Overview
The TPS3838E18DBVRG4 is a nano power voltage supervisor from Texas Instruments, designed to provide circuit initialization and timing supervision for digital signal processors (DSPs) and processor-based systems. This device is part of the TPS383x family, which includes the TPS3836, TPS3837, and TPS3838 models. The TPS3838E18DBVRG4 is specifically configured for a monitored voltage of 1.8 V and features an ultra-low power consumption of 220 nA (typical), making it ideal for low-power applications.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Input Supply Voltage Range | 1.6 V to 6 V | V |
| Monitored Voltage (VIT) | 1.71 V | V |
| Supply Current | 220 nA | nA |
| Reset Delay Time | 10 ms or 200 ms | ms |
| Reset Output Type | Open-drain, active-low | |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | 5-pin SOT23 or 2-mm × 2-mm SON-6 | |
| High-Level Output Voltage (RESET) | 0.8 × VDD | V |
| Low-Level Output Voltage (RESET) | 0.4 V | V |
Key Features
- Precision supply voltage supervision with a threshold voltage of 1.71 V for the TPS3838E18 model.
- Ultra-low power consumption of 220 nA (typical), making it suitable for battery-powered and low-power applications.
- Power-on reset generator with selectable reset delay times of 10 ms or 200 ms, configurable via the CT pin.
- Manual reset capability through the MR pin.
- Open-drain, active-low RESET output that requires a pullup resistor.
- Available in 5-pin SOT23 and 2-mm × 2-mm SON-6 packages.
- Operating temperature range of -40°C to 85°C.
Applications
- Low-power DSPs, microcontrollers, or microprocessors.
- Portable and battery-powered equipment.
- Intelligent instruments.
- Wireless communication systems.
- Notebook computers.
- Applications using the MSP430™ microcontroller.
- Automotive systems (refer to the TPS383x-Q1 for automotive-specific versions).
Q & A
- What is the typical supply current of the TPS3838E18DBVRG4?
The typical supply current is 220 nA.
- What are the available reset delay times for the TPS3838E18DBVRG4?
The reset delay times are 10 ms and 200 ms, configurable via the CT pin.
- What type of reset output does the TPS3838E18DBVRG4 have?
The reset output is open-drain, active-low.
- What is the monitored voltage threshold (VIT) for the TPS3838E18DBVRG4?
The monitored voltage threshold (VIT) is 1.71 V.
- What are the package options for the TPS3838E18DBVRG4?
The device is available in 5-pin SOT23 and 2-mm × 2-mm SON-6 packages.
- What is the operating temperature range of the TPS3838E18DBVRG4?
The operating temperature range is -40°C to 85°C.
- Does the TPS3838E18DBVRG4 require a pullup resistor for the reset output?
- How can the reset delay time be configured?
The reset delay time can be configured by connecting the CT pin to GND for 10 ms or to VDD for 200 ms.
- What is the purpose of the manual reset (MR) pin?
The manual reset (MR) pin allows for manual assertion of the reset output by pulling it to logic low.
- What are some typical applications for the TPS3838E18DBVRG4?
Typical applications include low-power DSPs, microcontrollers, portable and battery-powered equipment, intelligent instruments, and wireless communication systems.
