LTM4643EY#PBF - Quad 3A µModule Regulator | Analog Devices
N.º de pieza: LTM4643EY#PBF ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $28.73 | $28,73 |
| 10 | $26.64 | $266,40 |
| 100 | $24.55 | $2.455,00 |
| 500 | $22.46 | $11.230,00 |
| 1.000 | $20.37 | $20.370,00 |
LTM4643EY#PBF Descripción general
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.
Alternativas directas para LTM4643EY#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 LTM4643EY#PBF (mismo factor de forma y huella) — difiere en Input Voltage Range, Package.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LTM4643IV#PBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTM4643MPY
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTM4643EY#PBF
✅ Sustitución directa✓ En stock
$20.37 / unidad
Ver hoja de datos →LTM4643IY#PBF
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$15.9 / unidad
Ver hoja de datos →LTM4643MPY#PBF
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
LTM4643EY#PBF
✅ Sustitución directa✓ En stock
$20.37 / unidad
Ver hoja de datos →LTM4643EY#PBF Valores máximos y características eléctricas
| Tipo de salida | Adjustable |
| Número de salidas | 4 |
| Rango de tensión de salida | 0.6 V to 3.3 V |
| Output Current per Channel | 3 A |
| Total Output Current (Parallel) | 12 A |
| Rango de tensión de entrada | 4 V to 20 V (2.375 V to 20 V with external bias) |
| Frecuencia de conmutación | 1.2 MHz (max) |
| Encapsulado | BGA-77 |
| Tipo de montaje | Surface Mount |
| Rango de temperatura de funcionamiento | -40°C to +125°C |
| Estado RoHS | Compliant |
| Number of Terminals | 77 |
| Package Shape | Rectangular |
| Surface Mount | Yes |
| Temperature Grade | Other |
Configuración de pines de LTM4643EY#PBF
| Pin A1 | VIN — Input supply voltage |
| Pin A2 | VOUT1 — Output 1 |
| Pin A3 | VOUT2 — Output 2 |
| Pin A4 | VOUT3 — Output 3 |
| Pin A5 | VOUT4 — Output 4 |
| Pin B1 | GND — Ground |
| Pin B2 | FB1 — Feedback for output 1 |
| Pin B3 | FB2 — Feedback for output 2 |
| Pin B4 | FB3 — Feedback for output 3 |
| Pin B5 | FB4 — Feedback for output 4 |
| Pin C1 | RUN1 — Enable for output 1 |
| Pin C2 | RUN2 — Enable for output 2 |
| Pin C3 | RUN3 — Enable for output 3 |
| Pin C4 | RUN4 — Enable for output 4 |
| Pin C5 | PGOOD — Power good indicator |
Aplicaciones típicas
LTM4643EY#PBF es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LTM4643EY#PBF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Quad output with 3A per channel (frente a LTM4643IV#PBF)
- Wide input voltage range (frente a LTM4643MPY)
- High switching frequency (frente a LTM4643IY#PBF)
Notas de diseño
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.
Información de cumplimiento
RoHS compliant per 'PBF' suffix. Other compliance data not specified in provided sources.
