Overview
The TPS3839A09DBZR is a supervisory circuit designed by Texas Instruments, specifically tailored for low-power and portable applications. This ultralow power supply voltage supervisor is part of the TPS383x family and is known for its high precision and low current consumption. The device monitors a single voltage and initiates an active-low reset signal when the supply voltage drops below the factory-trimmed reset threshold voltage. This component is particularly useful in systems that require reliable voltage monitoring and reset functionality with minimal power draw.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TPS3839A09DBZR |
| Package | SOT-23 (DBZ), 3 pins |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage Range | 0.9 V to 6.5 V |
| Reset Threshold Voltage | Factory-trimmed |
| Reset Output | Active-low, push-pull |
| Reset Duration | 200 ms (typical) after VDD rises above threshold |
| Supply Current | 150 nA (typical) |
| RoHS Compliance | Yes |
Key Features
- Ultralow Supply Current: 150 nA (typical), making it ideal for low-power and portable applications.
- Precision Reset Threshold: Factory-trimmed reset threshold voltages ensure reliable operation.
- Active-Low Reset Output: Push-pull output that remains low for 200 ms after the supply voltage rises above the threshold.
- Wide Operating Supply Voltage Range: 0.9 V to 6.5 V.
- Temperature Range: -40°C to 85°C.
- Compact Packaging: Available in 3-pin SOT23 (DBZ) package.
Applications
The TPS3839A09DBZR is suitable for a variety of applications where low power consumption and reliable voltage monitoring are critical. These include:
- Portable electronics such as smartphones, tablets, and wearables.
- Low-power microcontrollers and embedded systems.
- Battery-powered devices where power efficiency is paramount.
- Industrial control systems requiring precise voltage supervision.
- Automotive electronics where robust and reliable operation is necessary.
Q & A
- What is the typical supply current of the TPS3839A09DBZR? The typical supply current is 150 nA.
- What is the operating temperature range of the TPS3839A09DBZR? The operating temperature range is -40°C to 85°C.
- What type of reset output does the TPS3839A09DBZR have? The reset output is active-low and push-pull.
- How long does the reset output remain low after the supply voltage rises above the threshold? The reset output remains low for 200 ms (typical) after the supply voltage rises above the threshold.
- Is the TPS3839A09DBZR RoHS compliant? Yes, the TPS3839A09DBZR is RoHS compliant.
- What is the package type of the TPS3839A09DBZR? The package type is SOT-23 (DBZ) with 3 pins.
- What is the supply voltage range of the TPS3839A09DBZR? The supply voltage range is 0.9 V to 6.5 V.
- Does the TPS3839A09DBZR have a manual reset input? No, the TPS3839A09DBZR does not have a manual reset input; this feature is available in the TPS3831 device.
- What are the typical applications of the TPS3839A09DBZR? Typical applications include portable electronics, low-power microcontrollers, battery-powered devices, industrial control systems, and automotive electronics.
- Where can I find the datasheet for the TPS3839A09DBZR? You can find the datasheet on the official Texas Instruments website or through distributors like LCSC and AERI.
