PS7A0508PDBZR Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
PS7A0508PDBZR is an ultra-low quiescent current LDO regulator from Texas Instruments delivering 200 mA output from a 1.4 V to 5.5 V input with only 1 µA IQ and 0.6 V typical dropout voltage. The fixed-output device is housed in a 3-pin SOT-23 package, ideal for always-on battery-powered IoT and wearable applications.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- PS7A0508PDBZR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PS7A0508PDBZR?
- Industry-leading 1 µA quiescent current extends battery life in always-on IoT and wearable designs
- 200 mA output current with only 0.6 V typical dropout from a 1.4 V to 5.5 V input range
- Tiny 3-pin SOT-23 package with 0.018% line regulation for stable, space-efficient power supply rails
What is PS7A0508PDBZR used for?
The PS7A0508PDBZR is optimized for battery-powered IoT sensors, wearables, and medical patches where 1 µA quiescent current significantly extends coin-cell or thin-film battery runtime. Energy-harvesting systems and wireless sensor nodes benefit from the 1.4 V minimum input voltage and 200 mA output capability, allowing operation close to battery depletion. Smart meters and always-on data loggers use its low dropout of 0.6 V to maintain stable regulated output even during battery end-of-life conditions.
What are the specifications of PS7A0508PDBZR?
| Date Of Intro | 2019-05-22 |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 1.004V |
| Dropout Voltage1-Nom | 0.6V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 1.4V |
| JESD-30 Code | R-PDSO-G3 |
| Line Regulation-Max | 0.018% |
| Load Regulation-Max | 0.062% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.2A |
| Output Voltage1-Max | 0.83V |
| Output Voltage1-Min | 0.77V |
| Output Voltage1-Nom | 0.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 3% |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the PS7A0508PDBZR datasheet?
PS7A0508PDBZR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PS7A0508PDBZR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 1 µA quiescent current of PS7A0508PDBZR translate to battery life improvement in a coin-cell IoT sensor?
With only 1 µA IQ, the PS7A0508PDBZR draws negligible standby current, allowing a standard 225 mAh CR2032 coin cell to sustain the regulator itself for over 25 years in standby. Even with periodic 200 mA active load pulses for wireless transmission, the ultra-low IQ ensures total average current remains dominated by the load, not regulator overhead, maximizing field-deployed sensor lifetime.
What is the minimum input voltage required by PS7A0508PDBZR, and how does the 0.6 V dropout voltage affect end-of-life battery operation?
The PS7A0508PDBZR requires a minimum 1.4 V input and has a typical dropout voltage of 0.6 V. This means a regulated output of 0.8 V can still be maintained from a nearly depleted AA alkaline cell at 1.4 V, enabling designs to extract maximum energy from the battery before the regulator drops out of regulation and the system shuts down gracefully.
In an energy-harvesting application using a supercapacitor reservoir, what advantage does PS7A0508PDBZR offer over a standard LDO with 50 µA IQ?
At 1 µA IQ versus a typical 50 µA LDO, the PS7A0508PDBZR reduces self-discharge of a 1 F supercapacitor reservoir by 50× in sleep mode, preserving charge between harvesting events. With a 1.4 V minimum input and 200 mA output burst capability, it can power a Bluetooth Low Energy radio transmit burst of approximately 10 ms without stalling the harvesting circuitry.
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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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