LTM4643EY#PBF - Quad 3A µModule Regulator | Analog Devices
MPN: LTM4643EY#PBF ✓ Hoạt độngLTM4643EY#PBF Tóm tắt
A µModule regulator is a complete DC-DC converter system-in-package that includes the controller, power stage, inductors, and compensation, offering a high level of integration and ease of use. It belongs to the broader category of power management ICs, specifically switching regulators, and is designed for point-of-load (PoL) applications where space is critical and efficiency is paramount. The LTM4643EY#PBF is part of the LTM4643 series, which is known for its ultrathin profile and high power density.
Key features include a wide input voltage range, configurable output voltage, high efficiency, and the ability to parallel outputs for higher current. The module operates at a switching frequency up to 1.2 MHz, allowing for small external components. It also includes output voltage tracking and sequencing capabilities, making it suitable for complex power supply designs. The BGA-77 package provides excellent thermal performance, with a low thermal resistance that enables operation at high ambient temperatures without derating.
The LTM4643EY#PBF uses a current-mode control architecture, ensuring stable operation over a wide range of load conditions. The integrated inductors and power FETs reduce parasitic losses, contributing to high efficiency across the load range. The module also features overcurrent and overtemperature protection, enhancing system reliability.
Typical applications include power supplies for FPGAs, ASICs, processors, and other digital ICs in networking, telecommunications, industrial, and data center equipment. The quad output configuration is ideal for powering multiple voltage rails from a single module, reducing component count and board area.
When designing with the LTM4643EY#PBF, it is important to consider input and output capacitor selection, as well as thermal management. The module's exposed pad should be connected to a large copper area for heat dissipation. Additionally, the input voltage range and output current requirements must be carefully evaluated to ensure proper operation.
Bộ thay thế dễ dàng lắp đặt cho LTM4643EY#PBF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LTM4643EY#PBF (cùng hình factor và footprint) — khác nhau ở Input Voltage Range, Package.
LTM4643IV#PBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTM4643MPY
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LTM4643EY#PBF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTM4643IY#PBF
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LTM4643MPY#PBF
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LTM4643EY#PBF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LTM4643EY#PBF Tỷ lệ tối đa & tính chất điện
| Kiểu đầu ra | Adjustable |
| Số lượng đầu ra | 4 |
| Khoảng điện áp đầu ra | 0.6 V to 3.3 V |
| Output Current per Channel | 3 A |
| Total Output Current (Parallel) | 12 A |
| Phạm vi điện áp đầu vào | 4 V to 20 V (2.375 V to 20 V with external bias) |
| Tần số chuyển đổi | 1.2 MHz (max) |
| Hộp | BGA-77 |
| Kiểu lắp đặt | Surface Mount |
| Khoảng nhiệt độ hoạt động | -40°C to +125°C |
| Trạng thái RoHS | Compliant |
| Number of Terminals | 77 |
| Package Shape | Rectangular |
| Surface Mount | Yes |
| Temperature Grade | Other |
Cấu hình chân LTM4643EY#PBF
| Chân A1 | VIN — Input supply voltage |
| Chân A2 | VOUT1 — Output 1 |
| Chân A3 | VOUT2 — Output 2 |
| Chân A4 | VOUT3 — Output 3 |
| Chân A5 | VOUT4 — Output 4 |
| Chân B1 | GND — Ground |
| Chân B2 | FB1 — Feedback for output 1 |
| Chân B3 | FB2 — Feedback for output 2 |
| Chân B4 | FB3 — Feedback for output 3 |
| Chân B5 | FB4 — Feedback for output 4 |
| Chân C1 | RUN1 — Enable for output 1 |
| Chân C2 | RUN2 — Enable for output 2 |
| Chân C3 | RUN3 — Enable for output 3 |
| Chân C4 | RUN4 — Enable for output 4 |
| Chân C5 | PGOOD — Power good indicator |
Ứng dụng tiêu biểu
LTM4643EY#PBF phù hợp cho 6 Áp dụngs: FPGA Power Supplies, ASIC and Processor Power, Networking Equipment, Industrial Automation, Data Center and Server Power, Telecommunications.
