LTC3887EUJ-1#PBF
ActiveDUAL OUTPUT POLYPHASE STEP-DOWN DC/DC CONTROLLER WITH DIGITAL POWER SYSTEM MANAGEMENT
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LTC3887EUJ-1#PBF
ActiveDUAL OUTPUT POLYPHASE STEP-DOWN DC/DC CONTROLLER WITH DIGITAL POWER SYSTEM MANAGEMENT
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3887EUJ-1#PBF |
|---|---|
| Clock Sync | True |
| Control Features | Phase Control, Frequency Control, Enable |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 250 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 2 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 2 |
| Output Type | Transistor Driver |
| Package / Case | 40-WFQFN Exposed Pad |
| Serial Interfaces | PMBus, I2C |
| Supplier Device Package | 40-QFN (6x6) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 24 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Description
General part information
LTC3887LTC3887-1LTC3887-2 Series
The LTC3887/LTC3887-1/LTC3887-2 are dual, PolyPhase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpowerPlay®a software development tool with graphical user interface (GUI).Switching frequency, channel phasing, output voltage, and device address can be programmed using external configuration resistors. Additionally, parameters can be set via the digital interface or stored in EEPROM. Voltage, current, internal/external temperature and fault status can be read back through the bus interface.The LTC3887 has integrated gate drivers. The LTC3887-1 has three-state PWM pins to drive DrMOS power stages. The LTC3887-2 has gate drivers and no LDO and supports VINup to 34V. The LTC3887 is an enhanced version of the LTC3880 with greater output voltage range and more digital features.ApplicationsHigh Current Distributed Power SystemsTelecom, Datacom and Storage SystemsIntelligent Energy Efficient Power Regulation
Documents
Technical documentation and resources