Manufacturer Part Number
LT1931AIS5#TRPBF
Manufacturer
Analog Devices
Introduction
The LT1931AIS5#TRPBF is a compact, high-frequency step-up/step-down DC/DC switching regulator.
Product Features and Performance
High switching frequency of 2.2MHz
Adjustable output voltage from -1.255V to -34V
Can be configured for negative output applications with a Cuk topology
Operates with a minimum input voltage of 2.45V and a maximum of 16V
Capable of driving a 1A switch current
Supports surface mount technology with a small footprint SOT-23-5 package
Product Advantages
Allows for small, low-profile inductors and capacitors due to high switching frequency
Enables the use of compact ceramic capacitors and inductors due to stable high-frequency operation
High efficiency with low quiescent current
Versatile configuration options for various application needs
Thermal shutdown and current limit for increased protection
Operates across a wide temperature range from -40°C to 85°C
Key Technical Parameters
Voltage - Input (Min): 2.45V
Voltage - Input (Max): 16V
Voltage - Output (Min/Fixed): -1.255V
Voltage - Output (Max): -34V
Current - Output: 1A (Switch)
Frequency - Switching: 2.2MHz
Operating Temperature: -40°C to 85°C
Quality and Safety Features
Built-in thermal shutdown
Current limit protection
High reliability and robustness against environmental conditions
Compatibility
Compatible with various input sources within the 2.45V - 16V range
Suitable for automated surface mount processes
Can be used with standard SOT-23-5 footprint layouts
Application Areas
Portable battery-powered devices
LED displays and backlighting
Negative voltage converters
Low voltage bias supplies
Sensor power supplies
Product Lifecycle
Product Status: Active
Not reported as nearing discontinuation
Future replacements or upgrade paths may be available depending on Analog Devices' product roadmap
Several Key Reasons to Choose This Product
Very high frequency (2.2MHz) minimizes the size of passive components
Flexible input voltage range suitable for various battery chemistries
Negative output configuration facilitates unique application needs
Suitable for use in space-constrained applications
Prolonged operational life in demanding temperature environments
Readily available in cut tape form for prototyping or small production runs
LT1931AIS5ADI (Analog Devices, Inc.)
LT1931AES5Linear Technology / Analog Devices