TPS74550PDBVT Texas Instruments In Stock
TPS74550PDBVT is a 500 mA, 5.5 V low-dropout linear regulator by Texas Instruments with enable control and a fast 10 µs power-good response in an SOT-23-5 package. Available from stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 500 mA output current capability for powering microcontrollers and FPGAs
- Input voltage range up to 5.5 V for direct compatibility with standard supply rails
- Low-dropout architecture minimizing voltage headroom requirements
- Enable pin for controlled sequencing and power management
- Fast power-good signaling with approximately 10 µs response time
- Compact SOT-23-5 package for space-constrained power supply designs
Applications
The TPS74550PDBVT is designed for point-of-load regulation in portable electronics, FPGAs, DSPs, and mixed-signal boards where a stable 500 mA output is needed from a 5 V or lower rail. Its enable pin and power-good output support sequenced power-up in multi-rail systems, reducing startup transients in sensitive analog circuitry. The compact SOT-23-5 footprint makes it ideal for embedded module power supplies, USB-powered devices, and wearable electronics requiring minimal board area.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum output current of the TPS74550PDBVT, and which processor types can it directly power?
The TPS74550PDBVT delivers up to 500 mA of output current, which is sufficient to directly supply low-power FPGAs, ARM Cortex-M microcontrollers, DSP cores, and associated peripheral circuitry from a 5.5 V maximum input rail.
How quickly does the TPS74550PDBVT assert its power-good signal after output voltage is within regulation?
The TPS74550PDBVT provides a fast power-good response of approximately 10 µs after the output reaches its regulated voltage, enabling precise sequencing of multi-rail power supplies and minimizing startup delays in FPGA and processor initialization routines.
Why might a designer choose the TPS74550PDBVT's LDO topology over a switching regulator for a 500 mA point-of-load application?
An LDO like the TPS74550PDBVT eliminates switching noise and EMI, making it preferable over a switching regulator when supplying noise-sensitive analog circuits or RF sections with 500 mA, provided the input-to-output differential stays within a few hundred millivolts to keep thermal dissipation manageable.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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