Manufacturer Part Number
LTC3858EUFD-1#PBF
Manufacturer
Analog Devices
Introduction
High performance dual, 2-phase synchronous step-down DC/DC controller
Product Features and Performance
Dual, 2-phase synchronous operation
Step-down voltage regulation
Positive output configuration
Buck topology
Supports up to two outputs
105kHz to 835kHz adjustable frequency range
Secondary frequency range 350kHz to 535kHz
Maximum duty cycle of 99.4%
Integrated synchronous rectifier for improved efficiency
Soft start reduces inrush current
Product Advantages
High efficiency with synchronous rectification
Wide supply voltage range suitable for various applications
High maximum duty cycle allows low dropout operation
Programmable frequency for flexibility and optimization
Support for frequency synchronization
Key Technical Parameters
Number of Outputs: 2
Output Phases: 2
Voltage - Supply (Vcc/Vdd): 4V to 38V
Frequency - Switching: 105kHz ~ 835kHz, 350kHz ~ 535kHz
Duty Cycle (Max): 99.4%
Operating Temperature Range: -40°C to 125°C
Quality and Safety Features
Wide operating temperature range for reliability in harsh conditions
Thermal protection features
Compatibility
Surface mount compatible with 28-WFQFN Exposed Pad package
Compatible with various input voltage ranges and multiple output configurations
Application Areas
Power supply design for networking, telecommunications, and industrial systems
Automotive electronics and computing applications
Product Lifecycle
Active status with no current indication of discontinuation
Availability of replacements or upgrades can vary; contact manufacturer for latest details
Several Key Reasons to Choose This Product
High integration facilitates compact and efficient design
Flexible power solution with dual output and phase options
Wide input voltage range caters to a variety of power sources
Adjustable switching frequency allows performance tuning and noise reduction in the system
High duty cycle operation enables use in low dropout scenarios
Built-in features such as soft start and frequency synchronization improve system stability and reduce design complexity