Overview
The TPS3840DL30DBVRQ1 is a part of the TPS3840-Q1 family of voltage supervisors or reset ICs produced by Texas Instruments. This device is designed for automotive and low-power applications, offering a wide operating voltage range from 1.5 V to 10 V. It features low quiescent current, high accuracy, and programmable reset time delay, making it an ideal solution for voltage monitoring in various systems.
The TPS3840-Q1 is qualified for automotive applications, meeting AEC-Q100 standards with a device temperature grade 1: –40°C to +125°C ambient operating temperature. It also includes built-in glitch immunity protection and low power-on reset voltage (VPOR), ensuring reliable operation in noisy environments.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VDD (Input Supply Voltage) | 1.5 V ≤ VDD ≤ 10 V | 1.5 | 10 | V | |
| VIT- (Negative-going Input Threshold Accuracy) | –40°C to 125°C | –1.5 | 1 | 1.5 | % |
| VHYS (Hysteresis on VIT- pin) | VIT- = 1.6 V to 3.0 V | 75 | 100 | 125 | mV |
| VHYS (Hysteresis on VIT- pin) | VIT- = 3.1 V to 4.9 V | 175 | 200 | 225 | mV |
| IDD (Supply Current into VDD pin) | VDD > VIT+, TA = –40°C to 125°C | 300 | 700 | nA | |
| VMR_L (Manual Reset Logic Low Input) | 600 | mV | |||
| VMR_H (Manual Reset Logic High Input) | 0.7VDD | V | |||
| RMR (Manual Reset Internal Pull-up Resistance) | 100 | kΩ | |||
| RCT (CT Pin Internal Resistance) | 350 | 500 | 650 | kΩ | |
| tSTRT (Fast Start-up Delay) | 350 | µs | |||
| tD (Programmable Reset Time Delay) | No capacitor to 10-µF capacitor | 50 µs | 6.2 s |
Key Features
- Qualified for automotive applications with AEC-Q100 certification and an ambient operating temperature range of –40°C to +125°C.
- Wide operating voltage range from 1.5 V to 10 V, with the option to extend the input voltage range using external resistors.
- Low quiescent current: 350 nA (typical), 700 nA (maximum).
- Fixed threshold voltage (VIT-) from 1.6 V to 4.9 V in 0.1-V steps, with high accuracy (1% typical, 1.5% maximum) and built-in hysteresis.
- Fast start-up delay of 350 µs (maximum).
- Programmable capacitor-based reset time delay from 50 µs (no capacitor) to 6.2 seconds (10-µF capacitor).
- Active-low manual reset (MR) with built-in glitch immunity protection.
- Three output topologies: open-drain active-low (TPS3840DL-Q1), push-pull active-low (TPS3840PL-Q1), and push-pull active-high (TPS3840PH-Q1).
- Available in a 5-pin SOT-23 (DBV) package.
Applications
- Automotive head units and clusters.
- Automotive displays, integrated cockpits, and driver monitoring systems.
- Telematics control units and emergency call systems.
- Battery-powered and low-power applications.
Q & A
- What is the operating voltage range of the TPS3840DL30DBVRQ1?
The operating voltage range is from 1.5 V to 10 V.
- What is the quiescent current of the TPS3840DL30DBVRQ1?
The quiescent current is 350 nA (typical) and 700 nA (maximum).
- What are the available threshold voltages for the TPS3840-Q1 family?
The threshold voltages range from 1.6 V to 4.9 V in 0.1-V steps.
- How can the reset time delay be programmed?
The reset time delay can be programmed using an external capacitor connected to the CT pin.
- What are the different output topologies available for the TPS3840-Q1 family?
The available output topologies are open-drain active-low, push-pull active-low, and push-pull active-high.
- What is the package type for the TPS3840DL30DBVRQ1?
The package type is 5-pin SOT-23 (DBV).
- Is the TPS3840DL30DBVRQ1 qualified for automotive applications?
Yes, it is qualified for automotive applications and meets AEC-Q100 standards.
- What is the temperature range for the TPS3840DL30DBVRQ1?
The ambient operating temperature range is –40°C to +125°C.
- Does the TPS3840DL30DBVRQ1 have built-in glitch immunity protection?
Yes, it has built-in glitch immunity protection for both the manual reset (MR) and VDD inputs.
- What is the typical start-up delay for the TPS3840DL30DBVRQ1?
The typical start-up delay is 350 µs.
