Overview
The TPS386000RGPT, produced by Texas Instruments, is a quad supply voltage supervisor (SVS) designed to monitor four independent power rails. This device is part of the TPS3860x0 family and is particularly useful in systems requiring precise power-up and power-down sequencing. It features adjustable threshold voltages, programmable delay times, and a watchdog timer, making it versatile for various applications.
The TPS386000RGPT is packaged in a 4-mm x 4-mm, 20-pin VQFN package, which is compact and suitable for space-constrained designs. It operates over a wide supply voltage range of 1.8 V to 6.5 V and has a very low quiescent current of 11 μA typical, contributing to energy efficiency.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 1.8 | - | 6.5 | V |
| Threshold Voltage (VITN) | 0.4 | - | - | V |
| Threshold Accuracy | - | 0.25% | - | % |
| Quiescent Current (IDD) | - | 11 | - | μA |
| Delay Time (tD) | 1.4 ms | - | 10 s | - |
| Watchdog Timer Time-out (tWDT) | 450 ms | 600 ms | 750 ms | - |
| Operating Temperature (TJ) | -40°C | - | 125°C | - |
| Package Type | - | - | - | 20-Pin VQFN |
Key Features
- Four independent voltage supervisors with adjustable thresholds down to 0.4 V.
- Programmable delay times from 1.4 ms to 10 s.
- Watchdog timer with dedicated output.
- Very low quiescent current of 11 μA typical.
- Manual reset (MR) input for SVS-1.
- Window comparator for SVS-4 to monitor positive or negative voltages.
- Open-drain RESETn and WDO outputs for TPS386000, and push-pull outputs for TPS386040.
- Compact 4-mm x 4-mm 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 TPS386000RGPT?
The primary function of the TPS386000RGPT is to monitor four independent power rails and provide reset signals if any of the monitored voltages drop below the programmed threshold.
- What is the range of the adjustable threshold voltage for the TPS386000RGPT?
The adjustable threshold voltage can be set as low as 0.4 V.
- How can the delay time be programmed for each SVS?
The delay time can be programmed independently for each SVS using the CTn pin connection, allowing delays from 1.4 ms to 10 s.
- What is the quiescent current of the TPS386000RGPT?
The quiescent current is typically 11 μA.
- Does the TPS386000RGPT have a manual reset feature?
Yes, SVS-1 has an active-low manual reset (MR) input.
- What types of outputs does the TPS386000RGPT have?
The TPS386000 has open-drain RESETn and WDO outputs, while the TPS386040 has push-pull outputs.
- What is the operating temperature range of the TPS386000RGPT?
The operating temperature range is from -40°C to 125°C.
- In what package is the TPS386000RGPT available?
The device is available in a 20-pin VQFN package.
- What is the purpose of the watchdog timer in the TPS386000RGPT?
The watchdog timer provides a dedicated output that goes low if the watchdog timer times out, indicating a system malfunction.
- Can the TPS386000RGPT monitor negative voltages?
Yes, SVS-4 can monitor negative voltages using a window comparator.
