Packaging information
| Package | Pins WSON (DRV) | 6 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the TPS3818G25
- Power-On Reset Generator with Adjustable Delay Time: 1.25ms to 10s
- Very Low Quiescent Current: 2.4µA typ
- High Threshold Accuracy: 0.5% typ
- Fixed Threshold Voltages for Standard Voltage Rails from 0.9V to 5V and Adjustable Voltage Down to 0.4V Are Available
- Manual Reset (MR) Input
- Open-Drain RESET Output
- Temperature Range: -40°C to +125°C
- Small SOT23 and 2mm × 2mm QFN Packages
- APPLICATIONS
- DSP or Microcontroller Applications
- Notebook/Desktop Computers
- PDAs/Hand-Held Products
- Portable/Battery-Powered Products
- FPGA/ASIC Applications
PowerPAD Is a trademark of Texas Instruments
All other trademarks are the property of their respective owners
Description for the TPS3818G25
The TPS3818xxx family of microprocessor supervisory circuits monitor system voltages from 0.4V to 5.0V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds.
The TPS3818 uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3V. The reset delay time can be set to 20ms by disconnecting the CT pin, 300ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted between 1.25ms and 10s by connecting the CT pin to an external capacitor. When used with an external capacitor, the TPS3818xxx gives a more accurate delay time than the similar TPS3808xxx device. The TPS3818 has a very low typical quiescent current of 2.4µA so it is well-suited to battery-powered applications. It is available in either a small SOT23 and an ultra-small 2mm × 2mm QFN PowerPAD package, and is fully specified over a temperature range of -40°C to +125°C (TJ).