PTLV809EA26DBZR Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
Texas Instruments PTLV809EA26DBZR is a low-power 3-pin voltage supervisor with active-low push-pull reset output, monitoring a fixed 2.6 V threshold to protect microcontrollers from brown-out conditions. It requires zero external components and delivers a guaranteed reset pulse in a tiny SOT-23-3 package. Available from stock worldwide at competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- PTLV809EA26DBZR 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 PTLV809EA26DBZR?
- Fixed 2.6 V reset threshold factory-trimmed to ±1.5% accuracy, eliminating the need for external precision resistors
- Active-low push-pull reset output drives MCU reset pins directly without an external pull-up resistor
- Ultra-low quiescent current (typically under 15 µA) minimizing power consumption in battery-operated systems
- Zero external components required—just power and ground connections for the smallest possible supervisor footprint
- 3-pin SOT-23 package (1.6 mm × 2.9 mm) occupying minimal PCB area for space-constrained IoT and wearable designs
What is PTLV809EA26DBZR used for?
The PTLV809EA26DBZR is used to supervise 2.6 V power rails in microcontroller-based systems, ensuring the MCU is held in reset during power-up, power-down, and brown-out conditions that could corrupt firmware or SRAM state. It is well suited for IoT sensor nodes, Bluetooth SoC boards, and wearable devices running from coin-cell or LiPo batteries where the operating voltage can droop near the threshold during high-current bursts. It is also used in industrial PLCs and medical portable devices as a simple, no-tune supervisory circuit that eliminates discrete RC reset circuits.
What are the specifications of PTLV809EA26DBZR?
| Date Of Intro | 2019-06-14 |
| YTEOL | 0 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 1.7V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.64V |
| 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 PTLV809EA26DBZR datasheet?
PTLV809EA26DBZR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PTLV809EA26DBZR?
Compatible alternatives and drop-in replacements for PTLV809EA26DBZR:
Frequently Asked Questions
What reset threshold voltage does PTLV809EA26DBZR monitor, and how accurate is it?
The PTLV809EA26DBZR monitors a fixed 2.6 V threshold with a factory-trimmed accuracy of ±1.5%, which corresponds to a trip-point window of approximately 2.561 V to 2.639 V. This level of precision ensures consistent brown-out detection across the full -40°C to +125°C operating temperature range without requiring the designer to add or adjust any external resistors or trimming potentiometers.
Does PTLV809EA26DBZR need any external components, and how does that simplify PCB layout?
The PTLV809EA26DBZR is a zero-external-component supervisor—only the VDD and GND pins plus the RESET output are needed, with no decoupling or biasing resistors required beyond the standard 100 nF bypass capacitor on the supply rail. This reduces the reset circuit from 4–6 passive components to a single 3-pin SOT-23 device, saving approximately 40–80 mm² of PCB area and eliminating tolerance stack-up errors from discrete RC networks.
What type of reset output does PTLV809EA26DBZR provide, and can it drive multiple MCU reset pins?
The PTLV809EA26DBZR provides an active-low push-pull reset output, which can both actively pull the reset line to GND (asserting reset) and drive it to VDD (releasing reset) without an external pull-up resistor. The push-pull driver can typically source and sink up to 4 mA, sufficient to drive 2–3 CMOS MCU reset inputs in parallel on the same net without signal integrity degradation.
How does PTLV809EA26DBZR perform in battery-powered applications with a 3 V coin cell?
The PTLV809EA26DBZR draws typically under 15 µA of quiescent current, which at a CR2032 coin cell capacity of 220 mAh represents less than 0.007% of battery capacity per hour—extending supervisory monitoring to over a year without significantly reducing battery life. Its 2.6 V threshold is slightly below the 3 V nominal cell voltage, so it correctly asserts reset only when the cell is genuinely depleted below the MCU's minimum operating voltage.
For a 2.6 V rail on an IoT SoC board, when would PTLV809EA26DBZR be preferred over an adjustable-threshold supervisor?
PTLV809EA26DBZR is preferred when the target supply rail is always 2.6 V and the design team wants to lock the BOM to a single SKU rather than stock multiple resistor values for different threshold-setting versions. The fixed ±1.5% trimming also avoids the 5–10% combined tolerance from two external resistors in an adjustable supervisor divider, resulting in tighter production control for devices that must meet IEC 61000-4-11 voltage-dip immunity requirements.
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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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