Overview
The TPS3837L30DBVR 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. The TPS3837L30DBVR specifically monitors supply voltages and generates a reset signal when the voltage falls below a predefined threshold, ensuring proper system reset and initialization.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Supply Voltage Range | 1.6 V to 6 V | V |
| Threshold Voltage (VIT) | 2.79 V (typical) | V |
| Supply Current | 220 nA (typical) | nA |
| Reset Delay Time | 10 ms or 200 ms (selectable) | ms |
| Reset Output Type | Active-high, push-pull | |
| Operating Temperature Range | –40°C to 85°C | °C |
| Package Type | 5-pin SOT23 or 6-pin WSON |
Key Features
- Precision supply voltage supervision with thresholds of 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- Power-on reset generator with selectable delay time (10 ms or 200 ms) via the CT pin.
- Manual reset input (MR) for external reset control.
- Active-high, push-pull RESET output that does not require a pullup resistor.
- Low power consumption with a maximum supply current of 450 nA.
- Compact packaging options including 5-pin SOT23 and 6-pin WSON.
Applications
- Low-power DSPs, microcontrollers, and microprocessors.
- Portable and battery-powered equipment.
- Intelligent instruments.
- Wireless communication systems.
- Notebook computers.
- Automotive systems (see TPS383x-Q1 for automotive-specific versions).
Q & A
- What is the primary function of the TPS3837L30DBVR? The primary function is to monitor the supply voltage and generate a reset signal when the voltage falls below a predefined threshold.
- What are the available threshold voltages for the TPS383x family? The available threshold voltages are 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- How is the reset delay time configured? The reset delay time can be configured to 10 ms by connecting the CT pin to GND or 200 ms by connecting it to VDD.
- What type of reset output does the TPS3837L30DBVR have? The TPS3837L30DBVR has an active-high, push-pull RESET output.
- What is the operating temperature range of the TPS3837L30DBVR? The operating temperature range is –40°C to 85°C.
- What are the packaging options for the TPS3837L30DBVR? The packaging options include 5-pin SOT23 and 6-pin WSON.
- How much current does the TPS3837L30DBVR typically consume? The device typically consumes 220 nA of supply current.
- Does the TPS3837L30DBVR require a pullup resistor for the RESET output? No, the TPS3837L30DBVR does not require a pullup resistor for the RESET output.
- What is the purpose of the manual reset (MR) pin? The manual reset (MR) pin allows for external reset control by asserting the reset output when MR is logic low.
- Can the TPS3837L30DBVR be used in automotive systems? For automotive systems, it is recommended to use the TPS383x-Q1 version.
