Shenzhen Meiyuxin Technology Co., Ltd. [Supply TI Automotive Chips] TPS3808G33QDBVRQ1 Low Quiescent Current Programmable Delay Monitor! ! !

Description:

TPS3808G33QDBVRQ1 microprocessor supervisory circuits monitor system voltages from 0.4 V to 5 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 MR return above their thresholds.

TPS3808G33QDBVRQ1 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted from 1.25 ms to 10 s by connecting the CT pin to an external capacitor. The TPS3808Gxx-Q1 has a very low typical quiescent current of 2.4 µA, so it is well suited for battery-powered applications. The device is available in a small SOT-23 package (one option available in WSON) and is fully specified over a temperature range of –40°C to +125°C (TJ).

Features:

Qualified for Automotive Applications

Power-On Reset Generator With Adjustable Delay Time: 1.25 ms to 10 s

Very Low Quiescent Current: 2.4 µA Typical

High Threshold Accuracy: 0.5% Typical

Fixed Threshold Voltages for Standard Voltage Rails From 1.2 V to 5 V and Adjustable Voltage Down to 0.4 V Are Available

Manual Reset (MR) Input

Open-Drain RESET Output

Temperature Range: –40°C to +125°C

Small SOT-23 Package and WSON Package (TPS3808G01QDRVRQ1 only)

Applications:

• DSP or Microcontroller Applications

• FPGA and ASIC Applications

• Automotive Vision

• Automotive Radar