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Product Detailed Parameters
- Description：IC REG CUK ADJ 750MA 8SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Negative
- Topology：Cuk
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：1V
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：-1.24V
- Voltage - Output (Max)：-24V
- Current - Output：750mA (Switch)
- Frequency - Switching：600kHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SO
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Overview
The LT1614CS8#PBF is a Cuk switching regulator IC manufactured by Analog Devices Inc. It operates with a fixed switching frequency of 600kHz and supports an input voltage range from 1V to 6V. The device provides a single adjustable negative output, ranging from -1.24V to -24V, with a maximum switch current capability of 750mA. It is housed in an 8-SOIC package (3.90mm wide) and is rated for operation within a temperature range of -40°C to 85°C.
Feature Summary
- Implements Cuk topology to generate negative voltages from positive inputs
- Integrates a 600kHz fixed-frequency oscillator for consistent regulation
- Supports wide input voltage ranges starting as low as 1V
Applications
- Negative power supply generation for operational amplifier circuits
- Interface power supplies for RS-232 communication systems
- Biasing requirements for analog signal processing components
Procurement Notes
Verify the specific suffix designation against official Analog Devices documentation to confirm pinout compatibility and thermal characteristics. Ensure that the selected component meets the required environmental specifications for the intended operating temperature range. Cross-reference the datasheet revision history to validate parameter consistency before finalizing procurement decisions.
Selection Notes
Select this component when a compact solution for generating negative voltages from low-voltage positive sources is required. The Cuk topology offers continuous input and output currents, which can simplify filter design compared to other topologies. Consider the 750mA switch current limit and the 600kHz frequency when designing external passive components for optimal efficiency and ripple performance.
Part Context
This part belongs to the LT1614 family of switching regulators designed for efficient DC-DC conversion. The CS8 variant specifically denotes the commercial temperature grade version packaged in a standard 8-pin SOIC footprint. It serves as a dedicated solution for applications requiring isolated or non-isolated negative rail generation from single-ended positive supplies.
Replacement Considerations
LT1614IS8#PBF: Identical electrical specifications with an extended industrial temperature range (-40°C to 125°C). Verify thermal management requirements if ambient temperatures exceed 85°C.
