Overview
The TPS3839G25DBZR is an ultralow power, supply voltage supervisor integrated circuit produced by Texas Instruments. This device is part of the TPS383x family, designed to monitor a single voltage supply and initiate a reset signal when the supply voltage drops below a predefined threshold. The TPS3839G25DBZR is particularly suited for low-power and portable applications due to its extremely low current consumption of 150 nA (typical). It is available in a 3-pin SOT-23 (DBZ) package, making it compact and efficient for various electronic designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBZ) | - |
| Pins | 3 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 0.9 to 6.5 | V |
| Threshold Voltage (VIT-) | 2.325 | V |
| Supply Current (IDD) | 150 nA (Typical) | nA |
| Reset Output Type | Push-Pull | - |
| Reset Delay Time | 200 ms (Typical) | ms |
| ESD Rating (Human Body Model) | - | - |
Key Features
- Ultralow Supply Current: 150 nA (Typical), making it ideal for low-power and portable applications.
- Operating Supply Voltage: 0.9 V to 6.5 V, ensuring compatibility with a wide range of power supplies.
- Valid Reset for VDD > 0.6 V: Ensures the correct output logic state even at low supply voltages.
- Push-Pull RESET Output: Capable of directly driving input pins with a push-pull output drive.
- Factory-Trimmed Reset Threshold Voltages: Precise threshold voltages for reliable operation.
- Transient Rejection: Built-in rejection of fast transients on the VDD pin to prevent false resets.
Applications
The TPS3839G25DBZR is suitable for a variety of applications, including:
- Low-Power Devices: Batteries, energy harvesting systems, and other low-power electronics.
- Portable Electronics: Handheld devices, wearables, and mobile equipment.
- Metering and Monitoring Systems: Energy meters, industrial control systems, and monitoring devices.
- Automotive Systems: In-vehicle electronics that require reliable voltage monitoring.
Q & A
- What is the typical supply current of the TPS3839G25DBZR?
The typical supply current is 150 nA.
- What is the operating temperature range of the TPS3839G25DBZR?
The operating temperature range is -40°C to 85°C.
- What type of package is the TPS3839G25DBZR available in?
The device is available in a 3-pin SOT-23 (DBZ) package.
- What is the threshold voltage for the TPS3839G25DBZR?
The threshold voltage is 2.325 V.
- Does the TPS3839G25DBZR have a manual reset input?
No, the TPS3839G25DBZR does not have a manual reset input; this feature is available in the TPS3831 device.
- How long does the reset output remain low after the supply voltage rises above the threshold?
The reset output remains low for approximately 200 ms after the supply voltage rises above the threshold.
- What type of reset output does the TPS3839G25DBZR have?
The device has a push-pull reset output.
- Is the TPS3839G25DBZR designed to handle fast transients on the VDD pin?
- What is the recommended bypass capacitor value for the VDD pin?
A small 0.1-µF bypass capacitor is recommended near the VDD pin.
- What are some typical applications for the TPS3839G25DBZR?
Typical applications include low-power devices, portable electronics, metering and monitoring systems, and automotive systems.
