LTC3882
RECOMMENDED FOR NEW DESIGNSDual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management
- Part Models
- 9
- 1ku List Price
- Starting From $8.07
Overview
- PMBus/I2C Compliant Serial Interface
- Monitor Voltage, Current, Temperature and Faults
- Digitally Programmable Voltage, Current Limit, Soft-Start/Stop, Sequencing, Margining, AVP and UV/OV Thresholds
- 3V ≤ VINSNS ≤ 38V, 0.5V ≤ VOUT ≤ 5.25V
- ±0.5% Output Voltage Accuracy
- Programmable PWM Frequency or External Clock Synchronization from 250kHz to 1.25MHz
- Accurate PolyPhase® Current Sharing
- Internal EEPROM with Fault Logging and ECC
- IC Supply Range: 3V to 13.2V
- Resistor or Inductor DCR Current Sensing
- Optional Resistor Programming for Key Parameters
- 40-Pin (6mm × 6mm) QFN Package
- AEC-Q100 Qualified for Automotive Applications
The LTC3882 is a dual, PolyPhase DC/DC synchronous step-down switching regulator controller with PMBus compliant serial interface. It uses a constant frequency, leading-edge modulation, voltage mode architecture for excellent transient response and output regulation. Each PWM channel can produce output voltages from 0.5V to 5.25V using a wide range of 3.3V compatible power stages, including power blocks, DrMOS or discrete FET drivers. Up to four LTC3882s can operate in parallel for 2-, 3-, 4-, 6- or 8-phase operation.
LTC3882 system configuration and monitoring is supported by the LTpowerPlay® software tool. The device’s serial interface can be used to read back input voltage, output voltage and current, temperature and fault status. A wide range of operating parameters can be set via the digital interface or stored in internal EEPROM for use at power up. Switching frequency and phase, output voltage and device address can also be programmed using external configuration resistors.
| PWM Enable Output | TG/BG Control | HW Write Protect | Dedicated PGOOD | Differential VOUT Sense | |
| LTC3882 | Yes | Yes | Yes | No | VOUT0 Only |
| LTC3882-1 | No | No | No | Yes | VOUT0 & VOUT1 |
Applications
- High Current Distributed Power Systems
- Servers, Network and Storage Equipment
- Intelligent Energy Efficient Power Regulation
- Industrial/Telecom/ATE Systems
Documentation
Data Sheet 1
User Guide 4
Application Note 7
Technical Articles 2
Informational 1
Spec Notice 1
Video 3
Device Drivers 1
Brochure 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3882CIUJ#TRPBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882EUJ#PBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882EUJ#TRPBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882EUJ#WPBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882EUJ#WTRPBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882IUJ#PBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882IUJ#TRPBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882IUJ#WPBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) | ||
| LTC3882IUJ#WTRPBF | 40-Lead QFN (6mm x 6mm x 0.75mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Power System Management (PSM) & Sequencers 1 | ||
| LTC2974 | RECOMMENDED FOR NEW DESIGNS | 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LTC3880 | RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management |
|
LTC3882-1 LTC3882-2 |
RECOMMENDED FOR NEW DESIGNS | Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC3882
- LTC3882-1
- LTC3882-2
Linduino 3
LTpowerCAD 1
Design tools for the following parts are available in LTpowerCAD:
- LTC3882
- LTC3882-1
IBIS Model 1
LTpowerPlay®
LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Evaluation Kits
LTC3882EUJ Demo Board | Dual Buck Voltage Mode Controller with PSM, 7V ≤ VIN ≤ 14V; 0.8V ≤ VOUT0 ≤ 1.8V @ 30A, 0.8V ≤ VOUT1 ≤ 1.8V @ 30A
Resources
Software
LTC3882EUJ Demo Board | Dual Buck Voltage Mode Controller with PSM, 7V ≤ VIN ≤ 14V; 0.8V ≤ VOUT0 ≤ 1.8V @ 30A, 0.8V ≤ VOUT1 ≤ 1.8V @ 30A
Resources
Software
LTC3882EUJ Demo Board │LTC3882 (x2) 4-Phase PMBus Buck , 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 2V @ 140A
Resources
LTC3882EUJ Demo Board │LTC3882 (x2) 4-Phase PMBus Buck , 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT ≤ 2V @ 140A
Resources
LTC3882EUJ Demo Board | Dual Phase Single Output PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 70A
Resources
Software
LTC3882EUJ Demo Board | Dual Phase Single Output PMBus Buck, 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 70A
Resources
Software
LTC3882EUJ Demo Board | EEPROM Programming Board for LTC3882
Resources
Software
LTC3882EUJ Demo Board | EEPROM Programming Board for LTC3882
Resources
Software
LTC3882EUJ Demo Board | 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 35A, 0.5V ≤ VOUT1 ≤ 2V @ 35A
Resources
Software
LTC3882EUJ Demo Board | 7V ≤ VIN ≤ 14V; 0.5V ≤ VOUT0 ≤ 2V @ 35A, 0.5V ≤ VOUT1 ≤ 2V @ 35A
Resources
Software
Reference Designs
