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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1A SOT89-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.4V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：70dB (120Hz)
- 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-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
Download product information
Overview
The LA1117AATB330 is a linear voltage regulator IC manufactured by Diodes Incorporated. It provides a fixed positive output voltage of 3.3V with a maximum output current of 1A. The device utilizes a SOT-89-3 package (TO-243AA). Key electrical specifications include a maximum dropout voltage of 1.4V at 1A load and an input voltage range supported up to 15V. The component is RoHS3 compliant.
Feature Summary
- Provides stable fixed 3.3V output for power management applications
- Capable of delivering up to 1A continuous output current
- Designed with low dropout characteristics for efficient regulation
Applications
- Battery-powered systems requiring regulated 3.3V supply
- General purpose power management in consumer electronics
- Embedded systems utilizing LDO regulators
Procurement Notes
Verify the specific suffix and package configuration against official Diodes Incorporated datasheets before procurement. Confirm end-of-life status or availability through authorized distributors, as market supply may vary. Ensure compatibility with existing PCB footprints for SOT-89-3 packages during integration planning.
Selection Notes
Select this component when a fixed 3.3V output is required with 1A current capability in a compact surface-mount package. Consider the thermal performance associated with the SOT-89-3 case under expected load conditions. Verify that the input voltage remains within the specified operational limits to ensure proper regulation and stability.
Part Context
This part belongs to the LA1117 series of low-dropout linear regulators from Diodes Incorporated. These devices are designed for applications requiring simple, cost-effective voltage regulation. The series typically offers fixed output voltages and supports moderate current loads, making them suitable for various standard power rail requirements in electronic circuits.
Replacement Considerations
Check for direct pin-compatible alternatives within the same manufacturer's portfolio. Verify that any substitute maintains identical output voltage, current rating, and package dimensions. Cross-reference technical parameters such as dropout voltage and operating temperature range to ensure functional equivalence.
