Overview
The TPS3801E18DCKR is a part of the TPS380x family of ultra-small supply voltage supervisors produced by Texas Instruments. This device is designed to monitor supply voltages and provide circuit initialization and timing supervision, particularly for DSPs, microcontrollers, and other processor-based systems. The TPS3801E18DCKR features a precision supply voltage monitor with a fixed threshold voltage of 1.71 V and a reset delay time of 200 ms.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Threshold Voltage | 1.67 | 1.71 | 1.75 | V |
| Reset Delay Time | 120 | 200 | 280 | ms |
| Supply Voltage (VDD) | 1.6 | - | 6 | V |
| Supply Current (IDD) | 8 | 11 | - | μA |
| High-Level Output Voltage (VOH) | VDD - 0.4 | - | - | V |
| Low-Level Output Voltage (VOL) | 0.2 | - | - | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | SC-70 | - |
Key Features
- Precision Supply Voltage Monitor: The TPS3801E18DCKR has a precise threshold voltage of 1.71 V with an accuracy of 2% to 2.5%.
- Power-On Reset Generator: The device features a fixed delay time of 200 ms after the supply voltage returns above its threshold.
- Manual Reset Input: Except for the TPS3801-01, the device includes a manual reset input (MR) that activates the RESET signal when driven low.
- Ultra-Small Package: Available in a 5-pin SC-70 package, which is about half the size of a 5-pin SOT-23 package.
- Wide Operating Temperature Range: Fully specified over a temperature range of –40°C to +85°C.
Applications
- Applications Using DSPs, Microcontrollers, or Microprocessors: Ideal for systems requiring precise voltage monitoring and reset functionality.
- Wireless Communication Systems: Suitable for battery-powered wireless devices.
- Portable/Battery-Powered Equipment: Used in devices that require low power consumption and reliable voltage monitoring.
- Programmable Controls: Applicable in various control systems that need precise voltage supervision.
- Industrial Equipment: Used in industrial settings where reliable operation over a wide temperature range is crucial.
- Notebook/Desktop Computers: Can be used in computer systems to ensure proper initialization and operation.
- Automotive Systems: Suitable for automotive applications due to its wide operating temperature range.
Q & A
- What is the primary function of the TPS3801E18DCKR?
The primary function is to monitor the supply voltage and provide a reset signal when the voltage drops below a preset threshold.
- What is the threshold voltage for the TPS3801E18DCKR?
The threshold voltage is 1.71 V.
- What is the reset delay time for the TPS3801E18DCKR?
The reset delay time is 200 ms.
- What is the supply current of the TPS3801E18DCKR?
The supply current is typically 11 μA.
- What is the operating temperature range of the TPS3801E18DCKR?
The operating temperature range is –40°C to +85°C.
- What package type is the TPS3801E18DCKR available in?
The device is available in a 5-pin SC-70 package.
- Does the TPS3801E18DCKR have a manual reset input?
- What are some typical applications for the TPS3801E18DCKR?
Typical applications include DSPs, microcontrollers, wireless communication systems, portable/battery-powered equipment, and industrial equipment.
- How accurate is the threshold voltage of the TPS3801E18DCKR?
The threshold voltage accuracy is 2% to 2.5%.
- What is the maximum supply voltage for the TPS3801E18DCKR?
The maximum supply voltage is 6 V.
