LP3470A Texas instruments

LP3470A

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LP3470A

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Описание

The LP3470A device is a micropower voltage supervisory circuit designed to monitor voltages within 1% of reset threshold overtemperature and is pin-to-pin compatible with existing TI device LP3470. The LP3470A device provides accurate, nano-power voltage monitoring with programmable delay.The LP3470A asserts a reset signal whenever the VCC supply voltage falls below a reset threshold. The reset time-out period is adjustable using an external capacitor. Reset remains asserted for an interval (programmed by an external capacitor) after VCC has risen above the threshold voltage plus hysteresis. For information on available reset threshold voltage options, see Mechanical, Packaging, and Orderable Information.

Pin-to-pin compatible with LP3470
5-Pin SOT-23 package
Open-drain RESET output
Programmable reset time-out period using an external capacitor
Immune to short VCC transients
±1% Reset threshold accuracy (typical)
Ultra-low quiescent current (0.3 µA typical)
RESET valid down to VCC = 0.95 V

Number of supplies monitored	1
Threshold voltage 1 (typ) (V)	2.63, 2.75, 2.93, 3.08, 3.65, 4, 4.38, 4.63
Features	Manual reset capable
Reset threshold accuracy (%)	1
Iq (typ) (mA)	0.0003
Output driver type/reset output	Active-low, Open-drain
Supply voltage (min) (V)	0.9
Supply voltage (max) (V)	10
Rating	Catalog
Watchdog timer WDI (s)	None
Monitored voltage 1 (nom) (V)	3, 3.3, 4, 5
Operating temperature range (°C)	-40 to 125