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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1A SOT-223-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.4V @ 800mA
- Current - Output：1A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：-
- Control Features：Current Limit
- Protection Features：Over Current, Over Temperature, Transient Voltage
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-261-4, TO-261AA
- Supplier Device Package：SOT-223-3
- Grade：-
- Qualification：-
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Overview
The LB1117AADB330 is a positive fixed linear voltage regulator from Diodes Incorporated, providing a stable 3.3V output at up to 1A load current. Housed in an SOT-223-3 surface-mount package, it operates within an input voltage range of 3.2V to 15V. The device features a typical dropout voltage of 1.15V at full load and offers high power supply rejection ratio (PSRR) for clean power delivery. It supports operation across an extended temperature range from -40°C to +125°C, ensuring reliability in demanding environments.
Feature Summary
- Provides a fixed 3.3V regulated output with 1A continuous current capability
- Operates with low dropout voltage for efficient power management
- Features high power supply rejection to minimize noise on the output line
- Designed for robust performance across industrial temperature ranges
Applications
- Portable battery-powered equipment requiring stable 3.3V logic levels
- Embedded systems and microcontroller power supplies
- General-purpose linear regulation in consumer electronics
Procurement Notes
Verify the exact manufacturer part number against official Diodes Incorporated documentation to ensure compatibility. Confirm that the SOT-223-3 package matches your PCB footprint requirements. Check for RoHS compliance status if required by your manufacturing standards. Ensure thermal management considerations are addressed for the specific application environment.
Selection Notes
Select this component when a fixed 3.3V output is required with moderate current demands up to 1A. It is suitable for applications where low noise and good line regulation are prioritized over switching efficiency. Consider the thermal dissipation capabilities of the SOT-223-3 package relative to the expected power loss in your design.
Part Context
This part belongs to the LB1117 series of low-dropout regulators from Diodes Incorporated. It is functionally similar to other industry-standard 1A LDOs but offers specific performance characteristics tailored for cost-sensitive and space-constrained designs. The series provides various fixed voltage options to simplify power rail generation in multi-voltage systems.
Replacement Considerations
Direct substitutes may include parts from other manufacturers offering identical pinouts and electrical specifications. Verify equivalent dropout voltage, current rating, and package dimensions before substitution. Cross-reference with Diodes Incorporated's official replacement guide for validated alternatives.
