Overview
The TPS3838L30DBVRG4 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 TPS3836, TPS3837, and TPS3838 family of supervisory circuits. It operates within a supply voltage range of 1.6 V to 6 V and is characterized by its low power consumption and precision supply voltage supervision.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Supply Voltage | 3.0 V | V |
| Threshold Voltage (VIT) | 2.64 V | V |
| Supply Current | 220 nA (typical) | nA |
| Reset Delay Time | 10 ms or 200 ms (selectable) | ms |
| Reset Output Type | Open-drain, active-low | |
| Package Type | 5-pin SOT23 (DBV) | |
| Operating Temperature Range | -40°C to 85°C | °C |
| Manual Reset Input | Active-low logic input |
Key Features
- Precision supply voltage supervision with threshold voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- Power-on reset generator with selectable delay time of 10 ms or 200 ms.
- Manual reset input for external reset control.
- Open-drain, active-low RESET output (requires a pullup resistor).
- Low power consumption with a typical supply current of 220 nA.
- Available in 5-pin SOT23 (DBV) and 2-mm × 2-mm SON-6 packages.
- Operating temperature range from -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 (see TPS383x-Q1 for automotive-specific versions).
Q & A
- What is the typical supply current of the TPS3838L30DBVRG4?
The typical supply current is 220 nA.
- What are the available threshold voltages for the TPS3838 family?
The available threshold voltages are 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- How can the reset delay time be configured?
The reset delay time can be configured to 10 ms by connecting the CT pin to GND or 200 ms by connecting the CT pin to VDD.
- What type of reset output does the TPS3838L30DBVRG4 have?
The TPS3838L30DBVRG4 has an open-drain, active-low RESET output.
- What is the operating temperature range of the TPS3838L30DBVRG4?
The operating temperature range is from -40°C to 85°C.
- Does the TPS3838L30DBVRG4 require any external components for operation?
No, the device does not require any external components for basic operation.
- What is the purpose of the manual reset input?
The manual reset input allows for external control to assert the reset output to an active state.
- In what package types is the TPS3838L30DBVRG4 available?
The device is available in 5-pin SOT23 (DBV) and 2-mm × 2-mm SON-6 packages.
- What are some common applications for the TPS3838L30DBVRG4?
Common applications include low-power DSPs, microcontrollers, portable and battery-powered equipment, intelligent instruments, and wireless communication systems.
- How does the device handle power-on reset?
During power-on, the RESET output is asserted when the supply voltage VDD becomes higher than 1.1 V, and it remains active until VDD rises above the threshold voltage VIT plus VHYS.
