LTC3883/LTC3883-1- Single Phase Step-Down DC/DC Controller with Digital Power System Management
The LTC®3883/LTC3883-1 are PolyPhase capable DC/DC synchronous step-down switching regulator controllers with a PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by the LTPowerPlay™ software development tool with graphical user interface (GUI).
Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Additionally, parameters can be set via the digital interface or stored in on-chip EEPROM.
The LTC3883/LTC3883-1 can be configured for Burst Mode® operation, discontinuous (pulse-skipping) mode or continuous inductor current mode. The LTC3883 incorporates an internal 5V linear regulator while the LTC3883-1 uses an external 5V supply for minimum power loss.
The LTC3883/LTC3883-1 are available in a 32-lead 5mm × 5mm QFN package.
Features
Typical Application  | Applications
Packaging  |
Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC3883EUH-1#PBF | 5x5 QFN-32 | E | $6.89 | $4.82 |
| LTC3883EUH-1#TRPBF | 5x5 QFN-32 | E | $4.88 | |
| LTC3883EUH#PBF | 5x5 QFN-32 | E | $6.89 | $4.82 |
| LTC3883EUH#TRPBF | 5x5 QFN-32 | E | $4.88 | |
| LTC3883IUH-1#PBF | 5x5 QFN-32 | I | $7.56 | $5.29 |
| LTC3883IUH-1#TRPBF | 5x5 QFN-32 | I | $5.35 | |
| LTC3883IUH#PBF | 5x5 QFN-32 | I | $7.56 | $5.29 |
| LTC3883IUH#TRPBF | 5x5 QFN-32 | I | $5.35 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC1778B-A | LTC3883EUH Demo Board | 6.5V < VIN < 24V; 0.5V < VOUT < 5V @ 20A, with RSENSE Current Sense | Contact Factory |
| DC2052A | LTC3880EUJ/LTC3883EUH, 3-Phase Demo Board, Vin Range: 6.5V to 14V, Vout Range: 0.5V to 1.8V @ 60A, PMBus Controlled, works w/ DC1613 Dongle | $250.00 |
Companion Boards
| Part Number | Description | Price |
|---|---|---|
| DC1613A | USB-to-PMBus Controller for Use with LTpowerPlay | $50.00 |
- LTC3883 Package Drawing LTC3883
- Product Errata - LTC3883/LTC3883-1
- AN137 - Accurate Temperature Sensing with an External P-N Junction
- AN145 - Overview of the EEPROM in LTC PSM Devices
- DN517 - 具有电源系统管理功能的高性能单相 DC/DC 控制器
- R526 - Reliability Data
- Digital Power System Management
- PMBus DC/DC Converters with Power System Management
- PMBus Power System Managers
- Power and Thermal Monitoring
- DC/DC Controller Combines Digital Power System Management with Analog Control Loop for ±0.5% VOUT Accuracy
- High Performance Single Phase DC/DC Controller with Digital Power Management
- Design Checklist for LTC388X Family of PSM Buck Converters
- DC/DC 控制器兼有数字电源系统管理功能和模拟控制环路以实现 ±0.5% 的 Vout 准确度
- 具数字电源管理功能的高性能单相 DC/DC 控制器
- 具备 I2C / PMBus 数字电源系统管理和内置 EEPROM 的同步降压型 DC/DC 控制器
- LTC3883 Footprints and Symbols
- LTC3883 Demo Circuit - High Efficiency 425kHz 1.8V Step-Down Converter with Inductor DCR Current Sensing (6-24V to 1.8V @ 20A)
- LTC3883 Project - Single Phase Step-Down DC/DC Controller with Digital Power System Management & Inductor DCR Current Sensing (6.5-24V to 1.8V @ 20A)
- LTC3883 Project - Single Phase Step-Down DC/DC Controller with Digital Power System Management & Rsense Current Sensing (6.5-24V to 1.8V @ 20A)
- LTC3883 - DC1778A Linduino .INO File
- LTC3883 - Linduino CPP File
- LTC3883 - Linduino Header File
