Milpitas, Calif. - Linear Technology's LTC2903-1 keeps tabs on up to four low-voltage supplies simultaneously, assuring accurate monitoring down to 0.5 V. The chip provides 10 percent undervoltage monitoring with ±1.5 percent threshold accuracy over temperature to guarantee reliable reset operation without false triggering. Its common reset output (open-drain) remains low until all four inputs have been in compliance for 200 ms. Factory-trimmed voltage combinations are available in three versions to accommodate various input supplies with minimal requirements for external components. The selection includes options for monitoring +5, +3.3, +2.5, +1.8, and -5.2 volts, and an adjustable input down to 0.5 V. The chip is immune to power supply glitches. The LTC2903-1, in a 6-lead ThinSOT (SOT-23) package, is priced beginning at $1.65 each in 1k quantities.
(800) 4-LINEAR www.linear.com
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