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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 1A SOT89-3
- 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)：2.5V
- 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-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The LB1117AATB250 is a positive fixed linear voltage regulator from Diodes Incorporated, providing a stable 2.5V output at up to 1A load current. It operates within an input voltage range of 3.2V to 15V and features a typical dropout voltage of 1.15V. The device offers high power supply rejection ratio (PSRR) of 75dB and functions reliably across a temperature range of -40°C to +125°C. This component is part of the AZ1117R series LDO regulators designed for efficient power management in single-output applications.
Feature Summary
- Provides a fixed positive output voltage suitable for standard logic levels
- Capable of delivering up to 1A continuous output current
- Operates with low dropout voltage for improved efficiency under varying input conditions
Applications
- General purpose power supply regulation
- Battery-powered equipment requiring stable voltage rails
- Embedded systems needing reliable 2.5V logic supply
Procurement Notes
Verify end-of-life status before design finalization as discontinuance notifications may apply. Confirm package compatibility and thermal requirements during integration. Check for authorized replacement components from the manufacturer if this specific variant is unavailable. Ensure all ordering suffixes match exact electrical specifications required for the target application circuit.
Selection Notes
Select this regulator when a fixed 2.5V rail is required with moderate current demands. Consider thermal dissipation capabilities based on the difference between input and output voltages. Verify that the input voltage remains within the specified minimum and maximum limits to ensure proper regulation and stability under all operating conditions.
Part Context
This component belongs to the AZ1117R series of low-dropout regulators manufactured by Diodes Incorporated. These devices are designed for general-purpose power management tasks where stable voltage regulation is critical. The series includes various fixed voltage options and adjustable variants to suit different system requirements.
Replacement Considerations
LB1117AATB250 has been discontinued. Recommended manufacturer substitutes include other AZ1117R series parts or equivalent LDOs with matching 2.5V output and 1A current capability.
