Manufacturer Part Number
LTC3890IUH#TRPBF
Manufacturer
Analog Devices
Introduction
High-performance dual-channel step-down DC/DC switching controller
Product Features and Performance
Dual channel operation
High-efficiency synchronous rectification
Variable switching frequency from 105kHz to 835kHz
Adjustable duty cycle up to 99%
Phase lockable frequency (350kHz to 535kHz)
Compatible with a wide input voltage range from 4V to 60V
On-chip current limit, enable, frequency control, phase control, power good, soft start, and tracking functions
Thermal performance enhanced with 32-WFQFN Exposed Pad
Product Advantages
Reduced power loss with synchronous rectification
Optimized for high voltage input applications
Flexible design with adjustable switching frequency
Stable operation with high duty cycle and phase control
Integrated features minimize external component count
Good thermal performance due to exposed pad package
Key Technical Parameters
Number of outputs: 2
Output Phases: 2
Voltage - Supply (Vcc/Vdd): 4V ~ 60V
Frequency - Switching: 105kHz ~ 835kHz; 350kHz ~ 535kHz
Duty Cycle (Max): 99%
Operating Temperature: -40°C ~ 125°C (TJ)
Quality and Safety Features
Protection against overcurrent
Built-in soft-start functionality
Robust TJ operating temperature range
Compatibility
Surface Mount technology for PCB integration
32-QFN (5x5) package compatible with standard soldering processes
Application Areas
Power supplies
Distributed Power Systems
Telecommunications and Networking equipment
Industrial and Automotive applications
Product Lifecycle
Active status with no immediate risk of discontinuation
Long term availability and support are typically expected from Analog Devices products
Several Key Reasons to Choose This Product
Dual-output channel increases system efficiency
Wide input voltage range suitable for diverse power architecture designs
Highly adjustable switching frequency for design flexibility
Integrated control features reduce need for additional external components
Robust operation in harsh temperature environments
Advanced thermal design for better reliability
Continued manufacturer support and product longevity
LTC3891EFELinear Technology
LTC3891EFE#PBFAnalog Devices Inc.IC REG CTRLR BUCK 20TSSOP