Overview
The TPS3838K33DBVR is a part of the TPS3838 family of supervisory circuits produced by Texas Instruments. These devices are designed to provide circuit initialization and timing supervision, primarily for digital signal processors (DSP) and processor-based systems. The TPS3838K33DBVR is an active-low, open-drain, nano-power supervisor with manual reset, making it ideal for applications requiring low power consumption and precise voltage monitoring.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23 (DBV), 5 pins |
| Operating Temperature Range | -40°C to 85°C |
| Supply Current | 220 nA (typical) |
| Precision Supply Voltage Supervision Range | 1.8 V, 2.5 V, 3.0 V, and 3.3 V |
| Power-on Reset Generator Delay Time | 10 ms or 200 ms (selectable) |
| RESET Output Type | Active-low, open-drain |
| Manual Reset | Available |
| RoHS Compliance | Yes |
Key Features
- Low supply current of 220 nA (typical), making it suitable for battery-powered devices.
- Precision supply voltage supervision for 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- Power-on reset generator with selectable delay times of 10 ms or 200 ms.
- Active-low, open-drain RESET output.
- Manual reset capability.
- Available in SOT23-5 and 2-mm × 2-mm SON-6 packages.
- Operates over a temperature range of -40°C to 85°C.
Applications
- Digital signal processors (DSP) and processor-based systems.
- Battery-powered devices requiring low power consumption.
- Systems needing precise voltage monitoring and reset capabilities.
- Industrial and automotive applications where temperature range is critical.
Q & A
- What is the typical supply current of the TPS3838K33DBVR?
The typical supply current is 220 nA.
- What are the available supply voltage supervision ranges for the TPS3838K33DBVR?
The device supports supervision ranges of 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- What are the selectable delay times for the power-on reset generator?
The delay times are 10 ms or 200 ms.
- What type of RESET output does the TPS3838K33DBVR have?
The device has an active-low, open-drain RESET output.
- Is manual reset available on the TPS3838K33DBVR?
Yes, manual reset is available.
- In what packages is the TPS3838K33DBVR available?
The device is available in SOT23-5 and 2-mm × 2-mm SON-6 packages.
- What is the operating temperature range of the TPS3838K33DBVR?
The operating temperature range is -40°C to 85°C.
- Is the TPS3838K33DBVR RoHS compliant?
Yes, the device is RoHS compliant.
- What are some typical applications for the TPS3838K33DBVR?
Typical applications include DSP and processor-based systems, battery-powered devices, and industrial and automotive systems.
- How does the power-on reset generator work?
The power-on reset generator asserts RESET when the supply voltage VDD becomes higher than 1.1 V and keeps it active until VDD rises above the threshold voltage VIT. The delay time starts after VDD rises above VIT and can be set to 10 ms or 200 ms based on the CT connection.
