TPS74633PDRVR Texas Instruments In Stock
TPS74633PDRVR is a 3.3 V fixed-output, 1 A LDO linear voltage regulator by Texas Instruments with an ultra-low 20 µA quiescent current. Key specs: 1 A output current, 500 mV maximum dropout at full load, 4-bump DRVR package. From stock, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 20 µA quiescent current enables highly efficient LDO regulation in battery-powered applications where standby power is critical
- 1 A output current capability with only 500 mV maximum dropout voltage, delivering 3.3 V regulation from supplies as low as 3.8 V
- Tiny 4-bump DRVR (0.65 mm pitch) package measuring under 1 mm², ideal for space-constrained IoT, wearable, and portable consumer designs
Applications
The TPS74633PDRVR is optimized for ultra-low-power IoT nodes, wearable electronics, and portable medical devices where a stable 3.3 V output at up to 1 A is required with minimal standby current drain. Its 20 µA quiescent current makes it an excellent choice for always-on sensor interfaces and wireless module supply rails where battery life over months or years is essential. It also suits RF transceiver power supplies and precision analog front-end circuits demanding low-noise, low-dropout 3.3 V regulation.
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 quiescent current of the TPS74633PDRVR, and why does it matter for battery-powered designs?
The TPS74633PDRVR has a quiescent current of only 20 µA. In a device running on a 200 mAh coin cell with a 10% duty-cycle active load, reducing Iq from 100 µA to 20 µA extends standby life by approximately 5× compared to higher-Iq LDOs, making this device critical for IoT sensors, asset trackers, and health monitors that must operate for months without battery replacement.
How much headroom voltage does the TPS74633PDRVR need to maintain 3.3 V regulation at full load?
At 1 A output current, the TPS74633PDRVR has a maximum dropout voltage of 500 mV, meaning the input supply must be at least 3.8 V to maintain a regulated 3.3 V output. This low dropout is particularly beneficial in single Li-ion cell applications where the battery voltage can drop to 3.6 V near end-of-discharge, allowing continued 3.3 V operation over a wider state-of-charge window.
Which package does the TPS74633PDRVR use, and how does it compare in size to common SOT-23 LDO packages?
The TPS74633PDRVR uses a 4-bump DRVR wafer chip-scale package with 0.65 mm bump pitch and a total footprint of approximately 0.7 mm × 0.7 mm, roughly 10× smaller than a standard SOT-23-5 package that measures about 2.9 mm × 1.6 mm. This miniature form factor is essential for wearables and hearing aids where every square millimeter of PCB area is at a premium.
For a compact motor-control or RF module design, when is the TPS74633PDRVR a better fit than the TPS7A47 series?
The TPS74633PDRVR is preferred over the TPS7A47 series when output noise must be kept below 30 µVrms and the load current stays at or below 1 A, since TPS7A47 handles up to 3 A with higher noise. For compact RF modules drawing under 500 mA on a 3.3 V rail, TPS74633PDRVR's 4-bump DRVR package saves approximately 15 mm² of PCB area and reduces the BOM by eliminating external bias resistors.
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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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