LTC3887 / LTC3887-1 - 具数字电源系统管理功能的双输出 PolyPhase 降压型 DC/DC 控制器
LTC®3887 / LTC3887-1 是一款双通道、多相 DC/DC 同步降压型开关稳压控制器，其具有一个符合基于 I2C 的 PMBus 标准之串行接口。该控制器运用了一种恒定频率、电流模式架构，此器件得到了具有图形用户界面 (GUI) 的 LTPowerPlayTM 软件开发工具的支持。
开关频率、通道调相、输出电压和器件地址可采用外部配置电阻器来设置。此外，参数还可以通过数字接口来设定或存储于 EEPROM 中。电压、电流、内部 / 外部温度和故障状态则可通过总线接口来回读。
LTC3887 具有集成型栅极驱动器。LTC3887-1 有三态PWM引脚以驱动电源模块或 DrMOS 功率级。LTC3887 是 LTC3880 的增强型版本，其拥有更大的输出电压范围和更多的数字特性。更多详情请参阅第 15 页。
特点
典型应用  | 应用
封装信息 |
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
|---|---|---|---|---|
| LTC3887EUJ-1#PBF | 6x6 QFN-40 | E | $7.82 | $5.47 |
| LTC3887EUJ-1#TRPBF | 6x6 QFN-40 | E | $5.53 | |
| LTC3887EUJ#PBF | 6x6 QFN-40 | E | $7.82 | $5.47 |
| LTC3887EUJ#TRPBF | 6x6 QFN-40 | E | $5.53 | |
| LTC3887IUJ-1#PBF | 6x6 QFN-40 | I | $8.99 | $6.29 |
| LTC3887IUJ-1#TRPBF | 6x6 QFN-40 | I | $6.35 | |
| LTC3887IUJ#PBF | 6x6 QFN-40 | I | $8.99 | $6.29 |
| LTC3887IUJ#TRPBF | 6x6 QFN-40 | I | $6.35 |
演示电路板
| 器件型号 | 描述 | 价格 |
|---|---|---|
| DC1709A | LTC3880/-1 & LTC3887/-1 Demo Board I Programming Clamshell Socketed Demo Board | $125.00 |
| DC2263A-A | LTC3887EUJ Demo Board (RSENSE) | Dual PMBus Buck, 7V ≤ VIN ≤ 18V, Vout0/Vout1 = 0.8V to 1.8V @ 25A | 联系凌力尔特 |
| DC2263A-B | LTC3887EUJ Demo Board (DCR SENSE) | 2 Phase PMBus Buck, 7V ≤ VIN ≤ 18V, Vout = 0.8V to 1.8V @ 50A | 联系凌力尔特 |
| DC2394A | LTC3887EUJ-1 Demo Board (DCR Sense) | PMBus Buck with DrMOS, 7V ≤ VIN ≤ 14V, Vout0/Vout1 = 0.8V to 1.8V @ 30A | 联系凌力尔特 |
| DC2454A | LTC3887EUJ-1/LTC3870EUF-1 Demo Board | Dual Phase PMBus Buck Controller with Slave Controller, 7V ≤ VIN ≤ 14V, 0.8V ≤ VOUT ≤ 1.8V @ 100A | 联系凌力尔特 |
| 器件型号 | 描述 | 价格 |
|---|---|---|
| DC1613A | USB-to-PMBus Controller for Use with LTpowerPlay | $50.00 |
| DC2026C | Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform | $75.00 |
| DC2086A | Powered Programming Adapter for Digital Power System Management Products | $199.00 |
- Product Errata - LTC3887
- AN145 - Overview of the EEPROM in LTC PSM Devices
- R526 - Reliability Data
- Digital Power System Management
- LTC3880 to LTC3887 - Migration Guide
- 具数字电源系统管理功能的双输出降压型 DC/DC 控制器以 70ms 快速启动能力驱动 DrMOS 和电源模块
- Dual Synchronous Step-Down DC/DC Controller with Digital Power System Management & Fast 70ms Start-Up
- LTC3887 Footprints and Symbols
- LTC3887 Project - Dual Output PolyPhase Step-Down DC/DC Controller with Inductor DCR Current Sensing (7-14V to 1V @ 50A)
- LTC3887 Project - Dual Output PolyPhase Step-Down DC/DC Controller with Inductor DCR Current Sensing (7-14V to 1V & 1.8V @ 25A)
- LTC3887 Project - Dual Output PolyPhase Step-Down DC/DC Controller with Rsense Current Sensing (7-14V to 1V & 1.8V @ 25A)
- LTC3887 - DC2263A.ino
- LTC3887 - Linduino CPP File
- LTC3887 - Linduino Header File
