGA package enables high-density designs. Remote sensing compensates for PCB trace voltage drops, maintaining regulation at the load.
推荐
Industrial Automation and Robotics
In industrial automation, the LTM4650IY#PBF powers motor controllers, PLCs, and robotic systems. Its wide input range (4.5V to 15V) accommodates 12V and 24V industrial buses with appropriate conversion. The module's rugged design and -40°C to 125°C temperature range ensure operation in harsh factory environments. The integrated inductors and protection features reduce external component count and enhance system reliability.
推荐
Automotive and Transportation
The LTM4650IY#PBF is suitable for automotive infotainment, ADAS, and telematics systems that require high-current, low-voltage power. Its input range covers 12V automotive batteries, and the industrial temperature grade supports under-hood applications. The module's high efficiency minimizes heat generation, and its compact size fits space-constrained designs. However, for AEC-Q100 compliance, consider the LTM4650IY-1A#PBF or other automotive-grade variants.
推荐
Test and Measurement Equipment
The LTM4650IY#PBF provides clean, accurate power for test and measurement instruments, such as oscilloscopes and signal generators. Its low output noise and tight regulation (0.8% DC) ensure stable reference voltages. The dual outputs can power analog and digital sections separately, reducing interference. The module's remote sensing maintains accuracy at the load, critical for precision measurements.
推荐
工程参考数据： LTM4650IY#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 | LTM4650IY-1A#PBF | LTM4650MPY | LTM4650IY-1B#PBF | LTM4650A | LTM4630AEY#PBF |
|---|---|---|---|---|---|---|
| Package | BGA (144) | BGA (144) | BGA (144) | BGA (144) | BGA (144) | BGA (144) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current (per output) | 25A | 25A | 25A | 25A | 25A | 18A |
| Input Voltage Range | 4.5V to 15V | 4.5V to 15V | 4.5V to 15V | 4.5V to 15V | 4.5V to 15V | 4.5V to 15V |
| Output Voltage Range | 0.6V to 1.8V | 0.6V to 1.8V | 0.6V to 1.8V | 0.6V to 1.8V | 0.6V to 1.8V | 0.6V to 5.5V |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | -55°C to 125°C | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C |
| Special Features | Dual 25A or single 50A | Improved accuracy | Military grade | Variant | Enhanced tracking | Lower current |
关键差异点
- Dual 25A or single 50A output capability （对比 LTM4630AEY#PBF)
- Industrial temperature grade (-40°C to 125°C) （对比 LTM4650MPY)
- Integrated inductors and power FETs （对比 Discrete solutions)
设计说明
At 50A output, power dissipation can be significant. Use a multi-layer PCB with thermal vias under the module to conduct heat to inner ground planes. The BGA package's exposed pad should be soldered to a large copper area. Ensure adequate airflow or heatsinking for high ambient temperature operation.
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors for high-frequency decoupling. The datasheet recommends specific capacitor values and types; follow them for stable operation. Route sense lines as differential pairs to avoid noise pickup.
Do not exceed the maximum input voltage of 15V. Ensure the output voltage is set correctly with the external resistor. The TRACK/SS pins should be connected to a capacitor for proper soft-start; leaving them floating may cause startup issues. Verify the module's thermal derating at high currents.
合规信息
RoHS compliant per Analog Devices product page. AEC-Q100 not applicable for this industrial-grade module.
