LTM4677 - Dual 18A or Single 36A μModule (Power Module) Regulator with Digital Power System Management
The LTM®4677 is a dual 18A or single 36A step-down μModule® (power module) DC/DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over PMBus— an open standard I2C-based digital interface protocol. The LTM4677 is comprised of fast analog control loops, precision mixedsignal circuitry, EEPROM, power MOSFETs, inductors and supporting components.
The LTM4677’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pin-strapping resistors. The LTpowerPlay™ GUI and DC1613 USB-to-PMBus converter and demo kits are available.
The LTM4677 is pin compatible with the LTM4676A (dual 13A) and is offered in a 16mm × 16mm × 5.01mm BGA package available with SnPb or RoHS compliant terminal finish.
Features
Typical Application  | Applications
Packaging |
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTM4677EY#PBF | 16mm x 16mm x 5.01mm BGA | E | $56.57 | $39.60 |
| LTM4677IY#PBF | 16mm x 16mm x 5.01mm BGA | I | $62.23 | $43.56 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC2066A | LTM4677EY Demo Board | μModule Regulator With Digital PSM, 4.5V ≤ VIN ≤ 16V, Vout0 = Vout1 = 0.5V to 1.8V @ 18A | $65.00 |
| DC2143A-A | LTM4677 Demo Board | 2x LTM4677 Buck μModule with Digital PSM, 4.5V ≤ VIN ≤ 20V, Vout = 0.5V to 1.8V @ 72A | $105.00 |
| DC2143A-B | LTM4677 Demo Board | µModule PMBus Buck, LTM4677(x3), 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 108A | $135.00 |
| DC2143A-C | LTM4677 Demo Board | µModule PMBus Buck, LTM4677(x4), 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 144A | $165.00 |
| DC2204A | LTM4675 + LTM4676A + LTM4677 + LTM4620A Demo Board | PSM μModule Power Stick | $125.00 |
| DC2481A-A | LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650, 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 86A | $125.00 |
| DC2481A-B | LTM4677/LTM4650 Demo Board | Buck μModule Regulator with Digital PSM, LTM4677 + LTM4650(x3), 4.5V ≤ VIN ≤ 16V, Vout = 0.5V to 1.8V @ 186A | $125.00 |
- 在紧凑的 PCB 面积内提供高功率以及完整的数字控制和遥测功能
- 如何设计一个紧凑的数字电源管理系统
- 具 PMBus 数字接口的 36A 单输出或 18A 双输出μModule 稳压器可进行高达 144A 均流
- AN145 - Overview of the EEPROM in LTC PSM Devices
- R504 - Reliability Data
- SnPb (Tin-Lead) BGA Packages μModule Power Products
- μModule Power Products Catalog
- Avoid Debugging Cycles in Power Management for FPGA, GPU and ASIC Systems
- Deliver High Power with Complete Digital Control & Telemetry in Compact PCB Area
- Ultrathin & High Power µModule Regulators Are Ideal for Communications Systems
- 36A Single or 18A Dual µModule Regulator with PMBus Digital Interface Can Current Share Up to 144A
- LTM4677 Footprints and Symbols
- LTM4677 & LTM4650 Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (4.5-16V to 1V @ 86A)
- LTM4677 & LTM4650 Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (4.5-16V to 1V @186A)
- LTM4677 Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (5.75-16V to 1V @ 108A)
- LTM4677 Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (5.75-16V to 1V @ 144A)
- LTM4677 Demo Circuit - High Current, Parallel µModule Buck Regulators with Power System Management (5.75-16V to 1V @ 72A)
- LTM4677 Project - Dual 18A μModule Regulator (4.5-15V to 1.8V & 1V @ 18A)
- LTM4677 - Linduino CPP File
- LTM4677 - Linduino Header File
