TPS3890
TPS3890 is 1% Accurate Supervisor manufactured by Texas Instruments.
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 puters
- 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 capacitor. The TPS3890 has a very low quiescent current of 2.1 μA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of
- 40°C to +125°C (TJ).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
WSON (6)
1.50 mm × 1.50 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Typical Application Circuit
1.8 V 1.2 V
SENSE
MR TPS389012
RESET...
