Manufacturer Part Number
LTC3891EFE#PBF
Manufacturer
Analog Devices
Introduction
The LTC3891EFE#PBF is a durable high voltage, step-down DC DC switching controller designed for efficient power management.
Product Features and Performance
Step-Down (Buck) regulator topology
Single Output with Transistor Driver
Flexible operating voltage range from 4V to 60V
Adjustable switching frequency from 105kHz to 835kHz, with a secondary range from 350kHz to 535kHz
Supports High duty cycle up to 99% for low dropout operation
Incorporates Synchronous Rectification for improved efficiency
Lacks Clock Synchronization feature
Control features include Current Limit, Enable, Frequency Control, Power Good, Soft Start, and Tracking
Thermal performance suitable for operating temperatures ranging from -40°C to 125°C
Product Advantages
High efficiency step-down voltage regulation for diverse applications.
Broad input voltage range suitable for various power sources.
Enables design flexibility through adjustable switching frequencies.
Synchronous Rectification enhances efficiency at high power levels.
Key Technical Parameters
Number of Outputs: 1
Output Phases: 1
Voltage - Supply (Vcc/Vdd): 4V ~ 60V
Frequency - Switching: 105kHz ~ 835kHz, 350kHz ~ 535kHz
Duty Cycle (Max): 99%
Control Features: Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
Operating Temperature: -40°C ~ 125°C
Quality and Safety Features
Built-in protection features against overcurrent conditions.
Ability to handle wide temperature variations for reliable operation.
Compatibility
Surface Mount device with a standard 20-TSSOP-EP package for easy integration.
Positive Output Configuration compatible with many circuit designs.
Application Areas
Can be used across a broad range of electronic devices including computing, automotive, telecommunications, and industrial systems.
Product Lifecycle
Active product status indicates ongoing production and availability.
No indication that it is nearing discontinuation, ensuring supply for future designs.
Several Key Reasons to Choose This Product
Supports a versatile input voltage scope, accommodating a range of power sources.
Facilitates design with its adjustable switching frequency range to meet specific application needs.
Highly efficient due to 99% maximum duty cycle and Synchronous Rectification.
Designed for high-temperature environments and diverse weather conditions.
Includes a range of control features to fine-tune performance and ensure stability.
LTC3890IGN-3#PBFAnalog Devices Inc.IC REG CTRLR BUCK/SEPIC 28SSOP