Overview
The TPS3836K33QDBVRQ1 is a nanopower supervisory circuit from Texas Instruments, designed to provide circuit initialization and timing supervision primarily for digital signal processors (DSP) and processor-based systems. This device is part of the TPS3836, TPS3837, and TPS3838 families, which are qualified for automotive applications and offer low-power consumption and precise supply voltage supervision.
The TPS3836K33QDBVRQ1 features a push-pull RESET output and is available in a 5-pin SOT-23 package. It operates over a temperature range of −40°C to 125°C, making it suitable for a variety of applications, including automotive systems, battery-powered equipment, and wireless communication systems.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 1.8 V, 2.5 V, 3.0 V, 3.3 V | - | 7 V | V |
| Reset Threshold Voltage (VIT) | 2.82 V | 2.93 V | 3.10 V | V |
| Supply Current (IDD) | 220 nA | - | 500 nA | nA |
| Delay Time (td) | 10 ms (CT = GND) | - | 200 ms (CT = VDD) | ms |
| High-Level Output Voltage (VOH) | 0.8 × VDD | - | - | V |
| Low-Level Output Voltage (VOL) | 0.4 V | - | - | V |
| Temperature Range | −40°C | - | 125°C | °C |
| Package | - | - | 5-pin SOT-23 | - |
Key Features
- Precision supply voltage supervision with threshold voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- Power-on reset generator with selectable delay times of 10 ms or 200 ms.
- Push-pull RESET output (TPS3836), active-high push-pull RESET output (TPS3837), or active-low open-drain RESET output (TPS3838).
- Manual reset capability.
- Low supply current of 220 nA (typical).
- ESD protection exceeding 2000 V per MIL-STD-883, Method 3015.
- Operating temperature range of −40°C to 125°C.
Applications
- Automotive systems using low-power DSPs, microcontrollers, or microprocessors.
- Battery-powered equipment.
- Intelligent instruments.
- Wireless communication systems.
- Notebook computers and other portable devices.
Q & A
- What is the primary function of the TPS3836K33QDBVRQ1?
The primary function is to provide circuit initialization and timing supervision for DSP and processor-based systems.
- What are the available reset threshold voltages for the TPS3836 family?
The available reset threshold voltages are 1.8 V, 2.5 V, 3.0 V, and 3.3 V.
- How does the delay time for the reset output work?
The delay time can be set to either 10 ms or 200 ms depending on whether the CT pin is connected to GND or VDD.
- What is the typical supply current of the TPS3836K33QDBVRQ1?
The typical supply current is 220 nA.
- What type of RESET output does the TPS3836K33QDBVRQ1 have?
The TPS3836K33QDBVRQ1 has an active-low push-pull RESET output.
- What is the operating temperature range of the TPS3836K33QDBVRQ1?
The operating temperature range is −40°C to 125°C.
- What kind of ESD protection does the TPS3836K33QDBVRQ1 offer?
The device offers ESD protection exceeding 2000 V per MIL-STD-883, Method 3015.
- What package type is the TPS3836K33QDBVRQ1 available in?
The device is available in a 5-pin SOT-23 package.
- Can the TPS3836K33QDBVRQ1 be used in automotive applications?
Yes, the device is qualified for automotive applications.
- What is the purpose of the manual reset (MR) pin?
The manual reset pin allows for manual assertion of the RESET output.
