TPS3890

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS3890 SLVSD65A – MARCH 2016 – REVISED MAY 2016 TPS3890 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay 1 Features 1 Power-On-Reset (POR) Generator with Adjustable Delay Time: 40 μs to 30 s Very Low Quiescent Current: 2.1 μA (Typical) High Threshold Accuracy: 1% (max) Precision Hysteresis Fixed and Adjustable Threshold Voltages: – Fixed Thresholds for Standard Rails: 1.2 V to 3.3 V – Adjustable Down to 1.15 V Manual Reset (MR) Input Open-Drain RESET Output Temperature Range: –40°C to +125°C Package: 1.5-mm × 1.5-mm WSON 2 Applications DSPs or Microcontrollers FPGAs, ASICs Notebooks, Desktop Computers Smartphones, Hand-Held Products Portable, Battery-Powered Products Solid-State Drives Set-Top Boxes Industrial Control Systems 3 Description The TPS3890 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 V, 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 TPS3890 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 40 μs and 30 s by connecting the CT pin to an external ...