The TPS3808 family of microprocessor supervisory circuits monitors 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.
Features
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 0.9 V to 5 V and adjustable voltage down to 0.4 V are available.
TPS3808
SBVS050M – MAY 2004 – REVISED MARCH 2023
TPS3808 Low-Quiescent-Current, Programmable-Delay Supervisory Circuit
1 Features
• 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 0.9 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 and 2-mm × 2-mm WSON packages
2 Applications
• DSP or microcontroller applications • Notebook and desktop computers • PDAs and hand-held products • Portable and battery-powered products • FPGA and ASIC applications
1.2 V
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TPS3808 Datasheet
