Analog Devices LTC3855IUJ DC DC Switching Controllers
Buck Regulator Positive Output Step-Down DC-DC Controller IC 40-QFN (6x6)
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LTC3855IUJ
Detailed Description
IC POWER MANAGEMENT
Package
40-WFQFN Exposed Pad
Key Features
Package / Case: 40-WFQFN Exposed Pad; Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
LTC3855IUJ Datasheet
Quick Jump:
Technical Specifications
Analog Devices LTC3855IUJ DC DC Switching Controllers technical specifications.
General
Series
PolyPhase®
Package / Case
40-WFQFN Exposed Pad
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 125°C (TJ)
Supply Voltage
4.5V ~ 38V
Lifecycle Status
Obsolete
Output Type
Transistor Driver
Switching Frequency
250kHz ~ 770kHz
Number of Outputs
2
Topology
Buck
Alternate Parts Comparison (LTC3855IUJ vs LTC3880IUJ#PBF vs LTC3880IUJ#TRPBF vs LTC3887EUJ#PBF)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 40-WFQFN Exposed Pad | 40-WFQFN Exposed Pad | 40-WFQFN Exposed Pad | 40-WFQFN Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Supply Voltage | 4.5V ~ 38V | 4.5V ~ 24V | 4.5V ~ 24V | 4.5V ~ 24V |
| Clock Sync | No | Yes | Yes | Yes |
| Control Features | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking | Enable, Frequency Control | Enable, Frequency Control | Enable, Frequency Control, Phase Control |
| Function | Step-Down | Step-Down | Step-Down | Step-Down |
| Number of Outputs | 2 | 2 | 2 | 2 |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Phases | 2 | 2 | 2 | 2 |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Synchronous Rectifier | Yes | Yes | Yes | Yes |
| Action |
More Parts in DC DC Switching Controllers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
LTC3887IUJ#TRPBFAnalog DevicesBuck Regulator Positive Output Step-Down I2C, PMBus DC-DC Controller IC 40-QFN (6x6)