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Product Detailed Parameters
- Description：IC REG LINEAR 5V 800MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：15V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.3V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- 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 LD1117DT50CTR is a positive fixed linear low-dropout voltage regulator manufactured by STMicroelectronics. It provides a fixed 5V output with a maximum current of 800mA. The device supports a maximum input voltage of 15V and features a typical dropout voltage of 1.3V at full load. It incorporates internal overcurrent and thermal overload protection mechanisms. The component operates within an extended temperature range of -40°C to 125°C and utilizes a DPAK surface-mount package for efficient thermal dissipation.
Feature Summary
- Integrated overcurrent and thermal overload protection circuits ensure device safety under fault conditions.
- Low dropout voltage characteristic allows operation with minimal input-to-output voltage difference.
- High power supply rejection ratio effectively attenuates ripple from the input source.
Applications
- Battery-powered systems requiring stable voltage regulation
- General-purpose power supplies in consumer electronics
- Post-regulation stages for switching power converters
Procurement Notes
Verify the specific suffix 'CTR' against the manufacturer's official datasheet to confirm the exact tape-and-reel packaging configuration and moisture sensitivity level. Ensure the ordering part number matches the required operating temperature range and package variant, as minor suffix changes may indicate different packaging or regional specifications.
Selection Notes
Select this component when a fixed 5V rail is required with up to 800mA capacity in a compact surface-mount form factor. Consider the thermal performance of the DPAK package relative to the expected ambient temperature and load current to ensure junction temperatures remain within safe limits without additional heatsinking.
Part Context
This part belongs to the LD1117 series of low-dropout regulators designed for high-efficiency applications using NPN pass transistors. The series offers various fixed output voltages and adjustable versions, catering to diverse power management needs in portable and industrial equipment while maintaining tight output voltage tolerances.
Replacement Considerations
Cross-reference with other LD1117 variants such as LD1117DT33CTR for different voltage requirements. Verify pin compatibility and thermal characteristics before substituting with equivalent LDOs from other manufacturers.
