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Product Detailed Parameters
- Description：IC REG MULTI CONFIG 0.1A 8SOIC
- Series：*
- Mfr：onsemi
- Package：Tube
- Function：-
- Output Configuration：-
- Topology：-
- Output Type：-
- Number of Outputs：-
- Voltage - Input (Min)：-
- Voltage - Input (Max)：-
- Voltage - Output (Min/Fixed)：-
- Voltage - Output (Max)：-
- Current - Output：-
- Frequency - Switching：-
- Synchronous Rectifier：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The CAT661EVA is a charge-pump voltage converter IC designed to invert positive input voltages into negative outputs. It operates within an input range of 2V to 5.5V and delivers up to 100mA output current. The device features switching frequencies between 25kHz and 135kHz, requiring only two external capacitors for operation. Packaged in an 8-SOIC format, it serves as a compact DC-DC switching regulator solution for applications requiring negative voltage generation from a single positive supply.
Feature Summary
- Inverts positive input voltage to generate negative output
- Requires minimal external components with only two capacitors
- Operates as a fixed-output charge pump switching regulator
Applications
- RS-232 transceiver bias voltage generation
- Op-amp dual supply requirements
- LCD bias voltage circuits
Procurement Notes
Verify the specific suffix (e.g., GT3, T3) against the required tape-and-reel or tube packaging configuration. Confirm the operating temperature range matches the application environment. Ensure the 8-SOIC package dimensions align with PCB layout constraints. Cross-reference the datasheet revision date to confirm parameter accuracy.
Selection Notes
Select this component when a simple, low-component-count solution is needed to generate negative rails from a positive source. Consider the 100mA current limit and switching frequency range relative to noise sensitivity. Evaluate the efficiency trade-offs inherent in charge-pump topologies versus inductive converters for low-power applications.
Part Context
This part belongs to onsemi's portfolio of intelligent power and sensing technologies, specifically within the PMIC category. It complements other voltage regulation solutions by providing a cost-effective method for level shifting and biasing in mixed-signal systems without requiring complex magnetic components.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and electrical specifications before considering alternative charge pump regulators from other manufacturers.
