Overview
The TPS3125L30DBVT is an ultra-low voltage processor supervisory circuit produced by Texas Instruments. This device is designed to monitor the supply voltage and provide a reset signal when the voltage falls below a predetermined threshold. It is particularly useful in applications requiring low-voltage operation, such as those involving low-voltage DSPs, microcontrollers, or microprocessors.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Minimum Supply Voltage | 0.75 | - | - | V |
| Supply Voltage Supervision Range | 1.2, 1.5, 1.8, 3 (for TPS3125 only) | - | - | V |
| Manual Reset Voltage | 0.0 | - | VDD + 0.3 | V |
| Watchdog Input Voltage | 0 | - | VDD + 0.3 | V |
| High-Level Input Voltage | 0.7 × VDD | - | - | V |
| Low-Level Input Voltage | 0.3 × VDD | - | - | V |
| Operating Free-Air Temperature Range | -40 | - | 85 | °C |
| Supply Current | - | 14 µA | - | A |
| Delay Time (td) | 100 ms | 180 ms | 260 ms | ms |
| Propagation Delay Time (tPHL, tPLH) | 0.1 µs | - | 10 µs | µs |
Key Features
- Ultra-low minimum supply voltage of 0.75 V
- Supply voltage supervision range includes 1.2 V, 1.5 V, 1.8 V, and 3 V (for TPS3125 devices only)
- Power-on reset generator with a fixed delay time of 180 ms
- Manual reset input (MR) pin
- Watchdog timer that retriggers the RESET output when VDD ≥ VIT
- Low supply current of 14 µA (typical)
- Small SOT23-5 package
- Temperature range of -40°C to +85°C
- Reset output available in push-pull (active-low and active-high) and open-drain (active-low) configurations
Applications
- Low-voltage DSPs, microcontrollers, or microprocessors
- Portable/battery-powered equipment
- Wireless communication systems
- Programmable controls
- Industrial equipment
- Notebook/desktop computers
- Intelligent instruments
Q & A
- What is the minimum supply voltage for the TPS3125L30DBVT?
The minimum supply voltage is 0.75 V.
- What are the supply voltage supervision ranges for the TPS3125L30DBVT?
The supervision ranges include 1.2 V, 1.5 V, 1.8 V, and 3 V (for TPS3125 devices only).
- Does the TPS3125L30DBVT have a manual reset feature?
- What is the typical supply current of the TPS3125L30DBVT?
The typical supply current is 14 µA.
- What is the operating temperature range for the TPS3125L30DBVT?
The operating temperature range is -40°C to +85°C.
- What types of reset output configurations are available for the TPS3125L30DBVT?
The reset output is available in push-pull (active-low and active-high) and open-drain (active-low) configurations.
- What is the delay time for the power-on reset generator?
The fixed delay time is 180 ms.
- Does the TPS3125L30DBVT include a watchdog timer?
- In what package is the TPS3125L30DBVT available?
- What are some common applications for the TPS3125L30DBVT?