FPGA Power Supplies
The LTM4643EY#PBF provides four independent 3A outputs, ideal for powering FPGA rails such as VCCINT, VCCAUX, and VCCO. Its adjustable output from 0.6V to 3.3V matches common FPGA core and I/O voltages. The high efficiency and integrated inductors reduce heat and board space, enabling compact designs. With a wide input range of 4V to 20V, it can be powered from a 12V intermediate bus. The module's current-mode control ensures stable operation under dynamic loads typical of FPGA operation.
Được đề xuất
ASIC and Processor Power
The LTM4643EY#PBF can power ASICs and processors that require multiple low-voltage rails. Its quad outputs can be configured to provide different voltages, such as 1.0V, 1.2V, 1.8V, and 3.3V, from a single module. The high current capability of 3A per output is sufficient for many digital ICs. The module's low profile and small footprint are advantageous in space-constrained designs. Additionally, the ability to parallel outputs allows for higher current if needed, providing design flexibility.
Được đề xuất
Networking Equipment
In networking equipment such as switches and routers, the LTM4643EY#PBF provides efficient power conversion for line cards and switch fabrics. Its wide input range accommodates 12V or 24V backplane voltages. The quad outputs can power multiple logic rails, reducing component count and improving reliability. The module's high efficiency minimizes heat generation, which is critical in densely packed networking chassis. The integrated inductors and capacitors simplify PCB layout and reduce electromagnetic interference.
Được đề xuất
Industrial Automation
The LTM4643EY#PBF is suitable for industrial automation systems that require robust power supplies. Its input voltage range of 4V to 20V covers common industrial supply rails. The module's wide operating temperature range (-40°C to +125°C) ensures reliable operation in harsh environments. The integrated protection features, such as overcurrent and overtemperature shutdown, enhance system safety. The compact BGA-77 package allows for high-density PCB designs in control cabinets and PLCs.
Được đề xuất
Data Center and Server Power
In data centers and servers, the LTM4643EY#PBF provides efficient point-of-load conversion for CPUs, GPUs, and memory. Its quad outputs can power multiple voltage rails, such as Vcore, VCCIO, and VDDQ, from a single module. The high efficiency reduces power loss and cooling requirements, contributing to lower total cost of ownership. The module's ability to parallel outputs allows for scaling to higher currents. The small footprint enables high-density server boards.
Được đề xuất
Telecommunications
The LTM4643EY#PBF is ideal for telecommunications equipment, including base stations and optical transport systems. Its wide input range supports 12V or 24V telecom supplies. The quad outputs can power multiple logic and interface rails, simplifying power distribution. The module's high efficiency and low noise are beneficial for sensitive communication circuits. The compact package allows for dense board layouts in rack-mounted equipment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTM4643EY#PBF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | LTM4643IV#PBF | LTM4643MPY | LTM4643IY#PBF |
|---|---|---|---|---|
| Package | BGA-77 | BGA-77 | BGA-77 | BGA-77 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Output Current per Channel | 3 A | 3 A | 3 A | 3 A |
| Input Voltage Range | 4V to 20V | 4V to 20V | 4V to 20V | 4V to 20V |
| Output Voltage Range | 0.6V to 3.3V | 0.6V to 3.3V | 0.6V to 3.3V | 0.6V to 3.3V |
| Switching Frequency | 1.2 MHz (max) | 1.2 MHz (max) | 1.2 MHz (max) | 1.2 MHz (max) |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -55°C to +125°C | -40°C to +125°C |
| RoHS | Compliant | Compliant | Non-compliant | Compliant |
Bảo phân biệt quan trọng
- Quad output with 3A per channel (vsLTM4643IV#PBF)
- Wide input voltage range (vsLTM4643MPY)
- High switching frequency (vsLTM4643IY#PBF)
Ghi chú thiết kế
The LTM4643EY#PBF in BGA-77 package has an exposed pad that must be soldered to a large copper area for heat dissipation. For high current operation, ensure adequate thermal vias and a copper pour on the PCB to keep the junction temperature within limits. Refer to the datasheet's thermal derating curves.
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use low-ESR ceramic capacitors, typically 10µF to 22µF per output. The datasheet provides recommended capacitor values and layout guidelines for optimal performance.
Ensure the input voltage does not exceed the absolute maximum rating of 20V (or 26V with bias). Also, verify that the output voltage setting resistors are accurate to avoid overvoltage. The RUN pins can be used for sequencing; ensure proper timing to avoid inrush current issues.
Thông tin tuân thủ
RoHS compliant per 'PBF' suffix. Other compliance data not specified in provided sources.
