Overview
The TPS386040RGPR, produced by Texas Instruments, is a quad supply voltage supervisor with adjustable delay and watchdog timer. This device is part of the TPS3860x0 family and is designed to monitor four independent power rails, ensuring reliable operation in various electronic systems. It features adjustable threshold voltages, programmable delay times, and a watchdog timer, making it suitable for a wide range of applications including DSP, microcontroller, FPGA, and ASIC systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 1.8 | 6.5 | V | |
| Threshold Voltage Accuracy | 0.25% | % | ||
| Quiescent Current (IDD) | 11 μA | μA | ||
| Delay Time | 1.4 ms | 10 s | ||
| Watchdog Timer Time-out Period | 450 ms | 600 ms | 750 ms | ms |
| Package Type | 20-Pin VQFN | |||
| Operating Temperature Range | -40°C | 125°C | °C |
Key Features
- Four independent voltage supervisors with adjustable thresholds down to 0.4 V.
- Channel 4 supports monitoring at any positive or negative voltage with a window comparator.
- Adjustable delay time from 1.4 ms to 10 s.
- Very low quiescent current of 11 μA typical.
- Watchdog timer with dedicated output.
- Well-controlled output during power-up.
- Manual reset (MR) input for SVS-1.
- Available in 20-pin VQFN package.
Applications
- All DSP and microcontroller applications.
- All FPGA and ASIC applications.
- Telecom and wireless infrastructure.
- Industrial equipment.
- Analog sequencing.
Q & A
- What is the primary function of the TPS386040RGPR?
The primary function of the TPS386040RGPR is to monitor four independent power rails and provide reset signals if the voltage drops below the programmed threshold.
- What is the range of adjustable threshold voltages for the TPS386040RGPR?
The adjustable threshold voltages can be set down to 0.4 V for channels 1, 2, and 3, and any positive or negative voltage for channel 4.
- How is the delay time programmed for each supervisory circuit?
The delay time can be programmed independently for each supervisory circuit using the CTn pin connection, ranging from 1.4 ms to 10 s.
- What is the quiescent current of the TPS386040RGPR?
The quiescent current is typically 11 μA.
- Does the TPS386040RGPR have a watchdog timer?
- What type of output does the TPS386040RGPR have for the reset signals?
The TPS386040RGPR has push-pull logic buffer output pins for the reset signals.
- What is the operating temperature range of the TPS386040RGPR?
The operating temperature range is from -40°C to 125°C.
- In what package is the TPS386040RGPR available?
The TPS386040RGPR is available in a 20-pin VQFN package.
- Can the TPS386040RGPR monitor negative voltages?
- Is there a manual reset option available?
