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Product Detailed Parameters
- Description：IC REG CUK ADJ 1A TSOT23-5
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up/Step-Down
- Output Configuration：Negative
- Topology：Cuk
- Output Type：Adjustable
- Number of Outputs：1
- 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：1.2MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：TSOT-23-5
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Overview
The LT1931IS5#TRMPBF is a Cuk switching regulator IC manufactured by Analog Devices Inc. It operates within an input voltage range of 2.45V to 16V and provides a single adjustable negative output ranging from -1.255V to -34V. The device supports a maximum switch current of 1A and functions at a fixed switching frequency of 1.2MHz. It is housed in a TSOT-23-5 surface-mount package and is rated for operation between -40°C and +85°C.
Feature Summary
- Implements Cuk topology to generate negative voltages from positive inputs
- Supports wide input voltage ranges up to 16V
- Features adjustable negative output capability
Applications
- Negative rail generation for mixed-signal circuits
- Power supply systems requiring isolated negative outputs
- Telecommunications equipment power management
Procurement Notes
Verify the specific suffix TRMPBF against official Analog Devices documentation to confirm tape-and-reel packaging and lead-free status. Ensure the requested part matches the exact electrical specifications required for your design, as variations exist within the LT1931 family. Cross-reference the manufacturer's latest datasheet for any updates on recommended operating conditions or pinout configurations before finalizing procurement.
Selection Notes
Select this component when a compact solution for generating negative voltage rails is required. The Cuk topology allows for continuous input and output currents, which may reduce filtering requirements compared to other topologies. Consider the 1A switch current limit and the 1.2MHz frequency when designing passive components. Verify that the TSOT-23-5 package size fits the available PCB space constraints.
Part Context
This part belongs to the LT1931 series of DC-DC converters from Analog Devices. The series includes variants with different packages and temperature ratings. The IS5 designation indicates the industrial temperature range and the TSOT-23-5 package type. The #TRMPBF suffix denotes the specific reel packaging and compliance with RoHS standards.
Replacement Considerations
LT1931IS5#TRPBF serves as a direct alternative with identical electrical characteristics but potentially different packaging quantities or reel specifications. Verify compatibility with existing footprints and reflow profiles before substitution.
