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Product Detailed Parameters
- Description：IC REG LINEAR 3V 500MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：12 mA
- PSRR：81dB ~ 65dB (120Hz ~ 10kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
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Overview
The LF30CDT is a very low drop voltage regulator manufactured by STMicroelectronics, designed for battery-powered and noise-sensitive applications. It features a fixed positive output configuration with a maximum input voltage of 16 V and a quiescent current of 1 mA. The device operates within a minimum temperature range of -40 C. This component belongs to the PMIC linear regulator family and utilizes a JFET input structure to ensure low input bias current, making it suitable for high-impedance signal sources.
Feature Summary
- Very low dropout voltage regulation capability
- JFET input structure providing extremely low input bias current
- Integrated inhibit function for power management control
Applications
- Battery-powered equipment requiring efficient power management
- Noise-sensitive analog circuits needing stable voltage rails
- High-impedance sensor interfaces minimizing source loading
Procurement Notes
Verify component status carefully as the LF30CDT is listed as obsolete and no longer manufactured by STMicroelectronics. Confirm availability through authorized distributors or secondary markets if sourcing is required. Ensure datasheet revisions match specific production batches. Check for compatible replacement parts from the same manufacturer family before procurement decisions.
Selection Notes
Select this component only if legacy compatibility is mandatory due to its obsolete status. Evaluate alternatives with similar JFET input characteristics and inhibit functionality. Consider the fixed output nature and 16 V input limit during circuit design. Verify thermal performance requirements against the package constraints. Assess supply chain stability given the discontinuation status.
Part Context
This part belongs to STMicroelectronics' line of very low drop voltage regulators with inhibit. It is categorized under PMIC linear regulators. The LF30CDT series is designed for applications prioritizing low quiescent current and high power supply rejection. It serves as a specialized solution for maintaining voltage stability in sensitive electronic systems.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. As the LF30CDT is obsolete, consult STMicroelectronics for current equivalent recommendations or evaluate generic LDOs with matching JFET input and inhibit features.
